Patents Represented by Attorney William Conger

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  • Amino group-containing graft polymer, and its use as a dispersing viscosity index improver
    Patent number: 5026494
    Abstract: An amino group containing graft polymer comprising a main chain polymer having allyl amine grafted onto it whereby the main chain polymer is a hydrogenated olefin/diene copolymer and the total nitrogen content of the graft copolymer is from 0.001 to 0.05 weight percent.
    Type: Grant
    Filed: May 8, 1990
    Date of Patent: June 25, 1991
    Assignee: BASF
    Inventors: Walter Denzinger, Helmut Mach, Juergen Mohr, Knut Oppenlaender, Roland Schwen, Hans-Henning Vogel