Patents Assigned to Goldschmift AG
  • Water-insoluble poly(oxy-1,4-butanediyl)-containing polyoxyalkylene-polysiloxane block copolymers for defoaming aqueous media
    Patent number: 6525103
    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 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: February 19, 2002
    Date of Patent: February 25, 2003
    Assignee: Goldschmift AG
    Inventors: Thomas Ebbrecht, Wolfgang Josten, Michael Keup, Stefan Silber, Roland Sucker