Patents Represented by Attorney Willliam J. Uhl

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  • Waterborne coating compositions having improved smoothness
    Patent number: 5684072
    Abstract: A waterborne coating composition having improved smoothness is provided which contains a polymeric film-forming resin in aqueous medium and from about 0.1 percent to about 10 percent by weight based on total weight of resin solids of at least one material having the following structure: ##STR1## where n is an integer that is at least 1, R.sup.1 is hydrogen or lower alkyl having 1 to 10 carbon atoms, R.sup.2 is a divalent organic radical, and R.sup.3 is an alkyl, aryl, or alkylaryl group having 1 to 20 carbon atoms.
    Type: Grant
    Filed: March 22, 1995
    Date of Patent: November 4, 1997
    Assignee: PPG Industries, Inc.
    Inventors: Daniel E. Rardon, Roxalana L. Martin, Dennis L. Faler, James E. Poole