Patents Represented by Attorney Margareta LaMaire

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  • Block copolymerization process and product
    Patent number: 4308357
    Abstract: A process for the preparation of ethylene-propylene block copolymers at high catalyst productivity rates resulting in polymer products having improved impact strength-polymerized ethylene content relationship.
    Type: Grant
    Filed: October 20, 1980
    Date of Patent: December 29, 1981
    Assignee: El Paso Polyolefins Company
    Inventors: Malcolm J. Kaus, Birendra K. Patnaik
  • Flame retardant polypropylene compositions
    Patent number: 4006114
    Abstract: A filled polypropylene composition having excellent flame retardance is prepared by blending polypropylene resin with chlorinated paraffin hydrocarbon, chlorinated polyethylene, antimony oxide and alumina trihydrate.
    Type: Grant
    Filed: November 26, 1975
    Date of Patent: February 1, 1977
    Assignee: Dart Industries Inc.
    Inventor: Allen William Carlson