Patents Assigned to Chemische Werhe Huls AG
  • Small particulate expandable styrene polymer molding compositions
    Patent number: 4255525
    Abstract: Small particulate expandable styrene polymer molding compositions are prevented from acquiring static charges by coating with betaines.
    Type: Grant
    Filed: August 29, 1979
    Date of Patent: March 10, 1981
    Assignee: Chemische Werhe Huls AG
    Inventors: Josef K. Rigler, Wolfgang Schafer, Horst Leithauser, Karl Trukenbrod, Werner Bollmann