Patents Represented by Attorney P. D. Sheperd

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  • Water-in-oil emulsions having improved low temperature properties
    Patent number: 4506051
    Abstract: The low temperature properties (i.e., the stability of the emulsion upon repeated freeze-thaw cycles and/or the fluidity of the emulsion at low temperatures such as -20.degree. C.) of a self-inverting water-in-oil emulsion of a water-soluble polymer are improved by incorporating an N,N-dialkyl amide in the emulsion.
    Type: Grant
    Filed: September 9, 1983
    Date of Patent: March 19, 1985
    Assignee: Dow Chemical Rheinwerk GmbH
    Inventor: Robert W. Rance