Patents Represented by Attorney P. N. Jansson

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  • Asbestos-free asphalt coatings
    Patent number: 4759799
    Abstract: An improved asphalt roof-coating composition of the asbestos-free type which include asphalt cutback, clay, a surfactant, and fillers. An alkyloxyalkylamine salt surfactant, preferably an alkyloxypropylamine salt having an alkyl chain with from 10 to 20 carbon atoms is utilized in substantially lower amounts than required of surfactants in previous compositions. Excellent stable gel structure and easier blending are provided.
    Type: Grant
    Filed: August 21, 1986
    Date of Patent: July 26, 1988
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Stephen J. Vicenzi