| Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144) |
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| 09/01/1999 | CN1227215A New technique and apparatus for producing chloroacetic acid by intermittent process |
| 09/01/1999 | CN1227132A Distilling apparatus and distilling method |
| 09/01/1999 | CN1044902C Process and apparatus for producing aromatic carboxylic acid |
| 08/31/1999 | US5945567 Fungicidal 2-methoxybenzophenones |
| 08/31/1999 | US5945565 Synthesis of 4-amino-3-chloro-5-(methoxyiminomethyl)benzoyl chloride starting with the conversion of 5-methyl-4-nitro-benzoic acid to 4-nitro-5-(methoxyiminomethyl)-benzoic acid, methyl ester |
| 08/31/1999 | US5945562 Process of preparing perfluoroalkylcarboxylic acid |
| 08/31/1999 | US5945548 Process for the synthesis of α-substituted acrylic acids and their application |
| 08/31/1999 | US5945368 Oxidation catalyst |
| 08/31/1999 | CA2175781C Process for the production of petrochemicals |
| 08/31/1999 | CA2174490C Process for the production of petrochemicals |
| 08/31/1999 | CA2158006C Hydrocarbonylation of dimethyl ether |
| 08/31/1999 | CA2153520C Catalyst systems and process for producing broad molecular weight polyolefin |
| 08/31/1999 | CA2120407C Process for preparing carboxylic acids or corresponding esters in the presence of a rhodium- and iridium-based catalyst |
| 08/26/1999 | WO1999042432A1 A process for the preparation of cyclopropane carboxylic acids |
| 08/26/1999 | WO1999042431A1 Process for preparing (r)-2-bromo-3-phenyl-propionic acid |
| 08/26/1999 | WO1999042430A1 Methods and devices for separating catalyst from oxidation mixtures |
| 08/26/1999 | WO1999019290A3 Lactic acid processing; methods; arrangements; and, products |
| 08/26/1999 | DE19807079A1 Production of acrolein and acrylic acid by catalytic oxidation of propane |
| 08/26/1999 | CA2321001A1 Process for preparing (r)-2-bromo-3-phenyl-propionic acid |
| 08/26/1999 | CA2319564A1 Methods and devices for separating catalyst from oxidation mixtures |
| 08/25/1999 | EP0937702A1 Method of refining benzoic acid |
| 08/25/1999 | EP0937701A1 Process for producing 2,2-bis (hydroxymethyl) alkanoic acid |
| 08/25/1999 | EP0937700A1 Method for production of maleic anhydride |
| 08/25/1999 | EP0937488A2 Distillation method and distillation apparatus |
| 08/25/1999 | EP0937085A1 Magnesium (-)hydroxycitrate, method of preparation, applications, and compositions in particular pharmaceutical containing same |
| 08/25/1999 | EP0937036A1 Substituted 4-biphenyl-4-hydroxybutyric acid derivatives as matrix metalloprotease inhibitors |
| 08/25/1999 | EP0937027A1 Alpha-branched fluoroalkylcarbonyl fluorides and their derivatives |
| 08/25/1999 | EP0937026A1 Production of aromatic carboxylic acids |
| 08/25/1999 | EP0937025A1 Manufacture of adipic acid |
| 08/25/1999 | EP0937024A1 A method for the production of levulinic acid and its derivatives |
| 08/25/1999 | EP0937023A1 Process for the preparation of an aldehyde |
| 08/25/1999 | EP0725847B1 A process for the production of water-soluble salts of carboxylic and amino acids |
| 08/25/1999 | CN1226923A Process for preparing granular microbial biomass and isolation of valuable compounds therefrom |
| 08/25/1999 | CN1226883A Process for separating and purifying alkali metal salts of hydroxynaphthalenecarboxylic acids |
| 08/25/1999 | CN1226550A Process for recovering cobalt and manganese catalysts from production of terephthalic acid |
| 08/25/1999 | CN1044785C Filtration process |
| 08/24/1999 | US5942460 Mixture of acetic acid, an iridium catalyst, methyl iodide with methyl acetate as promoter |
| 08/24/1999 | CA2126365C Recovery of citric acid from impure process streams by addition of strong acids and salts thereof |
| 08/19/1999 | WO1999041225A1 Method and apparatus for recovering terephthalic acid |
| 08/19/1999 | WO1999041223A1 Method for separating maleic anhydride from maleic anhydride-containing mixtures by stripping |
| 08/19/1999 | WO1999041222A1 Process for the purification of polycarboxylic aromatic acids |
| 08/19/1999 | WO1999041221A1 Process for preparing aromatic carboxylic acids with efficient treatments of gaseous effluent |
| 08/19/1999 | WO1999041196A1 Process for producing anionic clays using magnesium acetate |
| 08/19/1999 | WO1999041011A1 Metallic reactor tube with catalytic coating |
| 08/19/1999 | WO1999041005A1 Method for the combinatorial production and testing of heterogeneous catalysts |
| 08/19/1999 | DE19910077A1 Production of carboxylic anhydride or acid by catalytic gas phase oxidation of aromatic hydrocarbon |
| 08/19/1999 | DE19806038A1 Verfahren zur Abtrennung von Maleinsäureanhydrid aus maleinsäureanhydridhaltigen Gemischen durch Strippung Process for the separation of maleic anhydride from maleic anhydride mixtures by stripping |
| 08/19/1999 | DE19805719A1 Array of heterogeneous catalysts, or precursors, each arranged in separate channel, used to screen for activity, selectivity or long-term stability |
| 08/19/1999 | CA2320206A1 Process for preparing aromatic carboxylic acids with efficient treatments of gaseous effluent |
| 08/19/1999 | CA2318114A1 Method for separating maleic anhydride from maleic anhydride-containing mixtures by stripping |
| 08/18/1999 | EP0936209A1 Anhydrous carbonylation process for the production of acetic acid |
| 08/18/1999 | EP0682662B1 Bicyclic carboxylic acid leukotriene b4 antagonists |
| 08/18/1999 | CN1226185A Method and device for oxidizing hydrocarbon to acid |
| 08/18/1999 | CN1044702C Ozonide reducing method |
| 08/18/1999 | CN1044690C Process for recovery of group VIII noble metals |
| 08/17/1999 | US5939586 Esterification of alkyloxybiphenylcarboxylic acid or chloride with purified thionyl chloride heated and distilled in phenol; by-product inhibition of sulfuryl chloride |
| 08/17/1999 | US5939585 Process for the carbonylation of an alcohol |
| 08/17/1999 | US5939584 Salt formation, neutralization; mixing herbicides |
| 08/17/1999 | US5939583 Antiarthritic agents; bone, cardiovascular, brain, nervous system disorders; antitumor and antimetastasis agents |
| 08/17/1999 | US5939582 Reaction control by regulating internal condensation inside a reactor |
| 08/17/1999 | US5939581 Processes for preparing hydrocinnamic acid |
| 08/17/1999 | US5939572 Catalytic oxidation of an olefinic compound |
| 08/12/1999 | WO1999040058A1 Process for treating cobalt catalyst in oxidation mixtures of hydrocarbons to dibasic acids |
| 08/12/1999 | WO1999040057A1 METHOD TO PREPARE α-β UNSATURATED CARBOXYLIC ACIDS |
| 08/12/1999 | WO1999029648A3 Method for producing chlorocarboxylic acid chlorides |
| 08/12/1999 | CA2318741A1 Process for treating cobalt catalyst in oxidation mixtures of hydrocarbons to dibasic acids |
| 08/11/1999 | EP0934920A2 Preparation of hydrogenated compounds using noble metal Raney catalysts |
| 08/11/1999 | EP0934246A1 METHOD FOR PRODUCING $g(a)-ALKOXY-$g(a)-TRIFLUOROMETHYL-ARYL ACETIC ACID ESTERS AND -ARYL ACETIC ACIDS |
| 08/11/1999 | EP0934244A1 Method for selective preparation of a 2-hydroxybenzoic acid and a 4-hydroxybenzaldehyde and derivatives |
| 08/11/1999 | EP0934243A2 Removal of permanganate reducing compounds and alkyl iodides from a carbonylation process stream |
| 08/11/1999 | EP0934241A1 Production of 6-bromo-2-methoxynaphthalene and derivatives |
| 08/11/1999 | EP0934240A1 Production of 6-bromo-2-naphthol and derivatives |
| 08/11/1999 | EP0765347B1 Batch koch carbonylation process |
| 08/11/1999 | CN1225619A Method for removing and treating by-products obtd. when producing acid or methacrylic acids |
| 08/11/1999 | CN1225354A Water separation method for preparing sodium ferulate and sterol using ferulaic acid or ferulate |
| 08/11/1999 | CN1044572C Polymeric carbonylation catalyst system |
| 08/10/1999 | US5936120 For treating human immmunodeficiency virus infection in mammals |
| 08/10/1999 | US5936118 Process for chiral enrichment of optically active carboxylic acids or salts or esters thereof |
| 08/10/1999 | US5936117 In the presence of a catalyst system comprising a group 6 metal, a halide, an alkali metal compound, a quaternary organic salt or compound of a group 15 element, a phosphine or phosphine oxide |
| 08/10/1999 | US5935892 Supported phase catalyst |
| 08/10/1999 | US5935534 Crystallization method |
| 08/05/1999 | WO1999038837A1 Improved method for making mixed high purity (meth)acrylic anhydrides |
| 08/05/1999 | WO1999038836A1 Processes for preparing oxygenates and catalysts therefor |
| 08/05/1999 | WO1999038835A1 Method for producing a purified alkaline metal terephthalate, derived from the products of saponification of polyterephthalates |
| 08/05/1999 | WO1999038834A1 Recovery of acrylic acid from process or waste water streams |
| 08/05/1999 | WO1999038832A1 Improved separation processes |
| 08/05/1999 | WO1999038831A1 Improved separation processes |
| 08/05/1999 | WO1999011256A8 L-threonate ferrous, as well as pharmaceutical composition and use for improving and treating human anemia thereof |
| 08/05/1999 | CA2319152A1 Processes for preparing oxygenates and catalysts therefor |
| 08/04/1999 | EP0933417A1 Unsulfurized, alkali metal-free, additive for lubricating oils |
| 08/04/1999 | EP0933349A1 Method for producing optically active chrysanthemic acid |
| 08/04/1999 | EP0933348A1 Method for making bis-xylenols containing acid moieties |
| 08/04/1999 | EP0933347A1 Process for the preparation of a carboxylic acid |
| 08/04/1999 | EP0932595A1 Removal of carbonyl impurities from a carbonylation process stream |
| 08/04/1999 | EP0932594A2 A process for the recovery of lactic acid |
| 08/04/1999 | EP0932593A2 A process for the recovery of lactic acid |
| 08/04/1999 | EP0932592A2 Process for the recovery of lactic acid |
| 08/04/1999 | EP0799179B1 Purification process for aromatic dicarboxylic acids |
| 08/04/1999 | EP0789682B1 Catalyst recovery and dialkyl ester synthesis from an adipic acid synthesis waste stream |
| 08/04/1999 | EP0763008B1 Process for the removal of iodine from carboxyl products |