Patents by Inventor Anton J. Sein

Anton J. Sein 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 coating composition employing mixture of polyepoxide resin with modified polyester resin
    Patent number: 4147737
    Abstract: Thermosetting coating compositions for powder coating processes, having a good powder stability, comprise a mixture of 4-25 wt % of a polyepoxide resin, the average molecule of which contains at least two epoxy groups, and 75-96 wt % of a solid modified polyester resin having an acid number of 30-100 and softens in the range of 60.degree. C.-130.degree. C. The solid modified polyester resin is the reaction product of an anhydride of a polybasic, organic carboxylic acid and a polyester having a hydroxyl number of 15-50 derived from a dibasic aromatic carboxylic acid and a specific alcohol component.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: April 3, 1979
    Assignee: Internationale Octrooi Maatschappij Octropa B.V.
    Inventors: Anton J. Sein, Johan Reitberg, Johan M. Schouten