Patents
Sitemap › C07 - Organic chemistry › C07C - Acyclic or carbocyclic compounds › C07C 41 - Preparation of ethers; Preparation of compounds having groups, groups or groups
Patents for C07C 41 - Preparation of ethers; Preparation of compounds having groups, groups or groups (17,242)
10/1991
10/31/1991WO1991016286A1 PROCESS FOR PRODUCING α-FLUOROSTYROLS
10/31/1991DE4013305A1 Verfahren zur herstellung von (alpha)-fluorstyrol Process for the preparation of (alpha) -fluorstyrol
10/30/1991EP0454337A1 Catalyst pretreatment for olefin hydration
10/30/1991EP0453967A1 Process for the preparation of alkoxylates with a narrow distribution of homologues
10/30/1991EP0453818A1 Process for the reductive dehalogenation of halogenated hydrocarbons and halogenated ethers
10/29/1991US5061718 Benzothiazolylmethoxy compounds, pharmaceutical compositions comprising the same and their use as anti-inflammatory or anti-allergenic agents
10/29/1991US5061669 Catalyst comprising anhydrous nickel compound, bidentate phosphorus-containing ligand, reducing metal
10/27/1991CA2040695A1 Catalyst pretreatment for olefin hydration
10/23/1991EP0452411A1 Acid catalyzed process
10/22/1991US5059725 One step synthesis of methyl t-butyl ether from t-butanol plus methanol using Group IV oxides treated with sulfates or sulfuric acid
10/22/1991US5059723 Efficiency; purity
10/22/1991US5059720 Hydroxy containing fluorovinyl compounds and polymers thereof
10/22/1991US5059719 Alkoxylation process using catalyst of the lanthanum series
10/22/1991CA2040834A1 Process for the preparation of alkoxylates having a narrow homolog distribution
10/22/1991CA1291148C Alkoxylation process using calcium based catalysts
10/17/1991WO1991016292A1 Process for preparation of resorcinol bis(dihydroxyethyl)ether
10/17/1991WO1991015449A1 Removal of nitrogenous components of a hydrocarbon feedstream
10/17/1991WO1991015446A1 Process for recovering natural gas in the form of a normally liquid carbon containing compound
10/17/1991DE4012007A1 Reductive de-hydrohalogenation of hydrocarbon(s) or ether(s)
10/16/1991EP0451989A1 Etherification of gasoline
10/16/1991EP0451851A1 Process for purifying perfluoro(propylvinylether)
10/16/1991EP0451394A1 Mtbe preparation from isobutylene/tba and methanol in presence of an acid resin catalyst
10/16/1991EP0306521B1 Ethine derivatives as compounds of liquid crystal phases
10/15/1991US5057629 Process for reducing isopropyl alcohol in diisopropyl ether
10/15/1991US5057628 Forming alkylene oxide adducts from vicinal alkylene oxides and active hydrogen containing compounds
10/15/1991US5057627 Alkoxylation process catalyzed by phosphate salts of the rare earth elements
10/15/1991CA1290768C2 Chloromethyl heterocyclics
10/15/1991CA1290760C Reduction of carboxylic esters
10/09/1991EP0450707A1 Catalyst system and process for the selective production of isoprenyl-alkylethers from isoprene
10/09/1991CN1055174A Processing of anise camphor with high freezing point
10/09/1991CN1055173A Synthetic method of 1,7,7-trimethyl dicyclic (2,2,1) heptyl hydroxyalkyl ether and 1,7,7-trimethyl dicyclic (2,2,1) heptyl cyclic alkyl ether
10/08/1991US5055623 Preparation of phenols by direct N2 O hydroxylation of aromatic substrates
10/08/1991US5055613 Metabolites of pentanedioic acid derivatives
10/08/1991US5055235 Bromination process
10/05/1991CA2039069A1 Etherification of gasoline
10/03/1991WO1991015441A1 Use of hydrophobised hydrotalcites as catalysts for ethoxylation or propoxylation
10/03/1991CA2079806A1 Use of hydrophobised hydrotalcites as catalysts for ethoxylation or propoxylation
10/02/1991EP0449602A1 Method for producing 4-(2'-methoxyethyl) phenol
10/02/1991EP0449140A1 Process for preparing alkyl tert-alkyl ethers
10/02/1991EP0448998A1 Production of ethyl tertiary alkyl ethers
10/02/1991EP0309533B1 Butyl hydroxyanisoles for the treatment of retroviral diseases
10/01/1991US5053566 Catalysis reaction with bromine or chlorine halogenating agent, in the presence of methylene chloride and metal cation containing Type-L zeolite
10/01/1991US5053556 Process for producing alkenyl ethers
10/01/1991US5053536 Perhalogenated chlorofluoroether compounds or polyethers; lubricants
10/01/1991CA2038983A1 Process for preparing alkyl tert-alkyl ethers
10/01/1991CA1289730C Phase transfer catalysis
09/1991
09/29/1991CA2036498A1 Method for producing 4-(2'-methoxyethyl) phenol
09/24/1991US5051535 Process for the preparation of extensively fluorinated aliphatic hydrocarbons having 1 or 2 bromine or chlorine atoms in the molecule
09/24/1991US5051158 Process for preparing controlled molecular weight perfluoropolyethers having perfluoroalkyl or perfluorochloroalkyl end groups
09/24/1991US5051153 Separation of methylene chloride from methylal by extractive distillation
09/19/1991WO1991013849A1 Fatty alcohol alkoxylate
09/18/1991EP0446720A2 Novel brominated phenoxy compounds and processes for their preparation
09/18/1991EP0446301A1 Preparation of biaryl compounds.
09/11/1991CN1013857B Process for preparation of diphenyl oxide compounds with insecticidall activity
09/10/1991US5047575 Norbornene carboxylic acids and esters
09/10/1991US5047070 Etherificaiton, upgrading; catalytic conversion
09/10/1991CA1288777C N-fluoropyridinium salt and process for preparing same
09/10/1991CA1288724C Process for exhaustively decontaminating perfluoropolyethereal oils
09/05/1991WO1991013051A1 Use of strontium and/or barium acetyl acetonates as catalysts for the ethoxylation of propoxylation of compounds with active h atoms
09/04/1991EP0444554A2 Process for the preparation of perfluorinated polyethers
09/03/1991US5045548 Quinolyl methoxy compounds and their use as antiasthmatic agents
09/03/1991CA1288356C Non agressive cosmetic compositions containing a foaming surfactant and a non-ionic surfactant having two fatty chains
08/1991
08/28/1991EP0417240A4 Process for reducing propenyl ether concentration in hydroxy-functional polyether compounds
08/27/1991US5043482 New derivatives of 5,6,7,8-tetrahydro-1-naphthalenol, a process for their preparation and cosmetic and pharmaceutical compositions containing them
08/27/1991US5043094 Optically active bisaryl compound
08/22/1991WO1991012220A1 Process for producing nonionic surface-active compounds
08/22/1991DE4005338A1 Verwendung von strontium- und/oder bariumacetylacetonaten als katalysatoren fuer die ethoxylierung bzw. propoxylierung von verbindungen mit aktiven h-atomen H-atoms using strontium and / or bariumacetylacetonaten as catalysts for the ethoxylation or propoxylation of compounds containing active
08/21/1991EP0442400A1 Process for preparing substantially fluorinated aliphatic hydrocarbons containing 1 or 2 bromo- or chloroatoms in the molecule
08/21/1991EP0442131A1 4,4'-Di-(omega-hydroxyalkoxy)biphenyl, method for its manufacture and its application in the manufacture of polyurethanes
08/21/1991EP0441807A1 Liquid phase fluorination.
08/20/1991US5041690 Conversion of alcohols to ether-rich gasoline
08/20/1991US5041689 Method of recovering L-quebrachitol from rubber latex serums
08/20/1991US5041688 Process for the preparation of polyglycerols
08/20/1991US5041687 Bromination process
08/20/1991US5041639 Polysubstituted derivatives of naphtalene, their process of preparation and their application in the cosmetic and pharmaceutical fields
08/20/1991US5041609 Herbicidal (7-(hetero) aryloxynaphthalen-2-yl-oxy)-alkane-carboxylic
08/20/1991US5041604 Process for producing di(aryloxy)alkane
08/20/1991US5041402 Containing oxides of silicon and/or germanium with aluminum, iron, gallium, boron titanium, vanadium, zirconium, molybdenum, arsenic, chromium and/or manganese
08/14/1991EP0440737A1 Preparation of biaryl compounds
08/14/1991DE4004379A1 Alkoxylation catalyst of alkaline earth metal acyl-cyanamide - to give narrow range prods.
08/13/1991US5039710 Viricides, antitumor agents
08/13/1991CA1287637C Fluoropolyethers containing end groups endowed with anchoring capacity
08/08/1991WO1991005750A3 Process for producing fluorinated organic compounds
08/08/1991DE4003658A1 Verfahren zur herstellung von nichtionischen oberflaechenaktiven verbindungen A process for the preparation of nonionic compounds oberflaechenaktiven
08/07/1991EP0210203B1 Propanol derivatives
08/07/1991CN1013442B Bicyclic compound processes for prepn. thereof and pharmaceutical composition comprising same
08/06/1991US5037998 Using palladium phosphine complex catalyst
08/06/1991US5037511 Catalytic dehydration of dimethyl ether; purifying distillate by-products
08/01/1991WO1991011420A1 Hydroxy containing fluorovinyl compounds and polymers thereof
08/01/1991CA2073973A1 Hydroxy containing fluorovinyl compounds and polymers thereof
07/1991
07/31/1991CN1013367B Composition technology of 2-isopropoxy phenol
07/25/1991WO1991010633A1 Process for producing dipentaerythritol
07/24/1991EP0438329A1 Process for the C-alkylation of hydroquinone and its monoethers
07/24/1991EP0437844A1 Method for the production of perfluorinated ethers
07/24/1991EP0437689A1 A method for fluorodecarboxylation
07/24/1991CN1053238A Morpholinyl derivatives of doxorubicin and process for their prepn.
07/23/1991US5034134 Purification of ethylene glycol-water streams by passing through a membrane
07/23/1991US5034052 Fungicides containing a triazole or imidazole alcohols, also used as plant growth regulators
07/20/1991CA2034561A1 Process for the c-alkylation of hydroquinone and its monoesters
07/17/1991EP0436669A1 Perfluoroacetal and perfluoroketal compounds and use thereof in thermal shock testing
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