Patents
Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144)
01/2004
01/28/2004CN1136181C Method for manufacture of products containing disalts of formic acid
01/28/2004CN1136021C Method for distilling polymericable compound and liquid containing polymericalbe compound
01/27/2004US6683208 For use in preparation of optically active carboxylic acids and/or derivatives
01/27/2004US6683207 Production method of (R)-3 hydroxy-3-(2-phenylethyl) hexanoic acid and intermediate thereof
01/27/2004US6683206 Stereoselective addition to benzaldehydes; regioselective elimination to form 3-r-2-r3-propenic acid esters; hydrolysis; hydrogenation using ruthenium, rhodium or iridium catalyst
01/27/2004CA2109150C Heat sealable shrink laminate
01/22/2004WO2004007422A1 Process for producing diol derivative
01/22/2004WO2004007416A1 Preparations containing diformates and short-chain carboxylic acids
01/22/2004WO2004007415A1 Method for the production of a dicarboxylic acid from acrylic acid
01/22/2004WO2004007405A1 Method for reliably operating a continuous heterogeneously catalyzed gas phase partial oxidation of at least one organic compound
01/22/2004WO2004007267A1 Pivotable cover lid for a vehicle
01/22/2004WO2004007071A1 Method for preparing a catalyst for partial oxidation of acrolene
01/22/2004WO2004007065A1 Method for the production of easily polymerizable compounds
01/22/2004WO2004007064A1 Catalytic oxidation reactor with enhanced heat exchanging system
01/22/2004WO2003095407A3 2,4-dialkyl-branched aldehydes and derivatives produced therefrom
01/22/2004WO2003049690A3 Hiv integrase inhibitors
01/22/2004WO2003038105A3 Sequences for the preparation of 5-ketogluconic acid from gluconic acid
01/22/2004US20040015328 From exchange reaction by extracting bisimide/anhydride exchange reaction aqueous phase with solution comprising exchange extracted aqueous phase of water, catalyst and dianhydride precursor; molten phase is formed, depressurized
01/22/2004US20040015014 Method for production of acrylic acid
01/22/2004US20040015013 In fixed-bed reactor having plurality of catalyst tubes, in which reduction of quality of catalyst load with increasing duration of operation is restored by partial catalyst change
01/22/2004US20040015012 Explosion diagram for the feed gas mixture is deposited as the basis of a cut-out mechanism in a computer
01/22/2004US20040015011 Method for producing propylene hydroformylation products and acrylic acid and/or acrolein
01/22/2004US20040015010 Process for the preparation of bromoisophthalic acid compounds
01/22/2004US20040015009 Oxidation of alkly-aromatic compounds
01/22/2004US20040015001 Method for commercial preparation of preffered isomeric forms of ester free conjugated fatty acids with solvents systems containing polyether alcohol solvents
01/22/2004US20040014990 Preparation of maleic anhydride and catalyst for this purpose
01/22/2004US20040014184 Method for obtaining 12-hydroxystearic acid
01/22/2004US20040013587 Reacting together of at least two principal step reaction components, with or without at least one catalyst component using of motion augmented sub- Kolmogoroff micro-agitation; separation; supplying reactant to subsequent step
01/22/2004US20040011638 Method for stabilizing acrylic monomers
01/22/2004DE10231291A1 Verfahren zur Herstellung einer Dicarbonsäure ausgehend von Acrylsäure A process for producing a dicarboxylic acid based on acrylic acid
01/22/2004DE10230219A1 Verfahren der rektifikativen Auftrennung von (Meth)acrylmonomere enthaltende Fluiden A process for rectificative separation of (meth) acrylic monomers containing fluids
01/22/2004CA2492159A1 Preparations containing diformates and short-chain carboxylic acids
01/22/2004CA2491280A1 Method for the production of a dicarboxylic acid from acrylic acid
01/21/2004EP1382661A1 A method for producing a fatty acid
01/21/2004EP1382592A1 Method for production of acrylic acid
01/21/2004EP1382390A1 Copper Raney catalyst for the dehydrogenation of alcohols
01/21/2004EP1382389A1 Raney copper catalyst for the dehydrogenation of alcohols
01/21/2004EP1381464A1 Catalyst support with intersecting channel network, catalysis reactor comprising same and method for making same
01/21/2004CN1469857A Method of producing carboxylic acid salts
01/21/2004CN1469856A Oxidation of alkyl-aromatic compounds
01/21/2004CN1468834A Preparation of 3-alkoxy-2-methyl benzoic acid
01/21/2004CN1135219C Improved method for producing mixed high purity (methyl) acrylic anhydrides
01/21/2004CN1135217C Method for preparing and purifying acetate by reaction distillation effect
01/21/2004CN1135216C Process for preparing saturated carboxylicacides having 1 to 4 carbon atoms
01/21/2004CN1135215C Process for recovering methyl acetate and residual acetic acid in the production of pure terephthalic acid
01/21/2004CN1135214C Process for producing aromatic carboxylic acid
01/21/2004CN1135213C Method for producing maleic anhydride
01/21/2004CN1135212C Process for producing acetic anhydride
01/21/2004CN1135211C Anhydrous carbonylation process for production of acetic acid
01/20/2004US6680395 Method for the synthesis of straight-chain aliphatic carboxylic acids from aldehydes
01/20/2004US6679939 Fractional condensation of a product gas mixture containing acrylic acid
01/15/2004WO2004005276A1 Process for preparation of 1,3-benzodioxole-2-spiro- cycloalkane derivatives
01/15/2004WO2004005240A1 Process for preparing nateglinide and intermediates thereof
01/15/2004WO2004005235A1 Process for producing aromatic dicarboxylic acids under supercritical conditions
01/15/2004WO2004005234A2 Improvements in metal salts
01/15/2004WO2004004861A1 Method for the rectifying separation of fluids containing (meth)acryl monomers
01/15/2004WO2003082789A3 Oxon process
01/15/2004WO2003080542A3 Method for producing 3-hydroxy-2-methylbenzoic acid
01/15/2004US20040010040 Granulation; free-flowing; absorption of butyric acid on carrier; salt formation; acidification adjuvant for animal feeds
01/15/2004US20040010032 Intermediate for dronedarone.
01/15/2004DE10228050A1 Dikupfer(I)oxolat-Komplexe als Precursor-Substanzen zur metallischen Kupferabscheidung Dicopper (I) oxolat complexes as precursor substances for metallic copper deposition
01/15/2004CA2492148A1 Process for producing aromatic dicarboxylic acids under supercritical conditions
01/15/2004CA2491464A1 Process for preparation of 1,3-benzodioxole-2-spiro- cycloalkane derivatives
01/15/2004CA2491380A1 Improvements in metal salts
01/14/2004EP1380564A1 Binaphtol derivative and process for producing the same
01/14/2004EP1380563A1 Granule of parahydroxybenzoic acid or parahydroxybenzoic ester and process for producing the same
01/14/2004EP1379491A1 Method and device for the two-step production of acrylic acid
01/14/2004EP1379485A1 Selective ring-opening cross-metathesis of cycloolefins
01/14/2004CN1468149A Palladium catalyst and processes for using the same
01/14/2004CN1467193A Method for preparing high-content alpha-linolenic acid
01/14/2004CN1134405C 5,6-Dihydronaphthalenyl derivatives having retionoid-like activity
01/14/2004CN1134404C Method for recovering acrylic acid
01/14/2004CN1134402C Water separation process
01/14/2004CN1134401C Aromatic acid monomers, polymers, products and processes for their manufacture
01/14/2004CN1134399C Method for making bis-xylenols containing acid moieties
01/14/2004CN1134398C Method for carbonylation of lower aliphatic alcohols
01/14/2004CN1134396C Process for the manufacture of quaternary carboxylic acids
01/14/2004CN1134382C Method for oxidizing hydrocarbons, catalyst containing silver and uses thereof
01/14/2004CN1134302C Method for producing shell catalysts for catalytic vapor-phase oxidation of aromatic hydrocarbons and catalysts obtained in such manner
01/14/2004CN1134296C Method for preparation of modified carrier, complex oxide catalyst and acrylic acid
01/13/2004US6677487 Combining a tertiary amide with a pentavalent phosphorous halide in a solvent to form an alpha - haloiminium salt and converting the alpha -haloiminium salt to the alpha -haloenamine with a base
01/13/2004US6677482 Method of manufacturing (meth) acrylic acid
01/13/2004US6677481 Reacting isobutylene and carbon monoxide in presence of hydrorefining catalyst to form crude acid product which is then separated; for use in agriculture, pharmaceuticals, and aromatic chemicals; by-product inhibition
01/13/2004US6677480 Measuring density of heavy phase of light ends distillation column comprising methyl iodide and methyl acetate, using to adjust feed of methanol and/or to regulate temperature in reaction zone to optimize reactor conditions
01/13/2004US6677479 Substituted fluoroaromatics, process for preparing them and their use
01/13/2004US6677476 Process for preparing R-(-) -carnitine from S-(-)-chlorosuccinic acid or from a derivative thereof
01/13/2004US6677390 Photocurable composition containing iodonium salt compound
01/13/2004US6676808 Method for starting up distilling column
01/08/2004WO2004002934A1 Dicarboxylic acids for dielectrics with barrier effect against copper diffusion
01/08/2004WO2004002933A1 Process for the separation of the water produced in the catalytic oxidation of aromatic hydrocarbons to polycarboxylic aromatic acids
01/08/2004US20040006250 Alkene oligomerization process
01/08/2004US20040006244 Process for making ethyencially unsaturated acids and acids
01/08/2004US20040006243 Reacting a phenylketone with a silylcyanide in the presence of an asymmetric catalyst to form a siloxynitrile, and reacting the siloxynitrile with a reducing agent to obtain an aldehyde and oxidizing the aldehyde, or hydrolysis of siloxynitrile
01/08/2004DE10226219A1 Verfahren zur Herstellung von 3-Acyloxy-2-methylbenzoesäuren A process for the preparation of 3-acyloxy-2-methylbenzoic
01/07/2004EP1377537A1 Metathesis of unsaturated fatty acid esters or unsaturated fatty acids with lower olefins
01/07/2004EP1377372A2 Palladium catalyst and processes for using the same
01/07/2004EP0996501B1 Method for regenerating a zeolitic catalyst
01/07/2004CN1466564A Process for producing fluorinated polyvalent carbonyl compound
01/07/2004CN1466563A Process for producing fluorinated ester compound
01/07/2004CN1466562A Process for producing acyl fluoride and carboxylic acid salt