Patents by Inventor Christian Wassmer

Christian Wassmer 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).

  • Patent number: 10626130
    Abstract: A process can prepare a colourless, methanolic solution of 3-(N-benzyl-2-aminoethyl)aminopropyltrimethoxysilane hydrochloride. The process includes, in step 1 fractionally distilling the vinylbenzyl chloride reactant component with addition of at least one stabilizer, and in step 2, metering and mixing the distillate (vinylbenzyl chloride) from step 1 into an initial charge of N-(2-aminoethyl)-3-aminopropyltrimethoxysilane and methanol in a molar ratio of the N-(2-aminoethyl)-3-aminopropyltrimethoxysilane to vinylbenzyl chloride of 1.0:0.80 to 1.0:1.15 and at a temperature in the range from 40 to 60° C. and leaving them to react further. The colourless, methanolic solution has an APHA colour number of <200 mg Pt—Co/l.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: April 21, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Burkhard Standke, Christian Waßmer, Kerstin Bibbo
  • Publication number: 20190112323
    Abstract: A process can prepare a colourless, methanolic solution of 3-(N-benzyl-2-aminoethyl)aminopropyltrimethoxysilane hydrochloride. The process includes, in step 1 fractionally distilling the vinylbenzyl chloride reactant component with addition of at least one stabilizer, and in step 2, metering and mixing the distillate (vinylbenzyl chloride) from step 1 into an initial charge of N-(2-aminoethyl)-3-aminopropyltrimethoxysilane and methanol in a molar ratio of the N-(2-aminoethyl)-3-aminopropyltrimethoxysilane to vinylbenzyl chloride of 1.0:0.80 to 1.0:1.15 and at a temperature in the range from 40 to 60° C. and leaving them to react further. The colourless, methanolic solution has an APHA colour number of <200 mg Pt—Co/I.
    Type: Application
    Filed: October 16, 2018
    Publication date: April 18, 2019
    Applicant: Evonik Degussa GmbH
    Inventors: Burkhard STANDKE, Christian WAßMER, Kerstin BIBBO
  • Patent number: 10259832
    Abstract: The present invention relates to a process for preparing aqueous hydrolysates of aminoalkyltrialkoxysilanes by (a) initially charging water, optionally heating, (b) adding hydrolysable silanes consisting of at least one aminoalkyltrialkoxysilane in an amount which provides a molar ratio of water to total amount of aminoalkyltrialkoxysilane of 10.5 to 20, and (c) distilling off the alkyl alcohol formed in the reaction, wherein the solids content in an aqueous composition thus prepared is 30% to 55% by weight, based on the composition, and the aqueous solution has a total content of free and bound alkyl alcohol of not more than 1% by weight, based on the composition.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: April 16, 2019
    Assignee: Evonik Degussa GmbH
    Inventors: Burkhard Standke, Christian Wassmer, Irene Lippert, Kerstin Bibbo
  • Patent number: 10221200
    Abstract: The invention relates to novel quaternary amino alcohol functional organosilicon compounds, aqueous compositions containing the latter, and a method for their production, in particular in the form of oligomers and polymers which can be present in the partially or fully hydrolyzed form and are in particular water-soluble. The compositions comprise only an extremely small portion of VOCs. The invention further relates to their use, preferably in the production of inkjet photographic papers.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: March 5, 2019
    Assignee: Evonik Degussa GmbH
    Inventors: Christian Wassmer, Burkhard Standke, Stefan Scharfe, Christoph Batz-Sohn, Andrea Heuschen
  • Publication number: 20180127442
    Abstract: The present invention relates to a process for preparing aqueous hydrolysates of aminoalkyltrialkoxysilanes by (a) initially charging water, optionally heating, (b) adding hydrolysable silanes consisting of at least one aminoalkyltrialkoxysilane in an amount which provides a molar ratio of water to total amount of aminoalkyltrialkoxysilane of 10.5 to 20, and (c) distilling off the alkyl alcohol formed in the reaction, wherein the solids content in an aqueous composition thus prepared is 30% to 55% by weight, based on the composition, and the aqueous solution has a total content of free and bound alkyl alcohol of not more than 1% by weight, based on the composition.
    Type: Application
    Filed: April 1, 2016
    Publication date: May 10, 2018
    Applicant: Evonik Degussa GmbH
    Inventors: Burkhard STANDKE, Christian WASSMER, Irene LIPPERT, Kerstin BIBBO
  • Patent number: 9765095
    Abstract: The invention relates to a composition and to a process for producing the composition comprising essentially water-soluble (meth)acrylamido-functional siloxanols, and to the use thereof.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: September 19, 2017
    Assignee: EVONIK DEGUSSA GmbH
    Inventors: Christian Wassmer, Burkhard Standke, Thomas Schlosser, Regina Krause
  • Publication number: 20170233416
    Abstract: The invention relates to novel quaternary amino alcohol functional organosilicon compounds, aqueous compositions containing the latter, and a method for their production, in particular in the form of oligomers and polymers which can be present in the partially or fully hydrolyzed form and are in particular water-soluble. The compositions comprise only an extremely small portion of VOCs. The invention further relates to their use, preferably in the production of inkjet photographic papers.
    Type: Application
    Filed: May 4, 2017
    Publication date: August 17, 2017
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Christian WASSMER, Burkhard Standke, Stefan Scharfe, Christoph Batz-Sohn, Andrea Heuschen
  • Patent number: 9441094
    Abstract: The invention relates to a composition and to a process for producing the composition comprising (meth)acrylamido-functional siloxanes, and to the use thereof.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: September 13, 2016
    Assignee: Evonik Degussa GmbH
    Inventors: Christian Wassmer, Burkhard Standke, Thomas Schlosser, Regina Krause
  • Patent number: 9409930
    Abstract: The invention relates to a composition and to a process for producing the composition comprising essentially water-soluble (meth)acrylamido-functional siloxanols, and to the use thereof.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: August 9, 2016
    Assignee: EVONIK DEGUSSA GmbH
    Inventors: Christian Wassmer, Burkhard Standke, Thomas Schlosser, Regina Krause
  • Publication number: 20160222038
    Abstract: The invention relates to a composition and to a process for producing the composition comprising essentially water-soluble (meth)acrylamido-functional siloxanols, and to the use thereof.
    Type: Application
    Filed: March 15, 2016
    Publication date: August 4, 2016
    Applicant: EVONIK INDUSTRIES AG
    Inventors: Christian WASSMER, Burkhard STANDKE, Thomas SCHLOSSER, Regina KRAUSE
  • Patent number: 9353136
    Abstract: The invention relates to a process for preparing (meth)acrylamido-functional silanes.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: May 31, 2016
    Assignee: EVONIK DEGUSSA GmbH
    Inventors: Christian Wassmer, Burkhard Standke, Thomas Schlosser, Regina Krause
  • Publication number: 20150152247
    Abstract: The invention relates to a composition and to a process for producing the composition comprising (meth)acrylamido-functional siloxanes, and to the use thereof.
    Type: Application
    Filed: February 25, 2013
    Publication date: June 4, 2015
    Applicant: EVONIK INDUSTRIES AG
    Inventors: Christian Wassmer, Burkhard Standke, Thomas Schlosser, Regina Krause
  • Publication number: 20150090930
    Abstract: The invention relates to a process for preparing (meth)acrylamido-functional silanes.
    Type: Application
    Filed: February 25, 2013
    Publication date: April 2, 2015
    Applicant: EVONIK INDUSTRIES AG
    Inventors: Christian Wassmer, Burkhard Standke, Thomas Schlosser, Regina Krause
  • Publication number: 20150080594
    Abstract: The invention relates to a composition and to a process for producing the composition comprising essentially water-soluble (meth)acrylamido-functional siloxanols, and to the use thereof.
    Type: Application
    Filed: February 25, 2013
    Publication date: March 19, 2015
    Applicant: EVONIK INDUSTRIES AG
    Inventors: Christian Wassmer, Burkhard Standke, Thomas Schlosser, Regina Krause
  • Patent number: 8979996
    Abstract: The invention relates to a composition and to a method for the production thereof, comprising quaternary amino-functional organosilicon compounds, in particular in the form of oligomers and polymers, which can be present ranging from partially hydrolyzed form to completely hydrolyzed form, and which are in particular soluble in water, have a low VOC content, and to the use thereof.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: March 17, 2015
    Assignee: Evonik Degussa GmbH
    Inventors: Burkhard Standke, Christian Wassmer, Tim Voegtlin, Irene Lippert, Stefan Scharfe, Heinz Lach, Christoph Batz-Sohn, Steffen Hasenzahl
  • Patent number: 8980960
    Abstract: Process for preparing a dispersion comprising silicon dioxide particles and cationizing agents, by dispersing 50 to 75 parts by weight of water, 25 to 50 parts by weight of silicon dioxide particles having a BET surface area of 30 to 500 m2/g and 100 to 300 ?g of cationizing agent per square meter of the BET surface area of the silicon dioxide particles, wherein the cationizing agent is obtainable by reacting at least one haloalkyl-functional alkoxysilane, hydrolysis products, condensation products and/or mixtures thereof with at least one aminoalcohol and water; and optionally removing the resulting hydrolysis alcohol from the reaction mixture. Also the process for preparing the dispersion, wherein the cationizing agent comprises one or more quaternary, aminoalcohol-functional, organosilicon compounds of formula III and/or condensation products thereof, wherein Ru and Rv are independently C2-4 alkyl group, m is 2-5 and n is 2-5.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: March 17, 2015
    Assignee: Evonik Degussa GmbH
    Inventors: Stefan Scharfe, Andrea Heuschen, Christoph Batz-Sohn, Burkhard Standke, Christian Wassmer, Heinz Lach
  • Publication number: 20140374656
    Abstract: The invention relates to a method for producing a solution comprising organofunctional siliconates, silicates and, optionally, the cocondensation products thereof, and to the solutions and an installation for the production thereof.
    Type: Application
    Filed: February 27, 2012
    Publication date: December 25, 2014
    Applicant: Evonik Degussa GmbH
    Inventors: Manuel Friedel, Spomenko Ljesic, Christian Wassmer, Susanne Zoelitz
  • Publication number: 20140208981
    Abstract: The invention relates to a composition and to a method for the production thereof, comprising quaternary amino-functional organosilicon compounds, in particular in the form of oligomers and polymers, which can be present ranging from partially hydrolyzed form to completely hydrolyzed form, and which are in particular soluble in water, have a low VOC content, and to the use thereof.
    Type: Application
    Filed: April 1, 2014
    Publication date: July 31, 2014
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Burkhard STANDKE, Christian Wassmer, Tim Voegtlin, Irene Lippert, Stefan Scharfe, Heinz Lach, Christoph Batz-Sohn, Steffen Hasenzahl
  • Publication number: 20140182487
    Abstract: The invention relates to a solution and to methods for producing the solution comprising propylfunctional alkaline siliconates, silicates and, optionally, the cocondensation products thereof.
    Type: Application
    Filed: February 27, 2012
    Publication date: July 3, 2014
    Applicant: Evonik Degussa GmbH
    Inventors: Manuel Friedel, Spomenko Ljesic, Christian Waßmer, Susanne Zölitz
  • Patent number: 8747541
    Abstract: Dispersion obtainable by reacting a) in 50 to 75 parts by weight of water b) 25 to 50 parts by weight of silica particles having a BET surface area of 30 to 500 m2/g and c) 100 to 300 ?g/m2 BET surface area of the silica particles from b) parts by weight of one or more aminofunctional, organosilicon compounds, the aminofunctional, organosilicon compound being a quaternary, aminofunctional, organosilicon compound which is obtainable by reacting at least one haloalkylfunctional silane as component A with a tertiary amine as component B in the presence of a defined amount of water and at least partly removing the resulting hydrolysis alcohol from the system.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: June 10, 2014
    Assignee: Evonik Degussa GmbH
    Inventors: Stefan Scharfe, Christoph Batz-Sohn, Heinz Lach, Andrea Heuschen, Burkhard Standke, Christian Wassmer