| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 03/03/1992 | US5093498 Trifluoromethylbenzyl containing quaternary salts |
| 03/03/1992 | US5093298 Maleic anhydride catalysts |
| 03/03/1992 | US5093001 Suction filtration with pressurization; blockage prevention efficiency, durability |
| 03/03/1992 | US5092965 Separation of 4-methyl-2-pentanone from acetic acid by extractive distillation with DMFA |
| 03/03/1992 | CA1296742C Process for the production of high purity terephthalic acids |
| 03/01/1992 | CA2090402A1 Carbonylation of methanol using a novel transition metal catalyst precursor |
| 03/01/1992 | CA2024284A1 Carbonylation of methanol using a novel transition metal catalyst precursor |
| 02/26/1992 | EP0472423A2 Preparation of perfluorooligoether iodides |
| 02/26/1992 | EP0472422A2 Oligohexafluoropropylene compounds and methods of making them |
| 02/26/1992 | EP0471853A1 Process for producing methacrylic acid |
| 02/26/1992 | CN1058986A Separating unsaponifiables from naphthenic acid |
| 02/26/1992 | CN1058956A Separating of cis-chrysanthemumic acid |
| 02/26/1992 | CN1058955A Process for purification of acetic anhydride and acid |
| 02/26/1992 | CN1058954A Method for complexing and separating normal fatty acid and normal hydrocarbon from rough naphthenic acid |
| 02/25/1992 | US5091568 Oxygen-ruthenium oxide oxidation of 2-hydroxy-3,3-dimethyl-butanoic acid |
| 02/25/1992 | US5091566 Process for the manufacture of aqueous solutions of glyoxylic acid |
| 02/25/1992 | US5091565 Poly-dicaboxylic acid anhydrides, their production and use |
| 02/25/1992 | US5091563 Process for preparing α-phenylpropionic acid derivative |
| 02/25/1992 | US5091386 7-substituted derivatives of 3,5-dihydroxyhept-6-ynoic acids and corresponding lactones and their use as hypercholeserolemics |
| 02/25/1992 | CA1296355C Process for preparing fluoroaliphatic ether-containing carbonyl fluoride compositions |
| 02/25/1992 | CA1296352C Aromatic dicyclic coumpounds, process for preparing such and use thereof in cosmetics |
| 02/20/1992 | WO1992002483A1 Method for racemization of non-racemic 3-oxocyclopentane or 3-oxocyclohexane carboxylic acids and their esters with c1-c6 alcohols |
| 02/20/1992 | WO1992002482A1 Process for the preparation of optically active or racemic cyclopropane-carboxylic-acid chlorides |
| 02/19/1992 | EP0471583A1 Process for the preparation of salts of iron amino and hydroxy carboxylic acid complexes |
| 02/19/1992 | EP0471566A1 Polymerisation process |
| 02/19/1992 | EP0471498A2 Optical resolution method |
| 02/19/1992 | CN1058730A Oxidation catalyst and process of preparation |
| 02/18/1992 | US5089664 Process for recovering lactic acid from solutions which contain it |
| 02/18/1992 | US5089662 Miticides |
| 02/18/1992 | US5089661 New process for the preparation of 2-aryl-propionic acids |
| 02/18/1992 | US5089158 Additives for lubricating oils and processes for producing them |
| 02/18/1992 | CA2049266A1 Concentration or separation method, copolyamides and copolyimids-amides and the use thereof |
| 02/18/1992 | CA2049217A1 Polymerisation process |
| 02/18/1992 | CA1295987C Process for overbasing via metal borate formation |
| 02/17/1992 | CA2046684A1 Process for the preparation of salts of iron amino and hydroxy carboxylic acid complexes |
| 02/16/1992 | WO1992003403A1 Process for the purification of acetic anhydride and acetic acid |
| 02/12/1992 | EP0470832A2 Biphenyl 5,5'-bis-alkanoic acid derivatives, their production and use thereof |
| 02/12/1992 | EP0470651A1 1,2-Di(4-isobutylphenyl) ethane and its preparation and use as intermediate |
| 02/12/1992 | EP0470516A2 Process for producing 3,5-di(alpha-methylbenzyl)salicylic acid derivative, and use of polyvalent-metal-modified product thereof as color developer |
| 02/12/1992 | CN1058583A Process for producing purified terephthalic acid |
| 02/11/1992 | US5087751 Method of preparing optically active 3,4-dihydroxy butyric acid derivatives |
| 02/11/1992 | US5087748 Using phase transfer agent catalyst |
| 02/11/1992 | US5087746 Hydrolyzing alkali metal epoxysuccinate by heating in basic aqueous solution under superatmospheric pressure |
| 02/11/1992 | US5087744 Preparation of methacrylic acid |
| 02/11/1992 | US5087742 Process for preparing aromatic polycarboxylic acids |
| 02/11/1992 | US5087741 Continuous production of aromatic carboxylic acids |
| 02/11/1992 | US5087735 Preparation of hexenedioic acid diesters |
| 02/11/1992 | US5087728 Process for producing carboxylic acids and esters thereof |
| 02/11/1992 | US5087599 Nickel/silica catalysts and their preparation |
| 02/07/1992 | CA2048286A1 Optical resolution method |
| 02/06/1992 | WO1992001675A2 Substituted bicyclic bis-aryl compounds exhibiting selective leukotriene b4 antagonist activity, their preparation and use in pharmaceutical compositions |
| 02/06/1992 | WO1992001663A1 A method for preparing 4-chloro-2-methylphenoxyalkanoic acids |
| 02/06/1992 | WO1992001644A1 Aluminium oxide fibres and process for producing them |
| 02/06/1992 | DE4024836A1 Verfahren zur racemisierung A process for the racemisation |
| 02/05/1992 | EP0469482A1 Method of purifying salts of long chain aliphatic carboxylic acids and their application as plastic additives |
| 02/05/1992 | EP0469327A2 Process for producing purified terephtalic acid |
| 02/05/1992 | EP0469041A1 A process for isomerizing olefinically unsaturated secondary alcohols |
| 02/04/1992 | US5086188 Preparation of 3,5-dichlorophthalic acid and 3,5-dichlorophthalic anhydride |
| 02/04/1992 | US5086182 Intermediates for the production of epipodophyllotoxin and related compounds and processes for the preparation and use thereof |
| 02/04/1992 | US5086065 Leukotriene antagonists |
| 01/29/1992 | EP0468927A2 Derivatives of carboxymethylcyclopropane |
| 01/29/1992 | EP0468681A1 Alfa-fluorocarboxylic acid derivatives as intermediates for the preparation of fungicides |
| 01/29/1992 | EP0468592A2 Process for the preparation of S(+)-6-methoxy-alpha-methyl-2-naphtalene-acetic acid |
| 01/29/1992 | EP0468303A1 Method of recovering carboxylic acids from their aqueous solutions |
| 01/29/1992 | CN1058210A High yield recycle process for lactide |
| 01/29/1992 | CN1058154A 甲醇的羰基化 Carbonylation of methanol of |
| 01/28/1992 | US5084569 Trioxy bicyclic compounds useful for preparing optically active carboxylic acids |
| 01/28/1992 | US5084263 Ammonia, phosphoric acid and mineral acid complexes for fungicides, germicides and metal complexing agents |
| 01/28/1992 | US5084259 Crystalline nickel aluminum borates |
| 01/28/1992 | US5084147 Process of synthesis of organic substances by an indirect electrochemical route with a redox system in the solid state |
| 01/28/1992 | CA2047901A1 Carboxymethylcyclopropane derivatives |
| 01/28/1992 | CA2047511A1 Fungicide intermediates |
| 01/28/1992 | CA1294976C 4-phenyl 4-oxo 2-butenoic acid derivatives, process for preparing such, their use as medications and preparations containing such derivatives |
| 01/25/1992 | CA2087848A1 Substituted bicyclic bis-aryl compounds exhibiting selective leukotriene b4 antagonist activity, their preparation and use in pharmaceutical compositions |
| 01/24/1992 | WO1992001662A1 Process for preparing diketones and keto-acids |
| 01/24/1992 | CA2086412A1 Process for preparing diketones and keto-acids |
| 01/23/1992 | WO1992000974A1 High yield recycle process for lactide |
| 01/22/1992 | EP0467851A1 Stabilized monomer compositions |
| 01/22/1992 | EP0467850A1 Stabilized monomer compositions |
| 01/22/1992 | EP0467849A1 Stabilized monomer compositions |
| 01/22/1992 | EP0467848A1 Stabilized monomer compositions |
| 01/22/1992 | EP0467061A2 Process for production of carboxylic acid |
| 01/21/1992 | US5082832 Pesticides |
| 01/21/1992 | US5082819 Catalyst for catalytic gas phase oxidation of olefins into unsaturated aldehydes and method for making the catalyst |
| 01/21/1992 | CA2047383A1 Stabilized monomer compositions |
| 01/21/1992 | CA2047338A1 Stabilized monomer compositions |
| 01/15/1992 | EP0466480A1 Process for preparing a catalyst and use of that catalyst for producing maleic anhydride from butane |
| 01/15/1992 | EP0465844A2 Purification method of 2-chloropropionic acid |
| 01/15/1992 | EP0465653A1 Method for obtaining a promoter of adhesion between rubber and metal cord |
| 01/15/1992 | EP0439578A4 Process for the production of trimellitic anhydride with improved color |
| 01/15/1992 | EP0370054B1 Catalyst composition and method for selective dehydrogenation |
| 01/15/1992 | CN1057829A Preparation method of anti-form-cyclopentane-1,2-dicarboxylic acid |
| 01/14/1992 | US5081292 Preparation of β, γ-unsaturated carboxylic acids |
| 01/14/1992 | US5081291 Process for manufacture of 3,3',4,4'-biphenyltetracarboxylic acid |
| 01/14/1992 | US5081290 Heavy metal compound, bromine source, nonmetal acetate |
| 01/14/1992 | US5081283 Fluorocyclopropyl derivative fungicide intermediates |
| 01/14/1992 | US5081279 From 3-ethylbenzophenone; dehydrogenating, carbonylating |
| 01/14/1992 | US5081263 Dioxane adducts of aromatic meta- or para-hydroxy-carboxlic acids |
| 01/14/1992 | US5081252 Process for the preparation of aromatic carboxylic acids |
| 01/14/1992 | US5081249 From gaseous fluorine and solution of pyridinesulfonate |