| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 01/30/2001 | US6180821 Integrated process for the production of vinyl acetate and/or acetic acid using a fluidized bed |
| 01/30/2001 | US6180819 Process for producing butyl acrylate |
| 01/30/2001 | US6180165 Substantially light-insensitive thermographic recording materials with improved stability |
| 01/30/2001 | US6180071 Process for recovering rhodium catalyst |
| 01/30/2001 | US6179970 Process for the preparation of fluoro compounds from the corresponding amines |
| 01/30/2001 | US6179966 Subjecting an acrylic acid-containing aqueous solution obtained by catalytic vapor phase oxidation of propylene and/or acrolein to azeotropic dehydration to separate acrylic acid |
| 01/30/2001 | CA2141789C Process for preparing phenylterephthalic acid |
| 01/25/2001 | WO2001005797A1 Titanium derived compounds, preparation and use thereof |
| 01/25/2001 | WO2001005796A2 Aluminum compounds and process of making the same |
| 01/25/2001 | WO2001005739A1 Process for the preparation of 5- and/or 6-substituted-2-hydroxybenzoic acid esters |
| 01/25/2001 | WO2001005738A1 Method for preparing a carboxylic acid |
| 01/25/2001 | WO2001005737A1 Method for preparing a carboxylic acid |
| 01/25/2001 | WO2001005710A1 Method for recovering fluorinated emulsifiers from aqueous phases |
| 01/25/2001 | WO2000064555A3 Solvent extraction process |
| 01/25/2001 | DE19934168A1 Column chromatography separation process involves producing an eluant containing low. mol. wt. molecules using an apparatus including a pump, a separation column and a heat exchanger |
| 01/25/2001 | CA2379931A1 Process for the recovery of fluorinated emulsifiers from aqueous phases |
| 01/24/2001 | EP1070700A2 Process for preparing and purifying acrylic acid from propylene having improved capacity |
| 01/24/2001 | EP1070042A2 Process for the preparation of hpb esters |
| 01/24/2001 | EP1070040A1 Oxidation process using periodic acid |
| 01/24/2001 | EP1070039A1 Oxidation process using tempo |
| 01/24/2001 | EP1069948A1 Multi-metal oxide materials with a two-phase structure |
| 01/24/2001 | EP1069945A1 Catalyst and process for the oxidation of ethane and/or ethylene |
| 01/24/2001 | EP0752915B1 Catalyst for vapor phase oxidation of alkane hydrocarbons |
| 01/24/2001 | CN1281427A Process for preparing pentenoic acid anhydride |
| 01/24/2001 | CN1280979A Method for producing phthalic anhydride |
| 01/24/2001 | CN1061029C Process for producing tetrafluorophthalic anhydride |
| 01/23/2001 | US6177579 Process for the preparation of 13-cis-retinoic acid |
| 01/23/2001 | US6177053 Catalyst precipitation |
| 01/21/2001 | CA2300773A1 Polyvalent metal salts of salicylic acid resin and process for the preparation thereof |
| 01/18/2001 | WO2001004337A1 Separation and purification of carboxylic acids from fermentation broths |
| 01/18/2001 | WO2001004080A1 Process for obtaining acyl halide |
| 01/18/2001 | WO2001004079A1 Vapor phase catalytic oxidation of propylene to acrylic acid |
| 01/18/2001 | WO2001003832A1 Method of producing monolithic oxidation catalysts and their use in gas phase oxidation of carbohydrates |
| 01/18/2001 | WO2001003688A2 Treatment of cyclooxygenase-2 mediated disorders using conjugated fatty acid compounds |
| 01/18/2001 | DE19956509A1 Inhibitor composition for (meth)acrylic acid stabilization comprises nitroxyl radical(s) (derivative) and a phenothiazine(s) and/or phenothiazine derivative(s) |
| 01/18/2001 | DE19954582A1 Stabilization of radically polymerizable ethylenically unsaturated monomer(s) comprises adding solution of stable N-oxy radical(s) in inert solvent |
| 01/18/2001 | DE19933696A1 Verfahren zur Rückgewinnung fluorierter Emulgatoren aus wässrigen Phasen A process for the recovery of fluorinated emulsifiers from aqueous phases |
| 01/18/2001 | DE19932771A1 Verfahren zur Eluierung fluorierter Emulgatoren Process for the elution of fluorinated emulsifiers |
| 01/18/2001 | DE19931902A1 Verfahren zur Herstellung von monolithischen Oxidationskatalysatoren und deren Verwendung bei der Gasphasenoxidation von Kohlenwasserstoffen A process for the production of monolithic oxidation catalysts and their use in the gas-phase oxidation of hydrocarbons |
| 01/18/2001 | DE19930893A1 Use of highly ordered proteins charged with island-shaped clusters and a catalytically active metal as support fixing catalyst for chemical reactions, particularly nitro group and carbon multiple bond hydration |
| 01/17/2001 | EP1069468A1 A method for preparing non-photosensitive fatty acid silver salt grains and an apparatus for preparing the same |
| 01/17/2001 | EP1069078A2 Method of elution of fluorinated emulgators |
| 01/17/2001 | EP1068174A1 Method for producing acrylic acid and acrylic acid esters |
| 01/17/2001 | EP1068173A1 Recovery of acrylic acid from process or waste water streams |
| 01/17/2001 | EP1067995A1 Method for separating vaporous phthalic acid anhydride from a gas stream |
| 01/17/2001 | CN1280557A Process to separate rhodium from an organic mixture |
| 01/17/2001 | CN1280519A Method and device for global warming prevention |
| 01/17/2001 | CN1280121A Prcess for synthesizing royal jelly acid |
| 01/17/2001 | CN1280120A Process for preparing sodium diacetate |
| 01/17/2001 | CN1280119A Method for producing carboxylic acid and alcohol |
| 01/17/2001 | CN1280116A Method and catalyst for preparing oxide containing two carbon atoms from synthetic gas |
| 01/17/2001 | CN1280036A Catalyst for producing unsaturated aldehyde and unsaturated carboxylic acid and its use |
| 01/17/2001 | CN1060758C Method for recovering useful materials from saponified waste lye |
| 01/16/2001 | US6175043 Separating the hydroformylation reaction products in the polar phase solvent from the catalyst in the non-polar phase solvent, by using an organic phosphite ligand with attached c9 to c40 aliphatic group rendering the ligand lipophilic |
| 01/16/2001 | US6175039 Catalyzing the reaction in presence a dissolved homogeneous catalyst contained in a distillation column |
| 01/16/2001 | US6175038 Catalyzing the oxidation in presence of a catalyst comprising cobalt, manganese, and bromine, and another transition metal or a lanthanide metal to prevent a decrease in reactivity and the oxidation, precipitation of a catalyst |
| 01/16/2001 | US6175024 Synthesis of functionalized esters |
| 01/16/2001 | US6174833 Contacting phosphorus compound and vanadium compound in an organic solvent to provide catalyst precursor; recovering and drying precursor; pretreating with vapors of acetic anhydride or propionic anhydride or butyric anhydride; calcination |
| 01/16/2001 | CA2039265C Nitrile-accelerated hydrocarboxylation |
| 01/16/2001 | CA2029085C Process for preparing butanetetracarboxylic acid |
| 01/14/2001 | CA2313886A1 Process for the elution of fluorinated emulsifiers |
| 01/10/2001 | EP1067108A2 Process for producing aryloxyacetic acids |
| 01/10/2001 | EP1066872A1 Method for absorption of acrylic compound and apparatus therefor |
| 01/10/2001 | EP1066253A1 Process for producing 13-cis retinoic acid |
| 01/10/2001 | EP1066241A2 Method for producing (meth)acrylic acid and (meth)acrylic acid esters |
| 01/10/2001 | EP1066240A1 Method for producing acrylic acid and acrylic acid esters |
| 01/10/2001 | EP1066239A1 Method for producing acrylic acid and acrylic acid esters |
| 01/10/2001 | EP1066238A1 Process for production of acetic acid |
| 01/10/2001 | EP0934240B1 Production of 6-bromo-2-naphthol and derivatives |
| 01/10/2001 | CN1279234A process for purifying 3.5-dimethyl benzoic acid |
| 01/10/2001 | CN1279233A Process for synthesizing phenylpyruvic acid by catalytic dioxonation |
| 01/10/2001 | CN1279128A Process of preparing halobenzoic acid and its special composite catalyst |
| 01/10/2001 | CN1060522C Process for separating and purifying citric acid |
| 01/09/2001 | US6172112 Anticarcinogenic and antitumor agents |
| 01/09/2001 | US6171998 Method of preparation of a catalyst for acrolein oxidation |
| 01/09/2001 | US6171830 Efficient purification of mycolic acids, salts or derivatives by dissolving mixture in bi-phasic solvent, subjecting to countercurrent distribution separation with sufficient cycles, then recovering |
| 01/09/2001 | CA2005845C Method for preparing a-(4-isobutylphenyl) propionic acid or its precursor |
| 01/04/2001 | WO2001000557A1 Method for making adipic acid |
| 01/04/2001 | WO2001000556A1 Dust-free calcium formate |
| 01/04/2001 | WO2001000555A1 A process for preparation of adipic acid |
| 01/04/2001 | WO2001000322A1 Immobilized photocatalyst |
| 01/04/2001 | DE19955176A1 Catalytic gas phase oxidation of propene to acrylic acid involves passing over two reaction zones containing different fixed bed catalysts comprising multi-metal oxide active components |
| 01/04/2001 | DE10031347A1 Cylindrical reactor for hydrocarbon oxidation has heat exchange plates radially aligned around central inner space and having inlets and outlets for the heat exchange agent |
| 01/04/2001 | CA2377179A1 Method for making adipic acid |
| 01/03/2001 | EP1065197A1 Process for preparing (meth)acrylic acid |
| 01/03/2001 | EP1065196A1 Process of selectively separating and purifying eicosapentaenoic and docosahexaenoic acids or their esters |
| 01/03/2001 | EP1065195A1 Process for the preparation of sorbic acid |
| 01/03/2001 | EP1064997A2 Process and catalyst for the preparation of C2-oxygenates from synthetic gas |
| 01/03/2001 | EP1064288A1 Process for the preparation of bisphosphines |
| 01/03/2001 | EP1064255A1 A process for the manufacture of (2s,2'r,3'r)-2-(2,3-dicarboxylcyclopropyl)-glycine |
| 01/03/2001 | EP0802896B1 Method for purifying crude naphthalenedicarboxylic acid |
| 01/03/2001 | CN1060176C Organometallic fluorenyl compounds, preparation and use |
| 01/03/2001 | CN1060157C Process for obtaining adipic acid |
| 01/03/2001 | CN1060156C Production method for calcium acetate |
| 01/03/2001 | CN1060155C Process for producing aromatic carboxylic acid and apparatus therefor |
| 01/03/2001 | CN1060154C Catalyst for production of unsaturated aldethyde and unsaturated carboxylic acid and method for production of unsaturated aldehyde and unsaturated carboxylic acid by the use of the catalyst |
| 01/02/2001 | US6169214 An oxidation catalyst which consists of a carrier and a catalytically active mixed oxide coating applied to the surface of the carrier containing oxides of molybdenum, iron,bismuth, nickel or cobalt, thallium or 2a or 1a elements |
| 01/02/2001 | US6169202 Wells-Dawson type heteropolyacids, their preparation and use as oxidation catalysts |
| 01/02/2001 | CA2007530C Preparation of 2-chloroterephthaloyl chloride |
| 12/28/2000 | WO2000078701A1 Hydrogenation of phthalic acids |