Resin composition for cationic electrodeposition coating
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United States of America Patent
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Jun 1, 1999
Grant Date -
N/A
app pub date -
May 22, 1997
filing date -
Jun 12, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Disclosed herein is a resin composition for cationic electrodeposition coating containing (A) an epoxy resin (a base resin) having cationic groups and (B) a blocked polyisocyanate (a curing agent), characterized in that, a blocked polyisocyanate (B) in which a part of the isocyanate groups is polymerized with a polyol and which is blocked by (1) a blocking agent represented by a formula R--(OC.sub.2 H.sub.3 X).sub.n --OH (wherein R is an alkyl having 1-6 carbon atom(s); X is H or methyl; and n is 1-6) and having a molecular weight of not less than 150 and also by (2) another blocking agent having a deblocking temperature of not higher than about 150.degree. C. is used.
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