Patents

BASF Coatings Japan Patents Paint

July 19, 2013

U.S. 8,236,895 B2
BASF Coatings Japan Ltd. has been awarded a patent for a paint composition comprised of a hydroxyl group containing resin comprised of a hydroxyl group value of from 80 to 220 mg KOH/g, a glass transition temperature of −50° C or above but below 0° C, and from 25 to 55 mass percent of units of 4-hydroxybutyl (meth)acrylate origin, a hydroxyl group containing resin comprised of a hydroxyl group value of from 80 to 220 mg KOH/g, and a glass transition temperature of from 0 to 50° C and a crosslinking agent comprised of a polyisocyanate compound having isocyanate groups, wherein the proportions of hydroxyl group containing resin and hydroxyl group containing resin are, as a ratio of solid fraction masses, from 95/5 to 50/50, and the proportion of isocyanate groups of the crosslinking agent with respect to the hydroxyl groups in total of the hydroxyl group containing resin and the hydroxyl group containing resin, as the NCO/OH mol ratio, is from 0.5 to 1.5.
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