| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 06/12/2002 | EP1212281A2 Method for producing acid chlorides |
| 06/12/2002 | EP1212280A1 Method for purifying acrylic acid obtained by oxidation of propylene and/or acrolein |
| 06/12/2002 | EP1212279A2 Purification of aromatic diacids |
| 06/12/2002 | EP1212278A2 A process for separation of crude naphthalene dicarboxylic acid using reverse osmosis |
| 06/12/2002 | EP1212277A2 An integrated process for the production of 2,6-naphthalene dicarboxylic acid |
| 06/12/2002 | EP1212276A1 Sulfur containing promoter for alkanes oxidative dehydrogenation processes |
| 06/12/2002 | EP1212275A1 A process for producing diacids by carboxylation of phenolic compounds |
| 06/12/2002 | EP1212274A1 Carboxylation of hydrocarbons to terephthalic acid or naphthalene dicarboxylic acid |
| 06/12/2002 | EP1212273A2 Method for purifying acid chlorides |
| 06/12/2002 | EP1176234A9 Catalyst supports, supported catalysts, methods of making the same and methods of using the same |
| 06/12/2002 | EP1017663B1 Method for preparing light-coloured ether carboxylic acids |
| 06/12/2002 | EP1005477B1 Method for isolating anionic organic substances from aqueous systems using cationic polymer nanoparticles |
| 06/12/2002 | EP1003708B1 Improved process for separating pure terephthalic acid |
| 06/12/2002 | EP1001926B1 Improved process for recovering hydrogen in producing pure terephthalic acid |
| 06/12/2002 | EP0968166B1 Process for the manufacture of carboxylic acids |
| 06/12/2002 | EP0914195B1 Method for separating a catalyst by membrane electrodialysis |
| 06/12/2002 | EP0904259B1 Processes using multistaged reactors |
| 06/12/2002 | CN1353678A Site-specific isotopically-labeled proteins, amino acids, and biochemical precursors therefor |
| 06/12/2002 | CN1353627A Vanadium/phosphorus mixed oxide catalyst precursor |
| 06/12/2002 | CN1353104A Process for preparing nutritive oil of conjugated diene-linoleic acid from soybean oil |
| 06/12/2002 | CN1086185C Process for preparing 2-valence metal salt of alcoether carboxylic acid |
| 06/12/2002 | CN1086184C 2-valence metal salt of alkylphenyl polyoxyvinethene carboxylic acid and its preparing process |
| 06/11/2002 | US6403832 Mixing acid with amine, precipitating salt, and filtering; good optical purity |
| 06/11/2002 | US6403829 Method for the catalytic gas phase oxidation of acrolein into acrylic acid |
| 06/11/2002 | US6403827 Crystalline 2-hydroxynaphthalene-3-carboxylic acid having specified average particle size |
| 06/11/2002 | US6403817 Method for preparing prostaglandin E-type compound |
| 06/11/2002 | US6403734 Organometallic fluorenyl compounds, preparation, and use |
| 06/11/2002 | US6403525 Useful for the vapor phase oxidation of an alkane or a mixture of an alkane and and alkene to unsaturated carboxylic acid vapor phase and for ammoxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated nitrile |
| 06/06/2002 | WO2002044138A1 Process for producing fluorosulfonyl fluoride compound |
| 06/06/2002 | WO2002044110A1 An oxidation reaction process catalysized by phase-transfer catalyst controlling reaction |
| 06/06/2002 | WO1999002120A8 Compositions and methods for reversibly increasing permeability of biomembranes |
| 06/06/2002 | US20020068841 Alkyl aromatic aldehydes |
| 06/06/2002 | US20020068837 Oxidative ozonolysis of dicarboxylic amides then crystallizing |
| 06/06/2002 | US20020068832 Methods for making 2-(omega-alkoxycarbonylalkanoyl) -4-butanolide, ester of omega-hydroxy - ( omega-3 ) -ketoaliphatic acid, and derivatives thereof |
| 06/06/2002 | US20020068113 A calcium double salt of organic (preservative) acids of formula Ca(R1)(R2) where R1 and R2 are different and are each OOC-R3, R3=saturated or monounsaturated or polyunsaturated c1-c5-alkyl, C1-C5-hydroxyalkyl or phenyl |
| 06/06/2002 | US20020066703 TMP/Vapor pressure filtration |
| 06/06/2002 | DE10122788A1 Preparation of purified melt of monomer(s) involves forming suspension, crystallizing, mechanically separating suspended monomer crystals and further crystallizing and separating |
| 06/06/2002 | DE10122787A1 Preparation of purified melt of monomer(s) involves forming gaseous or liquid monomer-containing phase, condensing, absorbing or extracting from raw melt and crystallizing |
| 06/05/2002 | EP1211235A2 Preparation process of 4,4'-Dicarboxydiphenyl ethers or derivatives thereof |
| 06/05/2002 | EP1210322A1 Method for carrying out the side chain bromination of 4-methyl biphenyl derivatives substituted at the 2'-position |
| 06/05/2002 | EP1210317A2 Method for reduction of potassium in an integrated process for the production of 2,6-nda |
| 06/05/2002 | EP1210316A1 A method for increasing the yield of 2,6-nda |
| 06/05/2002 | EP1210315A2 Disproportionation catalyst |
| 06/05/2002 | EP1210314A2 A process for improving yields in a disproportionation reaction (high yield henkel) |
| 06/05/2002 | EP1210313A1 Process for making an aromatic diacid in one step using a single catalyst system |
| 06/05/2002 | EP1210312A2 Closely linking a nda process with a pen process |
| 06/05/2002 | EP1210311A1 A process for carboxylation of naphthoic acid to naphthalene dicarboxylic acid |
| 06/05/2002 | EP1210310A1 Method for preparing acid chlorides and benzene aldehydes |
| 06/05/2002 | EP0998443B1 Treatment of formaldehyde-containing mixtures |
| 06/05/2002 | EP0971940B1 Diphosphines |
| 06/05/2002 | EP0971872B1 Process for preparing 2,6-naphthalenedicarboxylic acid |
| 06/05/2002 | EP0970035B1 A process for the recovery of lactic acid |
| 06/05/2002 | EP0909268B1 Method for preparing substituted anthraquinone and application to the preparation of rheins |
| 06/05/2002 | CN1352630A Process for preparing R-(-)-carnitine S-(-)-chlorosuccinic acid or from a derivative thereof |
| 06/04/2002 | WO2002098835A1 Crystallization method for production of purified aromatic dicarboxylic acids |
| 06/04/2002 | US6399818 Process for producing unsaturated aldehydes and unsaturated carboxylic acids |
| 06/04/2002 | US6399817 Process for preparing (meth)acrylic acid |
| 06/04/2002 | US6399816 Method for selectively producing acetic acid through the catalytic oxidation of ethane |
| 06/04/2002 | US6399801 Reacting acid melt with lithium hydroxide in aqueous solution; heating; stirring |
| 06/04/2002 | US6399800 Process for the production of fatty acid alkyl esters |
| 06/04/2002 | US6399790 Method for oxidation of xylene derivatives |
| 06/04/2002 | CA2055804C Preparation of alkoxyalkanoic acids |
| 05/30/2002 | WO2002042249A1 Production of butane tetracarboxylic acid derivatives by means of coupled electrosynthesis |
| 05/30/2002 | WO2001077055A3 Specific salt forms of triphenylethylene derivatives as selective estrogen receptor modulators |
| 05/30/2002 | US20020065431 Promoted multi-metal oxide catalyst |
| 05/30/2002 | US20020065430 Method of recovering chemical species by depolymerization of poly (ethylene terephthalate) and related use |
| 05/30/2002 | US20020065417 Useful as ligands for metal catalysts for asymmetric reactions, in particular as rhodium complexes for asymmetric hydrogenation of enamide, itaconate, and alpha-ketoester compounds |
| 05/30/2002 | CA2429542A1 Production of butane tetracarboxylic acid derivatives by means of coupled electrosynthesis |
| 05/29/2002 | EP1209145A2 Process for preparing an aryl formate and an aromatic carboxylic acid |
| 05/29/2002 | EP1209125A2 Process for recovering fluorinated akanoic acids from wastewater |
| 05/29/2002 | EP1208075A1 Process for producing a vic-dichloro acid fluoride |
| 05/29/2002 | EP1208074A1 Process for the production of fluorocarboxylic acid anhydrides |
| 05/29/2002 | EP1208073A1 Rhodium/inorganic iodide catalyst system for methanol carbonylation process with improved impurity profile |
| 05/29/2002 | EP1208072A1 Rhodium/inorganic iodide catalyst system for methanol carbonylation process with improved impurity profile |
| 05/29/2002 | EP1208065A1 Method for recovering fluorinated emulsifiers from aqueous phases |
| 05/29/2002 | EP0979223B1 Method for producing acetic acid in a reactor cascade |
| 05/29/2002 | DE10145958A1 Production of catalyst for oxidation or ammoxidation of propane or isobutane involves drying and calcining a mixture of niobium and other metal compounds, with niobium being in the form of a complex, e.g. with hydrogen peroxide |
| 05/29/2002 | DE10055181A1 Verfahren zur Herstellung von Poly- oder Monomethylolalkansäuren Process for the preparation of poly- or monomethylolalkanoic |
| 05/29/2002 | CN1351517A Process for producing catalyst |
| 05/29/2002 | CN1351006A Process for refining long-chain biatomic acid |
| 05/29/2002 | CN1351005A Process for extracting and refining long-chain dicarboxylic acid from bio-fermented liquid |
| 05/29/2002 | CN1351004A Process for preparing long-chain dicarboxylic acid and its ester |
| 05/29/2002 | CN1350999A Oxidation for producing chain olefin and carboxylic acid |
| 05/29/2002 | CN1350998A Oxidation for producing chain olefin and carboxylic acid |
| 05/29/2002 | CN1350881A Apparatus and method for heat exchange with fluid bed |
| 05/29/2002 | CN1085724C Process for making solid compositions containing quaternary ester ammonium compounds and fatty acids |
| 05/28/2002 | US6395939 Catalytic etherification and condensation with copper catalysts |
| 05/28/2002 | US6395936 Vapor deposition and oxidation of propene to acrolein with oxygen |
| 05/28/2002 | US6395931 Reaction of cyanoacetic acid with hydrochloric acid to form malonic acid, separation of acetic acid by-products and purification |
| 05/28/2002 | US6395928 Rhodium-catalyzed carbonylation using non-acetate lithium, sodium and potassium inorganic salts as promoters to produce carboxylic acids |
| 05/28/2002 | US6395927 Carbon monoxide, an iridium compound to form acetic acid and methyl acetate |
| 05/28/2002 | US6395926 Process for recovering low-boiling acids |
| 05/28/2002 | US6395921 Process for preparing [bis-(trifluoromethyl)-phenyl]-acetic acids and alkyl esters thereof and dialkyl [bis-(trifluoromethyl)-phenyl]-malonates |
| 05/28/2002 | US6395296 Soluble double metal salt of group IA and IIA of hydroxycitric acid, process of preparing the same and its use in beverages and other food products without effecting their flavor and properties |
| 05/28/2002 | US6395179 Thermally-managed separation and dewatering processes for recovering acid products |
| 05/28/2002 | US6395140 Method for producing (meth)acrylic acid |
| 05/23/2002 | WO2002040154A1 Catalysts comprising n-substituted cyclic imides and processes for preparing organic compounds with the catalysts |
| 05/23/2002 | WO2002034387A8 Catalyst and method for producing maleic anhydride |
| 05/23/2002 | WO2002006199A3 Method for producing acrylic acid by the heterogeneously catalysed gas-phase oxidation of propane |
| 05/23/2002 | WO2001090040A3 Method for isolating polymethyl alkanoic acids and for the disposal of the resulting wastes |