Patents by Inventor Richard A. Bayards

Richard A. Bayards 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).

  • Powder paint binder composition
    Patent number: 6291581
    Abstract: The invention relates to a radiation curable binder composition for powder paint formulations. The binder composition comprises: a) a solid polymer with an amount of unsaturation of between 300 and 1800 g per mole of unsaturated group (WPU) and with a molecular weight (Mn) of between 800 and 5000 g per mole and b) a crosslinker comprising units of a prepolymer having a molecular weight (Mn) higher than 400 and units of a vinyl ether or an unsaturated alcohol, the number of polymerizable unsaturations of the crosslinker being higher than or equal to 2.
    Type: Grant
    Filed: March 8, 2000
    Date of Patent: September 18, 2001
    Assignee: DSM N.V.
    Inventors: Richard A. Bayards, Evert S De Jong, Saskia Udding-Louwrier
  • Powder paint binder composition
    Patent number: 5804646
    Abstract: The invention relates to a powder paint binder composition. The binder composition comprises a hydroxyl functional polymer and a crosslinker containing blocked isocyanate groups. The crosslinker includes (i) a crystalline compound containing blocked isocyanate groups and ii) an amorphous compound containing blocked isocyanate groups. Preferably the crosslinker is a mixture of blocked hexamethylene diisocyanate trimer and blocked 1,6-hexamethylene diisocyanate.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: September 8, 1998
    Assignee: DSM N.V.
    Inventors: Franciscus M. Witte, Richard A. Bayards, Marten Houweling