| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 02/15/2006 | CN1733690A Processes for preparing 2-(omega-alkoxycarbonylalkanoyl)-4- butanolides omega-hydroxy-(omega-3)-keto fatty esters, and derivatives thereof |
| 02/15/2006 | CN1733684A Novel supercritical phase salicylic acid synthesis process |
| 02/15/2006 | CN1733683A Method for preparing 4-isopropyl-naphthenic acid |
| 02/15/2006 | CN1733682A Sofalcone preparation method |
| 02/15/2006 | CN1733681A Preparation method of antimony triacetate |
| 02/15/2006 | CN1733680A Method for separating remaining sugar and extracting organic acid from organic acid fermentation liquor and corresponding organic acid mother liquor |
| 02/15/2006 | CN1241919C Method for purifying compound of anhydrides aromatic carboxylic acid |
| 02/15/2006 | CN1241918C Prepn process of high purity alkenyl succinic anhydride |
| 02/15/2006 | CN1241895C Process for production of vinyl acetate |
| 02/15/2006 | CN1241894C Process for extracting lactic acid from fermentation liquid |
| 02/15/2006 | CN1241893C Caproleic acid extracting process from royal jelly |
| 02/15/2006 | CN1241892C Method for purifying acrylic acid |
| 02/15/2006 | CN1241891C Method for oxidising hydrocarbons, alcohols and/or ketones |
| 02/15/2006 | CN1241887C Process for simultaneous production of maleic anhydride and its hydrogenated derivatives |
| 02/15/2006 | CN1241882C Method for hydrogenating organic compounds by means of RU/SIO2 catalysts |
| 02/14/2006 | US6998506 Process for preparing acylfluorides |
| 02/14/2006 | US6998505 Process for producing (meth)acrylic acid compound |
| 02/14/2006 | US6998504 Method for the catalytic gas phase oxidation of propene into acrylic acid |
| 02/14/2006 | US6998496 Rumen bypass calcium salts of trans and polyunsaturated fatty acids |
| 02/14/2006 | US6998495 Method for producing optically active 3,5-dihydroxycarboxylic acid derivative |
| 02/14/2006 | US6998491 For use in oxidation reactions, carboxylation reactions, nitration reactions, sulfonation reactions, coupling reactions |
| 02/09/2006 | US20060030733 Process for producing perfluorodiacyl fluorinated compounds |
| 02/09/2006 | US20060030729 Oxidation process in fluidised bed reactor |
| 02/09/2006 | US20060030716 Oxidation, nitration, carboxylation catalysts; 6-carbonyloxy-1,3,5-triazine-2,4-dione derivatives |
| 02/08/2006 | EP1623969A1 Alpha-pentafluoroethylacrylic acid derivative and process for producing the same |
| 02/08/2006 | EP1622855A1 Carbonylation process using metal-polydentate ligand catalysts |
| 02/08/2006 | EP1622854A1 Carbonylation process using metal-tridentate ligand catalysts |
| 02/08/2006 | EP1448509A4 Method of preparing phenoxy alkanoic, alkenoic, and alkynoic acids and salts thereof via a dicarboxylate intermediate |
| 02/08/2006 | EP1399138B1 Method for the production of solid formulations of sodium 3-hydroxy-3-methylbutyrate |
| 02/08/2006 | EP0937023B2 Process for the preparation of an aldehyde |
| 02/08/2006 | CN1732144A Low water methanol carbonylation process for high acetic acid production and for water balance control |
| 02/08/2006 | CN1732142A Method for production naphthalene derivatives |
| 02/08/2006 | CN1732135A Method of deuterization |
| 02/08/2006 | CN1730457A Process for organic acid extraction from fermentation liquid using membrane method |
| 02/08/2006 | CN1730448A Cimicifuga rhizome organic acid extraction method and novel uses |
| 02/08/2006 | CN1240703C Organometallic building material and method for producing the same |
| 02/08/2006 | CN1240662C Process for producing (methyl)acrylic acid compound |
| 02/08/2006 | CN1240661C One-step process for preparing sodium biacetate |
| 02/08/2006 | CN1240658C Process for prepn. of fluorinated ketones |
| 02/08/2006 | CN1240657C Improved separation processes |
| 02/07/2006 | US6995282 Selectively removing water present in the gases resulting from the absorption column and with it the nonabsorbed organic compounds such as acetic acid present in these gases, without condensing propylene and acrolein which are recycled |
| 02/07/2006 | US6994833 adapted to repress migration of a heat medium (heat transfer medium) between adjacent chambers partitioned with a shield, and a method for the production of (meth)acrylic acid by the use of the reactor |
| 02/07/2006 | CA2272370C Production of aromatic carboxylic acids and recovery of co/mn cattalyst from ash |
| 02/02/2006 | WO2006012287A2 Method for preparing free-flowing crystalline material |
| 02/02/2006 | WO2006012046A2 Preparation of aminophosphines |
| 02/02/2006 | WO2006012045A1 Phosphine-phosphoramidite compounds |
| 02/02/2006 | WO2005087692A3 Process for recovering organic compounds from aqueous streams containing same |
| 02/02/2006 | US20060025629 Method for producing (meth) acrylic acid |
| 02/02/2006 | US20060025628 Process for direct oxidation of methane to acetic acid |
| 02/02/2006 | US20060025620 Process for producing fatty acid alkyl ester composition |
| 02/02/2006 | US20060025615 Dehalogenation, carboxylation, decarboxylation, salt formation, desalting, oxidative desulfurization, fluorination, acidification, protonation, deprotonation, bromination |
| 02/02/2006 | CA2571359A1 Method for preparing free-flowing crystalline material |
| 02/01/2006 | EP1620385A1 A purification process of crude terephtalic acid in a post oxidation zone by the addition of steam |
| 02/01/2006 | EP1620384A2 Manufacture of conjugated linoleic salts and acids |
| 02/01/2006 | EP1390339B1 Process for the preparation of 7-substituted 3-alkyl-3h-isobenzofuran-1-one derivatives |
| 02/01/2006 | CN1729154A Method for producing carboxylic acid |
| 02/01/2006 | CN1729052A Process and catalyst for dehydrogenating primary alcohols to make carboxylic acid salts |
| 02/01/2006 | CN1727323A Method for preparing alkyl salicylic acid |
| 02/01/2006 | CN1727322A Method of microwave dehydrogenation for producing sodium oxalate |
| 02/01/2006 | CN1239472C HIV integrase inhibitors |
| 02/01/2006 | CN1239461C Microwave depolymerization method for PET |
| 02/01/2006 | CN1239460C Synthesis of trans-4-alkyl cyclohexyl formic acid |
| 02/01/2006 | CN1239459C Method for preparing anchoic acid by microwave cracking ozonization reaction product |
| 02/01/2006 | CN1239458C Process for preparing bromodifluoacetic acid compounds |
| 02/01/2006 | CN1239457C Separation method for aquatic mixture of formic acid and acetic acid |
| 01/31/2006 | US6992212 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 |
| 01/31/2006 | US6992209 esterifying an alpha-hydroxy acid or ester and transforming the alpha-acyloxy derivative into an alpha, beta-unsaturated derivative. |
| 01/26/2006 | WO2006009571A1 Process for removal of impurities from mother liquor in the synthesis of carboxylic acid using pressure filtration |
| 01/26/2006 | WO2006009266A1 Process for producing oxygenic compound |
| 01/26/2006 | WO2006008177A1 Metal oxide catalyst and method for the preparation thereof |
| 01/26/2006 | WO2006008083A1 Method for the purification of (meth)acrylic acid |
| 01/26/2006 | WO2005108409A3 Ferrocenyl ligands for homogeneous, enantioselective hydrogenation catalysts |
| 01/26/2006 | US20060020142 Catalytic (AMM)oxidation process for conversion of lower alkanes to carboxylic acids and nitriles |
| 01/26/2006 | US20060020121 Preparation of ytterbium(III) beta-diketonates |
| 01/26/2006 | US20060019842 Aluminum complex grease |
| 01/26/2006 | DE102004031849A1 Verfahren zur Carbonylierung von Phenylalkylderivaten mit Kohlenmonoxid Process for the carbonylation of Phenylalkylderivaten with carbon monoxide |
| 01/26/2006 | CA2570969A1 Process for removal of impurities from mother liquor in the synthesis of carboxylic acid using pressure filtration |
| 01/25/2006 | EP1619178A1 Improved catalytic (Amm) oxidation process for conversion of lower alkanes to carboxylic acids and nitriles |
| 01/25/2006 | EP1618953A1 Metal catalyst and its use |
| 01/25/2006 | EP1618952A1 Method for producing metal oxide catalyst |
| 01/25/2006 | CN1726180A Selective reaction of hexafluoropropylene oxide with perfluoroacyl fluorides |
| 01/25/2006 | CN1726179A Hydrogenation of benzene polycarboxylic acids or derivatives thereof |
| 01/25/2006 | CN1726178A Method for the production of benzophenonen |
| 01/25/2006 | CN1726082A Catalysts and process for the direct conversion of methane into acetic acid |
| 01/25/2006 | CN1724504A Technology of preparing hdyroxy acetic acid |
| 01/25/2006 | CN1724503A New technological process of synthesizing acetyl bromide, acetic acid, acetate from methane |
| 01/25/2006 | CN1724502A Method of producing trichloroacetic acid by photochlorination of acetic acid |
| 01/25/2006 | CN1238331C Method of purifying terephthalic acid from terephthalic sludge |
| 01/25/2006 | CN1238330C Salts of asiatic and madecassic acid suitable for preparation of pharmaceutical and cosmetic compositions |
| 01/25/2006 | CN1238329C Method for producing acrylic acid |
| 01/25/2006 | CN1238328C Environmental pretection type process for synthesizing pentandioic acid by catalyzing oxidizing glutaraldehyde |
| 01/25/2006 | CN1238327C Process for synthesis of isobutyric acid |
| 01/25/2006 | CN1238326C Oxidation reactor, method for producing (meth)acrylic acid or the like |
| 01/25/2006 | CN1238325C Method for catalytic gas phase oxidation of acrolein into acrylic acid |
| 01/25/2006 | CN1238324C production process of 2-[4-2,2-dihalocyclopropyl]phenoxy]-alkanoic acids and esters thereof |
| 01/25/2006 | CN1238080C Purification apparatus having steam dispersion device |
| 01/24/2006 | USRE38947 Method of enantioselectively catalyzing a reaction |
| 01/24/2006 | US6989467 Microwave induced process for the preparation of substituted 4-vinylphenols |
| 01/24/2006 | US6989463 Transporting by-product waste polyacrylic acid, a bottom liquid discharged from distillation, to storage tank through pipeline; heating, prevent retention or clogging in pipeline; solvent-free, concentrated polymerization inhibitors |
| 01/24/2006 | US6989460 Methods for producing unsaturated carboxylic acids and unsaturated nitriles |