Patents by Inventor Bernward Deubzer
Bernward Deubzer 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: 4935484Abstract: Silicone resin powders are obtained by spray drying aqueous colloidal suspensions of organopolysiloxanes which are prepared by adding an alkoxysilane and/or a partial hydrolysate thereof and, if appropriate, mixed with an organo(poly)siloxane which is free of alkoxy groups and contains a maximum of 8 siloxane units per molecule, to water in the presence of an emulsifier at a maximum rate of 5 moles of organosilicon compound per hour per liter of water.Type: GrantFiled: May 16, 1988Date of Patent: June 19, 1990Assignee: Wacker-Chemie GmbHInventors: Matthias Wolfgruber, Bernward Deubzer, Volker Frey
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Patent number: 4857608Abstract: Substrates which are exposed to weathering are coated with paints containing an epoxy resin and a silicon compound containing basic nitrogen which is bonded to the silicon via a carbon and which has at least one hydrogen atom bonded directly to the nitrogen atom.Type: GrantFiled: March 11, 1988Date of Patent: August 15, 1989Assignee: Wacker-Chemie GmbHInventors: Christian Herzig, Bernward Deubzer, Volker Frey, Esterbauer Josef
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Patent number: 4857582Abstract: Colloidal suspensions of organopolysiloxanes are prepared by mixing an organosilicon compound selected from the group consisting of mixtures of alkoxysilanes and/or partial hydrolysates thereof and an organo(poly)siloxane which is optionally free of alkoxy groups and contains a maximum of 8 siloxane units, which is mixed with at least one alkoxysilane and/or a partial hydrolysate thereof, with water in the presence of an emulsifier, at a maximum rate of 5 moles of organosilicon compound per hour per liter of water, in which the organosilicon compound and the water is fed continuously, but separately from one another, into a reactor, in which at least one of the two substances contains an emulsifier, while the alkanol is being continuously removed by distillation from the aqueous suspension continuously emerging from the reactor. The aqueous suspension from which the alkanol has been removed by distillation is, if desired, recycled back into the reactor.Type: GrantFiled: May 18, 1988Date of Patent: August 15, 1989Assignee: Wacker-Chemie GmbHInventors: Matthias Wolfgruber, Bernward Deubzer, Volker Frey
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Patent number: 4833187Abstract: Silicone containing paint compositions containing aqueous dispersions of(a) organopolysiloxanes; and(b) an ethylene-vinyl chloride copolymer which does not exceed the weight of the organopolysiloxanes.Type: GrantFiled: March 28, 1988Date of Patent: May 23, 1989Assignee: Wacker-Chemie GmbHInventors: Wilhelm Sittenthaler, Klaus Marquardt, Bernward Deubzer, Anton Eglseder
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Patent number: 4757106Abstract: Aqueous emulsions of (A) an organopolysiloxane comprising aliphatic radicals that are bonded to silicon via oxygen which have a molecular weight of at least 620 g/mol, and (B) an emulsifier containing a salt of a water-soluble organic or inorganic acid and a polysiloxane which contains siloxane units having monovalent SiC-bonded radicals with basic nitrogen, in which the basic nitrogen is present in an amount of at least 0.5 percent by weight based on the weight of the polysiloxane, and not more than 5 percent by weight of a water-soluble solvent or octanols, based on the weight of the emulsifier (B).These emulsions may be used to impart hydrophobic properties to mineral substances by applying the emulsions to the mineral substances after they have been molded. These emulsions may also be used to impart hydrophobic properties to inorganic binding agents or they may be used as binding agents for inorganic fibrous materials or as binding agents in aqueous paints.Type: GrantFiled: February 27, 1987Date of Patent: July 12, 1988Assignee: Wacker-Chemie GmbHInventors: Hans Mayer, Hermann Wilhelm, Bernward Deubzer
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Patent number: 4692474Abstract: Plastic foams are prepared by reacting a compound containing Si-bonded hydrogen and at least one SiC-bonded radical having a basic nitrogen atom in the same molecule with a hydroxyl-containing compound.Type: GrantFiled: June 16, 1986Date of Patent: September 8, 1987Assignee: Wacker-Chemie GmbHInventors: Hans Mayer, Rudolf Muhlhofer, Bernward Deubzer, Walter Mayerhofer
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Patent number: 4661551Abstract: Transparent aqueous organopolysiloxane compositions comprising (A) a salt of a water-soluble organic or inorganic acid and a polysiloxane, which contains in addition to the other siloxane units siloxane units containing SiC-bonded monovalent radicals having basic nitrogen atoms in an amount of at least 0.5 percent by weight, based on the weight of the polysiloxane; and (B) an organic silicon compound having basic nitrogen atoms in an amount of from 0 to 0.5 percent by weight, based on the weight of the organic silicon compound; and when constituent (B) does not contain at least one organic silicon compound having a molecular weight greater than 600 g/mol in an amount of at least 0.1 part per part by weight of contituent (A), then an organic solvent (C) is present in an amount up to about 5 percent by weight based on the weight of constituent (A), in which the organic solvent is soluble in water up to about 1 part by weight per 100 parts by weight of water at 20.degree. C. and 1020 hPa (abs.Type: GrantFiled: October 16, 1985Date of Patent: April 28, 1987Assignee: Wacker-Chemie GmbHInventors: Hans Mayer, Bernward Deubzer, Petra Iretzberger, Rudolf Muhlhofer, Hermann Wilhelm
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Patent number: 4552910Abstract: An aqueous organosilicon composition is prepared by mixing water with an organopolysiloxane having at least one ##STR1## group and having aliphatic radicals which are bonded to silicon via oxygen, a polyvinyl alcohol and/or a water-soluble cellulose ether containing hydroxyl groups in the presence of sufficient acid to provide a composition having an acid pH. The resultant composition may be neutralized and used as additives in aqueous paint compositions.Type: GrantFiled: June 4, 1984Date of Patent: November 12, 1985Assignee: Wacker-Chemie GmbHInventors: Bernward Deubzer, Hermann Wilhelm
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Patent number: 4413104Abstract: A process for preparing organopolysiloxanes having SiC-bonded organofunctional groups, which comprises reacting an organopolysiloxane containing SiC-bonded hydroxyl and/or alkoxy groups and having an average of about 0.85 to 1.8 SiC-bonded monovalent hydrocarbon radicals or halogenated monovalent hydrocarbon radicals for each Si atom, with an organosilicon compound containing alkoxy groups and/or siloxane oxygen groups and at least one SiC-bonded organofunctional radical per molecule in the presence of an organic solvent and a basic catalyst.The resultant organopolysiloxanes having SiC-bonded organofunctional groups may, for example, be used for preparing modified polymers by copolymerizing the organopolysiloxanes with a monomer containing an aliphatic double bond, such as styrene or hydroxyethyl methacrylate, or by reacting the organopolysiloxanes with an additional polymer such as an epoxy resin.Type: GrantFiled: December 18, 1981Date of Patent: November 1, 1983Assignee: Wacker-Chemie GmbHInventors: Bernward Deubzer, Norbert Egerter, Volker Frey
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Patent number: 4405469Abstract: This invention relates to organosiloxanes which have SiC-bonded ester groups and contain at least one unit of the general formula: ##EQU1## is which R represents the same or different monovalent hydrocarbon radicals having from 1 to 12 carbons atoms, which are free of aliphatic unsaturation and which may contain one ether oxygen atom; R' represents hydrogen or a methyl group (CH.sub.3) and a is O, 1 or 2. These organosiloxanes can be prepared by hydrolyzing or co-hydrolyzing silanes of the general formula:ROOCCH.sub.2 CH(COOR)CH.sub.2 CHR'CH.sub.2 Si(CH.sub.3).sub.a X.sub.3-a'where R, R' and a are the same as above and X represents the same or different hydrolyzable atoms or groups. Also, they may be prepared by the addition of a diester of allyl succinic acid and/or methallyl succinic acid to an organosiloxane containing Si-bonded hydrogen. These new organosiloxanes may be used as lubricants for inorganic and organic fibers, metal surfaces and as hydraulic fluids.Type: GrantFiled: July 27, 1981Date of Patent: September 20, 1983Assignee: Consortium fur Elektrochemische Ind. GmbHInventors: Walter Hafner, Erich Markl, Ludwig Eibel, Gerhard Kreis, Dietrich Samrowski, Manfred Wick, Bernward Deubzer, Wilhelm Friedrich
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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: 4322473Abstract: This invention relates to organosiloxanes which have SiC-bonded ester groups and contain at least one unit of the general formula: ##EQU1## in which R represents the same or different monovalent hydrocarbon radicals having from 1 to 12 carbon atoms, which are free of aliphatic unsaturation and which may contain one ether oxygen atom; R' represents hydrogen or a methyl group (CH.sub.3) and a is 0, 1 or 2. These organosiloxanes can be prepared by hydrolyzing or co-hydrolyzing silanes of the general formula:ROOCCH.sub.2 CH(COOR)CH.sub.2 CHR'CH.sub.2 Si(CH.sub.3).sub.a X.sub.3-a,where R, R' and a are the same as above and X represents the same or different hydrolyzable atoms or groups. Also, they may be prepared by the addition of a diester of allyl succinic acid and/or methallyl succinic acid to an organosiloxane containing Si-bonded hydrogen. These new organosiloxanes may be used as lubricants for inorganic and organic fibers, metal surfaces and as hydraulic fluids.Type: GrantFiled: August 20, 1979Date of Patent: March 30, 1982Assignee: Consortium fur Elektrochemische Industrie GmbHInventors: Walter Hafner, Erich Markl, Ludwig Eibel, Gerhard Kreis, Dietrich Samrowski, Manfred Wick, Bernward Deubzer, Wilhelm Friedrich
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Patent number: 4322517Abstract: Hydrophilic, crosslinked organopolysiloxanes are obtained from the polymerization of hydroxyalkylmethacrylate and/or hydroxalkylacrylate in the presence of an organopolysiloxane containing at least 40 mol percent of monoorganosiloxane units.Type: GrantFiled: January 17, 1980Date of Patent: March 30, 1982Assignee: Wacker-Chemie GmbHInventors: Bernward Deubzer, Jurgen Burkhardt, Erich Brunner, Konrad Sallersbeck
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Patent number: 4304820Abstract: Impregnated wood containing a polymer which is produced in the wood from the polymerization of a monomer and/or prepolymer having aliphatic multiple bonds and crosslinked organopolysiloxanes.The polymer impregnated wood is prepared by impregnating the wood with a mixture containing a monomer and/or prepolymer containing aliphatic multiple bonds which is capable of free radical polymerization and a crosslinkable organopolysiloxane and thereafter the monomer and/or prepolymer is polymerized and the organopolysiloxane is crosslinked in the wood.Type: GrantFiled: January 28, 1980Date of Patent: December 8, 1981Assignee: Wacker-Chemie GmbHInventors: Bernward Deubzer, Erich Brunner
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Patent number: 4301215Abstract: A process for preparing plastic wood which comprises impregnating wood with a mixture containing (1) an organopolysiloxane having groups which are capable of condensation and/or containing SiC-bonded alkenyl group having an average molecular weight of at least 500 when the organopolysiloxane contains from 0.5 to 1.89 SiC-bonded organic radicals for each silicon atom and when the organopolysiloxane (1) contains from 1.90 to 2 SiC-bonded organic radicals for each silicon atom, then the average molecular weight is at least 20,000 and (2) an organic silicon compound having at least three groups which are capable of condensation and/or atoms capable of condensation and a maximum of 10 silicon atoms per molecule; and other substances if desired; and thereafter crosslinking the organopolysiloxane (1) having groups capable of condensation and/or containing SiC-bonded alkenyl groups, which is present in the wood.Type: GrantFiled: January 28, 1980Date of Patent: November 17, 1981Assignee: Wacker-Chemie GmbHInventors: Bernward Deubzer, Erich Brunner, Herman Wilhelm, Konrad Sallersbeck
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Patent number: 4260726Abstract: Organopolysiloxane compositions which are stable at room temperature, but are curable when subjected to elevated temperatures comprising (1) an organosilicon compound containing Si-bonded hydrogen, (2) an organosilicon compound containing aliphatic multiple bonds, (3) a catalyst capable of promoting the addition of Si-bonded hydrogen to the aliphatic multiple bonds and (4) an organic compound as an additive containing at least one group of the formula ##STR1## in which the additive inhibits curing at room temperature.Type: GrantFiled: May 18, 1979Date of Patent: April 7, 1981Assignee: Wacker-Chemie GmbHInventors: Bernward Deubzer, Erich Brunner
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Patent number: 4207246Abstract: This invention relates to organosiloxanes which have SiC-bonded ester groups and contain at least one unit of the general formula:ROOCCH.sub.2 CH(COOR)CH.sub.2 CHR'CH.sub.2 Si(CH.sub.3).sub.a O.sub.3-a/2in which R represents the same or different monovalent hydrocarbon radicals having from 1 to 12 carbon atoms, which are free of aliphatic unsaturation and which may contain one ether oxygen atom; R' represents hydrogen or a methyl group (CH.sub.3) and a is 0, 1 or 2. These organosiloxanes can be prepared by hydrolyzing or co-hydrolyzing silanes of the general formula:ROOCCH.sub.2 CH(COOR)CH.sub.2 CHR'CH.sub.2 Si(CH.sub.3).sub.a X.sub.3-a,where R, R' and a are the same as above and X represents the same or different hydrolyzable atoms or groups. Also, they may be prepared by the addition of a diester of allyl succinic acid and/or methallyl succinic acid to an organosiloxane containing Si-bonded hydrogen.Type: GrantFiled: February 26, 1979Date of Patent: June 10, 1980Assignee: Consortium f/ur Elektrochemische Industrie GmbHInventors: Walter Hafner, Erich Markl, Ludwig Eibel, Gerhard Kreis, Dietrich Samrowski, Manfred Wick, Bernward Deubzer, Wilhelm Friedrich
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Patent number: 4176128Abstract: The present invention relates to an improved process for increasing the molecular weight of silicon compounds and more particularly to an improved process for increasing the molecular weight of silicon compounds containing Si-bonded alkoxy groups.Type: GrantFiled: December 26, 1978Date of Patent: November 27, 1979Assignee: Wacker-Chemie GmbHInventors: Bernward Deubzer, Norbert Egerter
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Patent number: 4170610Abstract: A process for preparing cross-linked, modified organopolysiloxanes which comprises polymerizing at least one monomer having at least one aliphatic multiple bond in the presence of a free radical initiator and at least one cross-linked organopolysiloxane containing at least 40 mol percent of monoorganosiloxane units. When the organopolysiloxane is not crosslinked, then the polymerization of the monomer having at least one aliphatic multiple bond is conducted in the presence of an organopolysiloxane having at least 40 mol percent mono-organosiloxane units, and a free radical initiator and a catalyst which promotes cross-linking of the organopolysiloxane.Type: GrantFiled: April 13, 1978Date of Patent: October 9, 1979Assignee: Wacker-Chemie GmbHInventors: Bernward Deubzer, Erich Brunner