Patents by Inventor Rainer Schönfeld

Rainer Schönfeld 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).

  • Oxazolidinone- and isocyanurate-crosslinked matrix for fiber-reinforced material
    Patent number: 10689476
    Abstract: The present invention relates to a method for producing a cured composition, which has at least one oxazolidinone ring and at least one isocyanurate ring and is crosslinked thereby, starting from a liquid reaction mixture comprising: (a) at least one liquid, aromatic epoxy resin; (b) at least one liquid, aromatic polyisocyanate; and (c) a catalyst composition; relative to the at least one polyisocyanate, the at least one epoxy resin is used in amounts such that the molar equivalent ratio of epoxide groups to isocyanate groups is at least 0.4; and curing the reaction mixture to give a cured polymer composition comprising at least one oxazolidinone ring and at least one isocyanurate ring, and also to the cured compositions obtainable by these methods.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: June 23, 2020
    Assignee: Henkel AG & Co. KGaA
    Inventors: Christian Holtgrewe, Harald Küster, Thomas Bachon, Andreas Ferencz, Olaf Lammerschop, Rainer Schönfeld, Claudia Mai
  • One-part curable adhesive composition and the use thereof
    Patent number: 10280346
    Abstract: The present invention relates to a one-part curable adhesive composition, in particular, a one-part adhesive composition having excellent initial and aged lap shear strength as well as low viscosity, and to the use thereof.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: May 7, 2019
    Assignee: Henkel AG & Co. KGaA
    Inventors: Haiping Wu, Thomas Bachon, Rainer Schonfeld, Xiaowei Lin, Zhenfeng Cao
  • Oxazolidinone- and Isocyanurate-Crosslinked Matrix for Fiber-Reinforced Material
    Publication number: 20180051119
    Abstract: The present invention relates to a method for producing a cured composition, which has at least one oxazolidinone ring and at least one isocyanurate ring and is crosslinked thereby, starting from a liquid reaction mixture comprising: (a) at least one liquid, aromatic epoxy resin; (b) at least one liquid, aromatic polyisocyanate; and (c) a catalyst composition; relative to the at least one polyisocyanate, the at least one epoxy resin is used in amounts such that the molar equivalent ratio of epoxide groups to isocyanate groups is at least 0.4; and curing the reaction mixture to give a cured polymer composition comprising at least one oxazolidinone ring and at least one isocyanurate ring, and also to the cured compositions obtainable by these methods.
    Type: Application
    Filed: June 14, 2017
    Publication date: February 22, 2018
    Inventors: Christian Holtgrewe, Harald Küster, Thomas Bachon, Andreas Ferencz, Olaf Lammerschop, Rainer Schönfeld, Claudia Mai
  • ONE-PART CURABLE ADHESIVE COMPOSITION AND THE USE THEREOF
    Publication number: 20180044565
    Abstract: The present invention relates to a one-part curable adhesive composition, in particular, a one-part adhesive composition having excellent initial and aged lap shear strength as well as low viscosity, and to the use thereof.
    Type: Application
    Filed: October 20, 2017
    Publication date: February 15, 2018
    Inventors: Haiping Wu, Thomas Bachon, Rainer Schonfeld, Xiaowei Lin, Zhenfeng Cao
  • Benzoxazine-containing formulations polymerizable/curable at low temperature
    Patent number: 8318878
    Abstract: The present invention relates to a catalyst, which is an organic component with electron withdrawing substituents and to compositions with such catalyst and at least one benzoxazine component, and the use of such compositions in adhesives, sealants and coatings.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: November 27, 2012
    Assignee: Henkel AG & Co. KGaA
    Inventors: Atsushi Sudo, Takeshi Endo, Andreas Taden, Rainer Schönfeld, Thomas Huver
  • Benzoxazine-formulations with reduced outgassing behaviour
    Patent number: 8158719
    Abstract: Polymerizable combinations, comprising at least one first component selected from the group of benzoxazine monomers and at least one second component selected from the group of aromatic esters are described. Further on the use of aromatic esters as additives to benzoxazine monomers as well as methods of coating a device by heating the above mentioned combination, and a device, coated by that way is explained.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: April 17, 2012
    Assignee: Henkel AG & Co. KGaA
    Inventors: Atsushi Sudo, Ryoichi Kudoh, Kazuya Uenishi, Takeshi Endo, Andreas Taden, Rainer Schönfeld, Thomas Huver
  • BENZOXAZINE-BASED COMPOSITIONS CONTAINING ISOCYANATE-BASED TOUGHENERS
    Publication number: 20110172356
    Abstract: The present invention relates to curable compositions comprising (a) at least one benzoxazine component selected from the group consisting of N-alkyl and N-alkenyl benzoxazines, and (b) a prepolymer produced from a diisocyanate. The compositions are particularly suitable in the production of adhesives and sealants, prepregs and towpregs.
    Type: Application
    Filed: March 18, 2011
    Publication date: July 14, 2011
    Inventors: Stefan Kreiling, Rainer Schonfeld, Andreas Taden, Michael Kux, Harald Küster, Stanley L. Lehmann