Patents by Inventor Paul A. Pindris

Paul A. Pindris 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).

  • Process of dispersion polymerization of butadiene in propane or butane
    Patent number: 5270395
    Abstract: Butadiene is polymerized alone or with a monomer such as styrene in a dispersion in propane, butane or its mixtures with minor amounts of other C.sub.4 -C.sub.6 alkanes, e.g., n-pentane and a dispersant which is preferably a hydrogenated styrene/ conjugated diene block copolymer to achieve stable dispersions at higher solids and butadiene levels possible with similar alkane dispersants.
    Type: Grant
    Filed: November 16, 1990
    Date of Patent: December 14, 1993
    Assignee: BASF Corporation
    Inventors: Binnur Z. Gunesin, Paul A. Pindris
  • Process of dispersion polymerization of butadiene in propane or butane
    Patent number: 4985505
    Abstract: Butadiene is polymerized alone or with a monomer such as styrene in a dispersion in propane, butane or its mixtures with minor amounts of other C.sub.4 -C.sub.6 alkanes, e.g., n-pentane and a dispersant which is preferably a styrene/hydrogenated isoprene block copolymer to achieve stable dispersions at higher solids and butadiene levels possible with similar alkane dispersants.
    Type: Grant
    Filed: June 19, 1989
    Date of Patent: January 15, 1991
    Assignee: Mobil Oil Corporation
    Inventors: Binnur Z. Gunesin, Paul A. Pindris
  • High impact, highly transparent linear styrene-diene block copolymers with five or more blocks and their preparations by anionic dispersion polymerization
    Patent number: 4871814
    Abstract: High molecular weight linear block copolymers containing 5 or more alternating blocks of (A) polymerized styrene or alkyl substituted styrene units, and (B) polymerized conjugated diene units, terminated by (A) units, are prepared by anionic dispersion polymerization to give clear polymers having excellent physical properties.
    Type: Grant
    Filed: June 22, 1987
    Date of Patent: October 3, 1989
    Assignee: Mobil Oil Corporation
    Inventors: Binnur Z. Gunesin, Paul A. Pindris, Frederick C. Schwab