| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 04/02/2003 | CN1406920A Maleicanhydride preparation |
| 04/02/2003 | CN1104406C Rhodium calayst for coordination of quarternarized copolymers |
| 04/02/2003 | CN1104279C Preparation of o-phthalic acid anhydride and Ti-V-Cs contained coating catalyst |
| 04/01/2003 | US6541675 2,4-dichlodro-5-fluoro-1,3-dimethylybenzene |
| 04/01/2003 | US6541666 Process for the co-production of acetic anhydride and acetic acid |
| 04/01/2003 | US6541665 Method for purifying acrylic acid or methacrylic acid by crystallization and distillation |
| 04/01/2003 | US6541664 Reaction gas starting mixture comprising propane, molecular oxygen is passed at from 300-500 degrees C over fixed-bed catalyst which comprises two catalyst beds arranged spatially in succession, comprising multimetal oxides |
| 04/01/2003 | US6541662 Process for producing a hydrogenation product of an aromatic carboxylic acid |
| 04/01/2003 | US6540881 Method for refining (meth)acrylic acid |
| 04/01/2003 | CA2070551C Polymerization inhibitors for acrylic acids and esters |
| 03/27/2003 | WO2003024912A1 Method for making adipic acid crystals and resulting crystals |
| 03/27/2003 | WO2003024911A1 METHOD FOR PREPARING α-(PHENYL)CINNAMIC ACIDS AND/OR DERIVATIVES THEREOF AND THEIR USE IN A COSMETIC COMPOSITION |
| 03/27/2003 | WO2002090299A3 Method for the production of a purified melt of at least one monomer |
| 03/27/2003 | US20030060661 Method for the purification of a crude acrylic acid melt |
| 03/27/2003 | US20030060660 Method for carbonylation of lower alkyl alcohols using tungsten promoted group VIII catalyst |
| 03/27/2003 | US20030060659 Producing acrylic acid through vapor-phase catalytic oxidation of acrolein- containing gas using a shell-and-tube type fixed bed reactor |
| 03/27/2003 | US20030060658 Cleaving the polyester in the presence of of a secondary or tertiary aliphatic or alicyclic nitrogen- or oxygen- or nitrogen- and oxygen-containing amine or an aliphatic-aromatic substituted amine, acting as catalyst to form sorbic acid |
| 03/27/2003 | US20030059953 Preparing library of chemical compositions; generate reaction mixture, expose to reaction zones, recover library |
| 03/26/2003 | EP1295861A2 Calix(6)arenes, process for their preparation and their application |
| 03/26/2003 | EP1295860A2 Process for the preparation of sorbic acid by thermal decomposition |
| 03/26/2003 | EP1295636A2 Process for producing acrylic acid |
| 03/26/2003 | EP1295590A2 Two-component agent with a temporary pH gradient and process for treating hair |
| 03/26/2003 | EP1294672A1 Method for producing propylene hydroformylation products and acrylic acid and/or acrolein |
| 03/26/2003 | EP1091923B1 Method for purifying acrylic acid or methacrylic acid by crystallization and distillation |
| 03/26/2003 | EP1078921B1 Novel intermediates and processes for the preparation of optically active octanoic acid derivatives |
| 03/26/2003 | EP1068173A4 Recovery of acrylic acid from process or waste water streams |
| 03/26/2003 | EP1007499B1 High productivity process to produce maleic anhydride from n-buthane |
| 03/26/2003 | CN1406220A Facility and method for the production of anhydrous formic acid |
| 03/26/2003 | CN1405138A Method for extracting citric acid |
| 03/26/2003 | CN1405137A Method for separating acetic acid and water by complexation extraction and rectification |
| 03/26/2003 | CN1103749C Treatment of effluent streams containing organic acids |
| 03/26/2003 | CN1103632C Shell catalyst for producing acetic acid by gas phase oxidation of unsaturated C4 hydrocarbons |
| 03/26/2003 | CN1103620C Crystallizing method |
| 03/25/2003 | US6538164 Optionally pretreating aqueous solution, mixing stripping agent with solution, separating volatile compounds from solids present in solution by rapid separation, isolating volatile compound from vapor product |
| 03/25/2003 | US6538156 Method for purifying adipic acid by crystallization |
| 03/25/2003 | US6538154 Condensing aldehydes with carboxylic anhydrides in the presence of a catalyst, wherein catalysts, or catalyst mixtures, comprise iron(III) salts to produce cinnamic esters and/or cinnamic acids |
| 03/25/2003 | US6538153 Method of synthesis of water soluble fullerene polyacids using a macrocyclic malonate reactant |
| 03/25/2003 | US6537944 Tungsten promoted catalyst for carbonylation of lower alkyl alcohols |
| 03/25/2003 | CA2234319C Fluoro-substituted adamantane derivatives |
| 03/20/2003 | WO2003022792A1 One step process for producing dicarboxylic acids |
| 03/20/2003 | WO2003022791A1 Process for the preparation of 2,6-naphthalenedicarboxylic acid |
| 03/20/2003 | WO2003022787A1 Method for preparing unsaturated fatty hydroxy-acids and esters thereof, their use in pharmaceutical and/or cosmetic compositions |
| 03/20/2003 | WO2003022418A1 Reactor arrangement for carrying out catalytic gas phase reactions, especially to obtain phthalic acid anhydride |
| 03/20/2003 | WO2002064807A3 Method for producing $g(g)-linolenic acids from a ciliate culture by adding suitable precursor molecules to said culture medium |
| 03/20/2003 | US20030055285 Process for the preparation of trifiuoromethyl-substituted biphenylcarboxylic acids and novel trichloromethyl-and trifluoromethyl-substituted biphenylcarbonitriles |
| 03/20/2003 | US20030055284 Process for producing a high purity aromatic polycarboxylic acid |
| 03/20/2003 | US20030055271 Oxidation of 5-(hydroxymethyl) furfural to 2,5-diformylfuran and subsequent decarbonylation to unsubstituted furan |
| 03/20/2003 | US20030055253 Phospor, arsenic and antimony compounds based upon diaryl-anellated diaryl-anellated bicyclo'2.2.n! parent substances and catalysts containing same |
| 03/20/2003 | US20030054951 Tin promoted iridium catalyst for carbonylation of lower alkyl alcohols |
| 03/20/2003 | US20030054950 Tungsten promoted catalyst for carbonylation of lower alkyl alcohols |
| 03/20/2003 | CA2459760A1 Method for preparing unsaturated fatty hydroxy-acids and esters thereof, their use in pharmaceutical and/or cosmetic compositions |
| 03/19/2003 | EP1293495A1 Process for the preparation of bromoisophthalic acid compounds |
| 03/19/2003 | EP1292559A2 Two stage process for the production of unsaturated carboxylic acids by oxidation of lower unsaturated hydrocarbons |
| 03/19/2003 | EP1292558A2 The method of chemical recycling of polyethylene terephthalate waste |
| 03/19/2003 | EP1292382A2 Tubular reactor with gas injector for gas phase catalytic reactions |
| 03/19/2003 | EP1025075B1 Method for selectively producing acetic acid through the catalytic oxidation of ethane |
| 03/19/2003 | CN1403435A Prepn process of magnesium naphthenate with superhigh base number |
| 03/19/2003 | CN1103331C Process for extracting pyruvic acid from fermented liquid of pyruvic acid and preparing sodium pyrouvate |
| 03/19/2003 | CN1103330C Process for synthesizing acetic acid in heterogenous catalysis system |
| 03/19/2003 | CN1103245C Method for producing vanadium phosphorus oxide catalyst |
| 03/18/2003 | US6534680 Adding to solution containing at least one dicarboxylic acid, before or during crystallization, at least one high molecular weight anionic polyelectrolyte |
| 03/18/2003 | US6534679 From fermentation broth |
| 03/18/2003 | US6534678 Process for producing tartaric acid from a raw material containing potassium hydrogentartrate |
| 03/18/2003 | US6534677 Non-crushable, non-friable, non-breakable carbon catalyst supports |
| 03/18/2003 | US6534676 Method to treat chronic heart failure and/or elevated cholesterol levels using 3,5-diiodothyropropionic acid and method to prepare same |
| 03/18/2003 | US6534258 Method for producing grains of aliphatic acid silver salt and thermally processed image recording material |
| 03/13/2003 | WO2003020860A2 Methods for treating deodorizer distillate |
| 03/13/2003 | WO2003020859A2 Method for hardening unsaturated fatty substances |
| 03/13/2003 | WO2003020684A1 (alpha)-haloenamine reagents |
| 03/13/2003 | WO2003020680A1 Method for producing aromatic dicarboxylic acid |
| 03/13/2003 | WO2002094925A3 Shelf stable haze free liquids of overbased alkaline earth metal salts, processes and stabilizing halogen-containing polymers therewith |
| 03/13/2003 | US20030050506 Making anhydrous formic acid by hydrolysis of methyl formate, where a liquid carboxamide (e.g. N,N-dibutylformamide) is used as extractant and as washing liquid for the offgases produced in the process |
| 03/13/2003 | US20030050505 Rhodium containing solutions |
| 03/13/2003 | US20030050504 Process for the preparation of an aromatic carboxylic acid |
| 03/13/2003 | US20030050491 Reacting the starting material with zinc oxide to form a zinc soap, heating the zinc soap, distilling the unsaponifiable materials from the soap, cooling the purified soap, adding a neutralizing acid and distilling the purified fatty acid |
| 03/13/2003 | US20030050490 Shelf stable haze free liquids of overbased alkaline earth metal salts, processes and stabilizing halogen-containing polymers therewith |
| 03/13/2003 | US20030049284 Method of increasing the solubility of alphahydrocarboxilic salts, and products obtained by the method |
| 03/13/2003 | CA2458859A1 (alpha)-haloenamine reagents |
| 03/12/2003 | EP1289922A2 Method for isolating polymethyl alkanoic acids and for the disposal of the resulting wastes |
| 03/12/2003 | EP1289920A2 Method for the production of acrolein or acrylic acid or the mixture thereof from propane |
| 03/12/2003 | EP1289919A2 Method for producing acrolein and/or acrylic acid |
| 03/12/2003 | EP1289640A1 Method for optimising a production increase operation |
| 03/12/2003 | EP1289517A2 Pharmaceutical compositions comprising cannabidiol derivatives |
| 03/12/2003 | CN1402701A Method for production of formic acid |
| 03/12/2003 | CN1401624A Process for recovery of diacid ester from waste lye from preparation of caprolactam |
| 03/12/2003 | CN1401623A Process and apparatus for purifying raw lactic acid |
| 03/12/2003 | CN1102924C Process for preparation of alkylated aroamtic carboxylic acids and acyl halides |
| 03/11/2003 | US6531634 Non-hazardous oxidative neutralization of aldehydes |
| 03/11/2003 | US6531631 High selectivity; mixed metal oxides |
| 03/11/2003 | US6531630 Bimodal acetic acid manufacture |
| 03/11/2003 | US6531597 Reacting a halo substituted benzene with a ketone to form a hydroxyalkyl benzene that is carbonylated with a strong acid |
| 03/11/2003 | US6531596 S(-)-2-methoxy-3-(4-(2-(phenoxazin-10-yl)methoxy) phenyl)propionic acid; benzylating p-hydroxybenzaldehyde or tyrosine; reaction with phenoxazinyl mesylate |
| 03/11/2003 | CA2108269C Process for preparation of crude terephthalic acid suitable for reduction to prepare purified terephthalic acid |
| 03/06/2003 | WO2003018728A1 Linear compounds containing phenolic and salicylic units |
| 03/06/2003 | WO2003018552A2 Aromatic and heteroaromatic acid halides for synthesizing polyamides |
| 03/06/2003 | WO2003018524A1 Vapor phase carbonylation process using iridium-gold co-catalysts |
| 03/06/2003 | WO2003018480A1 Method for the preparation of lactic acid and calcium sulphate dihydrate |
| 03/06/2003 | WO2001090062A3 Method for the production of trifluoroethoxy-substituted benzoic acids |
| 03/06/2003 | US20030045754 Process for the preparation of diphenyl ether compounds |
| 03/06/2003 | US20030045751 Method for producing carboxylic acid by alcohol oxidation |