Patents Represented by Attorney Wiliam J. Uhl

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  • Electrodepositable coating composition containing bismuth and amino acid materials and electrodeposition method
    Patent number: 5908912
    Abstract: An electrodepositable coating composition is provided comprising (a) an active hydrogen-containing, cationic salt group-containing resin electrodepositable on a cathode; (b) a curing agent for transurethanation, transamidation or transesterification curing like at least a partially capped polyisocyanate curing agent; and (c) a catalytic mixture of bismuth and an amino acid or amino acid precursor. Optionally, an auxiliary acid may be present to increase the effectiveness of the amino acid in the mixture with bismuth.
    Type: Grant
    Filed: June 3, 1997
    Date of Patent: June 1, 1999
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Raphael O. Kollah, Matthew S. Scott, Gregory J. McCollum, Joseph A. Bethoski