Patents by Inventor Helmut Sinner

Helmut Sinner 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).

  • Antistatic polyamide compositions with polyalkyleneglycol ether having secondary terminal urethane groups
    Patent number: 4163088
    Abstract: The invention relates to antistatic polyamide compositions comprising a polyamide and as an antistatic agent from 0.1 to 20%, preferably from 1.5 to 15%, by weight based on the total weight of the composition of urethanes with ether groups. The urethanes with ether groups are stable in melts of aliphatic polyamides for prolonged periods at temperatures of up to about 300.degree. C. and filaments and fibers of such polyamides or woven fabrics, knitted fabrics, non-woven or pile fabrics produced from these filaments or fibers show outstanding antistatic properties.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: July 31, 1979
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans E. Kunzel, Claus-Rudiger Bernert, Gunter Arend, Francis Bentz, Helmut Sinner, Dieter Brokmeier