Patents Assigned to Dow Corning Silicone Company, Ltd.
  • Hyperbranched polymers and methods for the preparation, cure, and stabilization thereof
    Patent number: 6307081
    Abstract: This invention relates to a macromonomer and a method for its preparation. The macromonomer has one or more silicon-bonded hydrogen atoms at one molecular chain terminal, and one or more aliphatically unsaturated silicon-bonded organic groups at the other molecular chain terminal. This invention further relates to a method of forming a hyperbranched polymer by polymerizing the macromonomer with a group VIII metal catalyst. The hyperbranched polymers can be used as surfactants, gelling agents, drug delivery systems, and polymeric absorbents.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: October 23, 2001
    Assignee: Dow Corning Silicone Company, Ltd.
    Inventors: Kyosuke Takiuchi, Tadashi Okawa, Stephen Edward Cray, Aziz Muzafarow