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| United States Patent Application |
20090232753
|
| Kind Code
|
A1
|
|
Healy; Lin Lu
;   et al.
|
September 17, 2009
|
Gel compositions
Abstract
A gel, comprising: an ester and a polymer having at least one of the
following rigid block groups; polystyrene, polyethylene, polyvinyl
chloride, and phenolics as well as one elastic block that is a member of
the group consisting of ethylene/butadiene copolymers, polyisoprene,
polybutadiene, ethylene/propylene copolymers, or ethylene-propylene/diene
copolymers, wherein the polymer is either triblock copolymers, star
polymers, radial polymers, multi-block copolymers, or combinations
thereof, wherein the composition is substantially free of mineral oils;
wherein the ester's chemical formula is:
##STR00001##
Wherein n=1, 2, 3, and 4, and R.sub.1 represents a member of the group
consisting of: hydrogen, hydrocarbyl, phenyl, methoxyphenyl, alkylphenyl,
substituted alkyl, and substituted phenyl; R.sub.2 represents a member of
the group consisting of: hydrogen, hydrocarbyl, phenyl, methoxyphenyl,
alkylphenyl, substituted alkyl, substituted phenyl, alkylene, phenylene,
substituted alkylene, and substituted phenylene, and R.sub.3 represents a
member of the group consisting of: alkylene, phenylene, substituted
alkylene, or substituted phenylene, and wherein R.sub.4, R.sub.5, R.sub.6
all represent a member of the group consisting of: alkylene, phenylene,
substituted alkylene, or substituted phenylene, and R.sub.7, R.sub.8,
R.sub.9 all represent a member of the group consisting of: hydrogen,
hydrocarbyl, phenyl, methoxyphenyl, alkylphenyl, substituted alkyl, and
substituted phenyl.
| Inventors: |
Healy; Lin Lu; (Houston, TX)
; Cunningham, JR.; Jack C.; (Houston, TX)
; Morrison; David S.; (The Woodlands, TX)
; Song; Wei; (Houston, TX)
; Butuc; Gina; (Houston, TX)
|
| Correspondence Address:
|
Arthur M. Dula
3106 Beauchamp St.
Houston
TX
77009
US
|
| Serial No.:
|
319751 |
| Series Code:
|
12
|
| Filed:
|
January 12, 2009 |
| Current U.S. Class: |
424/59; 424/65; 514/772.1; 524/284 |
| Class at Publication: |
424/59; 524/284; 424/65; 514/772.1 |
| International Class: |
C08K 5/09 20060101 C08K005/09; A61K 8/90 20060101 A61K008/90; A61K 47/30 20060101 A61K047/30; A61Q 15/00 20060101 A61Q015/00; A61Q 17/04 20060101 A61Q017/04 |
Claims
1. A gel composition, comprising:an ester compound; anda polymer compound
having at least one rigid block selected from the group consisting of
polystyrene, polyethylene, polyvinylchloride, and phenolics and one
elastomeric block selected from the group consisting of
ethylene/butadiene copolymers, polyisoprene, polybutadiene,
ethylene/propylene copolymers, ethylene-propylene/diene copolymers,
wherein the polymer is selected from the group consisting of triblock
copolymers, star polymers, radial polymers, multi-block copolymers, and
combinations thereof,where in the gel composition is substantially free
of mineral oils; wherein the ester is represented by one of the following
formulas: ##STR00018## wherein n=1, 2, 3, and 4, andR..sub.1 includes
hydrogen, hydrocarbyl, phenyl, methoxyphenyl, alkylphenyl, substituted
alkyl, and substituted phenyl; R..sub.2 includes hydrogen, hydrocarbyl,
phenyl, methoxyphenyl, alkylphenyl, substituted alkyl, substituted
phenyl, alkylene, phenylene, substituted alkylene, and substituted
phenylene, and R.sub.3 includes alkylene, phenylene, substituted
alkylene, or substituted phenylene, andwherein R.sub.4, R.sub.5 and
R.sub.6 individually include alkylene, phenylene, substituted alkylene,
or substituted phenylene, R.sub.7 and R.sub.8 and R.sub.9 individually
include hydrogen, hydrocarbyl, phenyl, methoxyphenyl, alkylphenyl,
substituted alkyl, and substituted phenyl.
2. The gel composition of claim 1, further comprising a diblock copolymer,
wherein the gel composition is substantially free of mineral oils.
3. The gel composition of claim 1, wherein the ester is selected from the
group consisting of isopropyl myristate, isopropyl palmitate,
C..sub.12-C..sub.15 alkyl benzoate, octyl methoxycinnamate, octyl dodecyl
neopentanoate, propylene glycol dicaprylate/caprate, jojoba oil, and
isostearyl neopentanoate.
4. The gel composition of claim 1, wherein the polymer compound is present
in the amount of about 1% to about 40% by weight.
5. The gel composition of claim 2, wherein the diblock copolymer is
selected from the group consisting of styrene-ethylene/propylene
copolymers, styrene-ethylene/butadiene copolymers, styrene-isoprene
copolymers, and styrene-butadiene copolymers.
6. The gel composition of claim 1, wherein the triblock copolymer is
selected from the group consisting of styrene-ethylene/propylene-styrene
copolymers, styrene-ethylene/butadiene-styrene copolymers,
styrene-isoprene-styrene copolymers, and styrene-butadiene-styrene
copolymers.
7. The gel composition of claim 2, wherein the diblock copolymer is
hydrogenated.
8. The gel composition of claim 1, wherein the triblock copolymer is
hydrogenated.
9. The gel composition of claim 1, wherein the triblock copolymer includes
a grafted functional group.
10. The gel composition of claim 1, further comprising a suspended
component.
11. The gel composition of claim 10, further comprising a diblock
copolymer.
12. The gel composition of claim 10, wherein the suspended component is a
solid selected from the group consisting of organic materials, inorganic
materials, organometallic materials, phosphorescent materials, and
fluorescent materials.
13. The gel composition of claim 10, wherein the suspended component is a
solid selected from the group consisting of zinc oxide, coated zinc
oxide, surface-treated zinc oxide, titanium dioxide, surface-treated
titanium dioxide, graphite, explosives, air-sensitive chemicals,
moisture-sensitive chemicals, boron nitride, iron oxides, talc, mica,
plastics, polymers, silica, silicon dioxide, aluminum oxide, metal
particles, antibacterials, antibiotics, anesthetics, glass, clays, gums,
capsules containing an active ingredient, starch, modified starch, other
encapsulated materials, and combinations thereof.
14. The gel composition of claim 10, wherein the suspended component is a
liquid selected from the group consisting of water, water containing a
water-soluble material, glycerin, propylene glycol, butylene glycol,
alcohols, acids, surfactants, emulsifiers, polyglycerols, ethers, polar
esters, fluorinated compounds, perfluoropolyethers, silicones,
silicon-containing compounds, and combinations thereof.
15. The gel composition of claim 1, further comprising an active
ingredient.
16. The gel composition of claim 15, wherein the active ingredient is
selected from the group consisting of sunscreens, antiperspirants,
deodorants, perfumes, cosmetics, emollients, insect repellants,
pesticides, herbicides, fungicides, plasticizers, insecticides, and
medicaments.
17. A method of making a gel composition, comprising:mixing an ester
compound with a polymer compound having at least one rigid block selected
from the group consisting of polystyrene, polyethylene,
polyvinylchloride, and phenolics and one elastomeric block selected from
the group consisting of ethylene/butadiene copolymers, polyisoprene,
polybutadiene, ethylene/propylene copolymers, ethylene-propylene/diene
copolymers, wherein the polymer is selected from the group consisting of
triblock copolymers, star polymers, radial polymers, multi-block
copolymers, and combinations thereof,heating the mixture;agitating the
mixture until the mixture becomes homogeneous; andcooling the
mixture;wherein the gel composition is substantially free of mineral
oils;wherein the ester is represented by one of the following formulas:
##STR00019## wherein n=1, 2, 3, and 4, andR.sub.1 includes hydrogen,
hydrocarbyl, phenyl, methoxyphenyl, alkylphenyl, substituted alkyl, and
substituted phenyl; R.sub.2 includes hydrogen, hydrocarbyl, phenyl,
methoxyphenyl, alkylphenyl, substituted alkyl, substituted phenyl,
alkylene, phenylene, substituted alkylene, and substituted phenylene, and
R.sub.3 includes alkylene, phenylene, substituted alkylene, or
substituted phenylene, and wherein R.sub..4, R.sub.-5, and R.sub.-6
individually include alkylene, phenylene, substituted alkylene, or
substituted phenylene, and R.sub.-7, R.sub.-8 and R..sub.9 individually
include hydrogen, hydrocarbyl, phenyl, methoxyphenyl, alkylphenyl,
substituted alkyl, and substituted phenyl.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001]This is a continuation application of U.S. patent application Ser.
No. 10/665, 943 which is a continuation of U.S. patent application Ser.
No. 09/419,571, filed on Oct. 18, 1999, which claims benefit of U.S.
Provisional Patent Application No. 60/106,094, filed Oct. 29, 1998, both
of which are incorporated herein in their entirety.
FIELD OF THE INVENTION
[0002]This invention relates to gel compositions which include esters,
ethers, alcohols, naturally-occurring fats and oils, or mixtures thereof.
BACKGROUND OF THE INVENTION
[0003]Numerous gel compositions are known in the art. Some have proven to
be a convenient and efficient vehicle or carrier for the application of
various active ingredients to the skin. Such active ingredients include
antiperspirants, deodorants, perfumes, sunscreens, cosmetics, emollients,
insect repellants, medicaments, and the like. Products incorporating a
gel composition and those made entirely from a gel composition may be in
the form of a soft gel or a stick. Rubbing a soft gel or solid stick
containing an effective amount of an active ingredient dissolved or
dispersed therein against the skin causes transfer of the gel composition
to the skin surface in a layer form, leaving the active ingredient within
the layer on the desired skin surface.
[0004]For topical administration of various cosmetic and health and beauty
materials to the skin, a gel composition preferably should have one or
more of the following desired properties: transparency, compatibility
with the active ingredient, controlled release of the active ingredient,
minimization of skin irritation, and the ability to suspend organic and
inorganic materials, such as color pigments, glitters, water, air, metal
oxides, sunscreen active particulates, and fragrances. In sunscreen
applications, it is desirable if the gel itself could act as a sunscreen
active ingredient. Moreover, it should moisturize the skin and exhibit
water wash-off resistance, but should not have significant syneresis. For
industrial applications, a gel base may offer one or more of the
following properties: suspension, moisture barrier, rheology, solvency,
controlled release, wetting, self-emulsifying, etc. For example, in the
paint industry the properties that are important are suspension and
controlled release.
[0005]A gel composition typically is made by mixing one or more compounds
to be gelled with a gelling agent. Known gelling agents include metal
soaps, surfactants, homopolymers, ionic homopolymers and copolymers,
fumed silica, natural derivatives of gums, waxes, clay, and so on. Common
gelling agents for cosmetic oils are fatty acid soaps of lithium,
calcium, sodium, aluminum, zinc, and barium. A number of homopolymers and
copolymers, such as atatic ethylene-propylene copolymers, have been used
to gel hydrocarbons. For example, gelled mineral oils have been
available; however, gel compositions including an ester, ether, alcohol,
or vegetable oil are less common. Because gel compositions including an
ester, alcohol, ether, or naturally-occurring fat or oil may provide a
better alternative to hydrocarbon gels, there is a need for exploring
methods of making such gel compositions.
SUMMARY OF THE INVENTION
[0006]The invention meets the aforementioned need in one or more of the
following aspects. In one aspect, the invention relates to a gel
composition that includes an ester compound and a polymer compound
selected from the group consisting of triblock copolymers, star polymers,
radial polymers, multi-block copolymers, and combinations thereof. The
gel composition optionally may include a diblock copolymer. When the gel
composition includes a diblock copolymer, the gel composition preferably
is substantially free of mineral oils. In some embodiments, the gel
composition may further include a suspended component. In other
embodiments, the gel composition may further include an active
ingredient. The active ingredient includes, but is not limited to, sun
screens, antiperspirants, deodorants, perfumes, cosmetics, emollients,
insect repellants, pesticides, herbicides, fungicides, plasticizers,
insecticides, and medicaments.
[0007]In another aspect, the invention relates to a gel composition which
includes at least two components. The first component is a compound
selected from the group consisting of alcohols, ethers,
naturally-occurring fats and oils, and combinations thereof. The second
component is a polymer compound selected from the group consisting of
diblock copolymers, triblock copolymers, star polymers, radial polymers,
multi-block copolymers, and combinations thereof. In some embodiments,
suitable alcohols include, but are not limited to, octyl dodecanol and
isostearyl alcohol. In other embodiments, suitable ethers include, but
are not limited to, dicarylyl ether. In still other embodiments, suitable
naturally-occurring fats and oils include, but are not limited to,
linseed oil, soybean oil, sunflower seed oil, corn oil, sesame oil, olive
oil, castor oil, coconut oil, palm oil, and peanut oil.
[0008]In yet another aspect, the invention relates to a gel composition
which includes at least two components. The first component is a compound
selected from the group consisting of esters, alcohols, ethers,
naturally-occurring fats and oils, and combinations thereof. The second
component is a polymer compound selected from the group consisting of
alkyl galactomannan, polybutadiene, and combinations thereof.
[0009]In still another aspect, the invention relates to a method of making
a gel composition. The method includes (a) mixing an ester compound with
a polymer compound selected from the group consisting of triblock
copolymers, star polymers, radial polymers, multi-block copolymers, and
combinations thereof; (b) heating the mixture; (c) agitating the mixture
until the mixture becomes homogeneous; and (d) cooling the mixture.
[0010]In still yet another aspect, the invention relates to a method of
making a gel composition. The method includes (a) mixing an alcohol, an
ether, or a naturally-occurring fat or oil with a polymer compound
selected from the group consisting of diblock copolymers, triblock
copolymers, star copolymers, radial polymers, multi-block copolymers, and
combinations thereof, (b) heating the mixture; (c) agitating the mixture
until the mixture becomes homogeneous; and (d) cooling the mixture.
[0011]In another aspect, the invention relates to a method of making a gel
composition. The method includes (a) mixing an ester, an alcohol, an
ether, or a naturally-occurring fat or oil with alkyl galactomannan, or
polybutadiene; (b) heating the mixture; (c) agitating the mixture until
the mixture becomes homogeneous; and (d) cooling the mixture.
[0012]Properties and advantages of the embodiments of the invention become
apparent with the following description.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013]FIG. 1 is a schematic illustrating the chain structure of a diblock
copolymer used in embodiments of the invention.
[0014]FIG. 2 is a schematic illustrating the chain structure of a triblock
copolymer used in embodiments of the invention.
[0015]FIG. 3 is a schematic illustrating the chain structure of a radial
polymer used in embodiments of the invention.
[0016]FIG. 4 is a schematic illustrating the chain structure of a star
polymer used in embodiments of the invention.
[0017]FIGS. 5A-5B are schematics illustrating the chain structure of
multi-block copolymers used in embodiments of the invention.
DESCRIPTION OF EMBODIMENTS OF THE INVENTION
[0018]Embodiments of the invention are, in part, based on the discovery
that esters, alcohols, ethers, and naturally-occurring fats and oils can
be gelled by using selected polymeric gelling agents. For example,
diblock copolymers, triblock copolymers, radial polymers, star polymers,
multi-block copolymers, butyl rubbers, alkyl galactomannan, and mixtures
thereof can be used as gelling agents to obtain gelled esters, gelled
ethers, gelled alcohols, and gelled naturally-occurring fats and oils. In
some embodiments, the gel compositions and products made therefrom are
transparent or substantially transparent. In other embodiments, the gel
compositions and products made therefrom are semi-transparent, hazy, or
opaque. These gel compositions and products made therefrom each have
numerous cosmetic and industrial applications.
[0019]A gel refers to a two-phase colloidal system comprising a liquid and
a solid in the form of thickened liquid, semi-solid or solid. A gel also
can refer to a composition that is either physically cross-linked by
virtue of entangled polymer chains, or chemically cross-linked by virtue
of covalent bonds such that it swells, but does not dissolve, in the
presence of liquid. A gel typically is obtained by use of a gelling
agent. The term "polymer" used herein includes both homopolymer and
copolymer. A homopolymer is a polymer obtained by polymerizing one type
of monomer, whereas a copolymer is a polymer obtained by polymerizing two
or more types of monomers. "Block copolymer" refers to a copolymer in
which like monomer units occur in relatively long, alternate sequences on
a chain.
[0020]The term "opaque" refers to the optical state of a medium whose
molecular aggregation is such that light cannot pass through. Therefore,
light transmission through an opaque medium is substantially close to
zero. On the other hand, the term "transparent" refers to the optical
state of a medium through which light can pass through so that an object
can be seen through it. As defined, the term "transparent" includes any
optical state which is not opaque. A medium is considered transparent
even if only a small fraction of light passes through it. Thus, a clear
gel and a translucent gel are considered transparent.
[0021]In some embodiments of the invention, a block copolymer capable of
forming a three-dimensional network through physical cross-linking is
used as the gelling agent. Suitable block copolymers include at least one
rigid block and one elastomeric block. The rigid blocks of a block
copolymer form rigid domains through which physical cross-linking may
occur. The physical cross-linking via these rigid domains yields a
continuous three-dimensional network. In the presence of heat, shear, or
solvent, the rigid domains soften and permit flow. Upon cooling, removal
of shear, or solvent evaporation, the rigid domains reform and harden,
locking the elastomeric network in place. Preferably, suitable block
copolymers include diblock copolymers, triblock copolymers, radial
polymers, star polymers, multi-block copolymers, and mixtures thereof.
[0022]The amount of a gelling agent may range from about 0.2% to about 80%
by weight, depending on the desired properties of the resulting gel.
Preferably, a gelling agent is present in the gel from about 1% to about
40% by weight. More preferably, a gelling agent is present in the gel
about 5% to about 20% by weight. In embodiments where both a diblock
copolymer and a triblock copolymer are used, the triblock copolymer may
range from about 0.1% to about 10%, and the diblock copolymer from about
1% to about 40%.
[0023]FIG. 1 illustrates the typical chain structure of a diblock
copolymer. The polymer chain of the diblock copolymer includes two
blocks: a rigid block and an elastomeric block. The rigid block is
represented by diamonds. The elastomeric block is represented by circles.
The rigid block typically is composed of polystyrene, polyethylene,
polyvinylchloride, phenolics, and the like; the elastomeric block may be
composed of, ethylene/butadiene copolymers, polyisoprene, polybutadiene,
ethylene/propylene copolymers, ethylene-propylene/diene copolymers, and
the like. As such, suitable diblock copolymers include, but are not
limited to, styrene-ethylene/propylene copolymers,
styrene-ethylene/butadiene copolymers, styrene-isoprene copolymers,
styrene-butadiene copolymers.
[0024]FIG. 2 illustrates the chain structure of a triblock copolymer. As
illustrated in FIG. 2, each polymer chain includes two rigid blocks at
either end and a middle block which is elastomeric. This is a preferred
triblock copolymer structure, although a triblock copolymer with two
elastomeric end blocks and a rigid middle block also can be used.
Suitable triblock copolymers include, but are not limited to,
styrene-ethylene/propylene-styrene copolymers,
styrene-ethylene/butadiene-styrene copolymers, styrene-isoprene-styrene
copolymers, and styrene-butadiene-styrene copolymers. Multi-block
copolymers are similar to diblock copolymers or triblock copolymers,
except that the multiple block copolymers include additional elastomeric
blocks and/or rigid blocks as illustrated in FIGS. 5A-5B.
[0025]In addition to the linear chain structure, branched homopolymers or
copolymers also may be used. FIGS. 3-4 illustrate the chain structure of
a radial polymer and a star polymer. It should be noted that one or more
functional groups may be grafted onto the chain of any of the
aforementioned polymers. In other words, any of the above polymers may be
modified by grafting. Suitable functional groups for grafting depend on
the desired properties. For example, one or more ester groups, silane
groups, silicon-containing groups, maleic anhydride groups, acrylamide
groups, and acid groups may be grafted. In addition to grafting, the
above polymers may be hydrogenated to reduce unsaturation before they are
used as gelling agents.
[0026]Numerous commercially available block copolymers may be used in
embodiments of the invention. For example, various grades of copolymers
sold under the trade name of Kraton.RTM. from Shell Chemical Company can
be used as a gelling agent. In addition, copolymers sold under the trade
name of Vector.RTM. available from Dexco.RTM. and Septon.RTM. from
Kuraray also may be used. U.S. Pat. No. 5,221,534, U.S. Pat. No.
5,578,089, and U.S. Pat. No. 5,879,694 disclose block copolymers which
may be used in embodiments of the invention, the disclosures of the three
patents are incorporated by reference in their entirety herein. Table 1
lists some commercially available block copolymers which may be used in
embodiments of the invention. It is noted that additional suitable block
copolymers may include, but are not limited to, polystyrene/polyester,
polyether/polyamide, polyether/polyester, polyester/polyamide,
polyether/polyurethane, polyester/polyurethane, poly(ethylene
oxide)/poly(propylene oxide), nylon/rubber, and
polysiloxane/polycarbonate.
TABLE-US-00001
TABLE 1
Polystyrene
Copolymer Block Type Content(%) Comment
Kraton .RTM. SEP 28 hydrogenated diblock
G 1702
Kraton .RTM. SEP 37 hydrogenated diblock
G 1701
Kraton .RTM. SEP 7 star polymer
C 1780
Kraton .RTM. SEBS 30 hydrogenated triblock
G 1650
Kraton .RTM. SEBS 30 hydrogenated triblock
G 1652
Kraton .RTM. SEBS + SEP 31 triblock and diblock mixture (85:15)
D 1101
Kraton .RTM. SEBS + SEP 28 triblock + diblock (85:15)
D 1102
Kraton .RTM. SEBS + SEP 35 triblock + diblock (66:34)
D 1133
Kraton .RTM. SEBS 30 triblock (hydrogenated and
FG 1901 functionally grafted with 1.7% of
maleic anhydride
Septon .RTM. SEP 35 Hydrogenated diblock
1001
Vector .RTM. SEP 30 Unsaturated diblock
6030
Vector .RTM. SBS 29 Unsaturated triblock
8550
Vector .RTM. SBS 31 Unsaturated triblock
2518P
Solprene .RTM. SB 40 Unsaturated diblock
1430
Note:
SEP denotes to styrene/ethylene/propylene copolymers
SEBS denotes to styrene/ethylene/butylene/styrene copolymers
SB denotes to styrene/butadiene copolymers
SBS denotes to styrene-butadiene-styrene copolymers
[0027]It should be noted that block copolymers are not the only gelling
agents that can be used in embodiments of the invention. Other types of
polymers also may be used. Homopolymers which are capable of effecting
strong molecular interaction between polymeric chains can be used as
gelling agents. One such example is butyl rubber, which can thicken oil
due to its compatibility with oil and high molecular weight.
Specifically, a polybutadiene polymer sold under the trademark of
Solprene.RTM.. S200, which is available from GIRSA Industrias Negromex,
S. A. de C. V. (INSA), can be used as a gelling agent. Other homopolymers
capable of forming hydrogen bonding may include polyamide, polyester, and
polyolefin. Still another example is alkyl galactomannan, which is
capable of forming strong hydrogen bonding. Alkyl galactomannan is
available from Hercules Incorporated under the trade name of N-HANCE.RTM.
AG50 and AG200. Alkyl galactomannan is a polymer obtained by modifying
natural products. It is especially effective in gelling esters and
naturally-occurring fats and oils.
[0028]In accordance with embodiments of the invention, a gelled ester
composition is obtained by gelling an ester compound with a triblock
copolymer, a star polymer, a radial polymer, a multi-block copolymer, or
mixtures thereof. Optionally, the gelled ester composition may further
include one or more diblock copolymers. When a diblock copolymer is used
along with one of triblock copolymers, star polymers, radial polymers,
and multi-block copolymers, the resulting gel composition is
substantially free of mineral oils. Suitable esters also may be gelled by
alkyl galactomannan, polybutadiene, or other aforementioned polymers.
[0029]Any ester compound may be used in embodiments of the invention to
obtain a gelled ester composition. An ester is defined as a compound that
includes one or more carboxylate groups: R--COO--, where R is hydrogen,
hydrocarbyl, phenyl, methoxyphenyl, alkylphenyl, substituted alkyl,
substituted phenyl, or other organic radicals. Suitable esters include
monoesters, diesters, triesters, etc. For example, one class of suitable
esters that can be gelled is represented by the following formulas:
##STR00002##
[0030]where n=1, 2, 3, and 4, and R.sub.1 includes hydrogen, hydrocarbyl,
phenyl, methoxyphenyl, alkylphenyl, substituted alkyl, and substituted
phenyl; and R.sub.2 includes hydrogen, hydrocarbyl, phenyl,
methoxyphenyl, alkylphenyl, substituted alkyl, substituted phenyl,
alkylene, phenylene, substituted alkylene, substituted phenylene, etc. It
is noted that a suitable group for R.sub.2 depends on whether n is 1, 2,
3, or 4.
[0031]Another class of suitable esters that may be gelled in embodiments
of the invention is represented by the following formula:
##STR00003##
[0032]where R.sub.3 includes alkylene, phenylene, substituted alkylene,
and substituted phenylene.
[0033]Still another class of suitable esters that may be gelled in
embodiments of the invention is represented by the following formula:
##STR00004##
[0034]where R.sub.4, R.sub.5, and R.sub.6 individually include alkylene,
phenylene, substituted alkylene, and substituted phenylene; R.sub.7,
R.sub.8, and R.sub.9 individually include hydrogen, hydrocarbyl, phenyl,
methoxyphenyl, alkylphenyl, substituted alkyl, and substituted phenyl.
[0035]Preferred esters and their chemical formulas are listed in Table 2.
TABLE-US-00002
TABLE 2
Chemical Name Chemical Formula
Isononyl Isononanoate ##STR00005##
Isopropyl Palmitate ##STR00006##
C.sub.12-15 alkyl benzoate ##STR00007##
Myristyl Neopentanoate ##STR00008##
Tridecyl Salicylate ##STR00009##
Octyl Methoxycinnamate ##STR00010##
Propylene glycol dicaprylate/caprate ##STR00011##
Pentaerythrityl tetraisostearate ##STR00012##
Trimethylolpropane triisostearate ##STR00013##
Glyceryl isostearate ##STR00014##
Diisononyl adipate ##STR00015##
Trioctyldodecyl citrate ##STR00016##
Other suitable esters include, but are not limited to, the following
compounds: Acefylline Methylsilanol Mannuronate; Acetaminosalol;
Acetylated Cetyl Hydroxyprolinate; Acetylated Glycol Stearate; Acetylated
Sucrose Distearate; Acetylmethionyl Methylsilanol Elastinate; Acetyl
Tributyl Citrate; Acetyl Triethyl Citrate; Acetyl Trihexyl Citrate;
Aleurites Moluccana Ethyl Ester; Allethrins; Allyl Caproate; Amyl
Acetate; Amyl Benzoate; Amyl Salicylate; Arachidyl Behenate; Arachldyl
Glycol Isostearate; Arachldyl Propionate; Ascorbyl Dipalmitate; Ascorbyl
Palmitate; Ascorbyl Stearate; Aspartame; Batyl Isostearate; Batyl
Stearate; Bean Palmitate; Behenyl Beeswax; Behenyl Behenate; Behenyl
Benzoate; Behenyl Erucate; Behenyl Isostearate; Behenyl/Isostearyl
Beeswax; 1,2,4-Benzenetriacetate; Benzoin (Styrax Bensoin) Gum;
Benzoxiquine; Benzyl Acetate; Benzyl Benzoate; Benzyl Cinnamate; Benzyl
Hyaluronate; Benzyl Laurate; Benzyl Nicotinate; Benzylparaben; Benzyl
Salicylate; Beta-Sitosteryl Acetate; Borago Officinalis Ethyl Ester;
Butoxyethyl Acetate; Butoxyethyl Nicotinate; Butoxyethyl Stearate; Butyl
Acetate; Butyl Acetyl Ricinoleate; Butyl Benzoate; Butyl Benzyl
Phthalate; 2-t-Butylcyclohexyl Acetate; Butylene Glycol
Dicaprylate/Dicaprate; Butylene Glycol Montanate; Butyl Ester of
Ethylene/MA Copolymer; Butyl Ester of PVM/MA Copolymer; Butylglucoside
Caprate; Butyl Isostearate; Butyl Lactate; Butyl Methacrylate; Butyl
Myristate; Butyloctyl Beeswax; Butyloctyl Benzoate; Butyloctyl
Candelillate; Butyloctyl Oleate; Butyloctyl Salicylate; Butyl Oleate;
Butyl PABA; Butylparaben; Butyl Phthalyl Butyl Glycolate; Butyl Stearate;
Butyl Thioglycolate; Butyroyl Trihexyl Citrate; C18-36 Acid Glycol Ester;
C12-20 Acid PEG-8 Ester; Caffeine Benzoate; Calcium Pantetheine
Sulfonate; Calcium Stearoyl Lactylate; C-18-28 Alkyl Acetate; C18-38
Alkyl Beeswax; C30-50 Alkyl Beeswax; C20-40 Alkyl Behenate; C18-38 Alkyl
C24-54 Acid Ester; C-8 Alkyl Ethyl Phosphate; C18-38 Alkyl
Hydroxystearoyl Stearate; C12-13 Alkyl Lactate; C12-15 Alkyl Lactate;
C12-13 Alkyl Octanoate; C12-15 Alkyl Octanoate; C12-15 Alkyl Salicylate;
C18-36 Alkyl Stearate; C20-40 Alkyl Stearate; C30-50 Alkyl Stearate;
C40-60 Alkyl Stearate; Caproyl Ethyl Glucoside; Capryloyl Salicylic Acid;
Caprylyl Butyrate; Castor Oil Benzoate; C10-30 Cholesterol/Lanosterol
Esters; Cellulose Acetate; Cellulose Acetate Butyrate; Cellulose Acetate
Propionate; Cellulose Acetate Propionate Carboxylate; Ceteareth-7
Stearate; Cetearyl Behenate; Cetearyl Candelillate; Cetearyl
Isononanoate; Cetearyl Octanoate; Cetearyl Palmitate; Cetearyl Stearate;
Cetyl Acetate; Cetyl Acetyl Ricinoleate; Cetyl Caprylate; Cetyl
C12-15-Pareth-9 Carboxylate; Cetyl Glycol Isostearate; Cetyl
Isononanoate; Cetyl Lactate; Cetyl Laurate; Cetyl Myristate; Cetyl
Octanoate; Cetyl Oleate; Cetyl Palmitate; Cetyl PCA; Cetyl PPG-2
Isodeceth-7 Carboxylate; Cetyl Ricinoleate; Cetyl Ricinoleate Benzoate;
Cetyl Stearate; C16-20 Glycol Isostearate; C20-30 Glycol Isostearate;
C14-16 Glycol Palmitate; Chimyl Isostearate; Chimyl Stearate; Chlorogenic
Acids; Cholesteryl Acetate; Cholesteryl/Behenyl/Octyldodecyl Lauroyl
Glutamate; Cholesteryl Butyrate; Cholesteryl Dichlorobenzoate;
Cholesteryl Hydroxystearate; Cholesteryl Isostearate; Cholesteryl
Isostearyl Carbonate; Cholesteryl Lanolate; Cholesteryl Macadamiate;
Cholesteryl Nonanoate; Cholesteryl/Octyldodecyl Lauroyl Glutamate;
Cholesteryl Oleate; Cholesteryl Stearate; Cinnamyl Acetate; Cinoxate;
Citronellyl Acetate; Coco-Caprylate/Caprate; Coco Rapeseedate; Cocoyl
Ethyl Glucoside; Copper PCA Methylsilanol; Corylus Avellanna Ethyl Ester;
C12-15 Pareth-9 Hydrogenated Tallowate; C11-15 Pareth-3 Oleate; C12-15
Pareth-12 Oleate; C11-15 Pareth-3 Stearate; C11-15 Pareth-12 Stearate;
Decyl Isostearate; Decyl Myristate; Decyl Oleate; Decyl Succinate; DEDM
Hydantoin Dilaurate; Dextrin Behenate; Dextrin Laurate; Dextrin
Myristate; Dextrin PaInitate; Dextrin Stearate; Diacetin; Dibutyl
Adipate; Dibutyl Oxalate; Dibutyl Phthalate; Dibutyl Sebacate; Di-C12-15
Alkyl Adipate; Di-C12-15 Alkyl Fumarate; Di-C12-13 Alkyl Malate;
Di-C12-13 Alkyl Tartrate; Di-C14-15 Alkyl Tartrate; Dicapryl Adipate;
Dicaprylyl Maleate; Dicetearyl Dimer Dilinoleate; Dicetyl Adipate;
Dicetyl Thiodipropionate; Dicocoyl Pentaerythrilyl Distearyl Citrate;
Diethoxyethyl Succinate; Diethyl Acetyl Aspartate; Diethylaminoethyl
Cocoate; Diethylaminoethyl PEG-5 Cocoate; Diethylaminoethyl PEG-5
Laurate; Diethylaminoethyl Stearate; Diethyl Aspartate; Diethylene Glycol
Dibenzoate; Diethylene Glycol Diisononanoate; Diethylene Glycol
Dioctanoate; Diethylene Glycol Dioctanoate/Diisononanoate; Diethyl
Glutamate; Diethyl Oxalate; Diethyl Palmitoyl Aspartate; Diethyl
Phthalate; Diethyl Sebacate; Diethyl Succinate; Digalloyl Trioleate;
Diglyceryl Stearate Malate; Dihexyl Adipate; Dihexyldecyl Lauroyl
Glutamate; Dihydroabietyl Behenate; Dihydroabietyl Methacrylate;
Dihydrocholesteryl Butyrate; Dihydrocholesteryl Isostearate;
Dihydrocholesteryl Macadamiate; Dihydrocholesteryl Nonanoate;
Dihydrocholesteryl Octyldecanoate; Dihydrocholesteryl Oleate;
Dihydrogenated Palmoyl Hydroxyethylmonium Methosulfate; Dihydrogenated
Tallow Phthalate; Dihydrophytosteryl Octyldecanoate; Dihydroxyethylamino
Hydroxypropyl Oleate; Dihydroxyethyl Soyamine Dioleate; Diisobutyl
Adipate; Diisobutyl Oxalate; Diisocetyl Adipate; Diisodecyl Adipate;
Diisopropyl Adipate; Diisopropyl Dimer Dilinoleate; Diisopropyl Methyl
Cinnamate; Diisopropyl Oxalate; Diisopropyl Sebacate;
Diisostearamidopropyl Epoxypropylmonium Chloride; Diisostearoyl
Trimethylolpropane Siloxy Silicate; Diisostearyl Adipate; Diisostearyl
Dimer Dilinoleate; Diisostearyl Fumarate; Diisostearyl Glutarate;
Diisostearyl Malte; Dilaureth-7 Citrate; Dilauryl Thiodipropionate;
Dimethicone Copolyol Acetate; Dimethicone Copolyol Adipate; Dimethicone
Copolyol Almondate; Dimethicone Copolyol Beeswax; Dimethicone Copolyol
Behenate; Dimethicone Copolyol Benzoate; Dimethicone Copolyol Borageate;
Dimethicone Copolyol Cocoa Butterate; Dimethicone Copolyol Dhupa
Butterate; Dimethicone Copolyol Hydroxystearate; Dimethicone Copolyol
Isostearate; Dimethicone Copolyol Kokum Butterate; Dimethicone Copolyol
Lactate; Dimethicone Copolyol Laurate; Dimethicone Copolyol Mango
Butterate; Dimethicone Copolyol Meadowfoamate; Dimethicone Copolyol Mohwa
Butterate; Dimethicone Copolyol Octyldodecyl Citrate; Dimethicone
Copolyol Olivate; Dimethicone Copolyol Phthalate; Dimethicone Copolyol
Sal Butterate; Dimethicone Copolyol Shea Butterate; Dimethicone Copolyol
Stearate; Dimethicone Copoly Undecylenate; Dimethiconol Beeswax;
Dimethiconol Behenate; Dimethiconol Borageate; Dimethiconol Dhupa
Butterate; Dimethiconol Fluoroalcohol Dillnoleic Acid; Dimethiconol
Hydroxystearate; Dimethiconol Illipe Butterate; Dimethiconol Isostearate;
Dimethiconol Kokum Butterate; Dimethiconol Lactate; Dimethiconol Mohwa
Butterate; Dimethiconol Sal Butterate; Dimethiconol Stearate; Dimethyl
Adipate; Dimethylaminoethyl Methacrylate; Dimethyl Brassylate; Dimethyl
Cystinate; Dimethyl Glutarate; Dimethyl Maleate; Dimethyl Oxalate;
Dimethyl Phthalate; Dimethyl Succinate; Dimyristyl Tartrate; Dimyristyl
Thiodipropionate; Dinonoxynol-9 Citrate; Dioctyl Adipate; Dioctyl
Butamido Triazone; Dioctyl Dimer Dilinoleate; Dioctyldodeceth-2 Lauroyl
Glutamate; Dioctyldodecyl Adipate; Dioctyldodecyl Dimer Dilinoleate;
Dioctyldodecyl Dodecanedioate; Dioctyldodecyl Fluoroheptyl Citrate;
Dioctyldodecyl Lauroyl Glutamate; Dioctyldodecyl Stearoyl Dimer
Dilinoleate; Dioctydodecyl Stearoyl Glutamate; Dioctyl Fumarate; Dioctyl
Malate; Dioctyl Maleate; Dioctyl Phthalate; Dioctyl Sebacate; Dioctyl
Succinate; Dioleoyl Edetolmonium Methosulfate; Dipalmitoyl
Hydroxyproline; Dipentaerythrityl Hexacaprylate/Hexacaprate;
Dipentaerythrityl Hexaheptanoate/Hexacaprylate/Hexacaprate;
Dipentaerythrityl Hexahydroxystearate; Dipentaerythrityl
Hexahydroxystearate/Stearate/Rosinate; Dipentaerythrityl
Hexaoctanoate/Behenate; Dipentaerythrityl
Pentahydroxystearate/Isostearat-e; Diphenyl Carbomethoxy Acetoxy
Naphthopyran; Dipropyl Adipate; Dipropylene Glycol Caprylate; Dipropylene
Glycol Dibenzoate; Dipropylene Glycol Salicylate; Dipropyl Oxalate;
Disodium Laureth-7 Citrate; Disodium PEG-5 Laurylcitrate Sulfosuccinate;
Disodium PEG-8 Ricinosuccinate; Disodium Succinoyl Glycyrrhetinate;
Disodium 2-Sulfolaurate; Disteareth-2 Lauroyl Glutamate; Disteareth-5
Lauroyl Glutamate; Distearyl Thiodipropionate; Ditallowoylethyl
Hydroxyethylmonium Methosulfate; Ditridecyl Adipate; Ditridecyl Dimer
Dilinoleate; Ditridecyl Thiodipropionate; Dodecyl Gallate; Erucyl
Arachidate; Erucyl Erucate; Erucyl Oleate; Ethiodized Oil; Ethoxydiglycol
Acetate; Ethoxyethanol Acetate; Ethyl Acetate; Ethyl Almondate; Ethyl
Apricot Kernelate; Ethyl Arachidonate; Ethyl Aspartate; Ethyl Avocadate;
Ethyl Benzoate; Ethyl Biotinate; Ethyl Butylacetylaminopropionate; Ethyl
Cinnamate; Ethyl Cyanoacrylate; Ethyl Cyclolhexyl Propionate; Ethyl
Digydroxypropyl PABA; Dethyl Diisopropylcinnamate; Ethylene Brassylate;
Ethylene Carbonate; Ethy Ester of Hydrolyzed Animal Protein; Ethyl Ester
of Hydrolyzed Keratin; Ethyl Ester of Hydrolyzed Silk; Ethyl Ester of
PVM/MA Copolymer; Ethyl Ferulate; Ethyl Glutamate; Ethyl Isostearate;
Ethyl Lactate; Ethyl Laurate; Ethyl Linoleate; Ethyl Linolenate; Ethyl
Methacrylate; Ethyl Methoxycinnamate; Ethyl Methylphenylglycidate; Ethyl
Minkate; Ethyl Morrhuate; Ethyl Myristate; Ethyl Nicotinate; Ethyl
Oleate; Ethyl Olivate; Ethyl PABA Ethyl Palmitate; Ethylparaben; Ethyl
PCA; Ethyl Pelargonate; Ethyl Persate; Ethyl Phenylacetate; Ethyl
Ricinoleate; Ethyl Serinate; Ethyl Stearate; Ethyl Thioglycolate; Ethyl
Urocanate; Ethyl Wheat Germate; Ethyl Ximenynate; Etocrylene; Farnesyl
Acetate; Galactonolactone; Galbanum (Ferula Galbaniflua) Oil;
Gamma-Nonalacione; Geranyl Acetate; Glucarolactone; Glucose Glutamate;
Glucose Pentaacetate; Glucuronolactone; Glycereth-7 Benzoate; Glycereth-7
Diisononanoate; Glycereth-8 Hydroxystearate; Glycereth-5 Lactate;
Glycereth-25 PCA Isostearate; Glycereth-7 Triacetate; Glyceryl Triacetyl
Hydroxystearate; Glyceryl Triacetyl Ricinoleate; Glycolamide Stearate;
Glycol/Butylene Glycol Montanate; Glycol Catearate; Glycol Dibehenate;
Glycol Dilaurate; Glycol Dioctanoate; Glycol Dioleate; Glycol Distearate;
Glycol Ditallowate; Glycol Hydroxystearate; Glycol Montanate; Glycol
Octanoate; Glycol Oleate; Glycol Palmitate; Glycol Ricinoleate; Glycol
Salicylate; Glycol Stearate; Glycol Stearate SE; Glycyrrhetinyl Stearate;
Hexacosyl Glycol Isostearate; Hexanediol Beeswax; Hexanediol Distearate;
Hexanetriol Beeswax; Hexyldecyl Benzoate; Hexyldecyl Ester of Hydrolyzed
Collagen; Hexyldecyl Isostearate; Hexyldecyl Laurate; Hexyldecyl
Octanoate; Hexyldecyl Oleate; Hexyldecyl Palmitate; Hexyldecyl Stearate;
Hexyldodecyl Salicylate; Hexyl Isostearate; Hexyl Laurate; Hexyl
Nicotinate; Homosalate; Hydrogenated Castor Oil Hydroxystearate;
Hydrogenated Castor Oil Isostearate; Hydrogenated Castor Oil Laurate;
Hydrogenated Castor Oil Stearate; Hydrogenated Castor Oil Triisostearate;
Hydrogenated Methyl Abietate; Hydrogenated Rosin; Hydroquinone PCA;
Hydroxycetyl Isostearate; Hydroxyoctacosanyl Hydroxystearate; Inositol
Hexa-PCA; Iodopropynyl Butylcarbamate; Isoamyl Acetate; Isoamyl Laurate;
Isoamyl p-Methoxycinnamate; Isobutyl Acetate; Isobutylated Lanolin Oil;
Isobutyl Benzoate; Isobutyl Myristate; Isobutyl Palmitate;
Isobutylparaben; Isobutyl Pelargonate; Isobutyl Stearate; Isobutyl
Tallowate; Isoceteareth-8 Stearate; Isoceteth-10 Stearate; Isocetyl
Behenate; Isocetyl Isodecanoate; Isocetyl Isostearate; Isocetyl Laurate;
Isocetyl Linoleoyl Stearate; Isocetyl Myristate; Isocetyl Octanoate;
Isocetyl Palmitate; Isocetyl Salicylate; Isocetyl Stearate; Isocetyl
Stearoyl Stearate; Isodeceth-2 Cocoate; Isodecyl Citrate; Isodecyl
Cocoate; Isodecyl Hydroxystearate; Isodecyl Isononanoate; Isodecyl
Laurate; Isodecyl Myristate; Isodecyl Neopentanoate; Isodecyl Octanoate;
Isodecyl Oleate; Isodecyl Palmitate; Isodecylparaben; Isodecyl
Salicylate; Isodecyl Stearate; Isohexyl Laurate; Isohexyl Neopentanoate;
Isohexyl Palmitate; Isolauryl Behenate; Isomerized Jojoba Oil; Isononyl
Ferulate; Isooctyl Thioglycolate; Isopropyl Acetate; Isopropyl
Arachidate; Isopropyl Avocadate; Isopropyl Behenate; Isopropyl Benzoate;
Isopropylbenzyl Salicylate; Isopropyl Citrate; Isopropyl C12-15-Pareth-9
Carboxylate; Isopropyl Hydroxystearate; Isopropyl Isostearate; Isopropyl
Jojobate; Isopropyl Lanolate; Isopropyl Laurate; Isopropyl Linoleate;
Isopropyl Myristate; Isopropyl Oleate; Isopropylparaben; Isopropyl
PPG-2-Isodeceth-7 Carboxylate; Isopropyl Ricinoleate; Isopropyl Sorbate;
Isopropyl Stearate; Isopropyl Tallowate; Isopropyl Thioglycolate;
Isosorbide Laurate; Isosteareth-10 Stearate; Isostearyl Avocadate;
Isostearyl Behenate; Isostearyl Benzoate; Isostearyl Erucate; Isostearyl
Isononanoate; Isostearyl Isostearate; Isostearyl Isostearoyl Stearate;
Isostearyl Lactate; Isostearyl Laurate; Isostearyl Myristate; Isostearyl
Neopentanoate; Isostearyl Octanoate; Isostearyl Palmitate; Isostearyl
Stearoyl Stearate; Isotridecyl Isononanoate; Isotridecyl Laurate;
Isotridecyl Myristate; Jojoba (Buxus Chinensis) Oil; Jojoba Esters; Kojic
Dipalmitate; Laneth-9 Acetate; Laneth-10 Acetate; Laneth-4 Phosphate;
Lanolin Linoleate; Lanolin Ricinoleate; Laureth-2 Acetate; Laureth-2
Benzoate; Laureth-6 Citrate; Laureth-7 Citrate; Laureth-2 Octanoate;
Laureth-7 Tartrate; Lauroyl Ethyl Glucoside; Lauroyl Lactylic Acid;
Lauryl Behenate; Lauryl Cocoate; Lauryl Isostearate; Lauryl Lactate;
Lauryl Methacrylate; Lauryl Myristate; Lauryl Octanoate; Lauryl Oleate;
Lauryl Palmitate; Lauryl Stearate; Linalyl Acetate; Linoleyl Lactate;
Madecassicoside; Mannitan Laurate; Mannitan Oleate; Menthyl Acetate;
Menthyl Anthranilate; Menthyl Lactate; Menthyl PCA; Menthyl Salicylate;
Methoxyisopropyl Acetate; Methoxy-PEG-7 Rutinyl Succinate; Methyl
Acetate; Methyl Acetyl Ricinoleate; Methyl Anthranilate; Methyl Behenate;
Methyl Benzoate; Methyl Caproate; Methyl Caprylate; Methyl
Caprylate/Caprate; Methyl Cocoate; 6-Methyl Coumarin; Methyl
Dehydroabietate; Methyl Dihydroabietate; Methyldihydrojasmonate; Methyl
Gluceth-20 Benzoate; Methyl Glucose Dioleate; Methyl Glucose Isostearate;
Methyl Glucose Laurate; Methyl Glucose Sesquicaprylate/Sesquicaprate;
Methyl Glucose Sesquicocoate; Methyl Glucose Sesquiisostearate; Methyl
Glucose Sesquilaurate; Methyl Glucose Sesquioleate; Methyl Glucose
Sesquistearate; Methyl Glycyrrhizate; Methyl Hydrogenated Rosinate;
Methyl Hydroxystearate; Methyl Isostearate; Methyl Laurate; Methyl
Linoleate; Methyl 3-Methylresorcylate; Methyl Myristate; Methyl
Nicotinate; Methyl Oleate; Methyl Palmate; Methyl Palmitate;
Methylparaben; Methyl Pelargonate; Methyl Ricinoleate; Methyl Rosinate;
Methyl Salicylate; Methylsilanol Acetylmethionate; Methylsilanol
Carboxymethyl Theophylline; Methylsilanol Carboxymethyl Theophylline
Alginate; Methylsilanol Hydroxyproline; Methylsilanol Hydroxyproline
Aspartate; Methylsilanol Mannuronate; Methylsilanol PCA; Methyl Soyate;
Methyl Stearate; Methyl Thioglycolate; Monosaccharide Lactate Condensata;
Myreth-3 Caprate; Myreth-3 Laurate; Myreth-2 Myristate; Myreth-3
Myristate; Myreth-3 Octanoate; Myreth-3 Palmitate; Myristoyl Ethyl
Glucoside; Myristoyl Lactylic Acid; Myristyl Isostearate; Myristyl
Lactate; Myristyl Lignocerate; Myristyl Myristate; Myristyl Octanoate;
Myristyl Propionate; Myristyl Salicylate; Myristyl Stearate; Neopentyl
Glycol Dicaprate; Neopentyl Glycol Dicaprylate/Dicaprate; Neopentyl
Glycol Dicaprylate/Dipelargonate/Dicaprate; Neopentyl Glycol
Diheptanoate; Neopentyl Glycol Diisostearate; Neopentyl Glycol Dilaurate;
Neopentyl Glycol Dioctanoate; Nonyl Acetate; Nopyl Acetate; Octacosanyl
Glycol Isostearate; Octocrylene; Octyl Acetoxystearate; Octyl Benzoate;
Octyl Caprylate/Caprate; Octyl Cocoate; Octyldecyl Oleate; Octyldodecyl
Behenate; Octyldodecyl Benzoate; Octyldodecyl Erucate; Octyldodecyl
Hydroxystearate; Octyldodecyl Isostearate; Octyldodecyl Lactate;
Octyldodecyl Lanolate; Octyldodecyl Meadowfoamate; Octyldodecyl
Myristate; Octyldodecyl Neodecanoate; Octyldodecyl Neopentanoate;
Octyldodecyl Octanoate; Octyldodecyl Octyldodecanoate; Octyldodecyl
Oleate; Octyldodecyl Olivate; Octyldodecyl Ricinoleate; Octyldodecyl
Stearate; Octyldodecyl Steroyl Stearate; Octyl Gallate; Octyl
Hydroxystearate; Octyl Hydroxystearate Benzoate; Octyl Isononanoate;
Octyl Isopalmitate; Octyl Isostearate; Octyl Laurate; Octyl Linoleayl
Stearate; Octyl Methoxycinnamate; Octyl Myristate; Octyl Neopentanoate;
Octyl Octanoate; Octyl Oleate; Octyl Palmitate; Octyl PCA; Octyl
Pelagonate; Octyl Salicylate; Octyl Stearate; Oleoyl Ethyl Glucoside;
Oleth-2 Benzoate; Oleyl Acetate; Oleyl Arachidate; Oleyl Erucate; Oleyl
Ethyl Phosphate; Oleyl Lactate; Oleyl Lanolate; Oleyl Linoleate; Oleyl
Myristate; Oleyl Oleate; Oleyl Phosphate; Oleyl Stearate; Oryzanol;
Ozonized Jojoba Oil; Palmitoyl Carniline; Palmitoyl Inulin; Palmitoyl
Myristyl Serinate; Pantethine; Panthenyl Ethyl Ester Acetate; Panthenyl
Triacetate; PCA Glyceryl Oleate; Pea Palmitate; PEG-18 Castor Oil
Dioleate; PEG-5 DEDM Hydantoin Oleate; PEG-15 DEDM Hydantoin Stearate;
[0036]PEG-30 Dipolyhydroxystearate; PEG-20 Hydrogenated Castor Oil
Isostearate; PEG-50 Hydrogenated Castor Oil Isostearate; PEG-20
Hydrogenated Castor Oil Triisostearate; PEG-20 Mannitan Laurate; PEG-20
Methyl Glucose Distearate; PEG-80 Methyl Glucose Laurate; PEG-20 Methyl
Glucose Sesquicaprylate/Sesquicaprate; PEG-20 Methyl Glucose
Sesquilaurate; PEG-5 Oleamide Dioleate; PEG-150 Pentaerythrityl
Tetrastearate; PEG-3/PPG-2 Glyceryl/Sorbitol Hydroxystearate/Isostearate;
PEG-4 Proline Linoleate; PEG-4 Proline Linolenate; PEG-8 Propylene Glycol
Cocoate; PEG-55 Propylene Glycol Oleate; PEG-25 Propylene Glycol
Stearate; PEG-75 Propylene Glycol Stearate; PEG-120 Propylene Glycol
Stearate; PEG-40 Sorbitol Hexaoleate; PEG-50 Sorbitol Hexaoleate; PEG-30
Sorbitol Tetraoleate Laurate; PEG-60 Sorbitol Tetrastearate; PEG-5
Tricapryl Citrate; PEG-5 Tricetyl Citrate; PEG-5 Trilauryl Citrate; PEG-5
Trimethylolpropane Trimyristate; PEG-5 Trimyristyl Citrate; PEG-5
Tristearyl Citrate; PEG-6 Undecylenate; Pentadecalacione; Pentaerythrityl
Dioleate; Pentaerythrityl Distearate; Pentaerythrityl Hydrogenated
Rosinate; Pentaerythrityl Isostearate/Caprate/Caprylate/Adipate;
Pentaerythrityl Rosinate; Pentaerythrityl Stearate; Pentaerythrityl
Stearate/Caprate/Caprylate/Adipate; Pentaerythrityl
Stearate/Isostearate/Adipate/Hydroxystearate; Pentaerythrityl
Tetraabietate; Pentaerythrityl Tetraacetate; Pentaerythrityl
Tetrabehenate; Pentaerythrityl Tetrabenzoate; Petaerythrityl
Tetracaprylate/Tetracaprate; Pentaerythrityl Tetracocoate;
Pentaerythrityl Tetraisononanoate; Pentaerythrityl Tetralaurate;
Pentaerythrityl Tetramyristate; Pentaerythrityl Tetraoctanoate;
Pentaerythrityl Tetraoleate; Pentaerythrityl Tetrapelargonate;
Petaerythrityl Tetrastearate; Pentaerythrityl Trioleate; Phenethyl
Acetate; Phenolphthalein; Phenoxyethylparaben; Phenyl Benzoate;
Phenylparaben; Phenyl Salicylate; Phylosteryl Macadamiate; Poloxamer 105
Benzoate; Poloxamer 182 Dibenzoate; Polycaprolactone;
Polydimethylaminoethyl Methacrylate; Polyethylacrylate;
Polyethylglutamate; Polyethylmethacrylate; Polymethyl Acrylate;
Polymethylglutamate; Polysorbate 80 Acetate; Polyvinyl Acetate; Potassium
Butylparaben; Potassium Deceth-4 Phosphate; Potassiu Ethylparaben;
Potassium Methylparaben; Potassium Propylparaben; PPG-2 Isoceleth-20
Acetate; PPG-14 Laureth-60 Alkyl Dicarbamate; PPG-20 Methyl Glucose Ether
Acetate; PPG-20 Methyl Glucose Ether Distearate; PPG-2 Myristyl Ether
Propionate; PPG-14 Palmeth-60 Alkyl Dicarbamate; PPG-15 Steryl Ether
Benzoate; Pregnenolone Acetate; Propyl Acetate; Propyl Benzoate;
Propylene Carbonate; Propylene Glocol Alginate; Propylene Glycol
Behenate; Propylene Glycol Caprylate; Propylene Glycol Ceteth-3 Acetate;
Propylene Glycol Ceteth-3 Propionate; Propylene Glycol Citrate; Propylene
Glycol Cocoate; Propylene Glycol Dicaprate; Propylene Glycol Dicaproate;
Propylene Glycol Dicaprylate; Propylene Glycol Dicocoate; Propylene
Glycol Diisononanoate; Propylene Glycol Diisostearate; Propylene Glycol
Dilaurate; Propylene Glycol Dioctanoate; Propylene Glycol Dioleate;
Propylene Glycol Dipelargonate; Propylene Glycol Distearate; Propylene
Glycol Diundecanoate; Propylene Glycol Hydroxystearate; Propylene
Glycollsoceteth-3 Acetate; Propylene Glycol Isostearate; Propylene Glycol
Laurate; Propylene Glycol Linoleate; Propylene Glycol Linolenate;
Propylene Glycol Myristate; Propylene Glycol Myristyl Ether Acetate;
Propylene Glycol Oleate; Propylene Glycol Oleate SE; Propylene Glycol
Ricinoleate; Propylene Glycol Soyate; Propylene Glycol Stearate;
Propylene Glycol Stearate SE; Propyl Gallate; Propylparaben; Pyricarbate;
Pyridoxine Dicaprylate; Pyridoxine Dilaurate; Pyridoxine Dioctenoate;
Pyridoxine Dipalmitate; Pyridoxine Glycyrrhetinate; Pyridoxine
Tripalmitate; Raffinose Myristate; Raffinose Oleate; Resorcinol Acetate;
Retinyl Acetate; Retinyl Linoleate; Retinyl Palmitate; Retinyl
Propionate; Riboflavin Tetraacetate; Ribonolaclone; Rosin Acrylate;
Siloxanetriol Phytate; Silybum Marianum Ethyl Ester; Sodium Behenoyl
Lactylate; Sodium Butylparaben; Sodium Caproyl Lactylate; Sodium Cocoyl
Lactylate; Sodium Dilaureth-7 Citrate; Sodium Ethylparaben; Sodium Ethyl
2-Sulfolaurate; Sodium Isostearoyl Lactylate; Sodium Laureth-7 Tartrate;
Sodium Lauroyl Lectylate; Sodium Methylparaben; Sodium Methyl
2-Sulfolaurate; Sodium Oleoyl Lactylate; Sodium Panteheine Sulfonate;
Sodium Phytate; Sodium Propylparaben; Sodium Stearoyl Lactylate;
Sorbeth-2 Cocoate; Sorbeth-6 Hexastearate; Sorbeth-3 Isostearate;
Sorbityl Acetate; Soybean Palmitate; Soy Sterol Acetate; Stearamide
DEA-Distearate; Stearamide DIBA-Stearate; Stearamide MEA-Stearate;
Steareth-5 Stearate; Stearoyl Lactylic Acid; Stearyl Acetate; Stearyl
Acetyl Glutamate; Stearyl Beeswax; Stearyl Behenate; Stearyl Benzoate;
Stearyl Caprylate; Stearyl Citrate; Stearyl Erucate; Stearyl Glycol
Isostearate; Stearyl Glycyrrhetinate; Stearyl Heptanoate; Stearyl
Lactate; Stearyl Linoleate; Stearyl Octanoate; Stearyl Stearate; Stearyl
Stearoyl Stearate; Sucrose Acetate Isobutyrate; Sucrose Benzoate; Sucrose
Cocoate; Sucrose Dilaurate; Sucrose Distearate; Sucrose Laurate; Sucrose
Myristate; Sucrose Octaacetate; Sucrose Oleate; Sucrose Palmitate;
Sucrose Polybehenate; Sucrose Polycottonseedate; Sucrose Polylaurate;
Sucrose Polylinoleate; Sucrose Polypalmate; Sucrose Polysoyate; Sucrose
Polystearate; Sucrose Ricinoleate; Sucrose Stearate; Sucrose
Tetrastearate Triacetate; Sucrose Tribehenate; Sucrose Tristearate;
Tallowoyl Ethyl Glucoside; Tannic Acid; TEA-Lauroyl Lactylate;
Telmesteine; Terpineol Acetate; Tetrabutyl Phenyl Hydroxybenzoate;
Tetradecyleicosyl Stearate; Tetrahexyldecyl Ascorbate; Tetrahydrofurfuryl
Acetate; Tetrahydrofurfuryl Ricinoleate; Tocophersolan; Tocopheryl
Acetate; Tocopheryl Linoleate; Tocopheryl Linoleate/Oleate; Tocopheryl
Nicotinate; Tocopheryl Succinate; Tributyl Citrate; Tri-C12-13 Alkyl
Citrate; Tri-C14-15 Alkyl Citrate; Tricaprylyl Citrate; Tridecyl
Behenate; Tridecyl Cocoate; Tridecyl Erucate; Tridecyl Isononanoate;
Tridecyl Laurate; Tridecyl Myristate; Tridecyl Neopentanoate; Tridecyl
Octanoate; Tridecyl Stearate; Tridecyl Stearoyl Stearate; Tridecyl
Trimellitate; Triethyl Citrate; Triethylene Glycol hydrogenated Rosinate;
Trihexyldecyl Citrate; Triisocetyl Citrate; Triisopropyl Citrate;
Triisopropyl Trilinoleate; Triisostearyl Citrate; Triisostearyl
Trilinoleate; Trilactin; Trilauryl Citrate; Trimethylolpropane
Tricaprylate/Tricaprate; Trimethylolpropane Tricocoate;
Trimethylolpropane Trilaurate; Trimethylalpropane Trioctanoate;
Trimethylolpropane Tristearate; Trimethyl Pentanyl Diisobutyrate;
Trioctyl Citrate; Trioctyldodecyl Borate; Trictyl Trimellitate; Trioleyl
Citrate; TriPABA Panthenol; Tripropylene Glycol Citrate; Tristearyl
Citrate; Tristearyl Phosphate; Vinyl Acetate; and Yeast Palmitate.
[0037]In addition to esters, alcohols may be gelled to form a gelled
alcohol by using a diblock copolymer, a triblock copolymer, a star
polymer, a radial polymer, a multi-block copolymer, and mixtures thereof.
Suitable alcohols also may be gelled by alkyl galactomannan,
polybutadiene, or other aforementioned polymers. Any alcohols as
represented by the following formula may be gelled in embodiments of the
invention.
R--H
[0038]where R represents any organic functional group which includes, but
is not limited to, hydrocarbyl, phenyl, methoxyphenyl, and alkylphenyl,
substituted alkyl, substituted phenyl, etc. Preferred alcohols include,
but are not limited to, isostearyl alcohol, and octyl dodecanol. Other
suitable alcohols include, but are not limited to, Abietyl Alcohol;
Arachidyl Alcohol; Batyl Alcohol; Behenyl Alcohol; Benzyl Alcohol;
Bishydroxyethyl Biscetyl Malonamide; Borneol;
2-t-Butylcyclohexyloxybutan-ol; Butyloctanol; C9-11 Alcohol; C12-13
Alcohol; C12-15 Alcohol; C12-16 Alcohol; C14-15 Alcohol; C-20-40
Alcohols; C30-50 Alcohols; C40-60 Alcohols; C18-38 Alkyl Hydroxystearoyl
Stearate; Camphylcyclohexanol; Caproyl Sphingosine; Caprylic Alcohol;
Caprylyl Glycol; CD Alcohol 19; Ceramide 1; Ceramide 2; Ceramide 3;
Ceramide 4; Ceramide 5; Ceramide 1A; Ceramide 6 II; Cetearyl Alcohol;
Cetyl Alcohol; Cetylarachidol; Cetyl Glycol; C9-13 Fluoroalcohol; C14-18
Glycol; C15-18 Glycol; C18-30 Glycol; C20-30 Glycol; Chimyl Alcohol;
Chlorphenesin; Choleclciferol; Cholesterol; Cinnamyl Alcohol;
Citronellol; Coconut Alcohol; Decyl Alcohol; Decyltetradecanol;
7-Dehydrocholesterol; Dichlorobenzyl Alcohol; Dihydrocholesterol;
Dihydrolanosterol; Dihydroxyacetone; Dihydroxyethylamino Hydroxypropyl
Oleate; 2,6-Dimethyl-7-Octen-2-ol; Dimethyl Octynediol; Dimethyl
Phenylpropanol; Dodecylhexadecanol; Dodecyltetradecanol; Ergocalciferol;
Ethyl Hexanediol; Farnesol; Galactonolactone; Geraniol; Glycyrrhetinic
Acid; Glycyrrhizic Acid; Heptylundecanol; Hexacosyl Glycol; 3-Hexenol;
Hexyl Alcohol; Hexyldecanol; Hexyldecyloctadecanol; Hexylene Glycol;
Hinokitiol; Hydroabietyl Alcohol; Hydrogenated Ethylbicycloneplane
Guaiacol; Hydrogenated Tallow Alcohol; Hydrolyzed Glycyrrhizinate;
Hydroxycapric Acid; Hydroxycaproyl Phytosphingosine; Hydroxycaprylic
Acid; Hydroxycapryloyl Phytosphingosine; Hydroxyethyl Palmityl
Oxyhydroxypropyl Palmitamide; Hydroxylauric Acid; Hydroxylauroyl
Phytosphingosine; Hydroxymethyl Dioxoazabicyclooctane; Hydroxyproline;
Hydroxystearyl Cetyl Ether; Jojoba Alcohol; Lactoyl Phytosphingosine;
Lanolin Alcohol; Lauryl Alcohol; Lauryl Glycol; Linalool; p-Menthan-7-ol;
Menthol; Menthone Glycerin Acetal; 3-Methylamino-4-Nitrophenoxyethanol;
Methyl Glycyrrhiziate; Methylsilanol Hydroxyproline; Myricyl Alcohol;
Myristyl Alcohol; Nicotinyl Alcohol; Nicotinyl Tartrate;
3-Nitro-4-Aminophenoxyeth-anol; Octacosanyl Glycol; Octoxyglycerin;
Octoxyglyceryl Behenate; Octyldodecanol; 2-Oeamido-1,3-Octadecanediol;
Oleyl Alcohol; Palm Alcohol; Palm Kernel Alcohol;
Palmitamidohexadecanediol; Panthenol; Panthenyl Ethyl Ether; Panthenyl
Hydroxypropyl Steardimonium Chloride; Pentadecyl Alcohol; Pentylene
Glycol; Phenethyl Alcohol; Phenoxyethanol; Phenoxyisopropanol;
Phenylisohexanol; Phenylpropanol; Phytosphingosine; Polyvinyl Alcohol;
Propanediol; Propyl Alcohol; Propylene Glycol; Pyridoxine
Glycyrrhetinate; Retinol; Ribonolactone; N-Stearoyl-Dihydroshingosine;
Stearyl Alcohol; Stearyl Glycol; Tallow Alcohol; Terpineol;
Tetradecyleicosanol; Tetradecyloctadecanol; Tetrahydrofurfuryl Alcohol;
Tetramethyl Cyclopentene Butenol; Tetramethyl Decynediol; Tridecyl
Alcohol; Trimethylhexanol; Troxerutin; Undeceth-3; Undecylenyl Alcohol;
and Undecylpentadecanol.
[0039]Numerous ethers also may be gelled to form gelled ether compositions
by using a diblock copolymer, triblock copolymer, star polymer, radial
polymer, multi-block copolymer, or mixtures thereof. Suitable ethers also
may be gelled by alkyl galactomannan, polybutadiene, or other
aforementioned polymers. Generally, an ether compound is represented by
the following formula:
R--O--R'
[0040]where R and R' individually include, but are not limited to,
hydrocarbyl, phenyl, methoxyphenyl, alkylphenyl, substituted alkyl,
substituted phenyl, etc. Preferred ethers include, but are not limited
to, dicarylyl ether and octyl methoxycinnamate. Dicarylyl either is
represented by the following chemical formula.
C.sub.8H.sub.17--O--C.sub.8H.sub.17
[0041]Other suitable ethers include, but are not limited to, Anethole;
p-Anisic Acid; Batyl Alcohol; Batyl Isostearate; Batyl Stearate;
Benzylhemiformal; 1,3-Bis-(2,4-Diaminophenoxy) propane; Butoxyethyl
Acetate; Butoxyethyl Nicotinate; Butoxyethyl Stearate; Butoxypropanol;
2-t-Butylcyclohexyloxybutanol; Butyl Glucoside; Butylglucoside Caprate;
Butyl Methoxydibenzoylmethane; Caprylyl/Capryl Glucoside; Capsaicin;
Carboxymethyl Chitin; Carboxymethyl Chitosan Succinamide; Carboxymethyl
Dextran; Cetearyl Glucoside; Cetyl Glyceryl Ether; Cetyl-PG Hydroxyethyl
Decanamide; Cetyl-PG Hydroxyethyl Palmitamide; Chimyl Alcohol; Chimyl
Isostearate; Chimyl Stearate; Chlorphenesin; Cinoxate; Cocamidopropyl
Lauryl Ether; Coceth-4 Glucoside; Coco-Glucoside; Dibenzylidene Sorbitol;
Dicetyl Ether; Dichlorophenyl Imidazoidioxolan; Dimethicone Copolyol
Butyl Ether; Dimethicone Copolyol Ethyl Ether; Dimethicone Copolyol
Methyl Ether; Dimethyl Hexahydronaphthyl Dihydroxymethyl Acetal; Dimethyl
Isosorbide; Dioleyl Tocopheryl Methylsilanol; Diosmine; Disodium Cetyl
Phenyl Ether Disulfonate; Disodium Decyl Phenyl Ether Disulfonate;
Disodium Lauryl Phenyl Ether Disulfonate; Distarch Glyceryl Ether;
Distearyl Ether; Ethoxydiglycol Acetate; Ethoxyheptyl Bicyclooctanone;
7-Ethylbicyclooxazolidine; Ethyl Methoxycinnamate; Ethyl
Methylphenylglycidate; Ethyl Phenethyl Acetal; Eucalyptol; Eugenol;
Ferulic Acid; Glyceryl Octanoate Dimethoxycinnamate; Glycofurol;
Hexamethylindanopyran; Hexamidine; Hexamidine Diparaben; Hexamidine
Paraben; Hydrogenated Ethylbicycloheptane Guaiacol; p-Hydroxyanisole;
Hydroxydecyl Maltitol; Hydroxyethyl Glyceryl Oleate/Stearate;
Hydroxyethyl Palmityl Oxyhydroxypropyl Palmitamide; Hydroxyethyl
Sorbitol; Hydroxymethoxybenzyl Pelargonamide; Hydroxypropyl Starch
Phosphate; Hydroxystearyl Cetyl Ether; Isobutyl Methyl Tetrahydropyranol;
Isoeugenol; Isolongifolene Epoxide; Isopropyl Hydroxycetyl Ether;
Isostearamidopropyl Epoxypropyl Dimonium Chloride; Isostearyl Glyceryl
Ether; Isostearyl Glyceryl Pentaerythrityl Ether; Lauryl Polyglyceryl-6
Cetearyl Glycol Ether; Melatonin; Menthone Glycerin Acetal;
Methoxylndane; Methoxyisopropyl Acetate; Methoxymethylbutanol;
Methoxypropylgluconamide; Methylal; Ethyl Eugenol; Methyl Hexyl Ether;
Methylsilanol Ascorbate; Myristyl-PG Hydroxyethyl Decanamide;
4-Nitroguaiacol; Octoxyglycerin; Octoxyglyceryl Behenate; Octoxyglyceryl
Palmitate; Octyl Glyceryl Palmitate; Oleyl Glyceryl Ether; Panthenyl
Ethyl Ether; Panthenyl Ethyl Ether Acetate; Panthenyl Hydroxypropyl
Steardimonium Chloride; PEG-3 2,2-Di-p-Phenylenediamine; PEG-4 Ditallow
Ether; PEG-150 Pentaerythrityl Tetrastearate; p-Phenetidine;
Phenoxzyethanol; Phenoxyethylparaben; Phenoxyisopropanol; Polyglycerin-3;
Polyglycerin-4; Polyglycerin-6; Polyglycerin-10; Polyglyceryl-3 Cetyl
Ether; Polyglyceryl-3 Decyltetradecyl Ether; Polyglyceryl-3 Hydroxylauryl
Ether; Polyglyceryl-2 Lanolin Alcohol Ether; Polyglyceryl-4 Lauryl Ether;
Polyglyceryl-2 Oleyl Ether; Polyglyceryl-4 Oleyl Ether; Polyglyceryl
Sorbitol; Polyvinyl Methyl Ether; Polyvinyl Stearyl Ether; PPG-9
Diglyceryl Ether; PPG-1-PEG-9 Lauryl Glycol Ether; Propylene Glycol
Myristyl Ether; Quassin; Silanetriol Trehalose Ether; TEA-Lauryl Ether;
Tetrahydrodiferuloylmethane; Thiodiglycol; Triclosan; Triethylene Glycol;
Trihydroxypalmitamidohydroxypropyl Myristyl Ether;
Trimethoxycaprylylsilane; Troxerutin; and Ubiquinone.
[0042]Embodiments of the invention may also be used to obtain gelled
natural products, such as naturally-occurring fats and oils.
"Naturally-occurring fats and oils" often refer to the glyceryl esters of
fatty acids (i.e., triglycerides) normally found in animal or plant
tissues, including those which have been hydrogenated to reduce or
eliminate unsaturation. Naturally occurring fats and oils include
vegetable oils. Selected naturally-occurring fats and oils are
represented by the following formula:
##STR00017##
[0043]where R, R' and R'' may be the same or different fatty acid
radicals.
[0044]Suitable naturally-occurring fats and oils that may be gelled by
using a diblock copolymer, triblock copolymer, star polymer, radial
polymer, multi-block copolymer or mixtures thereof. Suitable
naturally-occurring fats and oils also may be gelled by alkyl
galactomannan, polybutadiene, or other aforementioned polymers. Examples
of the suitable naturally-occurring fats and oils include, but are not
limited to, Adansonla Digitata Oil; Apricot (Prunus Armeniaca) Kernel
Oil; Argania Spinosa Oil; Argemone Mexicana Oil; Avocado (Persea
Gratissima) Oil; Babassu (Orbignya Olelfera) Oil; Balm Mint (Melissa
Officinalis) Seed Oil; Bitter Almond (Prunus Amygdalus Amara) Oil; Bitter
Cherry (Prunus Cerasus) Oil; Black Currant (Ribes Nigrum) Oil; Borage
(Borago Officinalis) Seed Oil; Brazil (Bertholletia Excelsa) Nut Oil;
Burdock (Arctium Lappa) Seed Oil; Butter; C12-18 Acid Triglyceride;
Calophyllum Tacamahaca Oil; Camellia Kissi Oil; Camellia Oleifera Seed
Oil; Canola Oil; Caprylic/Capric/Lauric Triglyceride;
Caprylic/Capric/Linoleic Triglyceride; Caprylic/Capric/Myristic/Stearic
Triglyceride; Caprylic/Capric/Stearic Triglyceride; Caprylic/Capric
Triglyceride; Caraway (Carum Carvi) Seed Oil; Carrot (Daucus Carota
Sativa) Oil; Cashew (Anacardium Occidentale) Nut Oil; Castor Oil
Benzoate; Castor (Ricinus Communis) Oil; Cephalins; Chaulmoogra
(Taraktogenos Kurzii) Oil, Chia (Salvia Hispanica) Oil; Cocoa (Theobrama
Cocao) Butter; Coconut (Cocos Nucifera) Oil; Cod Liver Oil; Coffee
(Coffea Arabica) Oil; Corn (Zea Mays) Germ Oil; Corn (Zea Mays) Oil;
Cottonseed (Gossypium) Oil; C10-18 Triglycerides; Cucumber (Cucumis
Sativus) Oil; Dog Rose (Rosa Canina) Hips Oil; Egg Oil; Emu Oil;
Epoxidized Soybean Oil; Evening Primrose (Oenothera Biennis) Oil; Fish
Liver Oil; Gevuina Avellana Oil; Glyceryl Triacetyl Hydroxystearate;
Glyceryl Triacetyl Ricinoleate; Glycolipids; Glycosphingolipids; Goat
Butter; Grape (Vitis Vinifera) Seed Oil; Hazel (Croylus Americana) Nut
Oil; Hazel (Corylus Aveilana) Nut Oil; Human Placental Lipids; Hybrid
Safflower (Carthamus Tinctorius) Oil; Hybrid Sunflower (Helianthus
Annuus) Seed Oil; Hydrogenated Canola Oil; Hydrogenated Castor Oil;
Hydrogenated Castor Oil Laurate; Hydrogenated Castor Oil Triisostearate;
Hydrogenated Coconut Oil; Hydrogenated Cottonseed Oil; Hydrogenated
C12-18 Triglycerides; Hydrogenated Fish Oil; Hydrogenated Lard;
Hydrogenated Menhaden Oil; Hydrogenated Milk Lipids; Hydrogenated Mink
Oil; Hydrogenated Olive Oil; Hydrogenated Orange Roughy Oil; Hydrogenated
Palm Kernel Oil; Hydrogenated Palm Oil; Hydrogenated Peanut Oil;
Hydrogenated Rapeseed Oil; Hydrogenated Shark Liver Oil; Hydrogenated
Soybean Oil; Hydrogenated Tallow; Hydrogenated Vegetable Oil; Isatis
Tinctoria Oil; Job's Tears (Coix Lacryma-Jobi) Oil; Kiwi (Actinidia
Chinensis) Seed Oil; Kukui (Aleurites Moluccana) Nut Oil; Lard;
Lauric/Palmitic/Oleic Triglyceride; Linseed (Linum Usitatissiumum) Oil;
Lupin (Lupinus Albus) Oil; Macadamia Ternifolia Nut Oil; Maleated Soybean
Oil; Mango (Mangifera Indica) Seed Oil; Marmot Oil; Meadowfoam
(Linmanthes Alba) Seed Oil; Menhaden Oil; Milk Lipids; Mink Oil; Moringa
Pterygosperma Oil; Mortierella Oil; Musk Rose (Rosa Moschata) Seed Oil;
Neatsfoot Oil; Neem (Melia Azadirachta) Seed Oil; Oat (Avena Sativa)
Kernel Oil; Oleic/Linoleic Triglyceride;
Oleic/Palmitic/Lauric/Myristic/L-inoleic Triglyceride; Oleostearine;
Olive (Olea Europaea) Husk Oil; Olive (Olea Europaea) Oil; Omental
Lipdis; Orange Roughy Oil; Ostrich Oil; Oxidized Corn Oil; Palm (Elaeis
Guineensis) Kernel Oil; Palm (Elaeis Guineensis) Oil; Passionflower
(Passiflora Edulis) Oil; Peach (Prunus Persica) Kernel Oil; Peanut
(Arachis Hypogaea) Oil; Pecan (Carya Illinoensis) Oil; Pengawar Djambi
(Cibotium Barometz) Oil; Phospholipids; Pistachio (Pistacia Vera) Nut
Oil; Placental Lipids; Poppy (Papaver Orientale) Oil; Pumpkin (Cucurbita
Pepo) Seed Oil; Quinoa (Chenopodium Quinoa) Oil; Rapeseed (Brassica
Campestris) Oil; Rice (Oryza Sativa) Bran Oil; Rice (Oryza Sativa) Germ
Oil; Safflower (Carthamus Tinctorius) Oil; Salmon Oil; Sandalwood
(Santalum Album) Seed Oil; Seabuchthorn (Hippophae Rhamnoides) Oil;
Sesame (Sesamum Indicum) Oil; Shark Liver Oil; Shea Butter (Butyrospermum
Parkii); Silk Worm Lipids; Skin Lipids; Soybean (Glycine Soja) Oil;
Soybean Lipid; Sphingolipids; Sunflower (Helianthus Annuus) Seed Oil;
Sweet Almond (Prunus Amygdalus Dulcis) Oil; Sweet Chemy (Prunus Avium)
Pit Oil; Tali Oil; Tallow; Tea Tree (Melaleuca Alternifolia) Oil;
Telphairia Pedata Oil; Tomato (Solanum Lycopersicum) Oil; Triarachidin;
Tribehenin; Tricaprin; Tricaprylin; Trichodesma Zeylanicum Oil;
Trierucin; Triheptanoin; Triheptylundecanoin; Trihydroxymethoxystearin;
Trihydroxystearin; Triisononanoin; Triisopalmitin; Triisostearin;
Trilaurin; Trilinolein; Trilinolenin; Trimyristin; Trioctanoin; Triolein;
Tripalmitin; Tripalmitolein; Triricinolein; Trisebacin; Tristearin;
Triundecanoin; Tuna Oil; Vegetable Oil; Walnut (Juglans Regia) Oil; Wheat
Bran Lipids; and Wheat (Triticum Vulgare) Germ Oil.
[0045]The gel compositions in accordance with embodiments of the invention
may be obtained by the following method. First, one or more compounds to
be gelled are mixed with a gelling agent. Second, the mixture typically
is heated to a temperature in the range of about 70.degree. C. to about
140.degree. C., although other temperatures also are acceptable. The
mixture is agitated until a homogeneous mixture is obtained. The
homogeneous mixture is then cooled to room temperature. A gel composition
is thus obtained. It is noted that the compound to be gelled need not be
mixed with a gelling agent before heating. Instead, the compound may be
heated to a desired temperature first, and then the gelling agent is
added to the compound.
[0046]The following examples are given to illustrate embodiments of the
invention. They are merely exemplary and are not intended to limit the
scope of the invention otherwise described herein. All numerical values
disclosed herein are approximate numbers. In some examples, an
antioxidant was added in an amount of about 0.02%. Any antioxidants can
be used. One suitable antioxidant is 2,6-di-tert-butyl-4-methylphenol
("BHT").
Example 1
[0047]A sample of gelled isopropyl myristate (available under the trade
name of Estol 1512, Lexol IPM, etc.) was prepared (85.28 wt. % isopropyl
myristate+14.30 wt. % Kraton G 1702+0.40 wt. % Kraton G 1650). The
finished gel exhibited excellent clarity and had a Brookfield viscosity
(5 rpm, spindle T-C) of 157,000 CPS at 25.degree. C.
Example 2
[0048]A sample of gelled octyl methoxycinnamate (trade names: Parsol MCX,
Escalol 557, Neo Heliopan AV) was prepared (87.58 wt. % octyl
methoxycinnamate+12.00 wt. % Kraton G 1701+0.40 wt. % Kraton G 1650). The
finished gel was clear and stable through several freeze/thaw cycles.
Example 3
[0049]A sample of zinc oxide suspension in gelled octyl methoxycinnamate
was prepared by using 50.00 wt. % of zinc oxide and 50.00 wt. % of the
gelled octyl methoxycinnamate illustrated in Example 2. The finished
suspension had good consistency and maintained stability without
separation for 15 days under thermal stress.
Example 4
[0050]A sample of gelled propylene glycol dicaprylate/caprate (trade name:
Estol 1526) was prepared (87.58 wt. % propylene glycol
dicaprylate/caprate+12.00 wt. % Kraton G 1780+0.40 wt. % Kraton G 1650).
The gel was clear at ambient temperature.
Example 5
[0051]A sample of gelled isostearyl neopentanoate (trade name: Dermol 185)
was prepared (85.58 wt. % isostearyl neopentanoate+14.00 wt. % Septon
1001+0.40 wt. % Kraton G 1650). The finished gel was clear and stable
without syneresis.
Example 6
[0052]Jojoba oil gel was prepared (91.28% jojoba oil+0.4% Kraton G
1650+8.3% Kraton G 1702). The gel was clear and viscous.
Example 7
[0053]Eicosyl erucate (trade name: Erucical EG-20) gel was prepared
(91.28% Erucical EG-20+0.4% Kraton G 1650+8.3% Kraton G 1702). The gel
was clear and stable without syneresis.
[0054]In addition to the above examples of gel compositions, various other
gel compositions also were obtained. Tables 3-6 summarize the gel
compositions obtained in accordance with embodiments of the invention.
TABLE-US-00003
TABLE 3
Ester Kraton .RTM. Kraton .RTM. Kraton .RTM. Kraton .RTM. Septon .RTM.
Kraton .RTM. Kraton .RTM.
INCI Name (wt. %) G1650 G1702 G1701 G1780 1001 FG1901 G1652
Isopropyl Myristate 85.28 0.4 14.3
90.58 0.4 9.00
Isopropyl Palmitate 87.58 0.4 12.00
89.58 0.4 10.00
85.58 0.4 14.00
C12-15 Alkyl 83.58 0.4 16.00
Benzoate 87.58 0.4 12.00
87.98 12.00
89.58 0.4 10.00
89.98 10.00
Octyl 89.58 0.40 10.00
Methoxycinnamate 83.58 0.40 16.00
85.58 0.40 14.00
81.58 0.40 12.00
83.58 0.40 16.00
87.58 0.40 12.00
85.58 0.40 14.00
89.58 0.40 10.00
Octyl Dodecyl 81.98 12.00
Neopentanoate
Isostearyl 85.58 0.40 14.00
Neopentanoate 81.98 12.00
Tridecyl 87.58 0.40 12.00
Salicylate 91.28 0.4 8.30
Octyl Dodecanol 89.58 0.4 10.00
88.89 6.67 4.44
90.00 5.48 4.5
90.00 5.45 4.5
87.58 0.4 12.00
89.58 0.4 10.00
Propylene Glycol 87.58 0.4 12.00
Dicaprylate/caprate
Jojoba Oil 91.28 0.4 8.30
TABLE-US-00004
TABLE 4
Ester Polymer Antioxidant
Polymer Type (%) (%) (%)
1,2-benzene- Vector .RTM. 6030 91.98 8 0.02
dicarboxylic acid, di- Vector .RTM. 8550 91.98 8 0.02
C.sub.8-10 br alkyl ester Vector .RTM. 2518P 91.98 8 0.02
Solprene .RTM. S200 91.98 8 0.02
1,2 benzene- Vector .RTM. 6030 91.98 8 0.02
dicarboxylic acid, di-
undecyl ester
TABLE-US-00005
TABLE 5
Oil Polymer Antioxidant
Oil Type Polymer Type (%) (%) (%)
Sunflower Seed Oil Kraton .RTM. D1102 91.9 8 0.10
Kraton .RTM. D1133 91.9 8 0.10
Kraton .RTM. D1101 91.9 8 0.10
Vector .RTM. 6030 91.9 8 0.10
Corn Oil Vector .RTM. 6030 91.9 8 0.10
Sesame Oil Vector .RTM. 6030 91.9 8 0.10
Soybean Oil Kraton .RTM. D1101 89.90 10 0.10
Kraton .RTM. D1102 85.98 14 0.02
Vector .RTM. 6030 91.90 8 0.10
Linseed Oil Kraton .RTM. D1102 85.90 14 0.10
Vector .RTM. 6030 91.90 8 0.10
TABLE-US-00006
TABLE 6
Isopropyl Alkyl
Oil Palmitate Galactomannan Antioxidant
Oil Type (%) (%) (%) (%)
Sunflower 46.99 46.99 6.0 0.02
Seed 44.99 44.99 10.0 0.02
Oil 75.18 18.8 6.0 0.02
71.95 18.0 10.0 0.05
Corn Oil 75.1 18.8 6.0 0.10
71.9 18.0 10.0 0.10
Soybean Oil 75.1 18.8 6.0 0.10
71.9 18.0 10.0 0.10
Sesame Oil 68.9 25.0 6.0 0.10
65.31 25.5 9.1 0.09
Olive Oil 68.9 25.0 6.0 0.10
65.9 25.0 9.0 0.10
Example 8
[0055]An in-vivo test was conducted to evaluate the waterproof efficacy of
a sunscreen lotion based on a gelled ester composition. The in-vivo test
procedure was conducted in accordance with the FDA monographs for
sunscreen testing published in Federal Register, Vol. 43, No. 166, Aug.
25, 1978. Briefly, a finished sunscreen lotion was applied to a skin
surface which was subsequently submerged in water. Before water
immersion, the sun protection factor ("SPF") was measured. After eighty
minutes of water immersion, the SPF value was measured again. The
percentage of the remaining SPF is indicative of the waterproof efficacy
of the sunscreen lotion.
[0056]In this example, two sunscreen lotions were prepared according to
Table 7. Both lotions contained approximately the same amount of a
sunscreen active ingredient, i.e., octyl methoxycinnamate ("OMC").
Sunscreen Lotion A included gelled OMC, whereas Sunscreen Lotion B
included neat OMC. Both sunscreen lotions contained approximately the
same amounts of other ingredients as indicated in Table 7.
TABLE-US-00007
TABLE 7
Sunscreen Sunscreen
Ingredient Lotion A Lotion B
De-ionized water 45.74 45.74
Tetra sodium EDTA 0.10 0.10
Proplyene Glycol 2.50 2.50
Carbopol 940 (2% solution) 25.00 25.00
DEA-cetyl phosphate 1.00 1.00
Cetearyl Alcohol and Ceteareth 20 1.50 1.50
Mineral oil -- 1.26
Octyl Methoxycinnamate -- 7.50
Octyl Methoxycinnamate + Hydrogenated 8.76 --
Ethylene/propylene/styrene copolymers +
Hydrogenated Butylene/ethylene/styrene
copolymers
Dimethicone 2.00 2.00
Diisodecyl Adipate 7.00 7.00
C.sub.12-15 Alkyl Benzoate 5.00 5.00
Triethanol amine 0.40 0.40
Diazolidinyl urea + propylene glycol + 1.00 1.00
methylparaben + propylparaben
Remaining SPF after 80 min. water immersion 84% 69%
[0057]After eighty minutes of water immersion, the remaining SPF for
Sunscreen Lotion A was about 84% of the pre-immersion SPF. As to
Sunscreen Lotion B, the remaining SPF was about 69% of its pre-immersion
SPF. Therefore, the test result indicates that inclusion of a gelled
sunscreen active ingredient increases the waterproof efficacy of the
sunscreen lotion.
Example 9
[0058]This example shows that gelled esters are comparable to petrolatum
as an occlusive agent. An in-vivo skin barrier test was utilized to
evaluate a gelled ester's ability to enhance the barrier function of the
stratum corneum of human skin. Three different ester gels were formulated
and evaluated in this test. Their respective formulations are listed in
Table 8.
TABLE-US-00008
TABLE 8
Kraton Kraton Kraton Anti-
Ester G1701 G1650 G1701 oxidant
Sample Intermediate (wt. %) (wt. %) (wt. %) (wt. %) (%)
Gel No. 1 C.sub.12-15 Alkyl 85.58 14.00 0.40 -- 0.02
Benzoate
Gel No. 2 Isopropyl 87.58 12.00 0.40 -- 0.02
Palmitate
Gel No. 3 Octyl 85.58 -- 0.40 14.00 0.02
Methoxy-
cinnamate
[0059]An independent laboratory conducted Trans-Epidermal Water Loss
("TEWL") testing using the above gel compositions. Thirteen subjects were
employed. TEWL measurements were taken on each subject at baseline and at
1, 2, and 3 hours after the application of a test material. A
Servomed.RTM. Evaporimeter was used to measure the effectiveness of a
topically applied test material. The evaporimeter samples relative
humidity at two points above the skin surface which allowed the rate of
water loss to be calculated from the measured humidity gradient.
Petrolatum also was included in the measurements. The data obtained from
the TEWL measurements are presented in Table
TABLE-US-00009
TABLE 9
Test Hour 1 Hour 2 Hour 3
Material Baseline mean .DELTA. % mean .DELTA. % mean .DELTA. %
Gel No. 1 7.07 5.47 22.6% 5.44 23.1% 5.26 25.6%
Gel No. 2 6.66 5.37 19.4% 5.14 22.8% 4.72 29.1%
Gel No. 3 6.76 5.79 14.3% 5.49 18.8% 5.25 22.3%
Petrolatum 6.64 4.64 30.1% 4.28 35.5% 4.13 37.8%
Note
.DELTA. % = (Baseline - Mean) * 100/Baseline
[0060]The data indicate that all three gelled esters are effective in
retaining moisture in the skin. Consequently, gelled esters can be used
as an occlusive agent in various health and beauty aid compositions.
Example 10
[0061]This example shows that a gelled composition has significantly
higher loading capacity as a suspension system. To compare the loading
capacity of gelled soybean oil with that of neat soybean oil, two
experiments were conducted: about 3 grams coated TiO..sub.2 powder were
suspended in about 97 grams of neat soybean oil; and about 50 grams of
the same coated TiO..sub.2 powder were suspended in 50 grams of gelled
soybean oil. No dispersant agent was used in either suspension system.
The gelled soybean oil was made from the following formulation: about
85.9 wt. % of commercially available soybean oil and about 14 wt. % of
Kraton.RTM. D1102. It was observed that only about 2 wt. % of TiO..sub.2
remained suspended in the neat soybean oil. In contrast, about 50 wt. %
of TiO..sub.2 was suspended in the gelled soybean oil. It is surprising
that the loading capacity of gelled soybean oil is about 25 times more
than that of neat soybean oil. The increased loading capacity by using a
gelled naturally-occurring fat or oil should result in improved
performance and cost savings.
[0062]Accordingly, the gel compositions in accordance with embodiments of
the invention have numerous cosmetic and industrial applications. The gel
compositions may be used alone or in combination with one or more
additional ingredients. For example, the gel compositions are suitable as
lubricants, suspending agents, emulsion stabilizers, thickening agents,
personal care ingredients, air freshener components, pesticide and
insecticide components, ingredients for candle and ornamental products,
pharmaceutical carriers and carrier ingredients, ointment base
ingredients, sporting goods, and vehicles for carrying other materials.
Since esters are generally considered as biodegradable materials, this
allows gelled esters to find application in products where minimal
pollution is desired. Examples include fishing line lubricant, solder
flux, agricultural dust reduction and lubrication, textile coating,
protective coating for transporting fragile or environmentally-sensitive
materials, and biodegradable oils and greases.
[0063]It has been discovered that the gel compositions in accordance with
embodiments of the invention keep solids and/or liquids substantially
uniformly suspended and evenly dispersed over a substantial period of
time. The suspended liquids and/or solids may be present in the gel in
amounts of up to about 95 weight percent. Suitable solids and/or liquids
that can be suspended in the gel include any solid or non-hydrocarbon oil
liquid which will disperse into the gel and remain substantially
suspended or evenly dispersed therein.
[0064]Examples of suitable solids include, but are not limited to, zinc
oxide, coated zinc oxide, surface-treated zinc oxide, titanium dioxide,
coated titanium dioxide, surface-treated titanium dioxide, phosphorescent
substances, fluorescent materials, molybdenum oxide, zinc sulfide,
copper-dopped zinc sulfide, graphite, explosive materials, pesticides,
herbicides, fungicides, insecticides, plasticizers, air sensitive
chemicals, moisture sensitive chemicals, boron nitride, iron oxides,
talc, mica, plastics, polymers, silica, silicon dioxide, aluminum oxide,
inorganic materials, organometallic materials, metal particles, medical
materials (such as antibacterials, antibiotics, antimicrobials,
antifungals, and anesthetics), glass, clays, gums, capsules containing an
active ingredient, starch, modified starch, other encapsulated materials,
and mixtures thereof.
[0065]Examples of oil insoluble liquids which can be suspended in the gels
include, but are not limited to, water, water containing one or more
water soluble materials, glycerin, propylene glycol, butylene glycol,
alcohols, acids, surfactants, emulsifiers, polyglycerols, ethers, polar
esters, fluorinated compounds, perfluoropolyethers, silicones,
silicon-containing compounds, and the mixtures thereof.
[0066]Pending U.S. patent application Ser. No. 09/007,838, entitled
"Hydrocarbon Gels as Suspending and the Dispersing Agents and Products,"
filed Jan. 15, 1998, discloses methods of making a suspension system
based on gelled hydrocarbons. The disclosed methods can be utilized in
embodiments of the invention to make suspension systems which are based
on gelled esters, gelled alcohols, gelled naturally-occurring fats and
oils, or gelled ethers. The disclosure of the above-referenced patent
application is incorporated by reference in its entirety herein.
[0067]The gel compositions in accordance with embodiments of the invention
also have a wide spectrum of cosmetic applications when the gel
compositions include an effective amount of one or more cosmetic and
health and beauty aid ingredients. By "effective amount," it is meant
that a sufficient amount of the ingredient is present to be effective for
the indicated purpose in the composition. An effective amount may range
from about 0.001 to about 80 wt. %. By "cosmetic and health and beauty
aid ingredients," it is meant any material which can be applied topically
to the human skin or any part thereof for cleansing, beautifying,
promoting attractiveness, and protecting or altering the appearance of
the skin without altering or interfering with the physiological
competence of the human skin or body. Included within this definition are
creams, lotions, emollients, fragrance oils, moisturizers, humectants,
cosmetic oils, and so on. The gel compositions in accordance with
embodiments of the invention also may contain skin care preservatives,
diluents, surfactants, anti-wrinkle agents, and the like.
[0068]Furthermore, the gel compositions may be utilized to manufacture
various over-the-counter ("OTC") products. An OTC product may be made
entirely from a gel composition; or only a component of the OTC is made
from the gel composition. Examples of OTC products include, but are not
limited to, antiperspirants, lip balms, and sunscreen (e.g., natural
sunblocks, such as submicron particles of metal oxides or synthetic
sunblock agents, such as octyl methoxycinnamate and benzophenone-3).
[0069]As mentioned above, the gel composition in accordance with
embodiments of the invention may be utilized as carrier vehicles for
topical administration of various cosmetic and health and beauty aid
materials to the skin. Thus, such materials can be incorporated into the
gel which are applied to the skin to be absorbed, to form a film on the
skin, to provide a cooling sensation, to treat dry skin or oily skin, to
work a material into the skin, to alter the overall texture of the skin,
or to change color. All of these effects are sought to be achieved by
various health and beauty aid products. Methods for making such skin care
products are known in the art. For example, U.S. Pat. No. 5,558,872
discloses a clear gelled mineral oil based skin protectant. Similar skin
protectants may be made by substituting the mineral oil gel by the gel
compositions in accordance with embodiments of the invention. The
disclosure of U.S. Pat. No. 5,558,872 is incorporated by reference in its
entirety herein.
[0070]It is noted that preferred uses of the gel compositions in
accordance with embodiments of the invention include formation of
thickened liquids, soft gels and semi-solid gels. Gels are particularly
useful in waterproofing sunscreen compositions, makeup, mascara, etc.
They also are useful in petrolatum-based products, such as petroleum
jelly, makeup foundation, and night creams. They also can be used as
substitutes for water-soluble polymers in products, such as lip
rouge-cream, eyeliner liquid, and the like. They also may be used as a
gelling agent in facial oil.
[0071]Semi-solid or solid gels have applications as toiletry sticks, such
as a stick insect repellant or a matrix for clear or opaque stick
products, which include deodorants, antiperspirants, lipsticks,
analgesics, blushers, solid lotions and solid absorbable flexible gels.
Methods for making such cosmetic sticks are known. For example, U.S. Pat.
No. 5,756,082 discloses a cosmetic stick composition based on a
hydrocarbon oil gel. The disclosed hydrocarbon oil gels may be
substituted by the gel compositions in accordance with embodiments of the
invention to make cosmetic stick compositions. The disclosure of U.S.
Pat. No. 5,756,082 is incorporated by reference in its entirety herein.
[0072]As demonstrated above, the gel compositions in accordance with
embodiments of the invention have a wide range of industrial and cosmetic
applications. When so used, the gel compositions may exhibit one or more
of the following properties or advantages: transparency; compatibility
with active ingredients; reduction or elimination of syneresis; ability
to act as a vehicle to provide a stable suspension of an ingredient;
moisturization; enhancement of wash-off resistance; provision of improved
SPF when formulated into sunscreen products; reduction in absorption and
irritation; elimination or minimization of whitening effect; ability to
act as a cosmetic base; controlled release of volatile ingredients; and
formulation with less emulsifiers. Other properties and advantages are
apparent to a person of ordinary skill in the art.
[0073]While the invention has been described with respect to a limited
number of embodiments, modifications and variations therefrom exist. For
example, although suitable esters, ethers, alcohols, and
naturally-occurring fats and oils have been described with some depth,
other compounds also can be used. Additional suitable esters may include
alkoxylated fatty acids, glyceryl ethers, and sorbitan derivatives.
Additional suitable alcohols may include alkanolamides, alkanolamines,
fatty alcohols, polyols, phenols, and sterols. Additional suitable ethers
include heterocyclic ethers, e.g., tocopherol, alkoxylated alcohols,
alkoxylated amides, alkoxylated amines, alkoxylated carboxylic acids,
polymeric ethers, and glyceryl ethers. Similarly, naturally-occurring
fats and oils may include so-called "essential oils," which are volatile
organic constituents of plants normally obtained by distillation. In
addition to the above-described compounds, aldehydes and ketones also may
be formed into gel compositions in accordance with embodiments of the
invention. The appended claims are intended to encompass all such
modifications and the variations as falling within the scope of the
invention.
* * * * *