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| Patent # | Description |
|---|---|
| US-5,527,967 |
Process for preparing tertiary diarylalkylphosphines The invention relates to a process for preparing phosphines ##STR1## where, for example R.sup.1 is (C.sub.1 -C.sub.10)alkyl, (C.sub.3 -C.sub.10)cycloalkyl,... |
| US-5,527,966 |
Preparation of triphenylphosphine Triphenylphosphine (TPP) is prepared by reacting triphenylphosphine dichloride (TPPCl.sub.2) with magnesium, aluminum and/or iron in the presence of an inert... |
| US-5,527,964 |
Acetaldehyde derivatives, their preparation process and their use Azines of formula (I): ##STR1## in which R and R' either are identical and represent an alkyl radical containing 1 to 4 carbon atoms or an alkenyl radical... |
| US-5,527,963 |
Production of N-vinylformamide An improved process for producing N-vinylformamide including the steps of evaporating N-(.alpha.-substituted-ethyl)formamide or ethylidenebisformamide under... |
| US-5,527,962 |
Amphiphilic fluorine derivatives with telomeric structures New fluorinated derivatives useful as surfactants or in the transport of drug or markers, or in drug targeting, and preparations containing the derivatives, for... |
| US-5,527,961 |
Process for reducing the ammonia content of a gaseous effluent from urea
production plants A process for neutralizing the ammonia present in the molten urea originating from the concentration section of a plant for its production, comprising adding to... |
| US-5,527,960 |
Fluorinating reagents and method of fluorination Fluorinating reagents expressed in a general formula; ##STR1## (In the general formula, R is an alkyl group having 1 to 5 carbons or a dialkylamino group in... |
| US-5,527,959 |
Crystalline composition of lysine and succinic acid or alkali metal salt
thereof A crystalline salt of lysine hydrochloride, succinic acid or alkali metal salt, wherein the molar ratio of lysine to succinic ion calculated as succinic acid is... |
| US-5,527,958 |
Process of the isolation of L-leucine and L-isoleucine from aqueous
solutions A process for the isolation of L-leucine and L-isoleucine from an aqueous solution containing these amino acids and their separation from each other by... |
| US-5,527,957 |
Process for the production of terephthalic acid A terephthalic acid slurry in acetic acid is produced by oxidizing p-xylene in acetic acid, removing water by evaporation of a stream of water and acetic acid,... |
| US-5,527,956 |
Process for the oxidation of aromatic methyl groups Fluro-substituted aromatic carboxylic acids, and particular 2- and 4-fluorobenzoic acid can be made from the corresponding fluoro-methyl compound such as... |
| US-5,527,955 |
Method of treating depression and tri-substituted amines therefor The invention concerns a method for treating depression or senile dementia using a compound which acts selectively as an agonist of gamma aminobutyric acid... |
| US-5,527,954 |
Process for the production of 2-fluoroisobutyric acid or its ester Provided is a process for the production of 2-fluoroisobutyric acid or its ester, which comprises reacting 2-hydroxyisobutyric acid or its ester with thionyl... |
| US-5,527,953 |
Process for the manufacture of N-phosphonomethyliminodiacetic acid A process for the manufacture of N-phosphonomethyliminodiacetic acid which comprises: 1) reacting iminodiacetic acid with phosphorous acid and a source of... |
| US-5,527,952 |
Process for producing aldehyde derivatives The present invention provides a novel process for producing 4-acyloxy-2-methyl-2-buten-1-al readily in high yield from a readily available inexpensive... |
| US-5,527,951 |
Polymerization catalyst and process Tert-alkylmethoxy-substituted vanadium compounds, several of which are novel, are useful as catalysts for the polymerization of ethylene or the copolymerization... |
| US-5,527,950 |
Process for the preparation of 5-formylvalerate The invention relates to a process for the preparation of a 5-formylvalerate ester by hydroformylating a mixture of pentenoate esters in the presence of a... |
| US-5,527,949 |
Method for making an amine and an alkyl ester and method for reducing
hydrogen cyanide levels in alkyl ester A method for making an amine includes the steps of heating a reaction mixture including a nitrile, an acid, water and a substrate compound capable of generating... |
| US-5,527,948 |
Naphthalene derivative Naphthalene derivatives of the formula: ##STR1## wherein R.sup.1, represents a hydrogen atom, a lower alkyl group or an acyl group; R.sup.2 independently... |
| US-5,527,947 |
Process for preparation of cinnamate sunscreen agents This invention relates to an improved process for the manufacture of cinnamate compounds, particularly sunscreen agents, useful in cosmetic skin and hair care... |
| US-5,527,946 |
Preparation of aliphatic alpha, omega-aminonitriles Aliphatic alpha, omega-aminonitriles are prepared by partial hydrogenation of aliphatic alpha, omega-dinitriles at elevated temperatures and superatmospheric... |
| US-5,527,945 |
Diphenylheteroalkyl derivatives, the preparation thereof and drugs and
cosmetics prepared therefrom Diphenylheteroalkyl derivatives of the formula I ##STR1## where A and R.sup.1 -R.sup.6 have the meanings specified in the description, and the preparation... |
| US-5,527,944 |
.beta.-hydroxyoxime ethers and solutions or dispersions crosslinkable at
room temperature with... A compound of the formula ##STR1## where R.sup.1 and R.sup.2, independently of one another, are each C.sub.1 -C.sub.10 -alkyl, C.sub.1 -C.sub.10 -alkoxy,... |
| US-5,527,943 |
Method for removing acid and saline contaminants from a gaseous stream
leaving a dimethylcarbonate synthesis... A method is described enabling HCl and possible entrained CuCl particulate to be removed from a gas-vapor stream leaving a dimethylcarbonate synthesis reactor.... |
| US-5,527,942 |
Process for the production of aryl carbonates Carbonates with aromatic ester groups can be produced by reaction of aromatic monohydroxy compounds with phosgene or with chloroformic acid esters of aromatic... |
| US-5,527,941 |
Composition comprising a novel phosphatized alicyclic compound Disclosed is a composition which comprises a phosphatized alicyclic compound represented by the formula (I), (II), (III), (VII) or (IX) shown in the... |
| US-5,527,940 |
Methanediphosphonate derivative, its manufacturing process and its
pharmaceutical applications The present invention relates to a methanediphosphonate derivative, its manufacturing process and pharmaceutical applications, that is represented with the... |
| US-5,527,939 |
Amine catalyzed reaction of alkyl mercaptans with thiophosphoryl chloride Disclosed herein is an improved process for preparing a phosphorodihalodithioate comprising reacting a mercaptan with a thiophorphoryl halide in the presence of... |
| US-5,527,938 |
(2-arylpropyl)silanes and preparation methods thereof The present invention relates to (2-arylpropyl)silanes represented by the formula (III) and a process for the preparation of the formula (III) by the... |
| US-5,527,937 |
Process for preparing hydrogenalkoxysilanes Hydrogenalkoxysilanes are prepared by direct reaction of finely divided metallic silicon with alcohols in the presence of copper-containing catalysts in a... |
| US-5,527,936 |
Hydrosilylation of unsaturated compounds A method for hydrosilylating an olefinically unsaturated compound comprising contacting the unsaturated compound with a source of silicon in the presence of an... |
| US-5,527,935 |
Organopolysiloxanes having bifunctional terminal siloxane units The present invention relates to the organopolysiloxanes having the formula where R is optionally substituted C.sub.1 - to C.sub.18 -hydrocarbon radicals, R.sup.1 is an... |
| US-5,527,934 |
Bis(dichloroorganosilyl)alkanes and their preparation methods This invention relates to bis(dichloroorganosilyl)alkenes represented by the formula III and a process for the preparation of the compounds of formula III which... |
| US-5,527,933 |
Method for preparing a hybrid organodisilanol and polymers thereof There is disclosed an improved method for preparing a hybrid organodisilanol compound having the formula said method comprising: (A) reacting a dihydridosilane of the... |
| US-5,527,932 |
Curable organopolysiloxane composition containing novel adhesion promoter There is disclosed a curable organopolysiloxane composition suitable for forming an adherent coating on metals which is durable under acidic conditions, said... |
| US-5,527,931 |
Aqueous dispersable oil and water repellent silane masonry penetrants The present invention relates to organosilane compounds used for treating porous substrates to render them repellent to water-based and oil-based challenges and... |
| US-5,527,930 |
Aluminoxanes having increased catalytic activity Alkylaluminoxanes having improved catalytic activity such as when they are used in combination with metallocenes for the polymerization of alpha-olefins, are... |
| US-5,527,929 |
Zwitterionic biscyclopentadienyl complexes Zwitterionic biscyclopentadienyl, Group 4 transition metal complexes formed with conjugated dienes useful as catalysts for polymerizing olefins, diolefins and/or... |
| US-5,527,928 |
Cationic transport reagents For use in transporting biologically active species into and through membrane barriers, a symmetrical cationic diamine compound having the general structure ... |
| US-5,527,927 |
Process for producing glycidyl acrylate or glycidyl methacrylate There are disclosed a process for producing glycidyl acrylate or glycidyl methacrylate by the transesterification of glycidol and methyl methacrylate, etc. which... |
| US-5,527,926 |
Methods and compositions for using non-ionic contrast agents to reduce
the risk of clot formation in diagnostic... In accordance with the present invention a novel method and composition for using nonionic contrast media to reduce the risk of clot formation in a diagnostic... |
| US-5,527,925 |
Functionalized photoinitiators, macromers thereof, and the use thereof Compounds of formula I: ##STR1## are disclosed. The compounds are photoinitiators which can be functionalized by means of ethylenic groups or can be bonded... |
| US-5,527,924 |
Total synthesis of taxol The present invention provides two basic routes for the total synthesis of taxol having the structure: ##STR1## The present invention also provides the... |
| US-5,527,923 |
Process for preparing enantiomerically pure diarylprolinols The present invention relates to a new process for preparing enantiomerically pure diarylprolinols, especially (R)-(+)- or ... |
| US-5,527,922 |
Pyrrolo[3,4-c]pyrroles containing cyanimino groups The invention relates to pyrrolo[3,4-c]pyrroles of formula ##STR1## wherein D and E are each independently of the other hydrogen, C.sub.1 -C.sub.18 alkyl,... |
| US-5,527,921 |
Peroxycarboxylic ester initiators derived from nitrogen heterocycles Peroxycarboxylic ester photoinitiators derived from aromatic nitrogen containing heterocyclic carboxylic acids are described. The heterocyclic aromatic ring may... |
| US-5,527,920 |
Economical manufacturing process for 1,2,3-triazoles A high quality 1,2,3-triazole is obtained in a one pot two step reaction between appropriately substituted hydrazide derivatives, dihaloethanediol and NH.sub.3... |
| US-5,527,919 |
Process for the preparation of
1-[(1,1'-biphenyl]-4-YL]-methyl-1H-imidazole-5-carboxylic acids A novel process for the preparation of a compound of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are defined in the text. |
| US-5,527,918 |
Processes for preparing 1-butyl-2-[2'-(2H-tetrazol-5-yl)
biphenyl-4-ylmethyl]-1H-indole-3-carboxylic acid The present invention relates to processes for preparing 1-butyl-2-[2'-(2H-tetrasol-5-yl)biphenyl-4-ylmethyl]-1H-indole-3-carboxyli c acid and to intermediates... |
| US-5,527,917 |
Process for the preparation of 1,2-benzisothiazoles A process for the preparation of 1,2-benzisothiazoles of formula I ##STR1## wherein X is in any one of the 4 possible positions of the benzene ring and is... |
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