| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 05/11/1999 | US5902898 Preparation of aralkanoic acids and esters using mixed ligand catalyst |
| 05/11/1999 | US5902889 Combining aqueous solution of olefinically unsaturated carboxylic acid salt with an oxidant selected from oxygen, air or hydroperoxides, a reducing agent such as hydrates or hydrazine, a metal ion activator, heating and neutralizing |
| 05/11/1999 | CA2028818C Production of alpha-(3-benzoylphenyl)-propionic acid derivative |
| 05/07/1999 | CA2252301A1 Preparation of acid chlorides |
| 05/06/1999 | WO1999021842A1 Herbicidal 4-benzoylisoxazoles derivatives |
| 05/06/1999 | EP0913386A1 Process for separating and purifying alkali metal salts of hydroxynaphthalenecarboxylic acids |
| 05/06/1999 | EP0913385A1 Process for the preparation of citric acid and/or citrates |
| 05/06/1999 | EP0912486A1 Process for purifying crude acrylic acid by crystallization |
| 05/06/1999 | EP0912485A1 Pentenoic acid hydroxycarbonylation method |
| 05/06/1999 | EP0912484A1 Method for purifying adipic acid in water |
| 05/06/1999 | EP0912483A1 A process for the recovery of dicarboxylic acid |
| 05/06/1999 | EP0912482A1 Production of aromatic hydroxycarboxylic acids |
| 05/06/1999 | EP0912480A1 Industrial process for the heterogeneously catalytic gas-phase oxidation of propane to form acroleine |
| 05/06/1999 | EP0912479A1 Process for the manufacture of oxygenates |
| 05/06/1999 | EP0912238A1 Production of powders |
| 05/06/1999 | DE19747791A1 Extraction of carboxylic acid from aqueous solution |
| 05/06/1999 | DE19747789A1 Extractant comprising liquid amide and alkylamine |
| 05/05/1999 | CN1216035A Method for preparing substd. anthraguinone and application to preparation of rheins |
| 05/05/1999 | CN1215718A Production method of acrylic acid |
| 05/05/1999 | CN1043228C Process for producing halogenophennoxyfatty acid derivs. by selective halogenation and halogenophenoxyfatty acid derivs. |
| 05/04/1999 | US5900506 Method of processing reaction mixtures obtained from the oxidation of cyclohexane |
| 05/04/1999 | US5900505 Reacting methanol, carbon monoxide and halide |
| 05/04/1999 | US5900504 Nickel-catalyzed carbonylation process |
| 05/04/1999 | US5900502 Fluorination process |
| 05/04/1999 | US5900490 Preparation of perylene-3, 4-Dicarboxylic acid anhydrides |
| 05/04/1999 | US5900434 Method for inhibiting the production of interleukin-1 or tumor necrosis factor-α by administering acanthoic acid |
| 05/04/1999 | US5900221 Process of preparing a solution of cesium and rubidium salts |
| 05/04/1999 | CA2056836C Production of tall oil |
| 05/04/1999 | CA2023954C Process for the optical resolution of 2-(3-benzoyl) phenylpropionic acid |
| 04/29/1999 | WO1999020594A1 Method for producing (meth)acrylic acid |
| 04/29/1999 | WO1999020593A1 Method for producing (meth)acrylic acid |
| 04/29/1999 | WO1999020592A1 Method for selectively producing acetic acid through the catalytic oxidation of ethane |
| 04/29/1999 | WO1999020590A1 Method of heterogeneous catalyzed vapor-phase oxidation of propane to acrolein and/or acrylic acid |
| 04/29/1999 | DE19746690A1 Recovery of (meth)acrylic acid from mixture containing higher boiling solvent |
| 04/29/1999 | DE19746689A1 Recovery of (meth)acrylic acid from mixture containing higher boiling solvent |
| 04/29/1999 | DE19746667A1 Heterogeneous catalyzed gas phase oxidation of propane to acrolein and acrylic acid |
| 04/28/1999 | EP0911313A1 A production method of acrylic acid |
| 04/28/1999 | EP0910560A1 Process for preparing 2-aryl-substituted indenes |
| 04/28/1999 | EP0910466A1 Methods and devices for oxidizing a hydrocarbon to form an acid |
| 04/28/1999 | EP0910340A1 Functionalized nanotubes |
| 04/28/1999 | EP0804406B1 Process for the preparation of 3-phenylpropionic acid |
| 04/28/1999 | CN1215350A Method for separating a catalyst by membrane electrodialysis |
| 04/28/1999 | CN1215044A Process for preparation of cis-3,2-dimethyl-2-(1'-hydroxy-2',2',2'-tribromoethyl)-cyclopropane-1-carboxylic acid |
| 04/28/1999 | CN1215043A Process for preparation of cis-dibromo chrysanthemic acid |
| 04/27/1999 | US5897994 Fatty acid fractionation for polyunsaturated fatty acid fraction enrichment |
| 04/27/1999 | US5897749 Continous withdrawal, superheating, and returning to still a portion of liquid distillation mixture in order to supply some or all of energy needed for distillation; polymerization inhibition |
| 04/27/1999 | CA2100800C Process for the production of 6e-leucotriene b4 and intermediary products of the said production process |
| 04/22/1999 | WO1999019290A2 Lactic acid processing; methods; arrangements; and, products |
| 04/22/1999 | WO1999019289A1 Recovery and recycle of catalyst components used in palladium-catalyzed preparation of arylcarboxylic acids |
| 04/22/1999 | DE19746210A1 Production of acrolein and acrylic acid by heterogeneous catalyzed gas phase oxidation of propane |
| 04/22/1999 | DE19745902A1 Selective production of acetic acid with high space-time yield |
| 04/22/1999 | CA2306425A1 Recovery and recycle of catalyst components used in palladium-catalyzed preparation of arylcarboxylic acids |
| 04/21/1999 | EP0909268A1 Method for preparing substituted anthraquinone and application to the preparation of rheins |
| 04/21/1999 | EP0862548A4 Method for the development of delta-lactones and hydroxy acids from unsaturated fatty acids and their clycerides |
| 04/21/1999 | CN1214670A Method for preparing acetic acid and/or methyl acetate by methyl formate isomerisation |
| 04/21/1999 | CN1214336A Process for production of carboxylic acid or anhydrides thereof |
| 04/20/1999 | US5895827 Process of recovering useful material through cracking of plastic material |
| 04/20/1999 | US5895820 Process for the production of trimellitic acid and process for the production of trimellitic acid anhydride |
| 04/20/1999 | US5895817 Method and apparatus for direct oxygen injection with a reactant stream into a fluidized bed reactor |
| 04/15/1999 | WO1999018062A1 Process for the purification of naphthalenedicarboxylic acid |
| 04/15/1999 | WO1999018061A1 Process to prepare a pentenoic acid anhydride |
| 04/15/1999 | WO1999018060A1 Process for the purification of naphthalenedicarboxylic acid |
| 04/15/1999 | WO1999018059A1 Preparation of 2,6-naphthalenedicarboxylic acid |
| 04/15/1999 | WO1999018058A1 Method for producing aldehydes and carboxylic acids by oxidizing primary alcohols |
| 04/15/1999 | WO1999018057A1 Preparation of diaryl ether by condensation reactions |
| 04/15/1999 | WO1998047849A3 Salt of boehmite alumina and processes for dyeing fibers, for treating a dye waste stream and for removing contaminants from a municipal waste treatment stream |
| 04/15/1999 | CA2305676A1 Method for producing aldehydes and carboxylic acids by oxidizing primary alcohols |
| 04/15/1999 | CA2305473A1 Process to prepare a pentenoic acid anhydride |
| 04/14/1999 | EP0908438A2 Process for the preparation of 2,3,4,5-tetrafluorobenzene derivatives |
| 04/14/1999 | EP0907630A1 Preparation of solid, powdery rare earth carboxylates by evaporation method |
| 04/13/1999 | CA2045553C Process for the preparation of vinyl ethers |
| 04/13/1999 | CA1340492C Novel naphthyridine-and quinoline-carboxylic acids as bacterial agents |
| 04/08/1999 | WO1999016743A1 A PROCESS FOR PREPARING o-(CARBOALKOXY) PHENYLMETHANESULFONYL CHLORIDE DERIVATIVES |
| 04/08/1999 | WO1999016738A1 Recovery of 2,6-naphthalene dicarboxylic acid from polyesters |
| 04/08/1999 | WO1999003814A3 Method for producing 3-hydroxy-2-methylbenzoic acid |
| 04/08/1999 | DE19843329A1 Preparation of methacrylic acid |
| 04/07/1999 | EP0906901A2 Process for producing propionic acid derivatives |
| 04/07/1999 | EP0906900A1 A process for preparing optically active 2-hydroxy-methyl-3-phenylpropionic acid |
| 04/07/1999 | EP0906465A1 Deinking process |
| 04/07/1999 | EP0906414A2 Process for the preparation of a granular microbial biomass and isolation of valuable compounds therefrom |
| 04/07/1999 | EP0906387A1 Process for making solid compositions comprising quaternary ester ammonium compounds and fatty acids |
| 04/07/1999 | EP0906274A1 Process for manufacturing sulphates of longer chain branched alkanols and alkoxylated alkanols |
| 04/07/1999 | EP0906264A1 Process for the production of alkaline metal salts and earth alkali metal salts of aryloxy-c1-c4-alkaline carboxylic |
| 04/07/1999 | EP0906263A1 Process for improving color of basic metal organic salts by employing c7-c17 alkyl glycidyl esters and stabilizing halogen-containing polymers therewith |
| 04/07/1999 | EP0906257A1 Mixtures containing monomers and stabilizers |
| 04/07/1999 | EP0804405B1 Process for producing optically active 2-halogen propionic acids |
| 04/06/1999 | US5892110 Reacting methyl acetate with carbon monoxide and hydrogen in presence of alkyl iodide and bifunctional catalyst comprising insoluble polymer having pendant quaternized phosphine groupsionically bonded to anionic group viii metal complexes |
| 04/06/1999 | US5892108 Method for packing with catalyst for synthesis of unsaturated aldehyde and unsaturated carboxylic acid |
| 04/06/1999 | US5892107 Dehydration of a sugar in presence of sulfuric acid |
| 04/06/1999 | US5892074 Synthesis of conjugated linoleic acid (CLA) |
| 04/06/1999 | US5892073 Process for preparation of 13-cis-retinoic acid |
| 04/06/1999 | US5892072 C 12-16-90% fatty acids and a process of making the same |
| 04/06/1999 | US5891921 Quaternary ammonium carboxylate and borate compositions and preparation thereof |
| 04/06/1999 | US5891626 Enzyme-linked analysis; using surfactant |
| 04/01/1999 | WO1999015489A1 Methods and devices for removing acetic acid from cyclohexane in the production of adipic acid |
| 04/01/1999 | WO1999002120A3 Compositions and methods for reversibly increasing permeability of biomembranes |
| 04/01/1999 | WO1999000512A3 Method for conversion of biomass to chemicals and fuels |
| 04/01/1999 | WO1999000351A8 Process for the recovery of naphthalenedicarboxylic acid from poly(alkylene naphthalenedicarboxylate) |
| 04/01/1999 | CA2304363A1 Methods and devices for removing acetic acid from cyclohexane in the production of adipic acid |
| 03/31/1999 | EP0905109A1 Fluorination with aminosulfur trifluorides |