Patents by Inventor Wendy J. Cook

Wendy J. Cook 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 particles based on a vinyl acetate ethylene copolymerizate processes for the production thereof and the use thereof
    Patent number: 6667352
    Abstract: The invention relates to protective colloid-stabilized copolymerizate latex particles with a heterogeneous morphology based on a vinyl acetate-ethylene copolymerizate and optionally further monomers, the latex particles having an ethylene content of less than 30 wt. %, based oh the total monomer quantity, comprising an outer phase with a polymer of vinyl acetate and approximately 0 to 40 wt. % ethylene, based on the monomers of the outer phase, and an inner phase with a polymer of vinyl acetate and approximately 0 to 40 wt. % ethylene; based on the monomers of the inner phase and in which at least one of the two phases contains ethylene. The invention also relates to a process for the preparation of acqueous dispersions of copolymerizate latex particles with heterogeneous morphology and the use thereof. The invention is characterized in that the heterogeneous morphology can be obtained in a planned manner, i.e.
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: December 23, 2003
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Jos M. H. Kusters, Robert Koelliker, Florin I. Vlad, Wendy J. Cook