Patents by Inventor Bettye W. Greene

Bettye W. Greene 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).

  • Latex based adhesive prepared by emulsion polymerization
    Patent number: 4968740
    Abstract: A latex based adhesive comprising a first component (adhesive component) comprising an interpolymer of at least one hard monomer, at least one soft monomer, and optionally a copolymerizable carboxylic acid comonomer having a Tg of from about -70.degree. C. to about -5.degree. C. and a second polymeric component (tackifier component) that is compatible with the adhesive component having a molecular weight less than 5,000 and a Tg from about -10.degree. C. to about 50.degree. C., both the adhesive component and tackifier component having been separately prepared by emulsion polymerization techniques.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: November 6, 1990
    Assignee: The Dow Chemical Company
    Inventors: Ashok C. Makati, Do I. Lee, Bettye W. Greene, Robert T. Iwamasa
  • Composite sheet prepared with stable latexes containing phosphorus surface groups
    Patent number: 4609434
    Abstract: A phosphorus modified latex composition useful in the coating of substrates with inorganic fillers. A latex particle having phosphorus groups intimately bound to the particle's surface formed by the emulsion polymerization of a latex with a phosphorus compound. Also a method of preparing a composite sheet and a paper coating latex with the phosphorus modified latex is provided.
    Type: Grant
    Filed: October 11, 1984
    Date of Patent: September 2, 1986
    Assignee: The Dow Chemical Company
    Inventors: Bettye W. Greene, Sun-Lin Chen
  • Stable latexes containing phosphorus surface groups
    Patent number: 4506057
    Abstract: A phosphorus modified latex composition useful in the coating of substrates with inorganic fillers. A latex particle having phosphorus groups intimately bound to the particle's surface formed by the emulsion polymerization of a latex with a phosphorus compound. Also a method of preparing a composite sheet and a paper coating latex with the phosphorus modified latex is provided.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: March 19, 1985
    Assignee: The Dow Chemical Company
    Inventors: Bettye W. Greene, Sun-Lin Chen