Patents Represented by Attorney C. Kennth Bjork

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  • Process for decolorizing polyethylene polyamines with a chlorinated hydrocarbon
    Patent number: 4609436
    Abstract: A process for decolorizing polyethylene polyamines using a chlorinated hydrocarbon. The discolored polyethylene polyamine and chlorinated hydrocarbon are contacted to form a decolorizing mixture, and the mixture is distilled. The decolored polyethylene polyamine is collected from the distillate.
    Type: Grant
    Filed: January 4, 1985
    Date of Patent: September 2, 1986
    Assignee: The Dow Chemical Company
    Inventor: Jacobus T. M. Bakkum