Patents
Patents for C07C 41 - Preparation of ethers; Preparation of compounds having groups, groups or groups (17,242)
08/1992
08/20/1992WO1992013819A1 Process for producing branched dialkyl ethers
08/19/1992EP0499451A1 Synthesis of 1-amino-anthraquinone
08/19/1992EP0499055A2 Process for the preparation of pyrocatechols
08/19/1992EP0498975A1 Tertiary amyl methyl ether from olefin streams
08/19/1992EP0498969A1 Treatment of lower glycol-containing operative fluids
08/19/1992EP0498817A1 Process for producing fluorinated organic compounds.
08/18/1992CA1306470C Method of manufacturing a modified polyhydroxy compound
08/13/1992DE4103489A1 Verfahren zur herstellung von verzweigten dialkylethern Process for the preparation of branched dialkyl ethers
08/11/1992US5138102 Reactor quenching for catalytic olefin hydration in ether production
08/11/1992US5138001 Vinylphenyl compound, process for the production thereof, polymerizable composition containing same, and crosslinked polymer formed therefrom
08/11/1992US5137605 Cooling, supersaturation, recyclicling
08/06/1992WO1992012951A1 Method of preparing fatty-alcohol polyalkylene-glycol ethers
08/06/1992WO1992012950A1 Method of preparing fatty-alcohol polyalkylene-glycol ethers
08/06/1992DE4113424C1 Prepn. of tert. tri- or tetra- fluoro derivs. of benzyl alcohol derivs. - from corresp. tetra- or penta- fluoro deriv., obtd. in higher yields with little formation of by-prods
08/05/1992EP0497680A1 Process for the separation of ethyl tert-butyl ether and ethanol
08/04/1992US5136115 Reacting with chloroalkyl ether and hydrogen bromide using hydrogen sulfate catalyst and no solvent
08/04/1992US5136114 Process for the preparation of geminal diarylalkanes, new geminal diarylalkanes and alk(en)ylated aromatic compounds
08/04/1992US5136108 Production of oxygenated fuel components
08/04/1992US5136107 Process for halogenating aromatic compounds
08/04/1992US5136106 Heterogeneous alkoxylation using anion-bound metal oxides
08/04/1992US5135683 Process for producing a deprotected alkoxylated polyol
08/04/1992CA1305957C Phosphonite-and phosphinite-promoted ruthenium - cobalt catalysts for the dealkoxyhydroxymethylation of acetals to form glycol ethers
07/1992
07/29/1992EP0496090A2 Process for the separation of a mixture of water, methylethylketone and ethyleneglycol-mono-n-butylether in water and methylethylketone with ethyleneglycol-mono-n-butylether
07/23/1992DE4101742A1 Prepn. of fatty alcohol poly:alkylene glycol ether - by reacting fatty alcohol with ethylene oxide and/or propylene oxide in presence of laminar cpd., addn. of coagulating agent and opt. base, and sepn., of solid
07/23/1992DE4101740A1 Verfahren zur herstellung von fettalkoholpolyalkylenglycolethern A process for preparing fettalkoholpolyalkylenglycolethern
07/22/1992EP0495425A2 Preparation of diphenyl ether
07/22/1992EP0494906A1 METHOD FOR CONTINUOUS PRODUCTION OF $g(D)1-ENOL ETHERS
07/22/1992EP0360815B1 Process for the purification of diethoxymethane from a mixture with ethanol and water
07/21/1992US5132468 C-alkylation of hydroquinone or monoethers thereof
07/21/1992US5132467 Process for the conversion of normal alkenes to tertiary alkyl ethers
07/21/1992US5132466 Process for preparing 4-(6-methoxy-2'-naphthyl)butane-2-one
07/21/1992US5132465 Oxidation of primary alcohols to aldehydes using transition metal phthalocyanines as catalysts
07/21/1992US5132455 Method for synthesizing perfluorinated ether compounds via polyesters
07/21/1992US5132437 From 2-Substituted Benzyl Compound and Xylene
07/21/1992US5132328 Lipoxygenase inhibitors as antiinflammatory agents or antiallergens
07/21/1992CA1305486C Quaternary ammonium salts used as phase transfer catalyst
07/21/1992CA1305445C Process for the continuous separation of water from mixtures with organic substances
07/16/1992CA2059223A1 Separation of a mixture of water, methylethyl ketone, and ethylene glycol mono-n-butyl ether into a) water and b) methylethyl ketone containing ethylene glycol mono-n-buthyl ether
07/15/1992EP0494419A2 Process for the preparation of 5-(2,4-difluorophenyl)-salicylic acid
07/15/1992CN1062680A Calcium basic compound catalysis alkyl phenolic alkoxy
07/15/1992CA2054227A1 Preparation of diphenyl ether
07/14/1992US5130435 Elimination of alcohol from an acetal or ketal in the presence of phosphates
07/14/1992US5130101 Reactor system for conversion of alcohols to ether-rich gasoline
07/08/1992CN1062523A Process for preparation of diethers
07/07/1992CA1304757C Process for the production of polyglycerines
07/02/1992DE4040960A1 Prepn. of 2-chloro-propionaldehyde acetal derivs. - useful as intermediates for e.g. aminothiazole(s) used as chemicals, agrochemicals and pharmaceuticals
07/01/1992CN1062341A Alkoxylation process catalyzed by sodium-or potassium barium phosphate
07/01/1992CN1017238B Method of single terpene base ether catalysis synthesized by natural zeolite
06/1992
06/30/1992US5126493 With ethylene or propylene oxide; polycrystalline iron oxide catalyst
06/30/1992US5126071 Optically active compound, process for producing same and liquid crystal composition containing same
06/30/1992CA1304415C Process for the preparation of fluoroalkyl perfluorovinyl ethers
06/24/1992EP0491600A1 Process for the regiospecific monofunctionalisation of a phenolic hydroxy group of a polyphenol
06/23/1992US5124473 Polycyclic aromatic derivatives, process for preparing the same and pharmaceutical and cosmetic compositions containing the same
06/23/1992US5124005 Adding extractive agent
06/21/1992WO1992011224A1 Process for the preparation of glycol ethers
06/21/1992CA2076376A1 Process for the preparation of glycol ethers
06/17/1992EP0490571A2 Hydrogenation process
06/17/1992EP0490444A1 Alkoxylation process catalyzed by sodium- or potassium barium phosphate
06/17/1992EP0490378A1 Bromination process
06/17/1992EP0490221A2 Method for the production of unsaturated ethers
06/17/1992DE4039950A1 1-Alkenyl ether prodn. form di:alkyl acetal - by heating in presence of amine and acid, intermediates for pharmaceuticals, plant protection agents, etc.
06/17/1992CN1061954A Alkoxylation process using calcium based catalysts
06/17/1992CN1061953A Process for preparation of ethers
06/17/1992CN1017044B Process for removing impurities from aromatic stream
06/14/1992WO1992010450A1 Process for producing 1-octene
06/13/1992CA2056270A1 Bromination process
06/10/1992EP0489454A1 Use of an allylchloride for preparing an aldehyde
06/10/1992EP0489097A1 Method for preparing ether carboxylic acids from carbohydrates and their derivatives and use thereof.
06/09/1992US5120881 Adsorption onto zeolite
06/09/1992US5120868 Catalyst system and process for the selective production of isoprenylalkyletheres from isoprene
06/09/1992US5120697 Reacting calcium metal or calcium containing compound, organic activator, oxyacid metal salt; polymerization catalysts
06/09/1992US5120468 Optical active mixture exhibiting ferroelectricity
06/09/1992US5120467 Anisotropic compounds and liquid crystal mixtures
06/09/1992US5120403 Method for operating a catalytic distillation process
06/09/1992CA1303068C Pervaporation process for separating alcohols from ethers
06/09/1992CA1303065C Process for the preparation of hydroxylated arometic derivatives, using the baeyer-villiger reaction
06/06/1992CA2056806A1 Use of an allylchloride for preparing an aldehyde
06/04/1992DE4104333A1 Conversion of raw material in mixed phase reaction distn.
06/03/1992EP0488861A1 Process for the preparation of alkoxylated aromatic compounds
06/03/1992EP0488236A1 Aromatic compounds, their production processes and their compositions for the control of insect pests
06/03/1992EP0487714A1 Selective ethylation of naphthalene compounds
06/03/1992EP0307446B1 Liquid phase isomerization of iodoaromatic compounds
06/02/1992US5118873 Process for the preparation of mtbe
06/02/1992US5118871 Minimizing deactivation of ether synthesis catalyst
06/02/1992US5118870 Alkoxylation process catalyzed by rare earth and phosphorus-containing xerogels
06/02/1992US5118869 Polymerizing tetrahydrofuran to produce polytetramethylene ether glycol using a modified fluorinated resin catalyst containing sulfonic acid groups
06/02/1992US5118650 Alkylation of alkylene oxide; narrow molecular weight distribution
06/02/1992CA1302437C Production of ethers from olefins
05/1992
05/29/1992WO1992008685A1 Amphiphilic non-ionic, glycerol-derived compounds, a method for preparing same, corresponding intermediate compounds and compositions containing said compounds
05/29/1992WO1992008683A1 Etherification process
05/27/1992EP0487264A1 Process for the preparation of MTBE
05/27/1992EP0487035A2 Process for the preparation of diethers
05/27/1992EP0398998A4 Synthetic porous crystalline material, its synthesis and use
05/27/1992DE4037284A1 Tubular reactor for continuous fluidic chemical reaction under pressure - comprises pulsators acting on opposite ends of tube to increase efficiency of ammonolysis, oxy- and cyanoethylation and saponification
05/26/1992US5117010 Etherification
05/26/1992US5117002 Preparation of diphenyl ether
05/21/1992CA2055721A1 Process for the preparation of diethers
05/20/1992EP0485785A1 Process and apparatus for producing alpha, beta-unsaturated acetals
05/20/1992CA2054990A1 Process for the preparation of mtbe
05/19/1992US5114977 Ethers