| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 02/13/1991 | EP0412933A1 Coating compositions |
| 02/12/1991 | US4992592 Fluoromalonaldehyde acetals from reaction of alcohol and acid |
| 02/12/1991 | US4992582 Koch synthesis from propylene, carbon monoxide and water in presence of hydrogen fluoride under pressure |
| 02/12/1991 | US4992580 Oxidation of polymethylbenzenes in aliphatic carboxylic acid solvent |
| 02/12/1991 | US4992579 Catalytic oxidation using cerium, cobalt, manganese, zirconium, bromine containing catalyst |
| 02/12/1991 | US4992577 Preparation of 3-vinyl-substituted 2,2-dimethylcyclopropane-1-carboxylic acids and esters and intermediates therefor |
| 02/12/1991 | US4992574 Benzocycloheptene derivatives |
| 02/12/1991 | US4992518 Polymers obtained by heating allybicyclo[2.2.1]hept-5-ene-2-carboxylic acid amides for between 6 and 60 hours at 150°-300° C. |
| 02/12/1991 | US4992473 Beta-phenethanolamines |
| 02/12/1991 | US4992469 Method of obtaining an antiplatelet effect |
| 02/12/1991 | US4992459 Hypotensive agents, antiulcer agents |
| 02/12/1991 | CA1280118C 1 .alpha.-FLUOROACRYLIC ACID ESTERS AND POLYMERS THEREOF |
| 02/12/1991 | CA1280112C Prostaglandin i2 analogue and pharmaceutical containing the same |
| 02/06/1991 | EP0411790A1 Process for the preparation of nylon salts |
| 02/06/1991 | EP0411666A2 Fluorinated carboxylic acid derivatives and methods for making |
| 02/06/1991 | EP0411252A1 Process for the preparation of fluorobenzoic acids |
| 02/06/1991 | EP0411074A1 Resolution process |
| 02/06/1991 | EP0411016A1 Process for inhibiting the polymerization of acid monomers. |
| 02/05/1991 | US4990681 Method for removing hydrogen fluoride from mixtures comprising aromatic ketones |
| 02/05/1991 | US4990661 Process for the preparation of benzoic acid derivatives |
| 02/05/1991 | US4990660 Preparation of aromatic hydroxycarboxylic acids |
| 02/05/1991 | US4990659 Process for the manufacture of derivatives of benzoic acid |
| 02/05/1991 | US4990658 Carbonylating 1-halo-/4-isobutylphenyl/ethane with carbon monoxide in water or alcohol using palladium complex catalyst |
| 02/05/1991 | US4990657 Process for the preparation of aromatic acid |
| 02/05/1991 | US4990639 Oxidation of rhodium complex to water insoluble carboxylic acid salt; solvent extraction |
| 02/05/1991 | US4990633 Fluorinated bisaryloxy-substituted alkenes, process for their preparation and their use |
| 01/31/1991 | DE3923834A1 Continuous sepg. liq. from phthalic acid anhydride mfr. - by regenerative heat exchanger whose channels resist capillary clogging |
| 01/30/1991 | EP0410728A1 Improved carboxylic acid purification and crystallization process |
| 01/30/1991 | EP0410244A1 Leukotriene antagonists |
| 01/30/1991 | EP0216785B1 Indene analogs of mevalonolactone and derivatives thereof |
| 01/30/1991 | CA2021972A1 Process for the preparation of nylon salts |
| 01/29/1991 | US4988825 Oxidation of an aldehyde or ketone with an alkali metal perborate to form an acid or ester in the presence of an acid |
| 01/29/1991 | US4988732 3,7,11,15-tetramethyl-2,4,6,10,14-hexadecapentaenoic acid composition and use for treating papillomata |
| 01/29/1991 | US4988652 Process for recovering catalyst for use in preparing α-(4-isobutylphenyl)propionic acid |
| 01/29/1991 | CA1279656C Process for separating iodine and its compounds from the products obtained on subjecting dimethylether, methyl acetate or methanol to carbonylation |
| 01/29/1991 | CA1279655C Process for separating iodine and its compounds from the products obtained on subjecting dimethylether, methyl acetate or methanol to a carbonylation reaction |
| 01/28/1991 | CA2021996A1 Leukotriene antagonists |
| 01/25/1991 | WO1991001290A1 Process for making bismuth carboxylates |
| 01/23/1991 | EP0409437A2 Process for preparing aromatic polycarboxylic acids |
| 01/23/1991 | EP0409320A2 Process for the isolation of hydroxy fatty acid derivatives from convolvulaceae plants |
| 01/23/1991 | EP0409172A2 Process for dimerizing aromatic halogen compounds |
| 01/23/1991 | EP0408644A1 Process for preparation of an oxyacetic acid/hydroxyethyl ether compound. |
| 01/22/1991 | US4987273 Reverse osmosis |
| 01/22/1991 | US4987254 Fluorinated carboxylic acid fluorides |
| 01/22/1991 | US4987252 Quenching process of reaction product gas containing methacrylic acid and treatment method of quenched liquid |
| 01/22/1991 | US4987251 Cyclization and rearrangement of chlorketone with aqueous base |
| 01/22/1991 | US4987239 Process for the production of anhydrides |
| 01/22/1991 | US4987147 Low toxicity |
| 01/16/1991 | EP0408340A2 Ruthenium-optically active phoshine complex useful as catalyst |
| 01/16/1991 | EP0408338A2 Catalytic production of carboxylic acids and esters thereof |
| 01/16/1991 | EP0407687A1 Process for hydroformylation |
| 01/16/1991 | EP0407588A1 Process for producing 2-oxo-3-aromatic carboxylic acid derivatives |
| 01/16/1991 | CN1048540A Methyl acrylic acid made by sobutene or tertiary butanol double step oxidation |
| 01/16/1991 | CN1048539A Process and catalyst for production of ethylene and acetic acid |
| 01/16/1991 | CN1011201B Alkali resistant hyperfiltration membrane |
| 01/15/1991 | US4985594 Process for the preparation of fluorinated carboxylic acid fluorides |
| 01/15/1991 | US4985592 Catalytic oxidation of acrolein or methacrolein |
| 01/15/1991 | US4985553 Process for the oxidation of di-, tri-, Oligo- and polysaccharides into polyhydroxycarboxylic acids, catalyst used and products thus obtained |
| 01/15/1991 | US4985383 Process for removing metallic corrosion products from a contaminated catalyst solution produced on carbonylation of methanol and/or methyl acetate and/or dimethyl ether |
| 01/10/1991 | WO1991000263A1 Process for making symmetrical di-fatty acid diamides |
| 01/09/1991 | EP0407091A1 Process and catalyst for the production of ethylene and acetic acid |
| 01/09/1991 | EP0406714A1 Method for the production of carboxylic acid chlorides |
| 01/09/1991 | EP0406424A1 Process for recovering crystals from slurry |
| 01/08/1991 | US4983779 Coupling carbonyl compound with ester in organic solvent in presence of metallic reducing agent, titanium salt, amine base |
| 01/08/1991 | US4983767 Preparation of aliphatic carboxylic acids by oxidation of monocyclic ketones |
| 01/08/1991 | US4983765 Process to separate mixtures of enantiomeric arylpropionic acids |
| 01/08/1991 | US4983758 Di- and trihalophenyl esters, racemic mixture resolution, esterification of acid or halide with halo phenol, racemization of optically active ester |
| 01/08/1991 | US4983630 2,2-difluorocyclopropylethane derivatives, processes for their preparation and their use as pesticides |
| 01/08/1991 | US4983564 Three dimensional polyphosphates to encapsulate active moieties, such as catalysts, pesticides |
| 01/05/1991 | CA2019509A1 Process and catalyst for the production of ethylene and acetic acid |
| 01/03/1991 | DE4019088A1 Prepn. of symmetrical di- fatty acid di-amide - by reaction of fatty acid or ester, opt. as crude fat or oil, with di-amine |
| 01/02/1991 | EP0405707A1 Fermentation and purification process for succinic acid |
| 01/02/1991 | EP0405517A2 Process for preparing bromodifluoroacetylfluoride |
| 01/02/1991 | EP0405508A2 Process for producing pyromellitic dianhydride |
| 01/02/1991 | EP0405433A1 Improved process for the manufacture of 3-pentenoic acid |
| 01/02/1991 | EP0405389A1 Process for producing an aromatic compound |
| 01/02/1991 | EP0405116A2 Phenylalkan(en)oic acids |
| 01/01/1991 | US4982007 Carbonylation catalyst |
| 01/01/1991 | US4981999 Hydrodechlorination |
| 01/01/1991 | US4981998 Process for the preparation and purification of D-hydroxyphenoxypropionic acid |
| 01/01/1991 | US4981995 Carbonylation catalyst |
| 01/01/1991 | US4981619 Process for preparing alpha-hydroxy acids |
| 12/27/1990 | EP0404643A1 Method for removing mercaptans |
| 12/26/1990 | CN1047985A Method and application of catalyst for the prodn. of methacrylic acid |
| 12/26/1990 | CN1010937B Recovery of organic acids catalyst and water from terephehalic acid mfr. |
| 12/25/1990 | US4980503 Conversion of glycol formates to monocarboxylic acids |
| 12/23/1990 | WO1990015790A1 Improved asymmetric catalytic hydrogenation of alpha-arylpropenoic acids |
| 12/23/1990 | CA2029882A1 Asymmetric catalytic hydrogenation of alpha-arylpropenoic acids |
| 12/22/1990 | CA2019488A1 Method for removing mercaptans |
| 12/19/1990 | EP0403325A2 Diallyloxyacetic acid and its basic additon salts, its preparation process and its application as a reticulating agent |
| 12/19/1990 | CN1047854A Process for making oxalic acid by oxidizing starch with nitric acid and nitrogen dioxide simultaneously |
| 12/18/1990 | US4978785 Oxidation of polyoxypropylene glycols to acids and ketones |
| 12/18/1990 | US4978784 Process for industrial manufacture of sodium parahydroxymandelate |
| 12/18/1990 | US4978776 Process for the manufacture of methyl methacrylate from isobutyric acid |
| 12/18/1990 | US4978775 Process for producing bicyclo[3.3.0]octanes |
| 12/18/1990 | US4978769 Process for introducing fluorine atoms into aromatic rings by nucleophilic exchange |
| 12/18/1990 | US4978760 Preparation of halogen substituted phthalic anhydride |
| 12/18/1990 | US4978756 Compound and use |
| 12/18/1990 | US4978430 Evaporation, separation of water vapor with polyimide membrane selective permeation |
| 12/13/1990 | WO1990015053A1 Alkylene oxide production using vapor phase oxidation of an alkane or olefin in molten salt followed by a liquid phase co-oxidation of said olefin and an aldehyde in an organic solvent |