| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 07/04/2001 | CN1067974C Recovery of acetic acid from dilute aqueous streams formed during carbonylation process |
| 07/03/2001 | US6255527 Measuring, controlling and maintaining continuous production liquid reaction comprising methyl acetate, water, methyl iodide, group viii noble metal catalyst, and promoter; stability and reliability |
| 07/03/2001 | US6255525 Mixing with solvent in the presence of hydrogen gas with carbon catalyst free of hydrogenation metal component at elevated temperature and pressure |
| 07/03/2001 | US6255524 Process for producing acid chlorides having polyfluoroalkyl groups |
| 07/03/2001 | US6255510 Production of aromatic carboxylic acids and recovery of Co/Mn catalyst from ash |
| 07/03/2001 | US6255505 Microbial polyunsaturated fatty acid containing oil from pasteurised biomass |
| 07/03/2001 | US6255504 Process for preparation of branched fatty acids |
| 07/03/2001 | US6254779 Treatment of effluent streams containing organic acids |
| 07/03/2001 | CA2006222C Enhanced chemiluminescence from 1,2-dioxetanes through energy transfer to tethered fluorescers |
| 06/29/2001 | CA2329817A1 Method for the reduction of iodine compounds from a process stream |
| 06/28/2001 | WO2001046130A1 Process for the preparation of diphenyl ether compounds |
| 06/28/2001 | WO2001046116A1 Perfluorinated acid fluorides and preparation thereof |
| 06/28/2001 | WO2001046113A1 Process for producing fluorocarboxylic anhydride |
| 06/28/2001 | WO2001046112A1 Method for preventing polymerization of vinyl compound |
| 06/28/2001 | WO2001046111A1 Oxidation process |
| 06/28/2001 | WO2001046109A1 Process for enhanced acetone removal from carbonylation processes |
| 06/28/2001 | WO2001046093A2 Process for producing a fluoride compound |
| 06/28/2001 | WO2000001653A9 A process for the isolation of aromatic hydroxycarboxylic acids |
| 06/28/2001 | US20010005763 A reboiler of a distillation column for producing acrylic or methacrylic acid by catalytic gas phase oxidation, wherein at least a part of reboiler is made of a nickel-chromium-iron alloy with molybdenum 3 to 20 mass %, but not including 3% |
| 06/28/2001 | US20010005755 Method of stabilizing N-oxyl compounds in vinyl compounds |
| 06/28/2001 | US20010004960 Method for purification of acrylic acid |
| 06/28/2001 | CA2392524A1 Perfluorinated acid fluorides and preparation thereof |
| 06/27/2001 | EP1110940A2 Method for purification of acrylic acid |
| 06/27/2001 | EP1110603A1 Process for the synthesis of VPO catalysts |
| 06/27/2001 | EP1109798A1 Geranic acid derivatives |
| 06/27/2001 | EP1109774A1 Method for producing acrolein and/or acrylic acid from propane |
| 06/27/2001 | EP1109773A1 Method for producing acrolein and/or acrylic acid from propane |
| 06/27/2001 | EP1109772A1 Process for the production of acetic acid |
| 06/27/2001 | EP1109619A1 Reactor comprising a contact tube bundle |
| 06/27/2001 | EP0888277B1 Production of acetic acid from methane |
| 06/27/2001 | CN1301267A Production of optically active phospholanes |
| 06/26/2001 | US6252122 Efficiency |
| 06/26/2001 | US6252110 Distillation of high boiling impurity mixture containing acrylic acid, dimer acid and maleic acid within an acrylic acid recovery column with subsequent pyrolysis of dimer acid from bottoms liquid |
| 06/26/2001 | US6252109 Quickly releasing bound formic acid from washed material, i,e. cellulose or lignin formates from a pulp cooker, at a normal pressure and at a temperature less than 1oo degrees c. using a low concentration of free formic acid as catalyst |
| 06/26/2001 | US6252105 Absorption of hydrolyzable fluoride compound impurities onto a scavenging oxide material to purify the desired fluorinated organic compound; by-product inhibition, corrosion resistanc |
| 06/26/2001 | US6251642 Enzymatically converting amylopectin to alpha-(1,4)-linked oligosaccharide, oxidizing basic anion exchange resin to (s)-3,4-dihydroxybutyric acid, esterifying with alcohol and acid catalyst, then cyclizing with acid catalyst |
| 06/22/2001 | CA2329565A1 Process for the synthesis of vpo catalysts |
| 06/21/2001 | US20010004627 Carrier comprising an inert surface having on it a mixed oxide of a group 2A metal and at least one of silicon, aluminum, titanium and zirconium, and optionally other metals; for carrying a molybdenum-vanadium oxide catalyst |
| 06/21/2001 | DE19959413A1 Trägerkatalysatoren und deren Verwendung bei der Gasphasenoxidation von Kohlenwasserstoffen Supported catalysts and their use in the gas-phase oxidation of hydrocarbons |
| 06/20/2001 | EP1108709A1 Aromatic diamine/aromatic dicarboxylate and production method thereof |
| 06/20/2001 | EP1108470A1 Supported catalyst and the use thereof for the gas phase oxidation of hydrocarbons |
| 06/20/2001 | CN1299820A Ferrocene oxazoline phosphino ligand with several chiral centers and its synthesis and use |
| 06/20/2001 | CN1299806A Method of reducing vibration and fault of vertical centrifuge in production of p-benzene dicarboxylic acid |
| 06/20/2001 | CN1299805A Preparation method for arylic acid and apparatus for preparing arylic acid |
| 06/20/2001 | CN1299804A Method for producing acetic acid |
| 06/20/2001 | CN1067372C Process for producing acetic acid |
| 06/19/2001 | US6248923 Process for the production of fluorocarboxylic acid anhydrides |
| 06/19/2001 | US6248922 In high yield, large scale in large batch amounts, with high quality, and in a relatively short amount of time. |
| 06/19/2001 | CA2222367C Procedure for the preparation of dibasic acids from washings from the products of cyclohexane oxidation |
| 06/19/2001 | CA2197883C 1,2-disubstituted aromatic chelates |
| 06/19/2001 | CA1341257C Benzhydrylamine derivatives |
| 06/14/2001 | WO2001042198A2 Methods for producing cyanobenzoic acid derivatives |
| 06/14/2001 | WO2001042190A1 Method for the stereoselective synthesis of cyclic amino acids |
| 06/14/2001 | WO2001042186A1 Compound having hydroxycarbonyl-halogenoalkyl side chain |
| 06/14/2001 | WO2001042185A2 Method for producing o-chloromethyl benzoic acid chlorides |
| 06/14/2001 | WO2001042184A1 Method for producing methacrylic acid |
| 06/14/2001 | WO2001042183A2 Method for producing o-chloromethyl benzenecarbonyl chlorides |
| 06/14/2001 | WO2001042182A2 Method for producing o-chloromethyl benzoic acid chlorides |
| 06/14/2001 | WO2001041924A2 Oxidative reactions using membranes that selectively conduct oxygen |
| 06/14/2001 | US20010003783 In production of (meth)acrylic acid obtained by catalytic gas phase oxidation, by subjecting the discharged gas generated during absorption step to temperature elevation and pressurization during process of discarding waste gases |
| 06/14/2001 | US20010003727 Complex oxide catalyst and process for preparation of acrylic acid |
| 06/14/2001 | CA2410596A1 Methods for producing 3-cyano-and 4-cyano-benzoic acid derivative compounds |
| 06/14/2001 | CA2394636A1 Compound having hydroxycarbonyl-halogenoalkyl side chains |
| 06/14/2001 | CA2393978A1 Method for producing o-chloromethyl benzenecarbonyl chlorides |
| 06/14/2001 | CA2393515A1 Method for producing o-chloromethyl benzoic acid chlorides |
| 06/14/2001 | CA2392761A1 Method for the stereoselective synthesis of cyclic amino acids |
| 06/13/2001 | EP1106599A1 Chromium l-threonate, process for preparation of the same and their use |
| 06/13/2001 | EP1106598A2 High hydrocarbon space velocity process for preparing unsaturated aldehydes and acids |
| 06/13/2001 | EP1106248A1 Complex oxide catalyst and process for preparation of acrylic acid |
| 06/13/2001 | EP1106246A1 Modified carrier, complex oxide catalyst and process for preparation of acrylic acid |
| 06/13/2001 | EP1105400A1 Asymmetric catalysis based on chiral phospholanes |
| 06/13/2001 | EP1105367A1 Substituted cinnamic acids and cinnamic acid esters |
| 06/13/2001 | EP1105365A1 Method for producing acrolein and/or acrylic acid from propane |
| 06/13/2001 | EP1105214A1 Molybdenum-vanadium based catalyst for low temperature selective oxidation of propylene, methods of making and using the same |
| 06/13/2001 | EP0906274B1 Process for manufacturing sulphates of longer chain branched alkanols and alkoxylated alkanols |
| 06/13/2001 | EP0877724B1 Process for making dihalodifluoromethanes and their homologues |
| 06/13/2001 | EP0572628B2 Process for preparing purified 2,6-naphthalenedicarboxylic acid |
| 06/13/2001 | DE19959873A1 Oxidationsreaktionen unter Verwendung von gemischtleitenden sauerstoffselektiven Membranen Oxidation reactions using oxygen-selective mixed conducting membranes |
| 06/13/2001 | CN1299373A Process for elective oxidation of primary alcohols |
| 06/13/2001 | CN1299298A Prodn. of unsaturated acids or esters thereof and catalysts therefor |
| 06/13/2001 | CN1298862A Prepn. of (+)-trans-chrysanthemic acid |
| 06/13/2001 | CN1298861A Composite oxide catalyst and method for preparing acrylic acid |
| 06/13/2001 | CN1298860A Process for preparing chloracetic acid by continuous chlorination and its equipment |
| 06/13/2001 | CN1298763A Carrier catalyst and use as hydrocarbon gaseous oxidation |
| 06/13/2001 | CN1067049C Process for producing terephthalic acid |
| 06/13/2001 | CN1067048C Reactive distillation process and equipment for prodn. of acetic acid and methanol from methyl acetate hydrolysis |
| 06/13/2001 | CN1067047C Process for prodn. of carboxylic acid |
| 06/13/2001 | CN1067046C Process for producing highly purified acetic acid |
| 06/13/2001 | CN1067045C Process for carbonylation of alcohol |
| 06/12/2001 | US6245942 Reduction of the carbonyl value of carboxylic acids and derivatives of carboxylic acids and derivatives of carboxylic acids |
| 06/12/2001 | US6245940 Reacting acid derivative of ose with n+1 carbon atoms, having at least one alpha-ketone function, or one of its salts, with hydrogen peroxide in reaction medium without controlling ph to produce acid derivative of ose containing n carbon atoms |
| 06/12/2001 | US6245939 Process for producing highly pure aromatic carboxylic acids |
| 06/12/2001 | US6245936 Process for the selective preparation of a 2-hydroxybenzoic acid and a 4-hydroxybenzaldehyde and derivatives thereof |
| 06/12/2001 | US6245923 Recovery of highly fluorinated carboxylic acids from the gaseous phase |
| 06/12/2001 | CA2194034C Production of terephthalic acid with excellent optical properties through the use of pure or nearly pure oxygen as the oxidant in p-xylene oxidation |
| 06/12/2001 | CA2186058C Industrial process to manufacture aromatic carboxylic acids |
| 06/07/2001 | WO2001040418A1 Method for purifying marine mammal oil enriched in omega 3 fatty acids and compositions comprising same |
| 06/07/2001 | WO2001040159A1 New process |
| 06/07/2001 | WO2001040158A1 Process for the preparation of ethers deriving from hydroxybenzoic acids |
| 06/07/2001 | WO2001040153A1 PROCESS FOR PREPARING OPTICALLY ACTIVE α-HYDROXY ACIDS AND DERIVATIVES THEREOF |