| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 04/11/2000 | US6048986 Dehydration of difluoropyromellitic acid to form difluoropyromellitic dianhydride |
| 04/11/2000 | US6048952 Perfluoroalkyl halides and derivatives |
| 04/11/2000 | CA1340952C Chemiluminescent 1,2-dioxetane compounds |
| 04/06/2000 | WO2000018819A1 Processes for producing polyester and producing sorbic acid |
| 04/06/2000 | WO2000018717A1 Method for manufacturing alkali metal or alkaline-earth metal formate |
| 04/06/2000 | WO2000018716A1 Process for the preparation of sorbic acid or salts thereof |
| 04/06/2000 | WO2000018715A1 METHOD FOR PRESSURELESS PRODUCTION OF α,α-DIMETHYLPHENYL ACETIC ACID FROM α,α-DIMETHYL BENZYL CYANIDE |
| 04/06/2000 | WO2000001647A3 Production of organic compounds which are low in fluoride |
| 04/06/2000 | WO1999067192A3 PROCESS FOR THE SOLID PHASE SYNTHESIS OF ALDEHYDE, KETONE, OXIME, AMINE, HYDROXAMIC ACID AND α,β-UNSATURATED CARBOXYLIC ACID AND ALDEHYDE COMPOUNDS |
| 04/06/2000 | CA2344702A1 Method for manufacturing alkali metal or alkaline-earth metal formate |
| 04/05/2000 | EP0990636A1 Single reactor process for preparing acrylic acid from propylene having improved capacity |
| 04/05/2000 | EP0989969A1 Process for the manufacture of carboxylic acids |
| 04/05/2000 | EP0877728B1 Process for the carbonylation of acetylenically unsaturated compounds |
| 04/05/2000 | EP0876324B1 Process for manufacturing terephthalic acid |
| 04/05/2000 | EP0842137B1 A process for the preparation of cyclopropane carboxylic acids and intermediates therefor |
| 04/05/2000 | EP0805793B1 Preparation of optically active aliphatic carboxylic acids |
| 04/05/2000 | EP0799177B1 Process for preparing solid, free-flowing water-soluble salts of aryloxy-c 1-c 4-alkane carboxylic acids |
| 04/05/2000 | CN1249739A Method for extracting (meth) acrylic acid |
| 04/05/2000 | CN1249301A Process for preparing sodium lactate |
| 04/05/2000 | CN1249300A Improved efficiency single reactor method for producing acrylic acid from propene |
| 04/05/2000 | CN1249299A Process for producing acetic acid |
| 04/04/2000 | US6046357 Stabilization and transport of α,β-unsaturated carboxylic acid and removal of stabilizer |
| 04/04/2000 | US6046343 Prevention of catalyst attrition and tar formation in manufacture of maleic anhydride |
| 04/04/2000 | CA2193959C Process for improving enantiomeric purity of aldehydes |
| 03/30/2000 | WO2000017147A1 5,6-dihydronaphthalenyl derivatives having retinoid-like activity |
| 03/30/2000 | WO2000017146A1 Process for the manufacture of quaternary carboxylic acids |
| 03/30/2000 | WO2000017145A1 Process for the preparation of sorbic acid |
| 03/30/2000 | WO2000017144A1 Process for the preparation of sorbic acid |
| 03/30/2000 | CA2344310A1 5,6-dihydronaphthalenyl derivatives having retinoid-like activity |
| 03/29/2000 | EP0989105A1 Process for producing aromatic compounds via treatment with supercritical water |
| 03/29/2000 | EP0988273A1 Polymerization inhibition of acrylates using blends of nitroxides |
| 03/29/2000 | EP0988272A1 Method for selective catalytic oxidation of olefins into corresponding carboxylic acids with c=c bond scission |
| 03/29/2000 | EP0966421A4 A method for purification of acids for use in semiconductor processing |
| 03/29/2000 | CN1248967A Process for the preparation of stable, non-hygroscopic salts of L--) carnitine and alkanoyl L(-) carnitines |
| 03/29/2000 | CN1248929A Method for producing acid phthalic and an appropriate shell catalyst containing |
| 03/29/2000 | CN1050838C Preparation process for lactone of IR, cis 2,2-dimethyl-3-formyl-cyclopropane-1-carboxylic acid and halogenated intermediates |
| 03/29/2000 | CN1050833C Process for the preparation of acid chloride |
| 03/29/2000 | CN1050779C Multimtal oxide composition |
| 03/28/2000 | US6043392 Contacting calcium salt of an acid with carbon dioxide and low molecular weight(mw) tertiary amine to form calcium carbonate precipitate and amine-acid complex, exchanging with high mw complex and thermally decomposing the complex |
| 03/28/2000 | US6043184 Alkanes are converted to unsaturated carboxylic acids by contacting an alkane with an oxidizing agent and a heteropolyacid supported on wide pore polyoxometallate salts. |
| 03/28/2000 | US6042718 Process for removing water from a water-containing crude oil |
| 03/28/2000 | US6042697 Recovering 9,11-octadecadienoic acid and azeotrope forming agent as overhead, 10,12-octadecadienoic acid as bottoms |
| 03/28/2000 | CA2149059C Terephthalic acid production using evaporative cooling |
| 03/23/2000 | WO2000015601A1 Process for preparing carboxylic acids |
| 03/23/2000 | WO2000015598A1 Method for separating and purifying carboxylic acid derived from the direct oxidation of a hydrocarbon |
| 03/23/2000 | WO2000015597A1 Method for crystallising carboxylic acid |
| 03/23/2000 | WO2000015596A1 Processes for the preparation of fluorinated benzoic acids |
| 03/23/2000 | WO2000015594A1 Process for making aromatic aldehydes using ionic liquids |
| 03/23/2000 | WO2000015593A2 Process for making aromatic aldehydes |
| 03/23/2000 | WO2000015340A1 Process to separate rhodium from an organic mixture |
| 03/23/2000 | CA2343400A1 Process for making aromatic aldehydes |
| 03/23/2000 | CA2343309A1 Process for making aromatic aldehydes using ionic liquids |
| 03/23/2000 | CA2343013A1 Method for separating and purifying carboxylic acid derived from the direct oxidation of a hydrocarbon |
| 03/23/2000 | CA2343012A1 Method for crystallising carboxylic acid |
| 03/22/2000 | EP0987245A1 A method of preparing 2- and 4-hydroxymandelic acid |
| 03/22/2000 | EP0987057A1 Catalytic vapor-phase oxidation method and shell-and-tube reactor |
| 03/22/2000 | EP0986599A2 Process for the preparation of copolyesters |
| 03/22/2000 | EP0986532A1 Method for purifying lactic acid |
| 03/22/2000 | EP0986531A1 Catalytic oxidative process for preparing carboxylic acids from alcohols or aldehydes |
| 03/22/2000 | EP0986434A1 Process for producing a vanadium phosphorus oxide catalyst |
| 03/22/2000 | CN1248239A Method for isolating 3-[2-chloro-4-(trifluoromethyl) -phenoxyl]-benzoic acid |
| 03/22/2000 | CN1248238A Production of terephthalic acid |
| 03/22/2000 | CN1248237A Process for manufacture of carboxylic acids |
| 03/22/2000 | CN1247853A Purifying propenoic acid by vacuum evaporating crystalization |
| 03/22/2000 | CN1247852A Method for preparing and purifying acetate by reaction distillation effect |
| 03/22/2000 | CN1050597C Process for synthesizing cyclopropyl carboxylic ester |
| 03/22/2000 | CN1050596C Triterpenoid of iso-ailanthic acids and extracting process thereof |
| 03/21/2000 | US6040478 Contacting a dihydric phenol with carbon dioxide in the presence of an alkali metal carbonate and alkali metal formate at a temperature above the melting point of the formate (solvent); efficiency; low pressure; kinetics |
| 03/21/2000 | US6040474 Integrated process for the production of vinyl acetate and/or acetic acid |
| 03/21/2000 | US6040460 High productivity process to produce maleic anhydride from n-butane |
| 03/21/2000 | US6039902 Methods of recycling catalyst in oxidations of hydrocarbons |
| 03/16/2000 | WO2000014177A1 Vinyl monomer polymerization inhibition using hindered hydroxylamines |
| 03/16/2000 | WO2000014080A1 Geranic acid derivatives |
| 03/16/2000 | WO2000014052A1 Microbial process for the preparation of acetic acid as well as solvent for its extraction from the fermentation broth |
| 03/16/2000 | WO2000014047A1 Process for the production of acetic acid |
| 03/16/2000 | WO2000013793A1 Method for producing catalysts for synthesising maleic anhydride by means of gas phase oxidation |
| 03/16/2000 | WO2000000284A3 Catalyst systems for the one step gas phase production of acetic acid from ethylene |
| 03/16/2000 | CA2343022A1 Vinyl monomer polymerization inhibition using hindered hydroxylamines |
| 03/15/2000 | EP0985726A1 Production of high BN alkaline earth metal single-aromatic ring hydrocarbyl salicylate-carboxylate |
| 03/15/2000 | EP0985653A1 Carbonylation process |
| 03/15/2000 | EP0985648A1 Gas-phase oxidization process and process for the preparation of phthalic anhydride |
| 03/15/2000 | EP0985449A1 Process to separate rhodium from an organic mixture |
| 03/15/2000 | EP0759888B1 Process for the preparation of layered double hydroxides. |
| 03/15/2000 | CN1247187A Process for preparing dieneketonol acetate |
| 03/15/2000 | CN1247186A Method for continuously reclaimating (methyl) propenoic acid |
| 03/15/2000 | CN1247185A Method for continuously reclaimating (methyl) propenoic acid |
| 03/15/2000 | CN1247184A Method for continuously reclaimating (methyl) propenoic acid |
| 03/15/2000 | CN1247183A Carbonylation method |
| 03/14/2000 | US6037493 Optically active diphosphines, preparation thereof according to a process for the resolution of the racemic mixture and use thereof |
| 03/14/2000 | US6037492 Selective extractions and fractionation of resulting mixtures with the use of solvents of differing polarities; obtain purities in excess of 80% |
| 03/14/2000 | US6037491 Maintaining the reaction rate or reactivity in a desired range to efficiently oxidize hydrocarbon to a diacid which can be reacted with a diol, diamine, or diamide to form polyesters, polyamides, or polyimides respectively |
| 03/14/2000 | US6037482 Process for catalytic addition of nucleophiles to alkynes or allenes |
| 03/14/2000 | US6037477 Oxidation process of ethers |
| 03/14/2000 | US6037472 For treating disease-states characterized by excessive activity of matrix metalloproteases such as rheumatoid arthritis, osteoarthritis, periodontal disease, aberrant angiogenesis, tumor invasion and metastasis |
| 03/14/2000 | US6037301 Hydrogenation catalysts containing boron, group viii metal |
| 03/09/2000 | WO2000012458A1 Method for preparation of low molecular weight polyethylene glycol-carboxylic acids |
| 03/09/2000 | WO2000012214A1 Multilayered shell catalysts for catalytic gaseous phase oxidation of aromatic hydrocarbons |
| 03/09/2000 | WO2000012208A1 High surface area sol-gel route prepared oxidation catalysts |
| 03/09/2000 | DE19840224A1 Verfahren zur Herstellung von Katalysatoren für die Synthese von Maleinsäureanhydrid durch Gasphasenoxidation A process for the preparation of catalysts for the synthesis of maleic anhydride by the gas phase oxidation |
| 03/08/2000 | EP0983792A1 Carbonylation process |