Patents Represented by Attorney K. M. Tackett

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  • Stable polyamide solutions
    Patent number: 4714736
    Abstract: Polyamide solutions for imparting wet strength to paper are stabilized by acidifying uncrosslinked polyamide solutions prior to storage or prior to crosslinking with epichlorohydrin to form polyamide resins. The acidification of the uncrosslinked solutions allows for storage without refrigeration. The acidification prior to crosslinking results in wet strength resins that are stable at solids concentrations of at least 30% and that exhibit high strength when the resins are post cooked to a viscosity of between about 325 and 425 cps.
    Type: Grant
    Filed: May 29, 1986
    Date of Patent: December 22, 1987
    Assignee: The Dow Chemical Company
    Inventors: Roger L. Juhl, James L. Potter, Sotiros C. Polemenakos