Patents by Inventor Jan O. Laundal

Jan O. Laundal 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).

  • Method for the production of silane containing crosslinked PVC copolymer
    Patent number: 5561191
    Abstract: Method for the production of a thermostable crosslinked PVC copolymer where the crosslinking is carried out in the presence of humidity and after processing of the polymer. The copolymer is a copolymer of vinyl chloride and 0.05-10 weight % of a vinyl containing alkoxysilane compound. Preferably methacryloxy-propyltrimethoxy-silane or methacryloxy-propyltriethoxysilane is used as comonomer. The crosslinking can be carried out independent of the type of stabilizer. A condensation catalyst and also an inhibitor can be used to prevent too early crosslinking.
    Type: Grant
    Filed: March 6, 1995
    Date of Patent: October 1, 1996
    Assignee: Norsk Hydro A.S
    Inventors: Morten Lundquist, Jan O. Laundal