Patents by Inventor Janice M. Sich

Janice M. Sich 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).

  • Preparation of isocyanate-terminated polyurethanes containing amino silanes
    Patent number: 4508889
    Abstract: A process is disclosed in which polyalkoxy amino silane adhesion promoters are incorporated into isocyanate-functional polyurethane resins formed by the reaction of a stoichiometric excess of organic polyisocyanate with an hydroxy-functional resin without producing cloudy and/or unstable resin solutions. In this process, the hydroxy-functional resin is prereacted with the alkoxy functionality of the amino silane in a reaction which liberates alcohol, and then a stoichiometric excess of the organic polyisocyanate is added to cause the isocyanate groups of the polyisocyanate to react with both the hydroxy groups and the amino hydrogen atoms present.
    Type: Grant
    Filed: July 19, 1984
    Date of Patent: April 2, 1985
    Assignee: DeSoto, Inc.
    Inventors: Gerry K. Noren, Erwin S. Poklacki, Fred D. Hawker, Janice M. Sich