Patents
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Patents for C07C 67 - Preparation of carboxylic acid esters (66,429)
12/1991
12/19/1991DE4019170A1 Verfahren zum durchfuehren einer gleichgewichtsreaktion unter anwendung von daempfepermeation A method of conducting an equilibrium reaction using vapor permeation
12/19/1991CA2043649A1 Preparation of optically active aliphatic carboxylic acids
12/18/1991EP0461975A1 The preparation of unsaturated carboxylic acid esters by liquid phase (trans-)esterification using heteropolyacids as catalysts
12/18/1991EP0461580A2 Process for producing cyclohexyl acetate
12/18/1991EP0461322A1 Method for the manufacture of hydroxy aromatic monocarboxylic acids
12/18/1991EP0461167A1 Process for producing fatty acid glycerides
12/18/1991CN1015104B Deprotection of allylic esters and ethers
12/18/1991CN1015102B Process for preparation of novel quinaldinamide derivs
12/17/1991US5073672 Catalyst of the gallosilicate type and its utilization for the aromatization of light C2 -C4 gases
12/17/1991US5073659 Process for the preparation of terpenes
12/17/1991US5073649 Reacting ammonia, alkylenamines and alkanolamine in presence of niobium-containing catalyst
12/17/1991US5073641 Prodrug derivatives of carboxylic acid drugs
12/17/1991US5073570 Mono-iodopropargyl esters of dicarboxylic anhydrides and their use as antimicrobial agents
12/17/1991US5073362 Dicarboxylic acid-bis(3,5-dicarbamoyl-2,4,6-triiodoanilides) and x-ray contrast media containing them
12/17/1991US5073277 Lubricants containing ammonium salts of methylphosphonic acid
12/17/1991US5073184 Agricultural fungicides, insecticides, plant growth regulators
12/17/1991CA1293270C Co-production of aromatics and olefins from paraffinic feedstocks
12/17/1991CA1293269C Stabilization of zinc on aromatization catalysts
12/17/1991CA1293268C Process for preparing fluoroethylenes and chlorofluoroethylenes from chlorofluoroethanes
12/17/1991CA1293266C Synthesis of (1-phenyl-ethyl) hydroquinone
12/17/1991CA1293255C Water addition to enchance phosphoric acid salt catalytic activity
12/17/1991CA1293253C Antioestrogenic phenol derivatives
12/12/1991WO1991018861A1 2-(hydroxymethyl) acrylate derivatives and process for their preparation
12/12/1991WO1991018860A1 Process for producing ketone compounds
12/11/1991EP0461043A2 Enantiomer separation by transesterification
12/11/1991EP0460917A2 Method of producing eicosapentaenoic acid or an ester derivative thereof
12/11/1991EP0460831A2 Production of hydroxy carboxylic compounds
12/11/1991EP0460363A1 Method for the production of mono-fatty acid or hydroxy-mono-fatty acid esters of isopropylidene derivatives of a polyglycerol
12/11/1991EP0460253A1 Process for making carboxylic acid esters using a crosslinked acrylic resin as the catalyst
12/11/1991EP0460240A1 Catalyst for hydrogenation, dehydrosilylation or hydrosilylation, and its use
12/11/1991EP0452411A4 Acid catalyzed process
12/11/1991CN1015055B Process for preparation of indole derivative and its modical use
12/11/1991CN1015044B Preparation of 2-(2-nitrobenzoyl)-1, 3-cyclohexadione compounds, and uses thereof
12/10/1991US5072055 Dealkylated in ortho position
12/10/1991US5072038 Chemical intermediates for bactericides
12/10/1991US5072030 Process for the fluorination of acrylic acid and derivatives thereof and novel fluorinated esters of 2,3-difluoropropionic acid
12/10/1991US5072029 Catalyzed process for reacting carboxylic acids with vinyl ethers
12/10/1991US5072028 Process for the preparation of bromo-substituted aromatic esters of α,β-unsaturated acids
12/10/1991US5072027 Process for producing methacrylic acid esters
12/10/1991US5072023 Process for preparing highly substituted phenyls
12/10/1991US5072022 Enantiomers or racemates; preferably postemergent application
12/10/1991US5072017 Process for the preparation of p-substituted o-benzylphenols
12/10/1991US5072005 Reacting acrolein, carbon monoxide, methanol in presence of palladium catalyst, hydrogen halide and arylarsine promoter
12/10/1991US5071975 Esterification of sucrose with fatty acid alkyl esters, alkaline catalyst
12/10/1991US5071898 Chlorinated vinyl and polyolefin resin; heat resistance
12/10/1991US5071754 Fermenting carbohydrate with lactic acid producing organism in presence of ammonia to produce ammonium lactate; mixing with alcohol; catalytic esterification
12/10/1991US5071707 Microcapsule for use in making carbonless transfer paper
12/10/1991US5071640 Cosmetic composition containing a polyoxyethylenated non-ionic surface-active agents with two lipophilic chains
12/10/1991CA1292994C Process for the preparation of ethyl trifluoroacetate
12/09/1991CA2044042A1 Production of hydroxy carboxylic compounds
12/05/1991DE4017903A1 Prepn. of ester of higher aromatic carboxylic acid and higher alkanol - by reaction of acid or anhydride and alcohol in presence of sulphonic acid or amine with passage of inert gas
12/04/1991EP0295283B1 Improvements in or relating to the formation of metal alkoxides and metal powders by the use of microwave radiation
12/04/1991CN1014988B Improved process for mfr. of 1,1,1-trifluorodichloroethy lene and 1,1,1,2-tetrafluorochloroethylene
12/03/1991US5070103 Naphthalene derivatives and composition and methods of use, and aldehyde intermediates
12/03/1991US5070062 Oxychlorination catalyst, the method for its preparation
12/03/1991US5070061 Isobutyric acid to methacrylic acid
12/03/1991US5070059 Ammoxidation; mixed oxides of vanadium, chromium, molybdenum a nd boron
12/03/1991CA1292837C Preparation of polyether compositions
12/03/1991CA1292754C Lubricants comprising novel cyclopentanes, cyclopentadienes, cyclopentenes, and mixtures thereof and methods of manufacture
12/03/1991CA1292751C Process for production of isothiocyanates
12/03/1991CA1292750C Certain 3-(substituted thio)-2-benzoyl-cyclohex-2- enones
12/03/1991CA1292748C Stable thiocyanogen composition
12/03/1991CA1292747C Aralykyl (arylethynyl) aralkyl amines and their use as vasodilators and antihypertensives
12/03/1991CA1292744C 9-amino-1,2,3,4-tetrahydroacridin-1-ol and related compounds, a process for their preparation and their use as medicaments
12/03/1991CA1292733C Olefin oligomerization process and catalyst
12/03/1991CA1292721C Process for working-up aqueous amine solutions
12/03/1991CA1292719C Purification of n-vinylformamide and poly-n- vinylformamides prepared therefrom
11/1991
11/28/1991CA2017633A1 Process for making carboxylic acid esters using a crosslinked acrylic resin as the catalyst
11/27/1991EP0458684A1 Reagent and process for the perfluoroalkylation of nucleophilic substrates by sodium perfluoroalkanesulfinates in an oxidising medium
11/27/1991EP0458643A2 Process for preparing an optically active cyclobutanone, an intermediate in the synthesis of an optically active cyclobutane nucleoside
11/27/1991EP0282579B1 Cyclopentanes and lubricants comprising cyclopentanes
11/27/1991EP0261191B1 Industrial process for the preparation of amino acids by hydrolysis of proteins in acid medium
11/27/1991EP0211916B1 Process for the preparation of alkyl fluorides
11/27/1991CN1056488A Process for synthesizing butyl salicylate, isobutyl salicylate and isoamyl salicylate
11/27/1991CN1056487A Process for preparing 2,2-dimethyl-5-(2,5-dimethyl phenoxy) pentanoic acid
11/27/1991CN1014887B Process for preparation of amides, pharmacologically active compound
11/27/1991CN1014865B Process for extraction of organic liquid containing nitrogenous organic base from aqueous slurry of particles of inorganic material
11/26/1991US5068477 Impregnation with reducing agent, decomposition with heat and drying
11/26/1991US5068467 Process for production of solid sorbitol
11/26/1991US5068464 Process for the oxidation of hydrocarbons utilizing partitioning of oxidizing gas
11/26/1991US5068461 Insecticidal ethers
11/26/1991US5068450 Formylation of aromatic compounds in the presence of boron trifluoride
11/26/1991US5068442 Controlling the amount of formaldehyde as impurities in gases
11/26/1991US5068441 N-benzoyl-n'trihalo-haloalkoxyphenylureas and pesticidal compositions containing them
11/26/1991US5068440 Process for the manufacture of N,N-dimethyl-1-[1-(4-chlorophenyl)cyclobutyl]-3-methylbutylamine hydrochloride monohydrate
11/26/1991US5068438 Process for surface treatment of N-alkyl-N'phenyl-p-phenylenediamine
11/26/1991US5068435 Ortho-alkylated aromatic amines via gamma alumina catalyst
11/26/1991US5068434 Alkylation of an aniline compound with a zeolite catalyst
11/26/1991US5068433 Antidepressants
11/26/1991US5068429 Method of purification of the oxalic acid diamide
11/26/1991US5068415 Process for the preparation of halogenotetrafluoropropionic acid
11/26/1991US5068411 Trifluorobenzene compounds and process for producing the same
11/26/1991US5068403 Intermediates useful in the production of pesticides
11/26/1991US5068401 Method for preparing organic esters from halocarbons and alkali metal carboxylates
11/26/1991US5068399 Process for preparing unsaturated carboxylic acid ester
11/26/1991US5068394 Herbicidal (hetero)aryloxynaphthalene derivatives and intermediates therefor
11/26/1991US5068389 Tertiary alcohols
11/26/1991US5068340 Antagonist of platelet activating factor for treatment of asthma, inflammation or shock
11/26/1991US5068244 Benzocyclohexanes and analgesic compositions thereof
11/26/1991US5068214 Impregnation a support with a solution of a platinum derivative and a cobalt salt, evaporation of a solvent and heating in hydrogen
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