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)
12/1999
12/09/1999DE19824532A1 Verfahren zur Herstellung von Schalenkatalysatoren für die katalytische Gasphasenoxidation von aromatischen Kohlenwasserstoffen und so erhältliche Katalysatoren A process for producing coated catalysts for the catalytic gas-phase oxidation of aromatic hydrocarbons and as available catalysts
12/09/1999CA2334105A1 Process for the recovery of fluorinated alkanoic acids from wastewater
12/09/1999CA2333706A1 Method for preparing purified terephthalic acid and isophthalic acid from mixed xylenes
12/09/1999CA2333664A1 Powdery, solid rare earth carboxylates with improved solubility
12/09/1999CA2331817A1 Method for producing hexanediol-1,6
12/09/1999CA2330153A1 Hydroformylation of olefins using supported bis(phosphorus) ligands
12/08/1999EP0962814A1 Recording material with improved shelf-life producing prints upon thermal development with improved archivability
12/08/1999EP0962812A1 Aqueous dispersion of fatty acid silver salt particles, method for redispersing fatty acid silver salt particles, photothermographic light-sensitive material, and method for producing the same
12/08/1999EP0962443A1 Citric acid enriched in alkali or alkaline-earth ions
12/08/1999EP0962442A1 Process for producing aromatic carboxylic acid
12/08/1999EP0962253A2 A process for preparing a multi-metal oxide catalyst
12/08/1999EP0961765A2 Preparation of carboxylic compounds and their derivatives
12/08/1999EP0961763A1 Preparation of olefinic compounds and carboxylic derivatives thereof
12/08/1999CN1237956A Improved method for purifying acrylic acid
12/08/1999CN1237951A Gas-phase oxidization process and process for preparation of phthalic anhydride
12/08/1999CN1237920A Production of aromatic carboxylic acids and recovery of Co/Mn cattalyst from ash
12/08/1999CN1237569A Process for rectificative isolation of (meth) acrylic acid
12/07/1999US5998660 Process for preparing carboxylic acids
12/07/1999US5998657 Process for the generation of α, β-unsaturated carboxylic acids and esters using niobium catalyst
12/07/1999US5998646 Monomer for marine paint
12/07/1999US5998572 Methods and devices for controlling the oxidation of a hydrocarbon to an acid by regulating temperature/conversion relationship in multi-stage arrangements
12/02/1999WO1999061434A1 Method for producing phthalic anhydride by means of catalytic vapor-phase oxidation of o-xylol/naphthalene mixtures
12/02/1999WO1999050221A3 Method for producing (meth)acrylic acid and (meth)acrylic acid esters
12/02/1999DE19826614A1 Verfahren zur Herstellung von Hexandiol-1,6 A process for preparing hexanediol-1,6
12/02/1999DE19825389A1 Catalytically active oxovanadium diphosphate for partial oxidation of hydrocarbon, especially of n-butane to maleic anhydride
12/02/1999DE19824121A1 Herstellung optisch aktiver Phospholane, deren Metallkomplexe und Anwendung in der asymmetrischen Synthese Preparation of optically active phospholanes, their metal complexes and application in asymmetric synthesis
12/02/1999DE19823275A1 Verfahren zur Herstellung von Phthalsäureanhydrid durch katalytische Gasphasenoxidation von x-Xylol-/-Naphthalin-Gemischen A process for preparing phthalic anhydride by catalytic gas-phase oxidation of x-xylene - / - naphthalene mixtures
12/01/1999EP0960875A1 Process for the preparation of saturated carboxylic acids with 1-4 C-atoms
12/01/1999EP0960874A1 Method of production of acetic acid by gas phase oxidation of saturated C4-hydrocarbons and their mixtures with unsaturated C4-hydrocarbons
12/01/1999EP0960090A1 Co-production of perfluoromethyl perfluorovinyl ether and perfluoroethyl perfluorovinyl ether
12/01/1999EP0783480B1 Processes for the preparation of cyclopropanecarboxylic acid and derivatives thereof
12/01/1999EP0769000B1 A process (ii) for making potassium formate
12/01/1999EP0755517B1 A method for detecting the presence of a mycobacterium species and a kit and antibodies for use therein
12/01/1999CN1236771A Process for preparing acetate from gas phase oxidation saturated C4-hydrocarbons and mixture of same and unsaturated C4-hydrocarbons
12/01/1999CN1236770A Process for preparing saturated carboxylicacids having from 1 to 4 carbon atoms
12/01/1999CN1236769A Use of pentavalent group VA oxides in acetic acid processing
12/01/1999CN1236672A Process for preparing catalyst
11/1999
11/30/1999US5994592 Process for producing 2,2'-bis(hydroxymethyl)alkanal and 2,2'-bis(hydroxymethyl)alkanoic acid
11/30/1999US5994580 Process for producing acrylic acid
11/30/1999US5994567 Liquid phase oxidation process
11/30/1999US5994533 Process for the recovery of tartaric acid and other products from tamarind pulp
11/30/1999US5994110 Methods for direct synthesis of compounds having complementary structure to a desired molecular entity and use thereof
11/30/1999CA2035752C Catalytic system and application to the oxydehydrogenation of saturated carboxylic acids
11/25/1999WO1999060003A1 Novel furylphosphines and organometallic complexes containing them
11/25/1999WO1999059954A1 Process for the preparation of aromatic acids
11/25/1999WO1999059953A1 Controlled oxidation of hydrocarbons to intermediate oxidation products
11/25/1999WO1999059952A1 Method of preparing alkyl carboxylic acids by carboxylation of lower alkanes methane
11/25/1999WO1999059941A1 Method for orthometalation of a carbocyclic aromatic derivative bearing at least an electron donor group
11/25/1999DE19823088A1 Production of saturated carboxylic acids by gas-phase oxidation of butane and/or butenes
11/25/1999DE19823052A1 Schalenkatalysator zur Herstellung von Essigsäure durch Gasphasenoxidation von gesättigten und/oder ungesättigten C4-Kohlenwasserstoffen A coated catalyst for preparing acetic acid by gas-phase oxidation of saturated and / or unsaturated C 4 -hydrocarbons
11/25/1999CA2333183A1 Novel furylphosphines and organometallic complexes containing them
11/25/1999CA2332765A1 Method of preparing alkyl carboxylic acids by carboxylation of lower alkanes methane
11/25/1999CA2331663A1 Controlled oxidation of hydrocarbons to intermediate oxidation products
11/24/1999EP0959069A1 A process for the preparation of 13-CIS-retinoic acid
11/24/1999EP0959062A1 Method for production of acrolein and acrylic acid
11/24/1999EP0958274A1 Woolgrease
11/24/1999EP0958272A1 Preparation of alpha, beta-unsaturated carboxylic acids and esters in the presence of an oxide of niobium as catalyst
11/24/1999EP0783477B1 A process for producing metal carboxylates for use as animal feed supplements
11/24/1999CN1235956A Method for extracting and separating alpha-linolenic acid
11/24/1999CN1235955A Purifying technology for aromatic carboxylic acid
11/24/1999CN1235953A Method for production of acrolein and acrylic acid
11/24/1999CN1235871A Lower alkank oxidative dehydrogenation catalysts and process for producing olefins
11/24/1999CN1046639C Method for deagglomerating and re-exposing catalyst in a fluid bed reactor
11/24/1999CN1046638C Catalytic decomposition process of nitrous oxide pure or contained in gaseoud mixtures
11/23/1999US5990363 Method for oxidizing alkanes using novel porphyrins synthesized from dipyrromethanes and aldehydes
11/23/1999US5990351 Process for separating pivalic acid from spent reaction mixtures
11/23/1999US5990348 Conversion of alkanes to unsaturated carboxylic acids over heteroploy acids supported on polyoxometallate salts
11/23/1999US5990347 Process for preparing a carboxylic acid
11/23/1999US5990343 Purification the products from hydrolysis and cracking, by distilling to separate butyl acrylate stream from acrylic acid
11/23/1999US5990330 Salt formation of highly fluorinated carboxylic acids or their ammonium salt with alkaline scrubbing agent
11/21/1999CA2271397A1 A process for preparing a catalyst
11/18/1999WO1999058513A1 Novel intermediates and processes for the preparation of optically active octanoic acid derivatives
11/18/1999WO1999058486A1 New compounds, their preparation and use
11/18/1999WO1999050223A3 Process for the preparation of hpb esters
11/18/1999WO1999050218B1 Process for production of acetic acid
11/18/1999CA2331548A1 Novel intermediates and processes for the preparation of optically active octanoic acid derivatives
11/17/1999EP0957078A1 Process for the preparation of shikimic acid and its derivatives
11/17/1999EP0957077A1 Process for the preparation of acetic acid in the presence of pentavalent oxides of group VA
11/17/1999CN1235593A Production of aromatic carboxylic acids
11/17/1999CN1235592A Manufacture of adipic acid
11/17/1999CN1235151A Process for preparation of shikimic acid and its derivatives
11/16/1999US5986133 Recovery of fermentation salts from dilute aqueous solutions
11/16/1999US5986130 Process for the preparation of cyclopropane carboxylic acids and intermediates therefor
11/16/1999US5986129 Multistage process of diazotization, acidification, hydrolysis and acylation
11/16/1999US5986116 Method for producing conjugated linoleic acid
11/16/1999US5986113 Process for manufacturing polyene esters and acids
11/16/1999US5986110 Process for the selective oxidation of hydrocarbons
11/16/1999CA2046163C Process for producing purified terephthalic acid
11/16/1999CA1340822C Deicing compositions comprising alkaline earth or alkali metal carboxylates and processes for their production
11/11/1999WO1999057158A1 Process for selective oxidation of primary alcohols
11/11/1999WO1999057090A1 Process for purifying isophthalic acid by crystallization
11/11/1999WO1999057084A1 Method for producing substituted benzenes
11/11/1999DE3348492C2 Di:hydro-poly:prenyl alcohol and ester and ether derivs.
11/11/1999DE19819884A1 Recovery of tartaric acid from material containing K hydrogen tartrate (KHT), e.g. wine yeast or tartar
11/11/1999DE19646378C2 Verfahren und Vorrichtung zur Rückgewinnung von Dicarbonsäuren und Diolen aus Polyesterabfällen, insbesondere aus Polyethylenterephthalat(PET)-Abfällen beliebigen Polymerisationsgrades Method and apparatus for the recovery of dicarboxylic acids and diols of polyester waste, in particular from polyethylene terephthalate (PET) including wastes any polymerization degree
11/11/1999CA2331805A1 Process for purifying isophthalic acid by crystallization
11/10/1999EP0955286A1 Dihydro- or tetrahydronaphthalene derivatives having (anti-)estrogen activity
11/10/1999EP0954375A1 Novel supported catalysts
11/10/1999CN1234388A Process for preparing fatty acyl lactate
11/10/1999CN1234387A One-step lactic acid purification process for preparing high-purity heat-stable lactic acid and apparatus thereof
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