Patents Assigned to Golschmidt AG
  • Use of water-insoluble poly(oxy-1,4-butanediyl)-containing polyoxyalkylene-polysiloxane block copolymers for defoaming aqueous media
    Patent number: 6451863
    Abstract: The invention relates to the use of water-insoluble poly(oxy-1,4-butanediyl)-containing polyoxyalkylene-polysiloxane block copolymers of the general average formula wherein the variables and indices are described herein as defoaming agents for aqueous media. This invention also provides for defoaming compositions comprising said Water-insoluble poly(oxy-1,4-butanediyl)-containing polyoxyalkylene-polysiloxane block copolymers.
    Type: Grant
    Filed: May 11, 2000
    Date of Patent: September 17, 2002
    Assignee: Golschmidt AG
    Inventors: Thomas Ebbrecht, Wolfgang Josten, Michael Keup, Stefan Silber, Roland Sucker