Patents by Inventor Rainer Graefe

Rainer Graefe 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).

  • Method of producing mixtures of polyvinyl chloride and polymers based on conjugated dienes and acrylonitrile
    Publication number: 20020068786
    Abstract: The invention relates to a method of producing mixtures of polyvinyl chloride and polymers based on conjugated dienes and acrylonitrile, by mixing powdered polyvinyl chloride with latexes based on conjugated dienes and acrylonitrile and then coagulating the mixture. The method according to the present invention represents an inexpensive and environmentally friendly method of producing the mentioned mixtures, the physical behavior of the resulting mixtures being no different to that of corresponding mixtures produced by the dry blend method or the latex blend method.
    Type: Application
    Filed: December 3, 2001
    Publication date: June 6, 2002
    Inventors: Rainer Graefe, Paul Krieger, Hans-Christian Strauch, Hans Magg, Dieter Lohr