| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 12/15/2004 | CN1554637A Separative purifying method for terephthalic acid |
| 12/15/2004 | CN1554636A Process for producing (meth) acrylic acid |
| 12/14/2004 | US6831195 Method for production of organic acid |
| 12/14/2004 | US6831184 Branching fatty acid/ester feedstocks via contacting with zeolite hydrogenation and isomerization catalysts |
| 12/09/2004 | WO2004105941A1 Process for producing catalyst for methacrylic acid production |
| 12/09/2004 | WO2004105938A2 Oxidation of propane to give acrylic acid using catalysts in a mixture of crystalline phases |
| 12/09/2004 | WO2004105935A1 Apparatus for and method of producing aromatic carboxylic acids |
| 12/09/2004 | WO2004067496A9 Crystalline form of nateglinide |
| 12/09/2004 | US20040249216 a multidentate organic phosphorous ligand for preparing alkenecarboxylic acid derivatives by carbonylation of conjugated dienes in the presence of a hydroxyl-containing compound in the liquid phase in the presence of a carbonylation catalyst that comprises a palladium compound |
| 12/09/2004 | US20040249208 Extraction process for removal of impurities from mother liquor in the synthesis of carboxylic acid |
| 12/09/2004 | US20040249207 Extraction process for removal of impurities from an aqueous mixture |
| 12/09/2004 | US20040249206 Method for the purification of a-hydroxy acids on an industrial scale |
| 12/09/2004 | US20040249204 Ethane oxidation catalyst and process utilising the catalyst |
| 12/09/2004 | US20040249203 For improving life of a catalyst packed inside the reaction tubes and for preventing yield reduction of a target product |
| 12/09/2004 | US20040249202 Method for production of (meth) acrylic acid |
| 12/09/2004 | US20040249201 Method for production of acrylic acid |
| 12/09/2004 | US20040249200 Method for production of acrylic acid |
| 12/09/2004 | US20040249199 Introducing an acrylic acid-containing gas obtaining by a reaction of catalytic gas phase oxidation of raw material of acrylic acid into an absorption column; distilling the acrylic acid-containing solution without using an azeotropic solvent; melt crystallizing |
| 12/09/2004 | US20040249197 Method for producing saturated alcohols, ketones, aldehydes and carboxylic acids |
| 12/09/2004 | US20040249196 Heterogeneously catalyzed partial gas phase oxidation of acrolein to acrylic acid |
| 12/09/2004 | US20040249183 Preparation of catalytically active multielement oxide materials which contain at least one of the elements Nb and W and the elements Mo, V and Cu |
| 12/09/2004 | US20040249000 using a fixed bed multipipe type reactor having reaction tubes filled with a catalyst having two or more catalyst layers having different catalytic activities from each other in a direction of the oxidation reaction; formation of hot spots in the catalyst are prevented |
| 12/09/2004 | US20040248919 Insulin sensitizers which do not increase triglyceride levels or suppress thyroid hormone axis; such as 7-[3,5-di-tert-butyl-2-(2,2-difluoroethoxy)-phenyl]-4-fluoro-3-methyl-octa-2,4,6-trienoic acid; synthesis; retinoid X receptor (rxr) |
| 12/09/2004 | US20040245176 Recovery of a metal catalyst from an oxidizer purge stream using a pressure filter; combining water with a mother liquor to recover the catalyst; and single stage solvent extraction to produce an extract stream of organic impurities and a raffinate stream of the metal catalyst. |
| 12/09/2004 | US20040244536 Extraction process for removal of impurities from mother liquor in the synthesis of carboxylic acid |
| 12/09/2004 | DE10330217B3 Production of metal salts of short-chain unsaturated carboxylic acids, e.g. useful in coatings and rubber materials, comprises reacting a metal alkoxide with an alkenoic acid or maleic acid in the presence of oxygen |
| 12/09/2004 | DE10323818A1 Katalysatorsysteme zur Herstellung von Phthalsäureanhydrid A catalyst system for preparing phthalic anhydride |
| 12/09/2004 | DE10323817A1 Verfahren zur Herstellung von Phthalsäureanhydrid A process for preparing phthalic anhydride |
| 12/09/2004 | DE10323461A1 Herstellung von Aldehyden, Carbonsäuren und/oder Carbonsäureanhydriden mittels Vanadiumoxid, Titandioxid und Antimonoxid enthaltender Katalysatoren Preparing aldehydes, carboxylic acids and / or carboxylic anhydrides by means of vanadium oxide, titanium dioxide and antimony oxide-containing catalysts |
| 12/09/2004 | DE10319917A1 Verfahren zur selektiven Kohlenhydrat-Oxidation unter Verwendung geträgerter Gold-Katalysatoren Process for the selective carbohydrate oxidation using a supported gold catalysts |
| 12/08/2004 | EP1484310A2 Method for production of acrylic acid |
| 12/08/2004 | EP1484309A1 Method for production of acrylic acid |
| 12/08/2004 | EP1484308A1 Method for production of acrylic acid |
| 12/08/2004 | EP1484307A1 Extraction process for removal of impurities from mother liquor in the synthesis of carboxylic acid |
| 12/08/2004 | EP1484306A1 Extraction process for removal of impurities from mother liquor in the synthesis of carboxylic acid |
| 12/08/2004 | EP1484305A1 Extraction process for removal of impurities from an aqueous mixture |
| 12/08/2004 | EP1484303A2 Method for production of (meth)acrylic acid |
| 12/08/2004 | EP1484302A1 Process for producing (meth)acrylic acid |
| 12/08/2004 | EP1484299A1 Process for catalytic vapor phase oxidation |
| 12/08/2004 | EP1484104A1 Method and apparatus for controlling feed of gaseous reaction component |
| 12/08/2004 | EP1286763B1 Counterflow reactor with a bundle of contact tubes |
| 12/08/2004 | EP1230205B1 Method for producing compounds of the valproinic acid |
| 12/08/2004 | EP0938378B1 Catalysts for the oxidation of ethane to acetic acid, processes of making same and processes of using same |
| 12/08/2004 | CN1552714A 2-substituted benzyl-5,7-dihydrocarbyl-3,7-dihydro pyrroline [2,3-d] pyromidine-4-one derivative ,its preparation and medicinal use |
| 12/08/2004 | CN1552688A Process for production of (meth)acrylic compounds |
| 12/08/2004 | CN1552687A Refining method for long-chain biatomic acid |
| 12/08/2004 | CN1178893C Process for inhibiting polymerizatino of easy polymerized compounds |
| 12/08/2004 | CN1178892C Process for purifying propenoic acid |
| 12/08/2004 | CN1178891C Refining method for (methyl) propenoic acid and/or its ester |
| 12/08/2004 | CN1178746C Catalytic composition for carbonylation including iridium and pyridine polymers |
| 12/07/2004 | US6828335 Oxazole or thiazole-ethyl-oxy-indane acetic acid derivatives; useful for the treatment of diseases such as diabetes, obesity, hyperlipidemia and atherosclerosis |
| 12/07/2004 | CA2156734C Ozonide reducing agent |
| 12/05/2004 | CA2467002A1 Extraction process for removal of impurities from an aqueous mixture obtained from the mother liquor generated in the synthesis of carboxylic acid |
| 12/02/2004 | WO2004103945A1 A purification process of crude terephthalic acid in a post oxidation zone by the addition of steam |
| 12/02/2004 | WO2004103944A1 Method for producing phthalic anhydride |
| 12/02/2004 | WO2004103943A1 Production of aldehydes, carboxylic acids, and/or carboxylic acid anhydrides by means of catalysts containing vanadium oxide, titanium dioxide, and antimony oxide |
| 12/02/2004 | WO2004103942A1 Process for the hydrocarboxylation of ethylenically unsaturated carboxylic acids |
| 12/02/2004 | WO2004103561A1 Three-layered or four-layered catalyst systems for producing phthalic anhydride |
| 12/02/2004 | WO2004103557A1 Phoshorus/vanadium catalyst preparation |
| 12/02/2004 | WO2004103074A1 Copper salts of organic acids and use thereof as fungicides |
| 12/02/2004 | WO2004087631A3 A process for the recovery of citric acid |
| 12/02/2004 | WO2004078849A3 Lubricant compositions containing an overbased amorphous alkaline earth metal salt as a metal protectant |
| 12/02/2004 | WO2004076053A3 Chemical process for the preparation of intermediates to obtain n-formyl hydroxylamine compounds |
| 12/02/2004 | US20040242929 Process for production of acid anhydride |
| 12/02/2004 | US20040242927 Crystallization; dehydration; storage stability |
| 12/02/2004 | US20040242926 Heterogeneous catalysis over fixed catalyst bed whose active composition is at least one multimetal oxide comprising the elements molybdenum, iron, and bismuth |
| 12/02/2004 | US20040242925 Method for producing methacrylic acid from isobutane |
| 12/02/2004 | US20040242924 makes possible the preparation of anhydrous carboxylic acids and thus allows the handling of less corrosive media and the use of less expensive materials of construction and also offers increasing safety as a result of the reduced corrosion |
| 12/02/2004 | US20040242923 Polybenzimidazoles, polybenzoxazoles, polybenzothiazoles; heat resistance, low dielectrics |
| 12/02/2004 | US20040242922 Oxidation of cyclohexane to adipic acid |
| 12/02/2004 | US20040242921 Resolution of racemic mixtures using an amine |
| 12/02/2004 | US20040242910 Polyol fatty acid polyesters process and polyurethanes therefrom |
| 12/02/2004 | US20040242908 Reacting an organometallic compound with fatty acid; stabilization of vinyl polymers |
| 12/02/2004 | US20040242828 Ozonolysis; reduction to phenolic compounds and aldehydes ; using transition metal catalyst and reducing sugar; adhesive for particle board |
| 12/02/2004 | US20040242826 Stability; mixing in multiple chemical reactor; supplying to purification vessel |
| 12/02/2004 | US20040242693 Adding alkali to an aqueous solution of optically active mandelic acid and at least one mineral acid; crystallizing optically active mandelic acid from the aqueous solution |
| 12/02/2004 | US20040242690 Method for preparing polyprenyl compounds |
| 12/02/2004 | US20040241059 Prevent gas accumulation under plates |
| 12/02/2004 | DE10347664A1 Separation of acrylic acid from liquid mixture, for use as monomer, by rectification in column in presence of diacrylic acid as polymerization inhibitor in upper part of column |
| 12/02/2004 | DE10321733A1 Verfahren zur Herstellung von ameisensauren Formiaten A process for preparing acid formates |
| 12/02/2004 | CA2526348A1 Process for the carbonylation of a conjugated diene |
| 12/02/2004 | CA2526346A1 Process for the hydrocarboxylation of ethylenically unsaturated carboxylic acids |
| 12/02/2004 | CA2522440A1 A purification process of crude terephthalic acid in a post oxidation zone by the addition of steam |
| 12/01/2004 | EP1481961A1 Process for producing (r)-3-hydroxy-3-(2-phenylethyl)hexanoic acid and its intermediate |
| 12/01/2004 | EP1481960A1 Process for production of optically active 2-halogeno- carboxylic acids |
| 12/01/2004 | EP1481959A1 Process for the preparation of lactones and aromatic hydroxycarboxylic acids |
| 12/01/2004 | EP1481958A1 Production of organic compounds which are low in fluoride |
| 12/01/2004 | EP1481724A1 Reaction method using microreactor |
| 12/01/2004 | EP1480937A2 Method for producing 2-hydroxyisobutyric acid and methacrylic acid from acetone cyanohydrin |
| 12/01/2004 | EP1480936A2 Process for the preparation of acitretin |
| 12/01/2004 | EP1480928A1 Alkene separation process |
| 12/01/2004 | EP1200394A4 Process for preparing acids via alpha-chloroepoxy esters |
| 12/01/2004 | EP1173403B1 Salts of asiatic and madecassic acid suitable for the preparation of pharmaceutical and cosmetic compositions |
| 12/01/2004 | CN1551865A Process for the production of 2,6-naphthalenedicarboxylic acid |
| 12/01/2004 | CN1550488A Method for washing and removing easy polymerizing compounds |
| 12/01/2004 | CN1550487A Method for distilling (meth)acrylic acid |
| 12/01/2004 | CN1550486A Method for stopping running of distillation tower |
| 12/01/2004 | CN1550485A Method for distilling (meth)acrylic acid |
| 12/01/2004 | CN1550483A Method for distilling (meth)acrylic acid and/or the ester thereof |
| 12/01/2004 | CN1550480A Method for manufacturing polymeriable substance |