Patents by Inventor Leendert J. Molhoek

Leendert J. Molhoek 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).

  • Composition suitable for a powder coating composition comprising at least one resin and at least one dispersant
    Patent number: 8138240
    Abstract: Composition suitable for a powder coating composition comprising at least one resin and at least one dispersant wherein the dispersant is added during the resin synthesis or while the resin leaves the reactor.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: March 20, 2012
    Assignee: DSM IP Assets B.V.
    Inventors: Leendert J. Molhoek, Jurjen H. M. Bolks, Jochum Beetsma
  • Powder paint of epoxy-reactive polymer and aliphatic chain-containing polyepoxide
    Patent number: 5728779
    Abstract: A binder composition for thermosetting powder paints comprising (i) a polymer that is capable of reacting with epoxy groups and (ii) a crosslinker that contains epoxy groups, wherein the crosslinker comprises at least one C.sub.5 to C.sub.26 linear or branched aliphatic chain with the proviso that epoxy groups are carried on at least one aliphatic chain. In order to function as a crosslinker the amount of oxirane-oxygen originating from the crosslinker in the binder composition is higher than 0.1 meq/gram. The crosslinker is, for example, an epoxydized oil, a modified epoxydized oil or an epoxydized alkyd resin. A powder paint comprising the binder composition can contain a suitable catalyst and, optionally, an additional curing agent.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: March 17, 1998
    Assignee: DSM N.V.
    Inventors: Adrianus J. van de Werff, Leendert J. Molhoek, Marten Houweling, Robert van den Berg Jeths, Dirk A. W. Stanssens, Robert van der Linde, Tosko A. Misev