Patents by Inventor Rudolf DE Jong

Rudolf DE Jong 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).

  • Suspension polymerization of vinyl chloride wherein suspension agent is added after the monomer charge
    Patent number: 4525559
    Abstract: Vinyl chloride polymers and copolymers are produced by suspension polymerization in the presence of a small amount of specific ethylene-vinyl acetate copolymers. The catalysts, the ethylene-vinyl acetate copolymer, and the monomer or monomer mixture are added to the polymerization charge before the suspension agent. The resultant polyvinyl chloride is especially suitable for lowering the viscosity of polyvinyl chloride plastisols.
    Type: Grant
    Filed: August 20, 1982
    Date of Patent: June 25, 1985
    Assignee: Chemische Werke Huels AG
    Inventors: Gilbert Sielfeld, Rudolf de Jong
  • Expandable styrene polymers suitable for the production of quickly moldable cellular bodies
    Patent number: 3972843
    Abstract: Expandable styrene polymers suitable for the production of quickly moldable cellular bodies having reacted therein a uniformly distributed high molecular poly-1-butene which forms a discontinuous phase. The poly-1-butene includes mixed polymers of 1-butene, with 1-butene as the predominant amount and the concentration of poly-1-butene is about 0.01 to 2.0 percent by weight based on the weight of the polystyrene.
    Type: Grant
    Filed: March 24, 1975
    Date of Patent: August 3, 1976
    Assignee: Chemische Werke Huls Aktiengesellschaft
    Inventor: Rudolf DE Jong