Patents by Inventor Jack W. Sigan

Jack W. Sigan 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).

  • Diol compositions
    Patent number: 4251385
    Abstract: A polyol composition consisting essentially of a homogeneous liquid or low melting solid admixture of propylene glycol and a diol obtained by alkoxylating a propylene glycol dispersion of 3,3',5,5' tetrabromobisphenol A with ethylene oxide, propylene oxide or mixtures thereof. These polyol compositions are useful in preparing fire and chemical resistant thermosetting resinous compositions.
    Type: Grant
    Filed: September 11, 1978
    Date of Patent: February 17, 1981
    Assignee: Sherex Chemical Company, Inc.
    Inventors: Jack W. Sigan, James G. Fuller
  • Mixtures of aliphatic amines and quaternary ammonium compounds thereof
    Patent number: 4098822
    Abstract: A mixture of specified long chain aliphatic alcohols is contacted at atmospheric pressure and at an elevated temperature with ammonia in the presence of a hydrogenation-dehydrogenation catalyst while continuously removing water of reaction and excess ammonia, to produce a mixture of aliphatic amines predominating in secondary amines. Such amine product is quaternized to yield corresponding mixtures of fabric softening quaternary ammonium compounds capable of providing aqueous dispersions thereof exhibiting outstanding stability characteristics at low concentrations of active content.
    Type: Grant
    Filed: October 26, 1973
    Date of Patent: July 4, 1978
    Assignee: Ashland Oil, Inc.
    Inventors: Richard R. Egan, Graham K. Hughes, Jack W. Sigan