Patents Represented by Attorney Laura Shunk
  • Patent number: 5380786
    Abstract: Polyvinyl chloride-acrylate copolymers are plasticized with plasticizers to produce a composition having low hardness values. For example, Shore A values of 55 or less can be readily achieved. Such low values are often achieved by utilizing low amounts, for example less than 100 parts by weight, of the plasticizer for every 100 parts by weight of the PVC-acrylate copolymer. Low Shore A hardness values are also aided by the use of high amounts of acrylate units in the copolymer, that is amounts of at least 45 percent by weight based upon the total weight of the copolymer. The copolymer is made from a vinyl constituent which is a vinyl chloride monomer with an optional vinyl component comonomer and one or more acrylate monomers having the formula ##STR1## wherein R.sup.1 is an aliphatic, an aromatic, or combinations thereof, having from 1 to 18 carbon atoms, or a halogen derivative thereof, or hydrogen, and R.sup.
    Type: Grant
    Filed: December 27, 1990
    Date of Patent: January 10, 1995
    Assignee: The Geon Company
    Inventors: William S. Greenlee, Josef C. Vyvoda, Roman W. Wypart
  • Patent number: 5034462
    Abstract: These polymers are copolymers or overpolymers having a substrate of styrene butadiene copolymer overpolymerized with an amine substituted alkyl acrylate. The polymers promote adhesion between organic and inorganic substrates and unsaturated polymers.
    Type: Grant
    Filed: July 5, 1990
    Date of Patent: July 23, 1991
    Assignee: The Uniroyal Goodrich Tire Company
    Inventors: Lothar F. Stiberth, James R. Miller, Sudhendra V. Hublikar