Patents by Inventor Volker Frey
Volker Frey has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 4405804Abstract: A method for preparing 2-chloroethylsilanes which comprises reacting a vinylchlorosilane with hydrogen chloride in the presence of a catalyst consisting of at least one organoaluminum compound, or the product obtained from the in situ reaction of such an aluminum compound with at least one of the reactants. The catalyst may first be deactivated, if desired, by the addition of a liquid organopolysiloxane to the reaction mixture, prior to the distillation of the 2-chloroethylsilane.Type: GrantFiled: September 2, 1982Date of Patent: September 20, 1983Assignee: Wacker-Chemie GmbHInventors: Peter John, Reinhold Artes, Volker Frey, Matthias Scherer
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Patent number: 4400528Abstract: A process for methylating silicon compounds containing halogen and at least 2 silicon atoms and optionally carbon and hydrogen atoms as the only atoms in the molecule, which comprises reacting a silicon compound containing halogen and at least two silicon atoms per molecule, such as hexachlorodisilane or 1,1,2,2-tetrachloro-1,2-dimethyldisilane or mixtures of such silanes with tetramethylsilane in the presence of at least one organoaluminum compound having the general formulaR.sub.a AlY.sub.3-a'where R represents the same or different alkyl radicals having from 1 to 4 carbon atoms, Y represents halogen, hydrogen or hydrocarbon radicals having from 1 to 10 carbon atoms which are bonded to the aluminum atom via oxygen and which are free of aliphatic multiple bonds, and a is 1, 2 or 3, or an in situ formed compound obtained from the reaction of such aluminum compound, with at least one other reactant present in the reaction mixture, at least one silane of the general formulaR.sub.b.sup.1 H.sub.c SiCl.sub.Type: GrantFiled: April 28, 1982Date of Patent: August 23, 1983Assignee: Wacker-Chemie GmbHInventors: Reinhold Artes, Volker Frey, Werner Graf, Norbert Zeller
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Patent number: 4394335Abstract: This invention relates to a process for preparing structural components which comprises preparing a slurry containing a hydraulic binding agent, water, additives and an organo(poly)siloxane of the general formula ##EQU1## where at least 10 percent of the number of R radicals are the same or different alkyl radicals having at least 4 carbon atoms per radical and the other radicals when present are alkyl radicals having from 1 to 3 carbon atoms per radical and/or phenyl radicals, R' represents the same or different alkyl radicals having from 1 to 4 carbon atoms per radical, x is 0, 1, 2 or 3, with an average of from 0.9 to 1.8, y is 0, 1, 2 or 3, with an average of 0.01 to 2.0 and z is 0, 1, 2 or 3, with an average of from 0.00 to 0.5, with the proviso that the sum of x+y+z may not exceed 3.5, molding the slurry and thereafter exposing the molded slurry to aqueous steam.Type: GrantFiled: November 12, 1981Date of Patent: July 19, 1983Assignee: Wacker-Chemie GmbHInventors: Michael Roth, Volker Frey
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Patent number: 4368294Abstract: Organopolysiloxane modified organic polymers are prepared by reacting organic polymers containing C-bonded hydroxyl groups with organopolysiloxanes containing Si-bonded hydroxyl groups and/or alkyl groups which are bonded to silicon via oxygen in the presence of water in excess of any formed during the reaction.Type: GrantFiled: February 27, 1981Date of Patent: January 11, 1983Assignee: Wacker-Chemie GmbHInventors: Bernward Deubzer, Josef Esterbauer, Christian Solbrig, Volker Frey
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Patent number: 4356293Abstract: A process for preparing organosiloxane block copolymers which comprises reacting (a) an organopolysiloxane containing Si-bonded hydroxyl groups and having an average molecular weight of at least 800 g/mole, in which at least 80 mole percent of the units are siloxane units, and one valence of each silicon atom is satisfied by an SiC-bonded organic radical, while the remaining silicon valences are satisfied by siloxane oxygen atoms or hydroxyl groups, with (b) a diorganopolysiloxane having one Si-bonded hydroxyl group in each terminal unit and an average of at least 10 silicon atoms per molecule in the presence of (c) an organic solvent and (d) an alkali metal carbonate and/or an alkali metal carboxylate to form an organosiloxane block copolymer.Type: GrantFiled: November 28, 1980Date of Patent: October 26, 1982Assignee: Wacker-Chemie GmbHInventors: Bernward Deubzer, Norbert Egerter, Volker Frey, Kurt Leitner
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Patent number: 4276426Abstract: This invention relates to the preparation of organosilicon compounds by the addition of a silicon compound containing Si-bonded hydrogen to a compound having an aliphatic multiple bond in the presence of a catalyst which promotes the addition of Si-bonded hydrogen to compounds containing an aliphatic multiple bond. In this process the reactants and the catalyst are continuously introduced into a pipe-shaped reactor while the contents of the reactor, which are maintained in a liquid phase by the application of pressure are circulated in the reactor at a rate of at least 1,000 cm per minute and while the reaction mixture is continuously being removed from the reactor.Type: GrantFiled: November 28, 1979Date of Patent: June 30, 1981Assignee: Wacker-Chemie GmbHInventors: Tassilo Lindner, Norbert Zeller, Volker Frey, Rudolf Riedle, Peter John, Georg Engelsberger
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Patent number: 4276423Abstract: A process for preparing silicon-containing acetamide derivatives which comprises reacting acetamide or substituted derivatives thereof with N-trimethylsilyl imidazole while continuously removing the silicon-containing acetamide derivatives as they are formed by distillation.Type: GrantFiled: June 10, 1980Date of Patent: June 30, 1981Assignee: Wacker-Chemie GmbHInventors: Horst Muller, Volker Frey
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Patent number: 4209454Abstract: This invention relates to an improved process for preparing polysiloxanes having hydrocarbon radicals bonded to silicon atoms via oxygen, by reacting a halosilane with an alcohol and water in the presence of the desired polysiloxane, the improvement which comprises continuously introducing into a reactor equipped with a column and possibly a reflux condenser and the desired polysiloxane, an alcohol, water and, if necessary, an acid catalyst which promotes the condensation of Si-bonded condensable groups, in an amount such that the reactor contains at least 5 percent by weight of alcohol and 0.001 to 5 percent by weight of catalyst, based on the weight of the alcohol, catalyst and polysiloxane present in the reactor in which the contents of the reactor are heated to the reflux temperature and the halosilane is introduced into the column at least one meter above the bottom of the column while continuously removing the polysiloxane from the reactor at the same rate as it is formed.Type: GrantFiled: December 28, 1978Date of Patent: June 24, 1980Assignee: Wacker-Chemie GmbHInventors: Werner Graf, Volker Frey, Peter John, Norbert Zeller
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Patent number: 4176130Abstract: This invention relates to an improved process for preparing acyloxysilanes and acyloxysiloxanes which comprises conducting an aliphatic carboxylic acid in vapor form upwards from the bottom of a column countercurrent to the flow of a chlorosilane in which the carboxylic acid is introduced into the column at such a rate that the carboxylic acid does not exceed about 1.3 mol per gram atom of Si-bonded chlorine in the column while removing the acyloxysilane from the bottom of the column.The acyloxysiloxanes are prepared by conducting an aliphatic carboxylic acid upwards from the bottom of a column in vapor form countercurrent to the flow of a chlorosilane while introducing up to about 10 percent by weight of water based on the weight of the carboxylic acid into the column and removing the acyloxysiloxane from the bottom of the column.Type: GrantFiled: December 28, 1978Date of Patent: November 27, 1979Assignee: Wacker-Chemie GmbHInventors: Peter John, Wolfgang Feichtner, Werner Graf, Volker Frey
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Patent number: 4158010Abstract: An improved process for converting an organosilane which comprises reacting at least one silane (A) having the formulaR.sub.a SiCl.sub.4-awith at least one silane (B) which differs from silane (A) and has the formulaR.sub.b SiCl.sub.4-bin the presence of an organoaluminum compound having the formulaR.sub.c.sup.1 AlY.sub.3-cand at least one silane (C) having the formulaR.sub.b H.sub.c SiCl.sub.4-b-cand from 0.1 to 5 percent by weight based on the weight of silanes (A), (B) and (C) of a hydrogen halide, in which R is a hydrocarbon radical having from 1 to 10 carbon atoms and is free of aliphatic unsaturation, R.sup.1 is an alkyl radical having from 1 to 4 carbon atoms, Y is selected from the group consisting of halogen, hydrogen or hydrocarbon radicals having from 1 to 10 carbon atoms which are bonded to the aluminum via oxygen and are free of aliphatic unsaturation, a is 2, 3 or 4, b is 0, 1, 2 or 3 and c is 1, 2 or 3 and the sum of b+c cannot exceed 4.Type: GrantFiled: May 3, 1978Date of Patent: June 12, 1979Assignee: Wacker-Chemie GmbHInventors: Werner Graf, Peter John, Volker Frey
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Patent number: 4148818Abstract: Disiloxanes of the general formula (CH.sub.2 .dbd.CHR.sub.2 Si).sub.2 O, where R represents the same or different, monovalent hydrocarbon radicals, are obtained by reacting a compound of the formula (CH.sub.2 .dbd.CHRClSi).sub.2 O with a Grignard compound of the formula RMgX, where R is the same as above and X represents chlorine, bromine or iodine.Type: GrantFiled: July 24, 1978Date of Patent: April 10, 1979Assignee: Die Wacker-Chemie GmbHInventors: Volker Frey, Horst Muller, Rudolf Riedle
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Patent number: 4126630Abstract: A process for preparing oxime containing silicon compounds which comprises reacting an oxime with a silicon compound having at least three nitrogen atoms linked to the same silicon atom through Si--N bonding per molecule.Type: GrantFiled: March 16, 1978Date of Patent: November 21, 1978Assignee: Wacker-Chemie GmbHInventors: Horst Muller, Edgar Schmidt, Volker Frey, Rudolf Riedle
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Patent number: 4113760Abstract: An improved process for converting organopolysiloxane polymers which comprises reacting halosilanes which organopolysiloxanes in the presence of activated charcoal and if desired, an inorganic acid.Type: GrantFiled: June 22, 1977Date of Patent: September 12, 1978Assignee: Wacker-Chemie GmbHInventors: Volker Frey, Rudolf Riedle, Peter John, Gerhard Kalchgruber, Helmut Spork, Robert Leser
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Patent number: 4053495Abstract: An improved process for preparing methylchlorosilanes which comprises reacting tetramethylsilane and hydrogen chloride in the gaseous state with a solid Friedel-Crafts catalyst.Type: GrantFiled: September 16, 1976Date of Patent: October 11, 1977Assignee: Consortium fur Elektrochemische Industrie GmbHInventors: Wolfgang Deinhammer, Volker Frey, Manfred Wick, Rudolf Riedle