Patents by Inventor Dolk Lee

Dolk Lee 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).

  • Interpolymers having color and heat stability as well as oxygen barrier properties
    Patent number: 4945134
    Abstract: The polymers of ethylenically unsaturated monomers exhibit a greater degree of clarity and a greater degree of heat stability than do vinylidene chloride copolymers but do not have the barrier properties of vinylidene chloride copolymers. The present invention is an emulsion polymerized interpolymer, which provides both clarity and low oxygen permeability to applications where such properties are required of a polymer, having two miscible phases, which comprises (a) a first phase of an effective amount of at least one ethylenically unsaturated monomer and (b) a second phase of an effective amount of vinylidene chloride monomer and at least one ethylenically unsaturated comonomer wherein the first phase and the second phase are miscible.
    Type: Grant
    Filed: December 12, 1988
    Date of Patent: July 31, 1990
    Assignee: The Dow Chemical Company
    Inventors: Karen L. Wallace, Dolk Lee