Patents by Inventor William E. Garrison, Jr.

William E. Garrison, Jr. 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).

  • Flame retardant polyethylene terephthalate
    Patent number: 4708980
    Abstract: If antimony oxide is added to a blend of polyethylene terephthalate/alkali metal organic carboxylate in the form of a concentrate in a polyamide, the destabilizing effect of the antimony oxide on the blend is minimized. This greatly improves the thermal stability of the polyethylene terephthalate blend during compounding and subsequent melt processing operations, as compared with similar compositions where the antimony oxide is added in the form of a concentrate with another organic polymer, viz., polyethylene, or is added neat.
    Type: Grant
    Filed: December 15, 1986
    Date of Patent: November 24, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: William E. Garrison, Jr.
  • Fast crystallizing polyester resin containing three-component crystallization system
    Patent number: 4548978
    Abstract: Fast crystallizing polyester molding composition comprising (a) a PET or PET/PBT matrix resin having an inherent viscosity of at least 0.4, (b) polyalkylene oxide soft segments incorporated into the matrix resin, (c) a plasticizer of the formula ##STR1## (d) a crystallization promoter, and (e) a reinforcing or filling material.
    Type: Grant
    Filed: February 22, 1985
    Date of Patent: October 22, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: William E. Garrison, Jr.