Patents by Inventor Stefan Auffarth

Stefan Auffarth 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: 9944793
    Abstract: The present invention relates to a composite material comprising nanoporous particles and at least one binder constructed from at least one isocyanate and at least one polymer P selected from the group consisting of polyvinylamine, poly(meth)acrylic acid, poly(meth)acrylic ester, polyvinyl alcohol, polyvinylthiol and mixtures thereof, wherein said at least one binder is used in an amount of 0.1 to 20 wt %, based on the amount of nanoporous particles, a composition for producing a composite material of this type, a process for producing a composite material of this type, shaped articles comprising said composite material and the use of said composite material for thermal and/or acoustical insulation.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: April 17, 2018
    Assignee: BASF SE
    Inventors: Berend Eling, Stefan Auffarth
  • Publication number: 20160264710
    Abstract: The invention relates to stable silicon dioxide dispersions and also their use for producing polyurethanes. The silicon dioxide dispersions are largely or preferably completely free of water and comprise silicon dioxide particles having an average diameter of 1-150 nm and at least one chain extender. The silicon dioxide particles can be modified by means of a silane (S) which comprises groups which are reactive toward isocyanates. Furthermore, a polyol, in particular a polyesterol and/or an isocyanate-comprising compound can be comprised in the silicon dioxide dispersions.
    Type: Application
    Filed: March 13, 2015
    Publication date: September 15, 2016
    Applicant: BASF SE
    Inventors: Berend Eling, Marine Boudou, Stefan Auffarth, Oliver Reese
  • Patent number: 9403932
    Abstract: Provided is a process for producing silicate-comprising polyols, comprising (i) admixing an aqueous silica sol (K) having an average particle diameter 1-150 nm, silica content 1-60% by weight and a pH of 1-6, with a 0.1- to 20-fold amount of at least one organic solvent (L), (ii) admixing the resulting mixture with a polyol, (iii) removing at least partially water and the organic solvent (L) by distillation, (iv) admixing with 0.1-30 mol % of at least one compound (S) which has at least one at least monoalkoxylated silyl group and at least an alkyl, cycloalkyl or aryl substituent, which may contain heteroatoms, wherein the substituent optionally contains a group reactive toward an alcohol, an amine or an isocyanate, and (v) optionally adjusting the pH of the silicate-comprising polyol to 7-12 by addition of a basic compound.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: August 2, 2016
    Assignee: BASF SE
    Inventors: Berend Eling, Zeljko Tomovic, Stefan Auffarth, Alexander Traut
  • Publication number: 20150240076
    Abstract: The present invention relates to a composite material comprising nanoporous particles and at least one binder constructed from at least one isocyanate and at least one polymer P selected from the group consisting of polyvinylamine, poly(meth)acrylic acid, poly(meth)acrylic ester, polyvinyl alcohol, polyvinylthiol and mixtures thereof, wherein said at least one binder is used in an amount of 0.1 to 20 wt %, based on the amount of nanoporous particles, a composition for producing a composite material of this type, a process for producing a composite material of this type, shaped articles comprising said composite material and the use of said composite material for thermal and/or acoustical insulation.
    Type: Application
    Filed: June 3, 2013
    Publication date: August 27, 2015
    Applicant: BASF SE
    Inventors: Berend Eling, Stefan Auffarth
  • Patent number: 8901186
    Abstract: Process for producing silica-comprising dispersions comprising a polyetherol or a polyether amine, which comprises the steps of (i) admixing an aqueous silica sol (K) having an average particle diameter of from 1 to 150 nm and a silica content, calculated as SiO2, of from 1 to 60% by weight and a pH of from 1 to 6 with at least one polyetherol (b1) and/or polyether amine (b2) based on ethylene oxide and/or propylene oxide and having an average OH or amine functionality of from 2 to 6 and a number average molecular weight of from 62 to 6000 g/mol, (ii) distilling off at least part of the water, (iii) admixing the dispersion with at least one compound (S) having at least one at least monoalkoxylated silyl group and at least one alkyl, cycloalkyl or aryl substituent, where this substituent may have groups which are reactive toward an alcohol, an amine or an isocyanate in an amount of from 0.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: December 2, 2014
    Assignee: BASF SE
    Inventors: Berend Eling, Zeljko Tomovic, Stefan Auffarth
  • Publication number: 20120142240
    Abstract: The invention relates to an aerogel composite material, a process and a composition for producing the composite material, and also the use of the composite material.
    Type: Application
    Filed: December 6, 2011
    Publication date: June 7, 2012
    Applicant: BASF SE
    Inventors: Berend Eling, Stefan Auffarth, Shane Mc Donnell
  • Publication number: 20120065341
    Abstract: The invention relates to stable silicon dioxide dispersions and also their use for producing polyurethanes. The silicon dioxide dispersions are largely or preferably completely free of water and comprise silicon dioxide particles having an average diameter of 1-150 nm and at least one chain extender. The silicon dioxide particles can be modified by means of a silane (S) which comprises groups which are reactive toward isocyanates. Furthermore, a polyol, in particular a polyesterol and/or an isocyanate-comprising compound can be comprised in the silicon dioxide dispersions.
    Type: Application
    Filed: September 9, 2011
    Publication date: March 15, 2012
    Applicant: BASF SE
    Inventors: Berend Eling, Marine Boudou, Stefan Auffarth, Oliver Reese
  • Publication number: 20110313070
    Abstract: Process for producing silica-comprising dispersions comprising a polyetherol or a polyether amine, which comprises the steps of (i) admixing an aqueous silica sol (K) having an average particle diameter of from 1 to 150 nm and a silica content, calculated as SiO2, of from 1 to 60% by weight and a pH of from 1 to 6 with at least one polyetherol (b1) and/or polyether amine (b2) based on ethylene oxide and/or propylene oxide and having an average OH or amine functionality of from 2 to 6 and a number average molecular weight of from 62 to 6000 g/mol, (ii) distilling off at least part of the water, (iii) admixing the dispersion with at least one compound (S) having at least one at least monoalkoxylated silyl group and at least one alkyl, cycloalkyl or aryl substituent, where this substituent may have groups which are reactive toward an alcohol, an amine or an isocyanate in an amount of from 0.
    Type: Application
    Filed: March 11, 2010
    Publication date: December 22, 2011
    Applicant: BASF SE
    Inventors: Berend Eling, Zeljko Tomovic, Stefan Auffarth
  • Publication number: 20110266497
    Abstract: Process for producing silicate-comprising polyols, which comprises the steps (i) admixing of an aqueous silica sol (K) having an average particle diameter of from 1 to 150 nm and a silica content, calculated as SiO2, of from 1 to 60% by weight and having a pH of from 1 to 6, based on the SiO2 content used, with a 0.
    Type: Application
    Filed: October 8, 2009
    Publication date: November 3, 2011
    Applicant: BASF SE
    Inventors: Berend Eling, Zeljko Tomovic, Stefan Auffarth, Alexander Traut