Abstract: A process to form silyl ethers by contacting a carbonyl compound with an organosilicon hydride under reaction conditions in the presence of a catalyst, said catalyst being a heated transition metal carbonyl coordination compound.
Abstract: Polyalkoxysilylenolethers, for example, methyldimethoxyisopropenoxysilane, are provided and a method for making such silanes. The dialkoxysilylenolethers can be used as end-capping silanes for making noncorrosive RTV compositions.
Abstract: Organic silyl ethers are prepared by contacting an acyclic carbonate ester with an organic silyl halide in the presence of an initiator compound at a temperature from about 50.degree. C. to about 250.degree. C.
Abstract: Silylated trichloromethyl carbinol compounds are prepared by contacting aldehydes and ketones with silylated trichloroacetates at elevated temperatures in the presence of an initiator.
Abstract: Active hydrogen-containing compounds are silylated by contacting with trimethylsilyl trichloroacetate at elevated temperatures in the presence of an initiator.
Abstract: A process to form silyl ethers by contacting a carbonyl compound with an organosilicon hydride under reaction conditions in the presence of a catalyst, said catalyst being formed from a transition metal carbonyl coordination compound precursor by irradiation at an appropriate wavelength.
Abstract: Tetra-alkyl and tetra-alkoxyalkyl silicates are made by reacting an alkanol or an alkoxyalkanol with silicon in the presence of an alkali metal carboxylic acid salt.
Type:
Grant
Filed:
April 20, 1981
Date of Patent:
April 6, 1982
Assignee:
Carboline Company
Inventors:
John F. Montle, Henry J. Markowski, Paul D. Lodewyck, Daniel F. Schneider, III
Abstract: A continuous process for preparing silanes and siloxanes having SiOC groups which comprises (a) introducing in a liquid phase a chlorosilane and a hydroxyl-containing aliphatic compound in parallel flow into a first stage of a first reactor in an amount such that from 0.5 to 0.
Type:
Grant
Filed:
November 24, 1980
Date of Patent:
November 3, 1981
Assignee:
Wacker-Chemie GmbH
Inventors:
Anton Schinabeck, Norbert Zeller, Tassilo Lindner, Georg Engelsberger, Rudolf Riedle
Abstract: Process for the preparation of tetraalkylorthosilicates which comprises contacting alkanol and dimethylamine with copper-activated silicon, followed by adding alkanol to the resultant silane mixture.
Type:
Grant
Filed:
June 30, 1980
Date of Patent:
September 15, 1981
Assignee:
Union Carbide Corporation
Inventors:
William B. Herdle, Bernard Kanner, Donald L. Bailey
Abstract: Tetraalkyl silicates are produced by the reaction of silicon metal with an alkanol in the presence of an alkali metal salt of an alkoxyalkoxy alcohol or a polyalkylene glycol in either an alkoxyalkoxy alcohol or a polyalkylene glycol or mixtures thereof and recovery of the product. Tetramethyl silicate and tetraethyl silicate are the preferred products. The preferred alkoxyalkoxy alcohol is 2-(2-butoxyethoxy)ethanol. The preferred glycol is diethylene glycol. An indifferent solvent and/or a hydroxide-scavenger may be employed in the reaction mixture.
Abstract: The invention provides a novel method for the preparation of a triorganosiloxy derivative of a 2,3-unsaturated alcohol which is a useful intermediate compound for the synthetic preparation of various kinds of organic compounds. The method comprises reacting an oxirane compound having at least 3 carbon atoms in a molecule, of which the carbon atom adjacent to the oxirane ring has at least one hydrogen atom directly bonded thereto, with a triorganosilyl trifluoromethanesulfonate in the presence of an amine compound.
Abstract: A method of neutralizing a halogen silicone compound comprising adding to the halogen silicone compound an orthoformate and an alcohol so as to form an alkyl chloride and a formate which can then be distilled off.
Abstract: A process for the telomerization of dienes with a telomerizing compound containing a mobile hydrogen atom is disclosed wherein the reaction between the diene and the telomerizing agent is effected in the presence of a catalytic system comprising a water-soluble sulfonated triaryl phosphine compound, preferably a water-soluble salt of a mono-, di-, or trisulfonated triphenyl phosphine and a transition metal compound, preferably palladium or a palladium-containing compound. Water is added either before or after the reaction is completed and the reaction products can easily be separated from the aqueous catalyst solution.
Abstract: An improvement in a process for forming an orthosilicic acid ester or an oligomer thereof by contacting a tetrachlorosilane or higher homolog thereof with a primary alcohol, the improvement which comprises introducing the alcohol directly into a tetrachlorosilane liquid phase without said alcohol touching the gas phase and, after completion of the reaction, removing hydrogen chloride formed during the reaction from the reaction zone.
Abstract: Ethyl or other lower alkyl silicate is prepared by the direct reaction of alcohol and silicon thereby avoiding the generation of hydrogen chloride as a by-product. The reaction is carried out at elevated temperature in a catalytic solution of high thermal capacity.
Type:
Grant
Filed:
March 23, 1979
Date of Patent:
July 8, 1980
Assignee:
Zirconal Processes Limited
Inventors:
Harold G. Emblem, Anup K. Das, Kenneth Jones