Patents
Patents for C07C 67 - Preparation of carboxylic acid esters (66,429)
10/1991
10/23/1991CN1014403B Process for production of 2,3 dimethylbutene-1 from propene
10/23/1991CN1014402B Process for removing arsine from light olefin-containing hydrocarbon feedstocks
10/23/1991CN1014398B Process for preparation of hydrocarbons
10/22/1991US5059742 Process for separating 2,6-dimethylnaphthalene
10/22/1991US5059729 Process for preparing 1,2-difluoroethane and 1,1,2-trifluoroethane
10/22/1991US5059711 Oxidizing bis(trifluoromethyl) disulfide in liquid phase
10/22/1991US5059328 Separation agent comprising 1,3-glucan
10/22/1991US5059306 Process for removing pure aromatics
10/22/1991US5059288 Recovery of isopropyl acetate and ethanol from an isopropyl acetate, ethanol and water-containing stream
10/22/1991CA1291172C Process for the catalytic trans-halogenation of a polyiodo-benzene, and, in particular, of a di-iodo-benzene
10/22/1991CA1291169C Preparation process of 4-(4-hydroxophenyl)- cyclohaxanol
10/22/1991CA1291165C Alkylsulfonamidophenylalkylamines
10/22/1991CA1291163C Benzenesulfonamido derivatives
10/22/1991CA1291162C N-sulphenylated benzenesulphonic acid amide fungicides
10/22/1991CA1291161C Preparation of anhydrous alkanesulfonic acid
10/22/1991CA1291158C Process for the preparation of an ester of a 3-aryl-substituted acrylic acid
10/22/1991CA1291155C Process for the preparation of carbamates
10/22/1991CA1291154C 2,2-dihalovinyl haloformates, process of preparation and applications thereof
10/22/1991CA1291151C N-benzoyl-n'-3,5-dichloro-4-hexafluoropropyloxy-phenylureas
10/22/1991CA1291150C Process for the preparation of alkoxycarbonyl isocyanates
10/22/1991CA1291148C Alkoxylation process using calcium based catalysts
10/22/1991CA1291146C Molybdenum/alkali metal/ethylene glycol complexes useful as epoxidation catalysts
10/22/1991CA1291140C 1,1-dialkoxy-2-methyl-4,4-diacyloxy-2-butenes
10/22/1991CA1291139C Cyclohexane-1,3-dione derivatives, processes for their manufacture, and their use for controlling undesirable plant growth
10/18/1991WO1991016362A1 Process for direct addition of acid to polymers
10/18/1991CA2080120A1 Process for direct addition of acid to polymers
10/17/1991WO1991015455A1 Esters and fluids containing them
10/17/1991WO1991015453A1 Catalyzed process for reacting carboxylic acids with vinyl ethers
10/17/1991WO1991015452A1 Process for the production of fatty acid alkyl esters
10/17/1991WO1991006537A3 Substituted indole-, indene-, pyranoindole- and tetrahydrocarbazole- alkanoic acid derivatives as inhibitors of pla2 and lipoxygenase
10/17/1991CA2079103A1 Esters and fluids containing them
10/16/1991EP0451873A1 Derivatives of 2,2-dimethyl cyclopropanecarboxylic acid substituted at c-3 by a saturated halogenated chain, process for their preparation and their use in the synthesis of pesticidal products
10/16/1991EP0306521B1 Ethine derivatives as compounds of liquid crystal phases
10/16/1991EP0276231B1 Transition metal complex catalyzed hydroformylation
10/16/1991EP0273060B1 Process for producing unsaturated carboxylates
10/16/1991EP0269718B1 Catalytic vapor phase process for producing dihydrocarbyl carbonates
10/16/1991CN1055360A Catalysed hydrogenation of carboxylic acids and their anhydrides to alcohols and/or esters
10/15/1991US5057530 Glycerol derivatives
10/15/1991US5057302 Bifunctional chelating agents
10/15/1991CA1290767C Method for production of unsaturated carboxylic acid esters
10/15/1991CA1290760C Reduction of carboxylic esters
10/15/1991CA1290738C Attrition-resistant catalyst composition, method of making and use
10/09/1991EP0450892A1 Cinnamic acid derivative and external skin treatment preparation containing the same
10/09/1991EP0450621A2 Process for the preparation of high-purity 2,6 naphthalenedicarboxylic acid esters
10/09/1991EP0449966A1 Low pressure rhodium catalyzed hydroformylation of olefins
10/09/1991EP0449919A1 Improved process for producing esters of (meth)acrylic acid and polyhydric alcohols (iv).
10/09/1991EP0449918A1 Improved process for producing esters of (meth)acrylic acid and polyhydric alcohols (i).
10/09/1991EP0449913A1 Improved process for producing esters of (meth)acrylic acid of polyhydric alcohols (iii).
10/09/1991EP0449912A1 Improved process for producing esters of (meth)acrylic acid of polyhydric alcohols (ii).
10/09/1991EP0449865A1 Improved dry neutralization process for liquid organic phases.
10/09/1991EP0253837B1 Catalytic method for producing fluoroaromatic compounds using branched alkyl pyridinium salts
10/09/1991CN1055177A Prepn. of beta-ketoesters useful in preparing quinolone antibiotics
10/09/1991CN1014239B Pesticide of n-(vinal oxyethyl) dithio-carbamate
10/09/1991CN1014236B Substituted phenyl alpha-fluoroacrylates
10/09/1991CN1014235B Process for prodn. of dialkyl dis-butendioate
10/09/1991CN1014233B Oligomerization of olefins
10/08/1991US5055613 Metabolites of pentanedioic acid derivatives
10/08/1991US5055610 Process for the separation of sulphuric acid from aqueous mixtures thereof with paraffin-sulphonic acids
10/08/1991US5055592 For preparation of prostaglandin derivatives
10/08/1991US5055451 Prevent tissue damage
10/08/1991CA1290354C Process for the selective hydrogenation of alkynes
10/08/1991CA1290353C Process for isomerization of a hydrocarbon feed stream
10/08/1991CA1290352C Alkylation process utilizing enhanced boiling surface heat exchanger in the reaction zone
10/08/1991CA1290351C Process for preparing 1,1,1-trifluoro-2,2- dichloroethane by hydrofluorination in the presence of catalysts
10/08/1991CA1290350C Hydroformylation catalyst removal
10/08/1991CA1290349C Hydrogen acceptor catalysis for aromatization of hydroaromatic compounds
10/08/1991CA1290348C Aromatization of dihydroaromatic compounds by treatment with bases
10/08/1991CA1290347C Diamine derivatives
10/08/1991CA1290344C Process for producing t-butyl methacrylate
10/08/1991CA1290331C Prostacyclins and pharmaceuticals containing the same
10/08/1991CA1290326C Acrylic acid amides
10/08/1991CA1290325C Protic solvent in a dehydrohalogenation process, the product obtained therefrom and lubricant compositions containing same
10/04/1991WO1991015454A1 Method for preparing 1,4-diacyloxy-2-butenes
10/04/1991CA2056429A1 Method for preparing 1,4-diacyloxy-2-butenes
10/03/1991WO1991015441A1 Use of hydrophobised hydrotalcites as catalysts for ethoxylation or propoxylation
10/03/1991WO1991014691A1 Process for preparing penem esters
10/03/1991WO1991014669A1 A process for isomerizing epoxides to ketones
10/03/1991CA2079806A1 Use of hydrophobised hydrotalcites as catalysts for ethoxylation or propoxylation
10/03/1991CA2039423A1 Cinnamic acid derivative and external skin treatment preparation containing the same
10/02/1991EP0449778A2 Process for the preparation of hydroxyphenylepropionates
10/02/1991EP0449777A1 Process for the preparation of hydroxyphenylpropionates
10/02/1991EP0449693A1 Catalyst and process for the preparation of esters of saturated carboxylic acids
10/02/1991EP0449445A2 Preparation of beta-ketoesters useful in preparing quinolone antibiotics
10/02/1991EP0449296A1 Palladium catalyzed carboalkoxylation of butadiene
10/02/1991EP0449049A2 Naphthalenedicarboxylic acid esters
10/02/1991EP0448775A2 Colorless grained alpha-form crystals of tetrakis [3-(3,5-Di-T-butyl-4-hydroxyphenyl)propionyloxymethyl]methane and process for its manufacture
10/02/1991EP0448602A1 Method for functionalization of nucleophiles
10/02/1991EP0309533B1 Butyl hydroxyanisoles for the treatment of retroviral diseases
10/02/1991EP0217804B1 Analogs of substances p
10/02/1991DE4009910A1 Ethenolytic metathesis of olefin(s) - using organo-rhenium oxide catalyst on oxidic carrier
10/02/1991CN1054983A Process for preparing penem esters
10/02/1991CN1014145B Purification of terephthalic acid
10/02/1991CN1014144B Prepn. for bisphenol a
10/02/1991CN1014110B Process for preparing benzoylphenylureas
10/01/1991US5053571 Ruthenium and nickel/support on zeolite beta selectivity
10/01/1991US5053560 Feeding agqeuous potassium hydroxide with excess tert-butanol; methylcyclohexane or heptane as withdrawing agent
10/01/1991US5053551 Process for the production of aldehydes by hydroformylation
10/01/1991US5053550 Cyclization of 4-chlorobutanol; heating in liquid two phases (mineral base aqueous and water immiscible organic); continuous processing
10/01/1991US5053547 Benzonorbornene derivatives, processes for their preparation and medicinal and cosmetic compositions containing them
10/01/1991US5053533 Continuous processing of 1-chloro-2-methoxy-napthalene under Friedel-Craft conditions, without isolation/purification of chemical intermediate