| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 10/08/1997 | EP0781165A4 Improved high performance vpo catalyst and process of preparation thereof |
| 10/08/1997 | EP0652805B1 Aluminium oxide catalyst containing silver, and method of decomposing nitrous oxide |
| 10/08/1997 | CN1161686A Dehydration of acetic acid by azeotropic distillation in the prodn. of aromatic acid |
| 10/07/1997 | US5675021 Adsorption of water and free acid-containing hydrolysis by-products, dimerization of purified hydroxy acid |
| 10/07/1997 | US5674387 Useful for separation of underivatized enantiomers of nonsteroidal antiinflammatory agents |
| 10/02/1997 | WO1997035829A1 Method for preparing acetic acid and/or methyl acetate by methyl formate isomerisation |
| 10/02/1997 | WO1997035828A1 Method for preparing acetic acid and/or methyl acetate by isomerisation and carbonylation |
| 10/02/1997 | WO1997035827A1 Production of acetic acid from methane |
| 10/02/1997 | WO1997035826A1 Method for preparing carboxylic acids and/or esters thereof by isomerising esters |
| 10/02/1997 | WO1997035489A1 A process for obtaining phytic acid and lactic acid |
| 10/01/1997 | EP0798310A1 Improved process for the oxidation of sugars |
| 10/01/1997 | EP0797562A1 Crystallization of adipic acid |
| 10/01/1997 | EP0745062A4 Desorption process and apparatus |
| 10/01/1997 | CN1160708A Method for making alpha, beta-unsaturated-beta-trifluoromethyl carboxylates and related compounds |
| 10/01/1997 | CN1160707A Production of terephthalic acid with excellent optical properties through use of pure or nearly pure oxygen as oxidant in P-xylene oxidation |
| 10/01/1997 | CN1160706A Extraction method of unsaturated fatty acid from fish oil |
| 10/01/1997 | CN1160705A Technological process of preparing fatty acid with the side product from sebacid acid production |
| 09/30/1997 | US5672749 Process for preparing acetyl chloride |
| 09/30/1997 | US5672748 Process for preparing trifluoroacetyl fluoride |
| 09/30/1997 | US5672746 Antiproliferative and neurotrophic molecules |
| 09/30/1997 | US5672744 Process for the preparation of acetic acid |
| 09/30/1997 | US5672743 Process for the production of acetic acid |
| 09/30/1997 | US5672742 Process for producing α-(trifluoromethyl)arylacetic acid |
| 09/30/1997 | US5672732 Reacting in presence of carbon monoxide, an alcohol or water and an catalyst system comprising palladium compound, carboxylic acid and monodentate phosphine ligand to form pentenoic acid or esters with good selectivity |
| 09/30/1997 | US5672726 Method for separating and purifying α-linolenic acid from perilla oil |
| 09/30/1997 | US5672719 Process for the preparation of isobenzofurandiones |
| 09/30/1997 | CA2027522C Method for fluorode carboxylation |
| 09/25/1997 | WO1997034861A1 Process for the oxidation of di-, tri-, oligo- and polysaccharides into polyhydroxycarboxylic acids |
| 09/25/1997 | WO1997034860A1 A PROCESS FOR THE PREPARATION OF α-ARYLPROPIONIC ACIDS AND THE INTERMEDIATES THEREOF |
| 09/24/1997 | EP0796837A1 Process for producingan aromatic carboxylic acid |
| 09/24/1997 | EP0796238A1 Method of stabilizing polyunsaturated fatty acids and their application in therapy and cosmetics |
| 09/24/1997 | EP0796237A1 Preparation of pentenoic acid |
| 09/24/1997 | EP0643684B1 Method for removing iodine compound from acetic acid |
| 09/24/1997 | CN1160038A Process for production of terephthalic acid |
| 09/24/1997 | CN1160037A Method for separation and preparation of nervonic acid |
| 09/24/1997 | CN1160036A Improved process for producing organic acids |
| 09/23/1997 | USRE35615 Ion exchanging |
| 09/23/1997 | US5670700 Hydroformylation process |
| 09/23/1997 | US5670696 Alicyclic bifunctional compounds and processes for their preparation |
| 09/23/1997 | US5670685 Process for preparing carboxylates of polyoxyalkylene siloxanes |
| 09/23/1997 | US5670660 Process for collecting airborne anhydrides |
| 09/23/1997 | US5670659 Dehydration, anhydriding in the presence of acids and bases |
| 09/23/1997 | US5669964 Fluoralkycarboxylic acid and derivative thereof |
| 09/23/1997 | CA2007101C Process for the purification and recovery of the contaminated solution of catalyst produced on carbonylation of methanol and/or methyl acetate and/or dimethyl ether |
| 09/22/1997 | CA2200646A1 Optimization of water content in the oxygen-based oxidation of p-xylene |
| 09/18/1997 | WO1997033892A1 Process to prepare a multidentate phosphite compound |
| 09/17/1997 | EP0795534A1 Process for preparing calcium pyruvate and its hydrates |
| 09/17/1997 | EP0795529A1 Process for producing highly pure 2,6-dimethylnaphthalene |
| 09/17/1997 | EP0601177B1 Method for preparing aromatic carboxylic acids |
| 09/16/1997 | US5668261 Process for preparing carboxylates of alkylpolyglucosides |
| 09/16/1997 | US5668230 Olefin polymerization |
| 09/16/1997 | CA2019997C Process for preparing bromodifluoroacetylfluoride |
| 09/12/1997 | WO1997032571A1 Functionalized nanotubes |
| 09/11/1997 | DE19605683A1 Verfahren zur Trennung von Substanzen mittels einer geeigneten Membran A method for separating substances by means of a suitable membrane |
| 09/11/1997 | CA2199594A1 Process for preparing calcium pyruvate and its hydrates |
| 09/10/1997 | EP0794182A1 PROCESS FOR PRODUCING 2-($g(v)-ALKOXYCARBONYLALKANOYL)-4-BUTANOLIDE AND LONG-CHAIN $g(v)-HYDROXY CARBOXYLIC ACID |
| 09/10/1997 | EP0794151A1 Novel metal ion-exchanged phosphorusvanadium compound and solid acid catalyst using the compound |
| 09/10/1997 | EP0793643A1 Matrix metalloprotease inhibitors |
| 09/10/1997 | EP0673381A4 Homogeneous bimetallic hydroformylation catalysts and processes utilizing these catalysts for conducting hydroformylation reactions. |
| 09/10/1997 | EP0645365B1 Process for producing 2-fluoroisobutyric acid or ester thereof |
| 09/10/1997 | CN1159180A Benzoyl derivatives and synthesis thereof |
| 09/10/1997 | CN1158837A Manufacture of vitamin K1 |
| 09/10/1997 | CN1035819C A preparation process for lactone of 1R, cis-2,2-dimethyl-3-formyl-cyclopropane-1-carboxylic acid |
| 09/10/1997 | CN1035815C Improved process for recovery of purified terephthalic acid |
| 09/10/1997 | CN1035814C Process for production of dichloroacetic aic |
| 09/09/1997 | US5665323 Preparation of ammonium rare earth double oxalates and rare earth oxides produced therefrom |
| 09/04/1997 | WO1997031883A1 Process for preparing 1,6 hexane diol and caprolacton |
| 09/04/1997 | DE19707285A1 Phosgenierung von Säuren und/oder Anhydriden unter Druck zur Herstellung von Säurechloriden Phosgenation of acids and / or anhydrides under pressure for the preparation of acid chlorides |
| 09/04/1997 | DE19607954A1 Economical production of pure 1,6-hexane-diol and epsilon-capro-lactone from by-product of oxidation of cyclohexane |
| 09/03/1997 | EP0792867A2 Process for the purification of acrylic and methacrylic acid |
| 09/03/1997 | EP0792866A1 Process for production of acrylic acid |
| 09/03/1997 | EP0792865A1 Process for producing organic acids |
| 09/03/1997 | EP0792858A2 Process for the purification of 2,6-dimethylnaphthalene and its use in the production of 2,6-naphthalenedicarboxylic acid |
| 09/03/1997 | EP0792683A2 Tube and shell reactor system |
| 09/03/1997 | EP0792270A1 Natriuretic cyclic compounds |
| 09/03/1997 | EP0610384B1 Process for the preparation of fluorinated benzoic acids |
| 09/03/1997 | CN1158330A Method for concentrating gamma-linolenic acid in natural scabish oil |
| 09/03/1997 | CN1035763C Process for producing highly pure terephthalic acid |
| 09/03/1997 | CN1035762C Process for producing propenoic acid by homogenization, oxydation and dehydrogenation of propane, and propene oxydation, and appts. thereof |
| 09/02/1997 | US5663543 Method for producing a polyfluoropropionyl halide |
| 09/02/1997 | US5663430 Iridium, rhodium catalyst contamination |
| 09/02/1997 | US5663429 From methanon and carbon monoxide |
| 09/02/1997 | US5663428 Method for producing aromatic carboxylic acids |
| 09/02/1997 | US5663418 From the aldehyde, oxidation, esterification |
| 09/02/1997 | US5663388 Process for converting aldehydes to acids |
| 09/02/1997 | US5663114 Contains vanadium and silver; for vapor phase oxidation of a tetraalkylbenzene with a molecular oxygen containing gas |
| 09/02/1997 | US5662874 Mixing an oxalate ion precursor compound, a water soluble rare earth compound and an ammonium salt to form a double oxalate precipitate and separating |
| 09/02/1997 | US5662780 Process for purifying acetic acid |
| 09/02/1997 | US5662168 Process for modifying the water permeability of a subterranean formation |
| 09/02/1997 | CA1339425C Perfluoropolyethers containing a halogen different from fluorine and having an acid end group |
| 08/28/1997 | WO1997030963A1 Production of aromatic polycarboxylic acids |
| 08/28/1997 | WO1997030962A1 PROCESS FOR PREPARING FREE α-HYDROXY ACIDS FROM AMMONIUM SALTS THEREOF |
| 08/28/1997 | WO1997030957A1 Process for making dihalodifluoromethanes and their homologues |
| 08/28/1997 | WO1997030786A1 Palladium catalyst recovery |
| 08/27/1997 | EP0791393A1 Palladium catalyst recovery |
| 08/27/1997 | EP0790973A1 Method of preparing tartaric acid |
| 08/27/1997 | EP0790824A1 2,2-dichloroalkane carboxylic acids, process for preparing the same, medicament containing the same, and use thereof for treating insulin resistance |
| 08/27/1997 | EP0706577B1 An improved method of preparing glyoxylic acid/aminomethylphosphonic acid mixtures using a microbial double-transformant |
| 08/27/1997 | EP0630364B1 Hydroxy derivatives of cyclohexadiene |
| 08/27/1997 | EP0623104B1 Profen resolution |