| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 08/13/1998 | DE19705329A1 Dicarbonsäurekristallisate Dicarbonsäurekristallisate |
| 08/13/1998 | DE19705326A1 Selective oxidation of non-cyclic unsaturated hydrocarbon |
| 08/13/1998 | DE19637650C1 Recovery of liquid phthalic anhydride from reaction gas mixture |
| 08/12/1998 | EP0857713A1 Process for the preparation of 3-hydroxy- and 3-acetoxy-2-methylbenzoic acid |
| 08/12/1998 | EP0857712A1 Process for the preparation of malonic and alkylmalonic acids |
| 08/12/1998 | EP0857170A1 Method and apparatus for preparing purified terephthalic acid |
| 08/12/1998 | EP0763006B1 Recovery of carboxylic acid from organic solution that contains an amine and an extraction enhancer |
| 08/12/1998 | CA2228396A1 Method of controlling the quality of terephthalic acid |
| 08/11/1998 | US5792892 Bromination in the presence of aluminum chloride and bromine and chlorine |
| 08/11/1998 | US5792888 Process for phosgenation in the presence of acetonitrile |
| 08/11/1998 | US5792887 Noncatalytic monodecarboxylation of a halogen substituted terephthalic acid using a polar aprotic liquid medium |
| 08/11/1998 | US5792886 Methylation of 6-bromo-2-naphthol with methyl bromide to 2-bromo-6-methoxynaphthalene; forming grignard; reacting with a lower alkyl 2-bromopropionate |
| 08/11/1998 | US5792722 Roasting the catalyst comprising phosphorous-vanadium oxide in humid air results in fast catalyst activation and higher yield |
| 08/11/1998 | US5792719 Supported catalyst for gas-phase oxidation reactions |
| 08/11/1998 | CA2118386C Process for hydroxycarbonylation of butadiene |
| 08/06/1998 | WO1998033787A1 Process for the preparation of a carboxylic anhydride |
| 08/06/1998 | WO1998033759A1 Heterogeneous vapor phase carbonylation process |
| 08/06/1998 | WO1998033757A1 Method for preparing substituted anthraquinone and application to the preparation of rheins |
| 08/06/1998 | WO1998033398A1 A process for the production of chromium(iii) salts of short chain fatty acids for use in animals feeds |
| 08/06/1998 | WO1998019511A3 Method for the preparation of citalopram |
| 08/06/1998 | CA2278738A1 Heterogeneous vapor phase carbonylation process |
| 08/06/1998 | CA2278587A1 Process for the preparation of a carboxylic anhydride |
| 08/06/1998 | CA2251024A1 Method for preparing substituted anthraquinone and application to the preparation of rheins |
| 08/05/1998 | EP0856507A1 Process for the purification of alpha-, beta- or gamma-substituted carboxylic acids by electrodialysis |
| 08/05/1998 | EP0856343A1 Purifier and purifying method for polymerizable organic compounds |
| 08/05/1998 | EP0855996A1 Oxidation of aldehydes to carboxylic acids |
| 08/05/1998 | CN1189485A Purifier and purifying method for polymerizable organic compounds |
| 08/04/1998 | US5789616 Method for production of zinc acrylate |
| 08/04/1998 | US5789613 Using tri(alkyl or aryl) phosphite |
| 08/04/1998 | US5788895 Mass transfer in plate columns and apparatus for this purpose |
| 08/04/1998 | CA2145748C Method for refining acetic anhydride |
| 07/30/1998 | WO1998032727A1 Process for producing optically active benzylsuccinic acid and intermediate therefor |
| 07/30/1998 | WO1998032725A1 Process for the production of acetic acid |
| 07/30/1998 | CA2278012A1 Process for the production of acetic acid |
| 07/30/1998 | CA2225290A1 The purification of .alpha.,.beta. or .gamma.-substituted carboxylic acids |
| 07/29/1998 | EP0855376A1 Method for inhibiting polymerization of vinyl compounds |
| 07/29/1998 | EP0751927A4 Synthesis of compounds with predetermined chirality |
| 07/29/1998 | EP0723532B1 Process for recovering dicarboxylic acid with reduced impurities from polyester polymer |
| 07/29/1998 | CN1189154A 4-aryl-1-phenylalkyl-1,2,3,6-Tetrahydropyridines having neurotrophic and neuroprotective activity |
| 07/29/1998 | CN1039315C Process for production of purified terephthalic acid |
| 07/28/1998 | USRE35865 Reacting cyclohexanone derivative with peroxy compound |
| 07/28/1998 | US5786520 O-alkylation of phenolic compounds via rare earth orthophosphate catalysts |
| 07/28/1998 | US5786507 Process for the preparation of 3-phenylpropionic acid |
| 07/28/1998 | US5786494 Process for the synthesis of α-substituted acrylic acids and their application |
| 07/28/1998 | US5786380 Modified valproic acid |
| 07/28/1998 | US5785821 Process for the production of acrylic acid |
| 07/28/1998 | CA2149058C Enhanced oxidation of organic chemicals |
| 07/28/1998 | CA2117188C Process for preparation of cyclohexanedicarboxylic acid |
| 07/23/1998 | WO1998031678A1 Preparation of perylene-3,4-dicarboxylic anhydrides |
| 07/23/1998 | WO1998031653A1 Process for the recovery of polycarboxylic acids |
| 07/22/1998 | EP0854144A1 Preparation of perylen-3,4-dicarboxylacid anhydrides |
| 07/22/1998 | EP0854129A1 Process for the continuous separation by distillation of liquid mixtures containing (meth)acrylic acid as the main cut |
| 07/22/1998 | EP0854128A1 Process for the preparation of chloro-benzoyl chlorides |
| 07/22/1998 | EP0853977A1 Preparation of vanadium antimonate based catalysts using SnO2,nH20 |
| 07/22/1998 | EP0671975B1 Chiral adsorbents and preparation thereof as well as compounds on which the adsorbents are based and preparation of these compounds |
| 07/22/1998 | CN1188107A Process for synthesizing benzoic acids |
| 07/22/1998 | CN1188100A Method for preparing pyruvic acid and its calcium salt from lactic acid |
| 07/22/1998 | CN1188099A Process for preparation of acetic acid product comprising |
| 07/21/1998 | US5783738 Optically active diphosphines, preparation thereof according to a process for the resolution of the racemic mixture and use thereof |
| 07/21/1998 | US5783737 Process for the preparation of 3-carboxy-4-hydroxybenzaldehides and derivatives thereof |
| 07/21/1998 | US5783731 Removal of carbonyl impurities from a carbonylation process stream |
| 07/21/1998 | US5783724 Allyl esters of 2-norbornane acrylic acids and 2-norbornylidene propionic aicds and perfumery uses thereof |
| 07/21/1998 | US5783714 Mixing aliphatic carboxylic acid with controlled amounts of calcium hydroxide, then heating yields calcium salt free of excess calcium hydroxide(grit) |
| 07/21/1998 | US5783676 Reacting a carboxylic acid with a base to form a carboxylate salt which is then reacted with a water soluble rare earth salt to form a rare earth carboxylate |
| 07/21/1998 | US5783602 Leukotriene-B4 derivatives, process for their production and their use as pharmaceutical agents |
| 07/21/1998 | US5783514 Shell catalyst, a process for its production and its use |
| 07/16/1998 | WO1998030532A1 Woolgrease |
| 07/16/1998 | WO1998030529A2 Preparation of carboxylic compounds and their derivatives |
| 07/16/1998 | WO1998030528A2 Production of racemic 2-(6-methoxy-2-naphthyl)propionic acid or precursors thereof |
| 07/16/1998 | WO1998030522A1 Preparation of olefinic compounds and carboxylic derivatives thereof |
| 07/16/1998 | WO1998030329A1 Nitration or carboxylation catalysts |
| 07/16/1998 | DE19700990A1 Die ausbalancierte Decarboxylierung von aromatischen Polycarbonsäuren - eine einstufige Synthese von Perylen-3,4-dicarbonsäureanhydrid The balanced decarboxylation of aromatic polycarboxylic acids, - a one-step synthesis of perylene-3,4-dicarboxylic anhydride |
| 07/16/1998 | CA2277085A1 Preparation of carboxylic compounds and their derivatives |
| 07/16/1998 | CA2277083A1 Preparation of olefinic compounds and carboxylic derivatives thereof |
| 07/16/1998 | CA2276292A1 Production of racemic 2-(6-methoxy-2-naphthyl)propionic acid or precursors thereof |
| 07/15/1998 | EP0852576A1 Method for preparation of carboxylic acids |
| 07/15/1998 | EP0807099B1 Process for preparing nucleus-halogenated benzoyl chlorides |
| 07/15/1998 | CN1187807A Method for manufacture of products containing disalts of formic acid |
| 07/15/1998 | CN1187483A Iridium-catalysed carbonylation process for production of acetic acid |
| 07/15/1998 | CN1187482A Iridium-catalysed carbonylation process for production of acetic acid |
| 07/14/1998 | US5780704 Decomposing thermoplastic polymer of hydroxycarboxylic acid by contacting with alkaline solution, recovering said acid |
| 07/14/1998 | US5780700 Improving catalyst efficiency by controlling residence time, space velocity, temperature of reactants; regenerating catalyst |
| 07/14/1998 | US5780679 Countercurrent absorption using high boiling inert hydrophobic organic liquid |
| 07/14/1998 | US5780675 Noncytotoxic; saponification, cyclization, reduction, rehydration; catalytic hydrogenolysis |
| 07/14/1998 | US5780672 Process for the selective preparation of monofluoro derivatives |
| 07/14/1998 | US5780669 Selective dehalogenation process |
| 07/14/1998 | US5780662 Naphthyl and ether chain-containing carboxyl derivatives |
| 07/14/1998 | US5780276 Recovery of carboxylic acid from organic solution that contains an amine and an extraction enhancer |
| 07/14/1998 | US5779942 Long-chain dialkylmagnesium, its preparation process and applications |
| 07/14/1998 | CA2133365C Terephthalic acid production |
| 07/14/1998 | CA2130686C Process for the production of hydrocarbon partial oxidation products |
| 07/09/1998 | WO1998029379A1 Preparation of alpha, beta-unsaturated carboxylic acids and esters in the presence of an oxide of niobium as catalyst |
| 07/09/1998 | WO1998029378A1 Process for the production of aromatic acids |
| 07/09/1998 | WO1998029377A1 Process for producing acid chlorides having polyfluoroalkyl groups |
| 07/08/1998 | CN1186800A Iridium catalysed carbonylation process for production of carboxylic acid |
| 07/08/1998 | CN1186796A Method for preparing carbonyl compound |
| 07/08/1998 | CN1186795A Method for preparing aromatic compounds |
| 07/07/1998 | US5777181 2, 4, 5-trihalogeno- and 2, 3, 4, 5-tetrahalogenobenzene derivatives |
| 07/07/1998 | US5777179 Reacting hexafluoropropylene epoxide with carbonyl fluoride and perfluoroacetyl fluoride |
| 07/07/1998 | US5777161 Process for producing highly pure terephthalic acid by use of dispersion medium replacement apparatus |