Powder coating composition

Details Powder coating composition Powder coating composition

C - Chemistry, Metallurgy

09

D

C09D 5/03 (2006.01) C09D 133/04 (2006.01) C09D 133/06 (2006.01) C09D 163/00 (2006.01) C09D 163/06 (2006.01) C09D 167/00 (2006.01) C08L 63/00 (2006.01)

Patent

CA 2046046

Abstract of the disclosure A powder coating comprising, as main components. (A) a carboxyl group containing resin having a number average molecular weight of 1000-30000, an acid value of 5-200 KOH mg/g and a glass transition temp. of 20°- 120°C, and (B) a polyglycidyl compound obtained by addition of a polyester oligomer having 2 or more carboxyl groups and a number average molecular weight of 200-1200, with an epoxy compound of the formula: Image , the ratio of carboxyl groups in (A) to glycidyl groups in (B) being, in terms of equivalent ratio, 0.5 to 2Ø This powder coating may result a coating with excellent processability, impact strength and the like and is excellent in storage stability, hardening properties either at high or low temperature and even when used a stored powder may result a coating with excellent processability.

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