Patents by Inventor Wilhelm Offermann

Wilhelm Offermann 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).

  • Anti-settling agents for pigmented aqueous lacquer and process for the manufacture of said agents
    Patent number: 4071487
    Abstract: Water-dispersible (including water-soluble) salts of water-soluble amines with the anionic products formed by reacting at 200.degree. C. to 250.degree. C. a substantially neutral ester of a C.sub.14-20 saturated fatty alcohol with an ethylene-dicarboxylic acid which has been reacted with about 1/7 to 1/35 of its weight of a ethylenedicarboxylic compound of acidic character (for example maleic acid) are efficient agents for inhibiting the deposition of pigment in pigmented aqueous lacquers. Organic solutions of the salts are storage-stable. The salts can be incorporated into the lacquer during formulation of the lacquer or at a later point.
    Type: Grant
    Filed: January 22, 1976
    Date of Patent: January 31, 1978
    Assignee: Henkel KGaA
    Inventors: Heinz Linden, Wolfgang Gress, Wilhelm Offermann