Patents by Inventor Walter Schunter

Walter Schunter 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).

  • Cosmetic agent containing at least one copolymer having N-vinyllactam units
    Patent number: 7459148
    Abstract: The present invention relates to a cosmetic composition which comprises at least one water-soluble or water-dispersible copolymer which is obtainable by free-radical copolymerization of at least one N-vinyllactam, at least one anionogenic monomer and optionally further ?,?-ethylenically unsaturated compounds copolymerizable therewith, in the presence of a polymer component with repeat units which have ether groups or which are derived from vinyl alcohol.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: December 2, 2008
    Assignee: BASF Aktiengesellschaft
    Inventors: Son Nguyen-Kim, Peter Hoessel, Walter Schunter
  • Cosmetic agent containing at least one copolymer having nvinyllactam units
    Publication number: 20050053566
    Abstract: The present invention relates to a cosmetic composition which comprises at least one water-soluble or water-dispersible copolymer which is obtainable by free-radical copolymerization of at least one N-vinyllactam, at least one anionogenic monomer and optionally further ?,?-ethylenically unsaturated compounds copolymerizable therewith, in the presence of a polymer component with repeat units which have ether groups or which are derived from vinyl alcohol.
    Type: Application
    Filed: December 10, 2002
    Publication date: March 10, 2005
    Inventors: Son Nguyen-Kim, Peter Hossel, Walter Schunter
  • Aqueous cationic tenside preparations, method for the production and use thereof
    Patent number: 6509012
    Abstract: The disclosure sets forth aqueous cationic surfactant formulations and a process for their preparation. The formulations contains in solution a) from 10 to 50% by weight of a quaternary ammonium compound of the formula I: where: the substituents have the meanings set forth in the description, and b) from 0.01 to 15% by weight of an amine of the formula III: and c) from 0.1 to 5.0% by weight of a buffer which maintains a pH in a range from 4 to 9. The surfactant formulation is prepared by reacting an amine of the formula III in aqueous solution with a dialkyl sulfate of the formula IV where R1 to R5 are in a molar ratio range from 85 to 99.99 mol %, based on the amine and at from 20 to 100 degrees C. and then adding to the reaction solution from 0.1 to 5.0% by weight of a buffer which maintains a pH in a range from 4 to 9.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: January 21, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Hössel, Michael Zirnstein, Walter Schunter, Friedrich Wirsing, Wolfgang Kasel, Knut Oppenländer