Patents
Sitemap › C07 - Organic chemistry › C07C - Acyclic or carbocyclic compounds › C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides
Patents for C07C 51 - Preparation of carboxylic acids or their salts, halides, or anhydrides (43,144)
12/1998
12/10/1998DE19723949A1 Verfahren zur Regenerierung eines Zeolith-Katalysators A process for regenerating a zeolite catalyst
12/10/1998DE19723807A1 Verfahren zur Herstellung von Copolyestern A process for preparing copolyesters
12/10/1998CA2293351A1 Method for regenerating a zeolitic catalyst
12/10/1998CA2260846A1 Process for production of aromatic tricarboxylic acids
12/09/1998EP0882508A2 Ion-exchange resins, their preparation and uses
12/09/1998EP0882009A1 Production of aromatic polycarboxylic acids
12/09/1998EP0882008A1 Process for isomerically selective hydrocarboxylation of olefins
12/09/1998CN1201028A Tetrahydroxyl phenylpropenoic acid and chemical compound thereof
12/09/1998CN1201026A Process for preparing 2-methyl butanol/butanoic acid with opticity
12/08/1998US5847204 Process for producing an iridium solution and use of same as catalyst
12/08/1998US5847203 Bromine catalysed oxidation processes
12/08/1998US5847202 Racemization process for optically active carboxylic acids or salts or esters thereof
12/08/1998US5847163 Process for the transformation of a vanadium/phosphorus mixed oxide catalyst precursor into the active catalyst for the production of maleic anhydride
12/08/1998US5847117 Reagent and catalytic process useful for cleaving a protected functional group
12/08/1998US5846794 Process for the preparation of D-arabitol
12/08/1998US5846581 Chromium (III) salts of short chain fatty acids composition for use in animal feeds
12/08/1998US5846498 Reactor system
12/02/1998EP0881208A1 Naphthalenedicarboxylic acid particles and process for the production thereof
12/02/1998EP0880398A2 Process for separating substances using a suitable membrane
12/02/1998EP0768917B1 Process for preparing carboxylic acid salts and catalysts useful in such process
12/02/1998CN1200719A Process for improving productivity of a carbonylation catalyst solution by removing corrosion metals
12/02/1998CN1200367A Method for preparing 4-hydroxy phenylpropionic acid compound
12/02/1998CN1200366A Neo-L-threonic acid derivatives
12/02/1998CN1040977C Method for prepn. of hexandioic acid
12/01/1998US5843863 Process for improving flow characteristics of crystalline ibuprofen
11/1998
11/26/1998WO1998052900A1 Process for preparing purified aromatic polycarboxylic acids
11/26/1998DE19747790C1 Efficient continuous concentration of dilute aqueous soluble of hydroxy-carboxylic acid
11/25/1998EP0879813A1 Process of preparation of cyclopropane carboxylic acids
11/25/1998EP0879641A1 Hydrogenation catalyst comprising palladium deposited on activated carbon
11/25/1998EP0879222A1 Method for preparation of perfluoroalcanecarboxylic and perfluoroalcanesulfonic acids
11/25/1998EP0879221A1 Production of aromatic carboxylic acids
11/24/1998US5840975 Process for preparing nucleus-halogenated benzoyl chlorides
11/24/1998US5840973 Process for producing a polyoxyalkylenecarboxylic acid
11/24/1998US5840971 Process for the production of acetic acid by controlled oxidation of ethanol
11/24/1998US5840970 Contacting slurry containing naphthalenedicarboxylic acid and impurities comprising heavy metal catalyst residues complexed with trimellitic acid in acetic acid with acetic anhydride
11/24/1998US5840969 Carbonylating methanol or methanol/dimethyl ether formed in the process stream
11/24/1998US5840968 Filtering liquid dispersion, dissolving filter cake in selective crystallization solvent, crystallizing, separating product, redissolving, recrystallizing, washing with water, soaking in water, filtering, drying
11/24/1998US5840965 Dissolving crude acid in aqueous medium, hydrogenating impurities at elevated temperature and pressure, reducing temperature and pressure to form slurry, filtering purified crystals, washing, recycling aqueous medium, wash liquor
11/24/1998US5840964 Second order resolution of ketals
11/24/1998US5840958 1S to 1R Epimerizations of pyrethroid intermediates
11/24/1998US5840944 Method to produce highly pure eicosapentaenoic acid or its ester
11/24/1998US5840942 Catalyzed synthesis of aryl-substituted fatty acids and fatty esters and compositions related thereto
11/24/1998US5840714 Inclusion complexes of racemic ibuproxam and of optically active ibuproxam with cyclodextrin derivatives, pharmaceutical preparations containing said inclusion complexes and methods for using same
11/24/1998US5840643 Recovery of oxidation catalysts used for the production of trimellitic acid
11/24/1998CA2141333C Hydrogenation in a plate heat exchanger
11/19/1998WO1998051654A1 Catalytic oxidative process for preparing carboxylic acids from alcohols or aldehydes
11/19/1998DE19727636C1 Direct preparation of 2-alkyl-carboxylic acid and 2-alkyl-malonic di:ester compounds by one-pot process
11/19/1998CA2288688A1 Catalytic oxidative process for preparing carboxylic acids from alcohols or aldehydes
11/18/1998EP0878534A2 Process for the continuous catalyst conversion of organic compounds
11/18/1998EP0878459A1 Process for preparing 9,10-dihydro-9,10 ethanoanthracen-9-carboxylic acids by oxidation of the corresponding aldehyds
11/18/1998EP0878458A1 Oxidation process of ethers
11/18/1998EP0877728A1 Process for the carbonylation of acetylenically unsaturated compounds
11/18/1998EP0877727A1 Integrated process for the production of vinyl acetate and/or acetic acid
11/18/1998EP0877724A1 Process for making dihalodifluoromethanes and their homologues
11/18/1998EP0745116B1 Hydrogenation of unsaturated fats, fatty acids or fatty acid esters
11/18/1998CN1040745C Process for preparing rareearth ammonium double oxalate
11/12/1998WO1998050150A1 Process for preparing carboxylic acid salts and catalysts useful in such process
11/12/1998CA2287300A1 Ligated platinum group metal catalyst complex and improved process for catalytically converting alkanes to esters and derivatives thereof
11/11/1998EP0877015A1 Process for the preparation of cyclopropanecarboxamide
11/11/1998EP0877012A2 Process for the production of high-purity dimethyl 2,6-naphthalenedicarboxylate and naphthalenedicarboxylic acid
11/11/1998EP0877011A1 Processes for producing tetra-fluorophthalic anhydride and fluorobenzoic acids
11/11/1998EP0876324A1 Process for manufacturing terephthalic acid
11/11/1998EP0876322A1 Improved metal-ligand complex catalyzed processes
11/11/1998EP0876212A1 Molybdenum-modified vanadium-phosphorus oxide catalysts for the production of maleic anhydride
11/11/1998EP0714385B1 Hydroformylation process
11/11/1998EP0646042B1 Electrochemical method for the preparation of adipic acid
11/11/1998EP0639404B1 Process for producing methacrylic acid synthesis catalyst
11/11/1998CN1198732A Integrated process for the production of vinyl actate and/or acetic acid
11/11/1998CN1198730A Method for inhibiting polymerization of vinyl compounds
11/10/1998US5834622 Process for the carbonylation of a carbonylatable reactant
11/10/1998US5834468 Substituted aryl and heteroaryl compounds as E-type prostaglandin antagonists
11/05/1998WO1998049130A2 Hydroxynaphthoic acids and derivatives
11/05/1998DE19718608A1 Continual process to make lactic acid
11/05/1998CA2288199A1 Hydroxynaphthoic acids and derivatives
11/04/1998EP0875517A1 Novel homopolymers of propylene exhibiting more than 50% syndiotacticity and more than 50 wt-% xylene solubles
11/04/1998EP0875495A1 New derivatives of salicylic acid and their use in cosmetic and/or dermatological compositions
11/04/1998EP0875267A1 Process for crystallisation by vaporisation and condensation of the vapors
11/04/1998EP0874797A1 Processes employing indicator ligands
11/04/1998EP0665210B1 Process for producing acetic anhydride alone or both of acetic anhydride and acetic acid
11/04/1998CN1197789A Process for producing purified terephthalic acid
11/03/1998US5831124 Purification of acrylic acid and methacrylic acid
11/03/1998US5831122 Process and extractant composition for extracting acids
11/03/1998US5831121 Process for the production of 3-hydroxy propionic acid or a salt thereof
11/03/1998US5831120 Process for the production of acetic acid
11/03/1998US5831118 Epimerization of 2- or 4- substituted cyclohexanecarboxylic acids
11/03/1998US5831116 Partially oxidizing methanol
11/03/1998US5831078 Process for the production of arabinitol
11/03/1998US5831043 Process for the oxidation of sugars
11/03/1998US5830935 Color of basic metal organic salts by employing C7 -C17 alkyl glycidyl esters and stabilized halogen-containing polymers
11/03/1998US5830832 Overbased carboxlates
11/03/1998US5830429 Zeolite impregnated with titanium, vanadium, aluminum or boron; alkane oxidation catalyst
10/1998
10/29/1998WO1998047862A1 3-cyano-2,4,5-trifluoro-benzoyl fluoride and intermediate products for the production thereof
10/29/1998WO1998047853A1 Process for the preparation of trifluoroethoxyarenecarboxylic acids
10/29/1998WO1998047852A1 Method for selective catalytic oxidation of olefins into corresponding carboxylic acids with c=c bond scission
10/29/1998WO1998047851A1 Method for producing acetic acid in a reactor cascade
10/29/1998WO1998047850A1 Process and catalyst for preparing acetic acid by catalytic oxidation of ethane
10/29/1998WO1998047849A2 Salt of boehmite alumina and processes for dyeing fibers, for treating a dye waste stream and for removing contaminants from a municipal waste treatment stream
10/29/1998DE19717344A1 Production of catalyst for selective oxidation of aromatic hydrocarbon
10/29/1998DE19717231A1 3-Cyano-2,4,5-trifluor-benzoylfluorid 3-cyano-2,4,5-trifluoro-benzoyl fluoride
10/29/1998DE19717179A1 Verfahren zur selektiven katalytischen Oxidation von Olefinen zu den entsprechenden Carbonsäuren unter C=C-Bindungsspaltung A process for the selective catalytic oxidation of olefins to the corresponding carboxylic acids in C = C bond cleavage
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