Resin composition for powder coating
AssigneeNippon Ester Co., Ltd.
InventorsTokuzo Nozaki, Katsuyoshi Atsumi, Makiko Sakai
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Abstract
a resin composition for a powder coating comprising a polyester A, which does not substantially set to gel and has a hydroxyl value of at least 1,200 g eq/10.sup.6 g, a polyester B, which does not substantially set to gel and has a hydroxyl value of from 200 to 1,000 g eq/10.sup.6 g, and an inner blocked isocyanate hardener, wherein the weight ratio of polyester A to polyester B is from 70:30 to 10:90 and the difference (absolute value) in gel time between these polyesters A and B is at least 3 minutes.
Claims6
A resin composition for a powder coating comprising a polyester A which does not substantially set to gel and has a hydroxyl value of at least 1,200 g eq/10.sup.6 g, a polyester B which does not substantially set to gel and has a hydroxyl value of from 200 to 1,000 g eq/10.sup.6 g, and an inner blocked isocyanate hardener, containing, self-blocked isocyanate groups of the formula:
- ##STR2## wherein the weight ratio of said polyester A to said polyester B is 70:30 to 10:90 and the difference (absolute value) in gel time between said polyester A and said polyester B is at least 3 minutes.
Dependencies are inferred from the claim text.