Patents by Inventor Manfred Meisenberger
Manfred Meisenberger 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: 10851208Abstract: High hydroxyl-content organopolysiloxanes of low molecular weight are prepared in a continuous process by metering in alkoxysilanes and chlorosilanes in a weight proportion of 60:40 or more to a reaction mixture containing water and non-polar solvent, and continuously removing an organic phase containing organopolysiloxanes from the reaction mixture.Type: GrantFiled: November 10, 2016Date of Patent: December 1, 2020Assignee: WACKER CHEMIE AGInventors: Georg Loessel, Manfred Meisenberger
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Patent number: 10689490Abstract: Organopolysiloxanes having an OH content of 3.0-10.0% by weight are produced in a continuous process in which silanes of the formula I R1mSiR2nXo??(I), in which R1 is a C1-C18-hydrocarbon radical and R2 is a C1-C6-alkoxy radical and X is a chlorine or bromine radical m is 1, 2 or 3, n is 0, 1, 2 or 3 and o is 0, 1, 2 or 3, with the proviso that 4?m=n+o, and that in at least 30 mol % of the silanes of the general formula I, n?0 und o?0, water, and water-insoluble non-polar solvent are metered in continuously into a reactor to form a reaction mixture and the reaction mixture is continuously discharged from the reactor.Type: GrantFiled: November 2, 2016Date of Patent: June 23, 2020Assignee: WACKER CHEMIE AGInventors: Georg Loessel, Frank Betschinger, Manfred Meisenberger
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Publication number: 20190270851Abstract: High hydroxyl-content organopolysiloxanes of low molecular weight are prepared in a continuous process by metering in alkoxysilanes and chlorosilanes in a weight proportion of 60:40 or more to a reaction mixture containing water and non-polar solvent, and continuously removing an organic phase containing organopolysiloxanes from the reaction mixture.Type: ApplicationFiled: November 10, 2016Publication date: September 5, 2019Applicant: WACKER CHEMIE AG.Inventors: Georg LOESSEL, Manfred MEISENBERGER
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Publication number: 20190040206Abstract: Organopolysiloxanes having an OH content of 3.0-10.0% by weight are produced in a continuous process in which silanes of the formula I R1mSiR2nXo ??(I), in which R1 is a C1-C18-hydrocarbon radical and R2 is a C1-C6-alkoxy radical and X is a chlorine or bromine radical m is 1, 2 or 3, n is 0, 1, 2 or 3 and o is 0, 1, 2 or 3, with the proviso that 4?m=n+o, and that in at least 30 mol % of the silanes of the general formula I, n?0 und o?0, water, and water-insoluble non-polar solvent are metered in continuously into a reactor to form a reaction mixture and the reaction mixture is continuously discharged from the reactor.Type: ApplicationFiled: November 2, 2016Publication date: February 7, 2019Applicant: Wacker Chemie AGInventors: Georg LOESSEL, Frank BETSCHINGER, Manfred MEISENBERGER
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Patent number: 9988498Abstract: Organopolysiloxanes having an OH content of from 3.0-10.0 weight percent are continuously produced by continuously feeding chlorosilanes, alkoxysilanes, water, and nonpolar solvent essentially non-miscible in water, continuously discharging a reaction mixture containing organopolysiloxanes dissolved in a solvent phase, and optionally separating organopolysiloxanes from the solvent phase, wherein the chlorosilanes and alkoxysilanes are added in respective weight fractions of 95-60% and 5-40% based on the total weight of chlorosilanes and alkoxysilanes. The process does not employ and polar solvents, and produces products with improved flash points while minimizing complexity and expense of waste water treatment.Type: GrantFiled: June 18, 2014Date of Patent: June 5, 2018Assignee: WACKER CHEMIE AGInventors: Georg Loessel, Manfred Meisenberger, Wolfgang Wewers
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Publication number: 20160145396Abstract: Organopolysiloxanes having an OH content of from 3.0-10.0 weight percent are continuously produced by continuously feeding chlorosilanes, alkoxysilanes, water, and non-polar solvent essentially non-miscible in water, continuously discharging a reaction mixture containing organopolysiloxanes dissolved in a solvent phase, and optionally separating organopolysiloxanes from the solvent phase, wherein the chlorosilanes and alkoxysilanes are added in respective weight fractions of 95-60% and 5-40% based on the total weight of chlorosilanes and alkoxysilanes. The process does not employ and polar solvents, and produces products with improved flash points while minimizing complexity and expense of waste water treatment.Type: ApplicationFiled: June 18, 2014Publication date: May 26, 2016Inventors: Georg LOESSEL, Manfred MEISENBERGER, Wolfgang WEWERS
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Patent number: 8710254Abstract: Silsesquisiloxanes are produced in high yield and purity in a minimal number of process steps by reacting quaternary ammonium silicates with disiloxanes in a precipitant liquid which causes the silsesquisiloxane product to be precipitated in high purity.Type: GrantFiled: October 6, 2010Date of Patent: April 29, 2014Assignee: Wacker Chemie AGInventors: Georg Loessel, Manfred Meisenberger
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Publication number: 20120203019Abstract: Silsesquisiloxanes are produced in high yield and purity in a minimal number of process steps by reacting quaternary ammonium silicates with disiloxanes in a precipitant liquid which causes the silsesquisiloxane product to be precipitated in high purity.Type: ApplicationFiled: October 6, 2010Publication date: August 9, 2012Applicant: WACKER CHEMIE AGInventors: Georg Loessel, Manfred Meisenberger
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Patent number: 7666969Abstract: One-component, H-siloxane-containing addition-crosslinkable silicone resins, are prepared by charging a reactor with water and a solvent mixture of at least one aromatic solvent and at least one alkyl ester, adding a chlorosilane mixture containing an Si—H functional silane and a silane bearing an unsaturated hydrosilylatable group with stirring, the temperature not being above 50° C., separating an aqueous phase comprising a one-component, H-siloxane-containing addition-crosslinkable silicone resin, and washing the phase comprising the one-component, H-siloxane-containing addition-crosslinkable silicone resin in at least two washing steps to reduce residual HCl content, a final washing carried out using a 0.01%-1.0% strength aqueous solution of a base with a pH between 7.00-8.50, at a temperature of 20-50° C.Type: GrantFiled: May 10, 2007Date of Patent: February 23, 2010Assignee: Wacker Chemie AGInventors: Georg Loessel, Manfred Meisenberger, Gerhard Staiger
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Publication number: 20070265410Abstract: One-component, H-siloxane-containing addition-crosslinkable silicone resins, are prepared by charging a reactor with water and a solvent mixture of at least one aromatic solvent and at least one alkyl ester, adding a chlorosilane mixture containing an Si—H functional silane and a silane bearing an unsaturated hydrosilylatable group with stirring, the temperature not being above 50° C., separating an aqueous phase comprising a one-component, H-siloxane-containing addition-crosslinkable silicone resin, and washing the phase comprising the one-component, H-siloxane-containing addition-crosslinkable silicone resin in at least two washing steps to reduce residual HCl content, a final washing carried out using a 0.01%-1.0% strength aqueous solution of a base with a pH between 7.00-8.50, at a temperature of 20-50° C.Type: ApplicationFiled: May 10, 2007Publication date: November 15, 2007Applicant: WACKER CHEMIE AGInventors: Georg Loessel, Manfred Meisenberger, Gerhard Staiger
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Patent number: 7026427Abstract: A process for the preparation of organopolysiloxane resins, wherein a silane R3SiOR1 ??(I) or a hydrolyzate thereof, and a silane Si(OR2)4 ??(II) or a partial hydrolyzate thereof, are reacted with acidified water and a portion of alcohol distilled off; the mixture is then reacted in the presence of base and a water-insoluble organic solvent and water, alcohol and optionally a portion of water-insoluble organic solvent are removed; the mixture is then neutralized with acid, and any water, alcohol, and a portion of organic solvent are distilled off; the mixture obtained is then treated with organopolysiloxanes and precipitated salts formed are then removed, and optionally, the mixture is separated from water-insoluble organic solvent.Type: GrantFiled: September 5, 2003Date of Patent: April 11, 2006Assignee: Wacker-Chemie GmbHInventors: Thomas Koehler, Manfred Meisenberger, Wolfgang Ackermann
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Publication number: 20040092660Abstract: A process for the preparation of organopolysiloxane resins, wherein a silaneType: ApplicationFiled: September 5, 2003Publication date: May 13, 2004Applicant: Wacker-Chemie GmbHInventors: Thomas Koehler, Manfred Meisenberger, Wolfgang Ackermann
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Patent number: 6350440Abstract: The invention relates to mixtures of linear organosiloxanes of the general formula 1 R3SiO—(SiR2O)n—SiR3 (1), where R can be identical or different and is a hydrocarbon radical having from 1 to 18 carbon atoms which is optionally substituted by fluorine, chlorine or cyano radicals and is free from ethylenically or acetylenically unsaturated bonds, and n has values from 0 to 20, where the mean number of carbon atoms of the radicals R is at most 3 and where the mixtures have evaporated, measured in accordance with DIN 53249, to an extent of from 80 to 95% by weight after 30 minutes, to an extent of from 90 to 99% by weight after 60 minutes and to an extent of from 95 to 100% by weight after 120 minutes. The mixtures of linear organosiloxanes are added to cosmetic formulations.Type: GrantFiled: August 13, 1999Date of Patent: February 26, 2002Assignee: Wacker-Chemie GmbHInventors: Thomas Koini, Thomas Köhler, Annemarie Huber, Manfred Meisenberger, Marianne D. Berthiaume
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Patent number: 6232423Abstract: Mixtures of linear organopolysiloxanes of the general formula 1 for R3SiO—(SiR2O)n—SiR3 (1) are produced by a process in which organochlorosilanes of the general formula 2 R4−ySiCly (2) where R is identical or different and is a hydrogen atom or an unsubstituted or substituted hydrocarbon radical having from 1 to 18 carbon atoms, Y is 1 or 2, and n is 0 or an integer from 1 to 50, are reacted continuously in a closed circulation system with water which may, if desired, have been acidified with hydrochloric acid, where the HCl concentration in the hydrochloric acid discharged is less than 25% by weight. Low molecular weight oligomer mixtures substantially free of both cyclic organosiloxanes and organosilicon compounds containing Si—Cl are economically produced.Type: GrantFiled: October 6, 1999Date of Patent: May 15, 2001Assignee: Wacker-Chemie GmbHInventors: Thomas Köhler, Manfred Meisenberger
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Patent number: 5302683Abstract: The present invention relates to a process for preparing coating compositions which comprises condensing a mixture containing (A) at least one silicone resin containing Si-bonded alkoxy groups and, if desired, silanol groups and/or at least one silane and/or siloxane which contains Si-bonded alkoxy groups and, if desired, silanol groups to form a silicone resin, (B) a basic condensation catalyst in an amount sufficient to render this mixture basic, (C) optionally water and (D) optionally an organic solvent.The resultant coating compositions are preferably employed in the form of a solution, emulsion or dispersion.Type: GrantFiled: April 26, 1993Date of Patent: April 12, 1994Assignee: Wacker-Chemie GmbHInventors: Richard Weidner, Erich Bildl, Volker Frey, Manfred Meisenberger, Reinhardt Mueller