Patents
Patents for C07C 41 - Preparation of ethers; Preparation of compounds having groups, groups or groups (17,242)
03/1997
03/04/1997US5607557 Ethyl tertio-butyl ether purification process combining a membrane method and distillation
03/04/1997CA2051484C Decarboxylation processes using mixed metal oxide catalysts
02/1997
02/27/1997CA2184051A1 Process for preparing 4-bromophenyl alkyl ethers
02/26/1997EP0759418A1 Use of a second stage reactor in the manufacture and recovery of methyl tertiary butyl ether
02/26/1997EP0759417A1 Method for the water washing and recovery of methyl tertiary butyl ether
02/25/1997CA1338939C Vinylphenol derivatives, their preparation and their use
02/19/1997CA2178708A1 Feed control in the manufacture of methyl tertiary butyl ether
02/18/1997CA2183490A1 Use of a second stage reactor in the manufacture and recovery of methyl tertiary butyl ether
02/18/1997CA2172581A1 Method for the water washing and recovery of methyl tertiary butyl ether
02/12/1997EP0757977A1 Removal of methanol from methyl tertiary butyl ether
02/12/1997EP0757668A1 Pesticidal fluoroolefins
02/12/1997CN1142482A Production of polyethylene glycol dimethyl ether
02/11/1997US5602285 Etherification of phenethyl alcohol with primary aliphatic alcohol in presence of acid catalyst
02/11/1997US5602104 Skin disorders, conjunctive tissue disorders, antitumor agents
02/09/1997CA2181980A1 Removal of methanol from methyl tertiary butyl ether
02/05/1997CN1141909A Process for preparation of pely alkylidene dialcohol mono alkyl ether
02/05/1997CN1141908A Process for joint production of ethers and hydrocarbons with high octane number
02/04/1997US5600045 Similtaneous etherification and hydrogenation of tertiary olefins and gum-forming compounds using an acidic mordenite zeolite containing an active hydrogenation metal
02/04/1997US5600024 Enhanced recovery of alcohol from an ether containing stream
02/04/1997US5600023 Reacting propylene, water and recycled isopropyl alcohol in the presence of sulfolane and a styrene/divinylbenzene copolymer having a sulfonic acid functional group attached
02/04/1997US5600022 Using an aqueous acid solution to dissolve catalyst; solvent extraction
02/04/1997US5600020 Process for the preparation of alkoxylates using ester compounds as catalyst
02/04/1997US5600015 Assymetric hydrogenation of isoprene derivatives
02/04/1997CA2182435A1 Recycle of alcohol in a combined hydroisomerization and etherification process
01/1997
01/29/1997EP0755911A1 Enhanced recovery of alcohol from an ether containing stream
01/29/1997EP0755706A1 Process and apparatus for reactive distillation with particular distribution of the liquid and vapour phases
01/29/1997CN1141285A Diethers suitable for use in prepn. of zieglernatta catalysts
01/28/1997US5597934 Process for production of polyol compounds
01/23/1997WO1997002227A1 Addition of trifluoromethanes to fluoroolefins and isomerization of monohaloperfluoro alkanes
01/22/1997EP0684939A4 Di-isopropyl ether production.
01/22/1997CN1141027A Synergistic process for the production of methanol
01/22/1997CN1033855C Reduction of carboxylic esters
01/22/1997CN1033854C Synthetic process of triethyl orthoformate
01/22/1997CN1033842C Modified alumina catalyst for producing alkoxyl alcohol
01/16/1997WO1997001594A1 Hydroxy-substituted ethynylated biphenyls
01/16/1997WO1997001536A1 4-aryl-1-phenylalkyl-1,2,3,6-tetrahydropyridines having neurotrophic and neuroprotective activity
01/15/1997EP0753500A2 Process for producing ether compound
01/14/1997US5593973 Treatment of viral hepatitis with mismatched dsRNA
01/09/1997WO1997000842A1 Synthesis of glycol ethers
01/09/1997CA2225399A1 Synthesis of glycol ethers
01/08/1997EP0751925A1 Electrophilic substitution of triphenylene-based discotic liquid crystals
01/07/1997US5591884 Dopamine agonists
01/03/1997WO1997000133A1 Process for preparing alkoxylation catalysts and alkoxylation process
01/02/1997EP0750587A1 Crystalline borophosphates, their production and use
01/02/1997EP0640064B1 Process and apparatus for preparing tertiary alkyl ethers
01/02/1997EP0583251B1 Process for purifying and end-capping polyols made using double metal cyanide catalysts
01/01/1997CN1139424A Process for separation of glycols from dimethyl terephthalate
01/01/1997CN1139103A Process for synthesis of hydrocarbon compounds which are fluorinated on carbon of alkyl chain
01/01/1997CN1033697C Process for preparing alkylaryl ether
12/1996
12/31/1996US5589597 Process of producing ether compound
12/31/1996US5589557 Fluorinated polymers and copolymers containing cyclic structures
12/25/1996CN1138849A Process for producing n-butyraldehyde and/or n-butanol
12/25/1996CN1138568A Process for producing chloro-ether
12/25/1996CN1033619C A distilling process and plant of catalytic reaction
12/18/1996EP0748307A1 Skin lightening compositions
12/18/1996EP0748306A1 Process for making monoacetals of hydroquinone
12/18/1996EP0702596B1 Catalytic materials comprising layered clay macrospheres
12/17/1996US5586051 Chemical reactor feed control
12/17/1996US5585525 Reacting monoether of hydroquinone with enol ether in presence of acid catalyst to form protected monoacetal, reacting with nonacidic hydrogen transfer source in presence of metal catalyst to cleave protective group
12/17/1996US5585517 Catalyzing the hydrohalogenation in presence of an azoic free radical catalyst and sulfites
12/12/1996WO1996039372A2 Macrophage lipid chemoattractant
12/12/1996WO1996039370A1 Purification of fluorinated dimethyl ethers
12/12/1996CA2222040A1 Macrophage lipid chemoattractant
12/12/1996CA2220432A1 Purification of fluorinated dimethyl ethers
12/11/1996EP0747339A1 Process for production of (poly)alkylene glycol monoalkyl ether
12/11/1996EP0747123A2 Solid acid-base catalyst
12/10/1996US5583266 Integrated process for the production of isopropyl alcohol and diisopropyl ethers
12/10/1996CA2102576C Process for the preparation of acetals and hemiacetal esters
12/05/1996WO1996038435A1 Dopamine agonists
12/04/1996EP0745576A1 Process for the joint production of ethers and hydrocarbons with a high octane number
12/04/1996CN1137279A Process for purifying polyols
12/03/1996US5580996 Oxygen-containing aliphatic compounds and their use as intermediates for the preparation of 4-hydroxy-2, 5-dimethyl-3(2H)-furanone
12/03/1996US5580888 Administering for therapy and prophylaxis of asthma; potent phosphodiesterase iv isoenzyme inhibitors
11/1996
11/28/1996WO1996037452A1 Method for hydroxyalkylating a carbocyclic aromatic ether
11/27/1996EP0744391A1 Process for the preparation of aromatic acetyles using palladacyclen as acatalysts
11/27/1996CN1136552A Catalytic synthesizing process for ethers
11/26/1996US5578740 Process for preparation of epoxy compounds essentially free of organic halides
11/26/1996US5578686 Phenolic allyl ethers
11/26/1996US5578278 Tubular reactor system for direct fluorination
11/21/1996WO1996036583A1 Novel ether compound and process for producing the same
11/21/1996WO1996036582A1 Alkoxylation of alcohols
11/20/1996EP0743293A1 Process for producing biaryl compound
11/20/1996EP0742806A1 Polyglycerol production
11/20/1996CN1135934A 化学反应器进料控制 Chemical reactor feed control
11/19/1996US5576465 Dehydroetherification of acetals or ketals by heating
11/19/1996US5576464 Removal of methanol from methyl tertiary butyl ether
11/14/1996DE19517049A1 Di:alkyl:ether(s) prodn., useful components in cosmetic prepns.,
11/13/1996EP0742195A1 Process and installation for the conversion of C4 and C5 olefinic fractions into ethers and propylene
11/13/1996EP0741688A1 Process for the separation of glycols from dimethyl terephthalate
11/13/1996EP0741686A1 New leukotriene b 4? derivatives, methods of preparing them and their use as drugs
11/13/1996EP0741681A1 Process for producing 3-aryl propines and novel 3-aryl propines
11/12/1996US5574193 Initiators for telomerization of polyfluoroalkyl iodides with fluoroolefins
11/12/1996US5573654 From 2h-octafluoroisobutyl alkyl ether and trialkylamine
11/06/1996EP0741125A1 Benzyl compounds and process for producing same
11/05/1996US5571870 Liquid phase fluorination
11/05/1996US5571387 Continuous single vessel distillation and adsorption process
10/1996
10/31/1996WO1996033963A1 Process for dimerizing propylene and for converting hexenes into ethers
10/31/1996WO1996028407A3 Process for the alkoxylation of fluorinated alcohols
10/30/1996EP0739332A1 PROCESS FOR PRODUCING n-BUTYRALDEHYDE AND/OR n-BUTANOL
10/30/1996EP0739239A1 Sol-gel derived porous microcomposite of perfluorinated ion-exchange polymer and metal oxide