Non-blooming polyester coating powder

Details Non-blooming polyester coating powder Non-blooming polyester coating powder

C - Chemistry, Metallurgy

09

D

C09D 167/00 (2006.01) C09D 5/03 (2006.01) C09D 167/02 (2006.01)

Patent

CA 2225667

In a coating powder composition comprising A) a polyester resin having carboxyl functionality so as to provide an acid number of between about 15 and about 100, plus B) epoxy curative at a stoichiometric equivalent relative to said polyester resin of between about 0.7 and about 1.3, blooming in the cured coating resulting therefrom is reduced or eliminated by incorporating within the polyester resin A) the monomer 2-butyl, 2-ethyl, 1,3-propane diol (BEPD) at a level to provide between 2 and 25 mole percent of the hydroxyl functionality relative to total hydroxyl functionality of hydroxyl-functional monomers forming the polyester resin.

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