Patents by Inventor Carol R. Barvinchak

Carol R. Barvinchak 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).

  • Polypropylene impact copolymer compositions
    Patent number: 8044135
    Abstract: The present invention relates to an impact-resistant olefin polymer composition including a polypropylene matrix having a weight average molecular weight and an ethylene-containing polymer including an ethylene-propylene copolymer having a molecular weight higher than the weight average molecular weight of the polypropylene matrix, the composition containing about 20 to 35 percent xylene solubles, and the xylene solubles fraction of the composition containing less than about 39 weight percent ethylene units, based on the combined weight of olefin monomers in the copolymer. The present invention further relates to impact copolymer compositions with a melt flow rate greater than about 8 that meet or exceed all pallet testing requirements.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: October 25, 2011
    Assignee: Braskem America, Inc.
    Inventors: Antonios K. Doufas, Carol R. Barvinchak, Edward Catalina
  • POLYPROPYLENE IMPACT COPOLYMER COMPOSITIONS
    Publication number: 20110207883
    Abstract: The present invention relates to an impact-resistant olefin polymer composition including a polypropylene matrix having a weight average molecular weight and an ethylene-containing polymer including an ethylene-propylene copolymer having a molecular weight higher than the weight average molecular weight of the polypropylene matrix, the composition containing about 20 to 35 percent xylene solubles, and the xylene solubles fraction of the composition containing less than about 39 weight percent ethylene units, based on the combined weight of olefin monomers in the copolymer. The present invention further relates to impact copolymer compositions with a melt flow rate greater than about 8 that meet or exceed all pallet testing requirements.
    Type: Application
    Filed: February 24, 2010
    Publication date: August 25, 2011
    Inventors: Antonios K. Doufas, Carol R. Barvinchak, Edward Catalina