Patents by Inventor Stephen H. Korzeniowski

Stephen H. Korzeniowski 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).

  • Fluorine-containing copolymers
    Patent number: 4716208
    Abstract: Polymers containing by weight (i) from about 50 to about 85 parts of units derived from at least one monomer (FM) having the formula ##STR1## wherein R.sub.f is straight or branched-chain perfluoroalkyl containing 4-20 carbons;R is H or CH.sub.3 ; andn is an integer from 1-15;and (ii) from about 50 to about 15 parts of units derived from 3-chloro-2-hydroxypropyl methacrylate and/or acrylate (CHPM/A) or their bromo analogs. Preferably, the polymers contain by weight between 65 and 75 parts of units derived from FM and 35-25 parts of units derived form CHPM/A, particularly a copolymer consisting essentially by weight of 75 percent of a mixture of FM and 25 percent of CHPM. Polymers impart superior oil- and water-repellency and anti-soiling characteristics to fibrous substrates, and may be applied as a spin finish, particularly to nylon filaments.
    Type: Grant
    Filed: August 14, 1985
    Date of Patent: December 29, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Stephen H. Korzeniowski