Patents by Inventor Georg Wassmuth

Georg Wassmuth 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).

  • Patent number: 4880875
    Abstract: A thermoplastic molding material containing, based on components A, B and C,A from 10 to 90% by weight of one or more polycarbonates,B from 10 to 50% by weight of one or more graft copolymers,C from 10 to 50% by weight of one or more thermoplastic copolymers containing a vinylaromatic monomer of 8 to 12 carbon atoms and acrylonitrile,wherein component B is composed ofB.sub.1 a first, coarsely divided graft copolymer which has an average particle size of from 200 to 700 nm (d.sub.50 value of cumulative molecular weight distribution) in a proportion of from 30 to 70% by weight, based on B, andB.sub.2 a second, finely divided graft copolymer which has an average particle size of from 50 to 180 nm (d.sub.50 value of cumulative molecular weight distribution) in a proportion of from 70 to 30% by weight, based on B,is used for producing moldings.
    Type: Grant
    Filed: April 28, 1987
    Date of Patent: November 14, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Georg Wassmuth, Karl Ruppmich, Erhard Seiler, Hermann Gausepohl, Klaus Benker
  • Patent number: 4791158
    Abstract: Thermoplastic molding materials contain, as essential components,(A) from 10 to 89.99% by weight of a polyester,(B) from 10 to 89.99% by weight of a polycarbonate and(C.sub.1) from 0.01 to 1% by weight of a low molecular weight organic compound of not more than 70 carbon atoms which contains (--SO.sub.3).sub.m Q groups where Q is hydrogen, NH.sub.4 or an alkali or alkaline earth metal and m is an integer equal to the valency of Q, and/or(C.sub.2) from 0.01 to 30% by weight of a polymer containing sulfo groups and having a weight average molecular weight of not less than 1000,and, as a further component,(D) from 0 to 30% by weight of a rubber impact modifier.
    Type: Grant
    Filed: July 10, 1987
    Date of Patent: December 13, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Dietrich Lausberg, Graham E. McKee, Christof Taubitz, Georg Wassmuth, Manfred Knoll
  • Patent number: 4788253
    Abstract: The invention relates to a thermoplastic molding material of an elastomeric polymer A, a shell B grafted to the polymer A, and a copolymer C as rigid matrix. The amount of polymer A is 1 to 25 percent by weight based on the weight of A+B+C. It has a glass transition temperature, Tg, of less than 0.degree. C. and an average particle size of 200 to 750 nanometers (d.sub.50 value of the integral mass distribution) and is composed of: 50 to 99.9 percent by weight of at least one alkylacrylate with 1 to 8 carbon atoms in the alkyl radical and 0.1 to 5 percent by weight of a polyfunctional monomer which has a crosslinking action. Grafting shell B represents 5 to 40 percent by weight based on A+B+C and is composed of at least one of the monomers of the group of(b.sub.1) vinylaromatic monomers, and(b.sub.2) the ethylenically unsaturated monomers.Grafting shell B is prepared in two stages with 30 to 70 percent by weight of the monomers b.sub.
    Type: Grant
    Filed: April 17, 1987
    Date of Patent: November 29, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Juergen Hambrecht, Burghard Schmitt, Johann Swoboda, Georg Wassmuth, Claus Bernhard, Rudolf Stephan
  • Patent number: 4634734
    Abstract: The invention relates to a thermoplastic molding material of an elastomeric polymer A, a shell B grafted to the polymer A, and a copolymer C as rigid matrix. The amount of polymer A is 1 to 25 percent by weight based on the weight of A+B+C. It has a glass transition temperature, Tg, of less than 0.degree. C. and an average particle size of 200 to 750 nanometers (d.sub.50 value of the integral mass distribution) and is composed of: 50 to 99.9 percent by weight of at least one alkylacrylate with 1 to 8 carbon atoms in the alkyl radical and 0.1 to 5 percent by weight of a polyfunctional monomer which has a crosslinking action. Grafting shell B represents 5 to 40 percent by weight based on A+B+C and is composed of at least one of the monomers of the group of(b.sub.1) vinylaromatic monomers, and(b.sub.2) the ethylenically unsaturated monomers.Grafting shell B is prepared in two stages with 30 to 70 percent by weight of the monomers b.sub.
    Type: Grant
    Filed: February 15, 1984
    Date of Patent: January 6, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Juergen Hambrecht, Burghard Schmitt, Johann Swoboda, Georg Wassmuth, Claus Bernhard, Rudolf Stephan