Patents by Inventor Donald J. Krzywicki

Donald J. Krzywicki 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).

  • Calendering of polyolefins
    Patent number: 4345046
    Abstract: A lubricant composition for processing polyolefin resins is disclosed. The lubricant composition comprises a mixture of from about 60 to 70 parts by weight of an N,N'-ethylenebis amide of a fatty acid or hydroxy-substituted fatty acid, from about 22 to about 32 parts by weight of a free fatty acid or hydroxy-substituted fatty acid, and from about 3 to about 13 parts by weight of a metal salt of a fatty acid or hydroxy-substituted fatty acid. The lubricant composition is particularly useful in the calendering of polypropylene homopolymers and copolymers.
    Type: Grant
    Filed: June 5, 1981
    Date of Patent: August 17, 1982
    Assignee: Tenneco Chemicals, Inc.
    Inventors: Adam J. Ejk, Donald J. Krzywicki