Patents by Inventor Irene Lippert

Irene Lippert 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: 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
  • 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: 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
  • 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
  • Patent number: 8728225
    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: March 19, 2010
    Date of Patent: May 20, 2014
    Assignee: Evonik Degussa GmbH
    Inventors: Burkhard Standke, Christian Wassmer, Tim Voegtlin, Irene Lippert, Stefan Scharfe, Heinz Lach, Christoph Batz-Sohn, Steffen Hasenzahl
  • Patent number: 8394972
    Abstract: The present invention relates to a process for performing a controlled hydrolysis and condensation of an epoxy-functional silane of the general formula I R1-SiR?m(OR)3-m (I) in which R1 is a (III) or (IV) group and R, R? and R? groups are the same or different and are each hydrogen (H) or a linear, branched or cyclic, optionally substituted alkyl group having from 1 to 6 carbon atoms, A and A? groups are the same or different and are each a bivalent alkyl group having from 1 to 10 carbon atoms, R2 groups are the same or different and R2 is a linear, branched or cyclic, optionally substituted alkyl group having from 1 to 20 carbon atoms, and m is 0 or 1, and optionally of at least one further organofunctional silane of the general formula II R2-SiR?n(OR)3-n (II) in which R2 is an organofunctional group as already defined above, R? is methyl, R groups are each independently hydrogen or a linear, branched or cyclic alkyl group having from 1 to 6 carbon atoms and n is 0 or 1, where from 0.
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: March 12, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Christian Wassmer, Burkhard Standke, Irene Lippert, Peter Jenkner
  • Publication number: 20120037040
    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: March 19, 2010
    Publication date: February 16, 2012
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Burkhard Standke, Christian Wassmer, Tim Voegtlin, Irene Lippert, Stefan Scharfe, Heinz Lach, Christoph Batz-Sohn, Steffen Hasenzahl
  • Publication number: 20100191001
    Abstract: The present invention relates to a process for performing a controlled hydrolysis and condensation of an epoxy-functional silane of the general formula I R1-SiR?m(OR)3-m (I) in which R1 is a (III) or (IV) group and R, R? and R? groups are the same or different and are each hydrogen (H) or a linear, branched or cyclic, optionally substituted alkyl group having from 1 to 6 carbon atoms, A and A? groups are the same or different and are each a bivalent alkyl group having from 1 to 10 carbon atoms, R2 groups are the same or different and R2 is a linear, branched or cyclic, optionally substituted alkyl group having from 1 to 20 carbon atoms, and m is 0 or 1, and optionally of at least one further organofunctional silane of the general formula II R2-SiR?n(OR)3-n (II) in which R2 is an organofunctional group as already defined above, R? is methyl, R groups are each independently hydrogen or a linear, branched or cyclic alkyl group having from 1 to 6 carbon atoms and n is 0 or 1, where from 0.
    Type: Application
    Filed: June 17, 2008
    Publication date: July 29, 2010
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Christian Wassmer, Burkhard Standke, Irene Lippert, Peter Jenkner