| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 06/02/1992 | US5118841 Catalytically reducing disodium salt of terephthalic or isophthalic acid with hydrogen; acidification; crystallization |
| 06/02/1992 | US5118839 Catalytically treating with a super acid a nitroaromatic compound with aromatic diacid halide |
| 06/02/1992 | US5118838 Air pollution control; absorption of activated carbon |
| 06/02/1992 | US5118837 Reaction of olefinic double bond in presence of other, less reactive olefinic double bonds; modified ruthenium catalyst with trivalent phosphorus or nitrogen or divalent sulfur compound |
| 06/02/1992 | US5118825 Ruthenium phosphine complex |
| 06/02/1992 | US5118483 Hydrorefining catalysts |
| 06/02/1992 | CA1302431C (vinylphenyl)phenylmethane and method for producing (benzoylphenyl)propionic acid |
| 06/02/1992 | CA1302403C Amyloidosis and alzheimer's disease diagnostic assay and reagents therefor |
| 05/30/1992 | WO1992009551A1 Continuous production of aromatic carboxylic acids |
| 05/27/1992 | EP0487284A2 Removal of carbonyl impurities from a carbonylation process stream |
| 05/27/1992 | EP0304495B1 Process for selectively monohydroesterifying diolefin |
| 05/27/1992 | DE4037251A1 Prepn. of optically active alpha-hydroxy:carboxylic and alpha-acetoxy:carboxylic acid - by acylation of racemate of alpha-hydroxy:carboxylic acid with vinyl carboxylate, using lipase in organic solvent |
| 05/27/1992 | CN1061403A Process for preparing rare earth ammonium double oxalate and use in preparing rare earth oxidate and obtained rare earth oxidate |
| 05/27/1992 | CN1061402A Process for preparing rare earth ammonium double oxalate and use for preparing rare earth oxidate |
| 05/27/1992 | CN1061401A Process for production of carboxylic cid anhydrides |
| 05/27/1992 | CN1061400A Acetone removal process |
| 05/27/1992 | CN1061352A Shaped oxidation catalyst structures for production of maleic anhydride |
| 05/26/1992 | US5117055 Method for direct conversion of fluorocarbonyl group into halogenides |
| 05/26/1992 | US5117007 Catalytic oxidation with vanadium and orthophosphoric acid alkyl ester |
| 05/26/1992 | US5117002 Preparation of diphenyl ether |
| 05/22/1992 | WO1992009555A1 Process for the preparation of phenyl carbonates |
| 05/21/1992 | EP0537138A4 Process for manufacturing crystalline calcium magnesium acetate. |
| 05/20/1992 | WO1992008686A1 Process for improving flow characteristics of crystalline ibuprofen |
| 05/20/1992 | EP0486452A2 Preparation of 2,2'-oxydisuccinate |
| 05/20/1992 | EP0486351A1 Method for the production of mixed ammonium-rare earth oxalates and their application to the production of rare earth oxides |
| 05/20/1992 | EP0486350A1 Method for the production of mixed ammonium-rare earth oxalates and their application to the production of rare earth oxides and rare earth oxides so produced |
| 05/20/1992 | EP0486291A1 Catalyst for oxidizing methacrolein and method for preparing methacrylic acid |
| 05/20/1992 | EP0486286A2 Process for the production of anhydrides and nitriles |
| 05/20/1992 | CA2055735A1 Removal of carbonyl impurities from a carbonylation process stream |
| 05/19/1992 | CA1301194C Process for selective chloration of phenolic compounds |
| 05/19/1992 | CA1301187C Process for the continuous fractionation of a mixture of fatty acids |
| 05/19/1992 | CA1301175C Substituted 2,3-naphthalenedicarboxaldehydes |
| 05/16/1992 | CA2095641A1 Process or the preparation of difluoromaleic anhydride and intermediate compounds produced thereby |
| 05/16/1992 | CA2055540A1 Preparation of 2,2'-oxydisuccinate |
| 05/15/1992 | CA2055395A1 Process for the production of anhydrides and nitriles |
| 05/14/1992 | WO1992007648A2 Electro-synthesis of alcohols and carboxylic acids from corresponding metal salts |
| 05/14/1992 | CA2055294A1 Process for the preparation of rare-earth and ammonium twin oxalates, and their use in preparing rare-earth oxides |
| 05/13/1992 | EP0485169A1 Polymerization inhibitor and inhibiting method for vinyl compound |
| 05/13/1992 | EP0484400A1 Continuous process for preparation of aqueous dispersions of metal soaps. |
| 05/13/1992 | CN1061022A Continuous process for simultaneous preparation of acetic acid and acetic anhydride |
| 05/13/1992 | CN1060972A Process and apparatus for removal of undeired components from aqueous feedstocks |
| 05/12/1992 | US5113016 By-product inhibition, discoloration inhibition |
| 05/12/1992 | US5113015 Recovery of acetic acid from methyl acetate |
| 05/12/1992 | US5113013 Process for preparing fluorine-containing organic compounds |
| 05/12/1992 | US5112993 Process for the preparation of difluoromaleic anhydride |
| 05/12/1992 | US5112992 Production of polycarboxylic acids with hafnium-activated cobalt catalyst |
| 05/12/1992 | US5112792 Nickel/silica catalyst and the preparation and use thereof |
| 05/12/1992 | CA1300642C2 Eicosatetraynoic - 5,8,11,14 acid preparation process |
| 05/12/1992 | CA1300641C Process for the preparation of aryloxyacetic acid |
| 05/12/1992 | CA1300636C Method for the production of alkenyl-succinic anhydrides |
| 05/12/1992 | CA1300632C Acetylene amines and their use as vasodilators and antihypertensives |
| 05/10/1992 | CA2055085A1 Polymerization inhibitor and inhibiting method for vinyl compound |
| 05/06/1992 | EP0484136A2 Production of hydrocarbon derivatives |
| 05/06/1992 | EP0484122A2 Method for obtaining high-purity cinnamic acid |
| 05/06/1992 | EP0484020A2 Process for purifying acetic acid and/or acetic anhydride |
| 05/06/1992 | EP0483831A2 Process for separating an organic acid or acids from an organic acid-containing solution |
| 05/06/1992 | EP0483645A2 Process for the preparation of homogeneous o-xylene-naphthalene-air mixtures for the production of phthalic anhydride |
| 05/06/1992 | EP0483536A2 Continuous process for the simultaneous preparation of acetic acid and acetic anhydride |
| 05/06/1992 | EP0483518A1 Method for the removal of metallic corrosion products from non-aqueous carbonylation reaction systems |
| 05/06/1992 | EP0455802A4 Process for the production of aromatic anhydrides and aromatic esters with superior color properties |
| 05/05/1992 | US5110984 Catalytic hydrogenation of m-carboxybenzaldehyde impurity; recycle of mother liquor from crystallization |
| 05/05/1992 | US5110983 Hexafluoroisopropyl-containing monomers, process for their preparation and their use |
| 05/05/1992 | US5110982 Catalytic oxidation of 2-alkyl-6-acylnaphthalene |
| 05/05/1992 | US5110965 Iron chelates from magnetite |
| 05/05/1992 | US5110949 Method of synthesizing leukotriene B4 and derivatives thereof |
| 05/01/1992 | CA2054147A1 Production of hydrocarbon derivatives |
| 05/01/1992 | CA2054025A1 Process for purifying acetic acid and/or acetic anhydride |
| 05/01/1992 | CA2052868A1 Process for removing metallic corrosion products from carbonylation reactions carried out under anhydrous conditions |
| 04/29/1992 | EP0483106A2 Process for preparing partially fluorinated tetracarboxylic acids |
| 04/29/1992 | EP0482787A2 Process for removing iodide compounds from carboxylic acids and/or their anhydrides |
| 04/29/1992 | EP0409903B1 Process for preparing polyunsaturated fatty acids |
| 04/29/1992 | CN1060651A Process and catalyst for production of ethylene and acetic acid |
| 04/29/1992 | CN1016456B Seal for rotatable shaft |
| 04/28/1992 | US5109021 Prostaglandin analogues, process for their preparation and pharmaceutical compositions containing them |
| 04/28/1992 | US5108974 Preparation of vanadium-phosophorus-oxide catalyst precursor |
| 04/28/1992 | US5108751 Cosmetic composition comprising 2-hydroxyalkenoic acids or a mixture thereof |
| 04/28/1992 | CA1299812C Preparation of pharmaceutical grade amino acid chelates |
| 04/22/1992 | EP0481253A2 p-Oxybenzoic acid derivatives, process for preparing them, and their use as medicaments |
| 04/21/1992 | US5107053 Catalytic hydrogenation of aryl-substituted unsaturated acid or ester; ibuprofen |
| 04/21/1992 | US5107049 Alkylating aromatic hydrocarbon with olefinic oligomer; zeolite catalyst; heat and oxygen resistant lubricants |
| 04/21/1992 | US5107029 Reacting dicarboxylic acid with aromatic compound using acid or anhydride catalyst |
| 04/21/1992 | US5107020 Method for producing purified trimesic acid |
| 04/21/1992 | US5107013 Using bromine acceptors, like alkylarenes and alkoxyarenes, in presence of Lewis acids |
| 04/21/1992 | US5106542 Complexing with urea; cooling, separation |
| 04/21/1992 | US5106541 Manganese compound catalyzed oligomerization reactions and products thereof |
| 04/21/1992 | CA1299195C Addition of hydrogen to carbon monoxide feed gas in producing acetic acid by carbonylation of methanol |
| 04/21/1992 | CA1299194C Preparation of 6-aminocaproic acid |
| 04/21/1992 | CA1299193C Anhydrous diluents for the propylene oxidation reaction to acrolein and acrolein oxidation to acrylic acid |
| 04/21/1992 | CA1299192C Method for production of 2-hydroxynaphthalene-6-carboxylic acid |
| 04/21/1992 | CA1299189C (phenylethenyl)phenylpropionic acid and its ester, and method for producing (benzoylphenyl)propionic acid or its ester |
| 04/21/1992 | CA1299182C Eicosatetraynamides and their use in pharmaceutical and cosmetic products |
| 04/20/1992 | WO1992006945A1 Metal carboxylates |
| 04/20/1992 | CA2094283A1 Metal carboxylates |
| 04/20/1992 | CA2053179A1 Process for removing iodide compounds from carboxylic acide and/or anhydrides |
| 04/20/1992 | CA2028031A1 Aryloxy alcoyl benzens, process for the preparation thereof and pharmaceutical compositions comprizing them |
| 04/16/1992 | WO1992006063A2 Carbonylation of allylic alcohols and synthesis of an ambergris fragrance compound |
| 04/15/1992 | EP0480594A2 Process and catalyst for the production of ethylene and acetic acid |
| 04/15/1992 | EP0480266A2 Perfluorinated polyimide, perfluorinated poly(amic acid), starting compounds therefor, and methods for preparing them |
| 04/15/1992 | EP0480077A1 Process for obtaining carnosic acid |
| 04/14/1992 | US5105004 Aromatic ethers |