Patents by Inventor James H. Paslean

James H. Paslean 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).

  • Decolorizing ethanolamines with alkylene oxides
    Patent number: 4673762
    Abstract: It has been found that a small amount of alkylene oxide prevents Pt-Co color buildup in mono, di and triethanolamine. Alkylene oxide also reduces undesirable blue, aqua or straw hues which may develop.
    Type: Grant
    Filed: May 27, 1986
    Date of Patent: June 16, 1987
    Assignee: Texaco Inc.
    Inventors: James H. Paslean, Charles S. Steele
  • Method of decolorizing mixtures of aminoethylpiperazine, a polyoxypropylenediamine and alkylphenols with N,N-diethylhydroxylamine
    Patent number: 4487987
    Abstract: A method of eliminating color-causing impurities in mixtures of aminoethylpiperazine, polyoxypropylenediamines and alkylphenols by treatment with N,N-diethylhydroxylamine is described. These alkylphenols such as nonylphenol are used in epoxy resins in the automotive and electronics industry. Discoloration of the phenol and subsequent resin occurs if the phenol is not treated with N,N-diethylhydroxylamine. Quantities on the order of 20 to 500 ppm are effective. The decolorization reaction may be conducted at a temperature in the range from about 25.degree. to 50.degree. C.
    Type: Grant
    Filed: June 9, 1983
    Date of Patent: December 11, 1984
    Assignee: Texaco Inc.
    Inventors: James H. Paslean, Charles S. Steele