Electrocoating compositions containing polyvinylpyrrolidone crater control agents
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United States of America Patent
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Oct 17, 2000
Grant Date -
N/A
app pub date -
Apr 22, 1999
filing date -
Apr 22, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Disclosed are electrodepositable coating compositions containing a polymer prepared from the polymerization of an ethylenically unsaturated monomer having a heterocyclic ring containing at least one ring nitrogen atom bonded to a vinyl group or a mixture of monomers comprised of such a monomer, the compositions further including contaminants capable of forming defects in the electrodeposited coating surface. The polymer is present in an amount effective to abate formation of the surface defects caused by the contaminants. A method of electrocoating a conductive substrate using the electrodepositable coating compositions of the invention is also disclosed.
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