Patents by Inventor Willi R. Steckelberg

Willi R. Steckelberg 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).

  • Soil repellent fluorinated esters of multi-ring anhydride systems
    Patent number: 4595628
    Abstract: Fluorinated esters based on multi-ring anhydride systems are disclosed which have excellent anti-soiling properties, durability and resistance to laundering. The compounds are represented by the formula ##STR1## wherein n is 2 or 3, Q is a linking group such as --CO--, --O--, or (C.sub.a H.sub.2a+2-n --(O.sub.2 C).sub.n, R.sub.f is a fluorinated radical, and R is derived from an epoxide such as ethylene oxide or epichlorohydrin. Also disclosed are polyester and nylon fibers having these compounds incorporated therein, and a process for producing such soil-repellent fibers.
    Type: Grant
    Filed: July 30, 1984
    Date of Patent: June 17, 1986
    Assignee: American Hoescht Corporation
    Inventors: Michael G. Kelly, Willi R. Steckelberg
  • Soil repellent fluorinated esters of multi-ring anhydride systems
    Patent number: 4472466
    Abstract: Fluorinated esters based on multi-ring anhydride systems are disclosed which have excellent anti-soiling properties, durability and resistance to laundering. The compounds are represented by the formula ##STR1## wherein n is 2 or 3, Q is a linking group such as --CO--, --O--, or (C.sub.a H.sub.2a+2-n --(O.sub.2 C).sub.n, R.sub.f is a fluorinated radical, and R is derived from an epoxide such as ethylene oxide or epichlorohydrin. Also disclosed are polyester and nylon fibers having these compounds incorporated therein, and a process for producing such soil-repellent fibers.
    Type: Grant
    Filed: March 8, 1982
    Date of Patent: September 18, 1984
    Assignee: American Hoechst Corporation
    Inventors: Michael G. Kelly, Willi R. Steckelberg