Searching:
Search by keyword, patent number, inventor, assignee, city or state:
| Patent # | Description |
|---|---|
| US-5,061,805 |
Process for preparing 2-methyl-3,5-dialkylpyridines by dealkylation with
sulfur A process for dealkylating the 2-position on a trisubstituted pyridine derivative having the formula ##STR1## where R.sub.1 is a straight chain alkyl group... |
| US-5,061,804 |
3-pyrrolidinylthio-1-azabicyclo-(3.2.0)hept-2-ene-2-carboxylic acid
derivatives and processes for the... 3-thio pyrrolidines are intermediates for carbapenams. |
| US-5,061,803 |
Process for making 17-beta alkanoyl 3-oxo-4-aza-5-.alpha.-androst-1-enes Disclosed is a new process for making 17-beta branched alkanoyl-3-oxo-4-aza-5-.alpha.-androst-1-enes, agents for treating benign prostatic hypertrophy (BPH), by... |
| US-5,061,802 |
17.beta.-aminobenzoyl-4-aza-5.alpha.-androst-1-en-3-ones as benign
prostatic hypertrophy agents New 17.beta.-aminobenzoyl-4-aza-5.alpha.-androst-1-en-3-ones as benign prostatic hypertrophy agents of the formula: ##STR1## wherein R is selected from... |
| US-5,061,801 |
Intermediate for making 3-oxo-4-aza-androst-1-ene 17.beta.-ketones Described is a new intermediate and new process for preparing 3-oxo-4-aza-androst-1-ene 17.beta.-ketones. The process involves converting the corresponding... |
| US-5,061,800 |
Camptothecin derivatives New campotothecin derivatives and a process for preparing same are disclosed, which are represented by the general formula: ##STR1## wherein R.sup.1... |
| US-5,061,799 |
Preparation of tetraazaindenes A multi-step process for the preparation of tetraazaindenes provides new, intermediate compounds and methods for their formation. A first method or step (1) of... |
| US-5,061,798 |
Benzyl pyridyl and pyridazinyl compounds This invention relates to chemical compounds which have selective thyromimetic activity. A compound of this invention is ... |
| US-5,061,797 |
1-methyl-3,5,7-triaza-1-azoniatricyclodecane compounds Compounds of the formula ##STR1## wherein X is an anion selected from the group consisting of phosphate, borate and molybdate groups, and a method for... |
| US-5,061,796 |
Azamethine compounds This invention provides azamethine compounds represented by the formula (I): ##STR1## (wherein X represents ##STR2## Y represents C.dbd.O,... |
| US-5,061,795 |
Hexa-cyclic compound A novel hexa-cyclic compound, a derivative of camptothecin, of the general formura: ##STR1## The compound is prepared from an aminoketone compound and a ... |
| US-5,061,794 |
Cephalosporin derivatives, and antibacterial agents A compound having the formula: ##STR1## wherein R is a straight chain or branched chain lower alkyl, cyclic lower alkyl, lower alkenyl (except for... |
| US-5,061,793 |
2-deoxy-2',2'-difluoro-inosine and 5'O-derivatives 2'-deoxy-2',2'-difluoro-inosine and 5'-O alkyl derivatives are disclosed as inhibitors of neoplasms. |
| US-5,061,792 |
Preparation of chitosan salts in aqueous alcoholic media Chitosan is converted to dry, free-flowing, water-soluble chitosan salts by heterogeneous reaction between particulate chitosan suspended in about 5 to about 50... |
| US-5,061,791 |
4-bromo-4'-demethylepipodophyllotoxin derivatives Preparation of 4-bromo-4'-demethylepipodophyllotoxin by reacting podophyllotoxin with hydrogen bromide at about -20.degree. C. New antitumor compounds of the... |
| US-5,061,790 |
Oxidative denaturation of protein analytes A method for conferring or increasing the antigenicity of a disulfide-crosslinked protein by treating the protein with an oxidizing agent, such as periodate,... |
| US-5,061,789 |
Method of isolating blood-clotting factor IX A method of isolating blood-clotting Factor IX. A solution containing the Factor IX is adsorbed onto an adsorbent carrying .alpha.-hydroxylamine groups, and the... |
| US-5,061,788 |
Recombinant malarial polypeptides The invention provides polypeptides which correspond in at least one specific epitope with Plasmodium falciparum merozoite antigen having a molecular weight of... |
| US-5,061,787 |
Novel spergualin-related compounds and compositions The present invention relates to novel spergualin-related compounds represented by the general formula [I]: ##STR1## wherein X is --(CH.sub.2).sub.1.about.5... |
| US-5,061,786 |
Biologically active polypeptides based on transforming growth factor-.beta. A polypeptide is provided that excludes (a) a full-length mature TGF-.beta. molecule or precursor TGF-.beta. molecule or deletion variants of mature or precursor... |
| US-5,061,785 |
Polymerization of carbon monoxide/olefin with tertiary aliphatic
monophosphine catalyst An improved process for the production of a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon employs a novel... |
| US-5,061,784 |
Polymers prepared from 4,4'-bis(3,4-dicarboxyphenyl)
hexafluoroisopropyl) diphenyl dianhydride Polyimides and polyamide-acids having improved solubility and processing characteristics and high glass transition temperatures are provided, having incorporated... |
| US-5,061,783 |
Processing for maximizing the level of crystallinity in linear aromatic
polyimides The process of the present invention includes first treating a polyamide-acid (such as LARC-TPI polyamide-acid) in an amide-containing solvent (such as... |
| US-5,061,782 |
Unsaturated polymerization of CO and bicyclic carboxylic acid compound
bidentate ligand of nitrogen Linear alternating copolymers of carbon monoxide and an unsaturated bicyclic carboxylic acid compound are produced in the presence of a catalyst composition... |
| US-5,061,781 |
Polyimides from diaminobenzotrifluorides Polymides are made by imidization of the product of reaction of dianhydrides with diaminobenzotrifluoride and bis(trifluoromethyl) oxydianilines. In preferred... |
| US-5,061,780 |
Poly(ether-bis-imide-spiro dilactam) polymer Novel poly(etherimide) polymers and a method for the production thereof, which polymers are characterized by moieties of a dioxyaryl-substituted 1,6-diaza [4,4]... |
| US-5,061,779 |
Liquid epoxy polymer composition and use thereof based on cycloaliphatic
amine cured... A liquid epoxy composition containing a diglycidyl ether of a dihydric phenol and/or a diglycidyl ether of a tetrabrominated dihydric phenol, an epoxy with a... |
| US-5,061,778 |
Resin composition for composite-type vibration-damping material,
composite-type vibration-damping material... A resin composition for a composite-type vibration-damping material which comprises a saturated copolyester having a weight average molecular weight of at least... |
| US-5,061,777 |
Thromboresistant polyetherurethane compounds and process for its
production A thromboresistant segmented polyetherurethane compound wherein the polyether segment consists of 99 to 1% by weight of (a) a polytetramethylene ether segment... |
| US-5,061,776 |
Modified polyurethane flow-under thermal transfer adhesive A thermal transfer adhesive composition which is applied after electronic components have been installed on a printed wiring board, comprising: (a) 30 to 70 weight... |
| US-5,061,775 |
Heat curable mixtures and their use for the formation of coatings on
heat resistant substrates The present invention relates to a coating composition which may be cured at elevated temperature and is based on A) a polyisocyanate component containing at least... |
| US-5,061,774 |
Imide-containing polysiloxanes and a process for preparing them A polysiloxane containing terminal imide groups and process for the preparation thereof by a Michael addition reaction comprising reacting a bismaleimide with a... |
| US-5,061,773 |
Aminoalkyl-substituted organopolysiloxane thiourea derivatives and
methods of preparation and use thereof Aminoalkyl-substituted organopolysiloxane thioureas are disclosed which consist of the units ##STR1## whereby R.sup.1 stands for a group ##STR2## ... |
| US-5,061,772 |
Process for making comb-shaped copolymers of a macromolecular monomer of
polylactone with terminal acryloyl... A comb-shaped polymer ("comb" for brevity) of a polymerizable olefinically unsaturated monomer, preferably a vinyl, styryl, or acryloyl monomer, and a... |
| US-5,061,771 |
Ring-opened polymer from norbornene type of polycyclic monomer and
process for producing the polymer (1) A solvent-soluble ring-opened polymer constituted of 100-50% by weight of a norbornene derivative of monomer (A) represented by the formula ##STR1## ... |
| US-5,061,770 |
Aromatic dicarboxylic acid diallyl ester derivative, prepolymer derived
from the derivative and curable resin... A diallyl aromatic dicarboxylate derivative of the formula ##STR1## wherein Y is hydrogen atom or perfluoroalkenyl group having 6 to 14 carbon atoms, is a... |
| US-5,061,769 |
Fluoropolymers and fluoropolymer coatings Copolymer compositions derived from (a) perfluoralkylalkyl acrylate or methacrylate, (b) acrylic, methacrylic or itaconic acid, and (c) a hydroxyl-containing... |
| US-5,061,768 |
Vinylidene cyanide copolymer Disclosed is a vinylidene cyanide copolymer obtained by copolymerization of vinylidene cyanide and two kind of vinyl compounds. By formation of a ternary copolymer, a... |
| US-5,061,767 |
Hydrophilic-hydrophobic polymer composites and membranes A polymer composite, a method of making a polymer composite and a polymer composite membrane. The polymer composite comprises a uniform dispersion of hydrophobic... |
| US-5,061,766 |
Method of producing polymer particles having narrow particle size
distribution by the use of a polymeric... A method of producing polymer particles having a particle size distribution of .+-.25% with respect to each average particle size in an amount of 95 wt. % or... |
| US-5,061,765 |
Process for the synthesis of a high vinyl isoprene-butadiene copolymer Isoprene-butadiene copolymers having high vinyl contents can be synthesized in organic solvents to high yields after short polymerization times by utilizing the... |
| US-5,061,764 |
Moldable and/or extrudable poly(enamine ketone-co-alkylene ether) block
compolymers A moldable and/or extrudable poly(enamine ketone-co-alkylene ether) block copolymer is disclosed which has the formula shown below: ##STR1## wherein R' is H... |
| US-5,061,763 |
Stain resistant treatment for polyamide fibers A stain resistant composition for fibers having polyamide linkages prepared by polymerizing an .alpha.-substituted acrylic acid or ester in the presence of a... |
| US-5,061,762 |
Modified poly(organo-organosiloxanes) with comb or block structures and
a process for their preparation The invention relates to modified poly(organo-organosiloxanes) with comb and/or block structures, which consist of a substantially linear diorganopolysiloxane... |
| US-5,061,761 |
Polyvinyl ester macromonomer and its uses Provided are polyvinyl ester macromonomers (A) having excellent polymerizability and highly controlled composition, structure and distribution of polymerization... |
| US-5,061,760 |
Vinylidene cyanide alternating copolymers exhibiting nonlinear optical
and piezoelectric properties In one embodiment this invention provides vinylidene cyanide copolymers with alternating monomeric units as illustrated by the following structure: ... |
| US-5,061,759 |
Processing-coadjuvating additives for rubbers vulcanizable by means of
peroxides The use of liquid neutral perfluoropolyethers in amounts below 1 part by weight per 100 parts by weight of elastomer, and of derivatives thereof having... |
| US-5,061,758 |
Unsaturated, elastomeric, asymmetrically, coupled block copolymers, a
dual batch process for its manufacture... An unsaturated elastomeric, asymmetrically coupled block copolymer of the formula: (A).sub.n -X-(B).sub.m, wherein block A is a block of polybutadiene having a... |
| US-5,061,757 |
High impact strength polyamide blends and method for preparation thereof High impact strength resin compositions and methods of preparations thereof. The compositions contain at least 60% polyamide together with an elastomer and a... |
| US-5,061,756 |
Process for the preparation of polyurethane powders The present invention is directed to an improved process for the direct preparation of polyurethane powders in a finely divided form by the reaction of... |
Copyright 2008−2012 Patents.com
