Patents by Inventor Heinz-Juergen Overhoff

Heinz-Juergen Overhoff 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).

  • Thermoplastic molding materials
    Patent number: 4442263
    Abstract: Thermoplastic molding materials contain a copolymer A and a graft copolymer B. The copolymer A is a hard component comprising one or more copolymers of styrene and/or .alpha.-methylstyrene with from 20 to 40% by weight of acrylonitrile.The graft copolymer B comprises one or more crosslinked acrylate polymer with a mean particle size of 0.5-0.8 .mu.m (d.sub.50 value of the cumulative mass distribution), a particle distribution, expressed by the ratio ##EQU1## in the range Q.gtoreq.0.6, and a glass transition temperature Tg below 0.degree. C. A mixture of styrene and acrylonitrile in a weight ratio from 88:12 to 65:35 is grafted onto this rubber.
    Type: Grant
    Filed: July 16, 1982
    Date of Patent: April 10, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Brandstetter, Juergen Hambrecht, Rudolf Stephan, Heinz-Juergen Overhoff, Josef Schwaab, Claus Bernhard, Johann Swoboda, Adolf Echte
  • Process for the manufacture of impact resistant thermoplastic molding materials
    Patent number: 4421875
    Abstract: The invention relates to a process for the manufacture of impact resistant thermoplastic molding materials wherein potassium salts of saturated or unsaturated fatty acids with 10 to 30 carbon atoms are used as emulsifier.
    Type: Grant
    Filed: April 8, 1982
    Date of Patent: December 20, 1983
    Assignee: BASF Aktiengesellschaft
    Inventors: Graham E. McKee, Franz Brandstetter, Adolf Echte, Juergen Hambrecht, Heinz-Juergen Overhoff, Edmund Priebe, Josef Schwaab, Peter Siebel