Cathodic electrocoat having a carbamate functional resin and a carbamate functional reactive additive
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United States of America Patent
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Oct 29, 2002
Grant Date -
Jan 3, 2002
app pub date -
Jul 17, 2001
filing date -
Dec 15, 1999
priority date (Note) -
Expired
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Abstract
The invention provides a cathodic electrocoat coating composition having (A) a polymer comprising at least one primary carbamate group and at least one cationic salting site, (B) a curing agent having groups that are reactive with said functional groups on (A), and (C) a reactive additive comprising at least one compound having a molecular weight of from 131 to 2000 and comprising at least one primary carbamate group and at least one alkyl group selected from the group consisting of branched alkyl groups of from 5 to 30 carbons, straight chain alkyl groups of more than 10 carbons, and mixtures thereof, wherein one or both of (A) and (B) comprise groups that are reactive with the primary carbamate group of (C).
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