Thermosetting powder coating compositions

Details Thermosetting powder coating compositions Thermosetting powder coating compositions

C - Chemistry, Metallurgy

08

F

400/3016

C08F 283/02 (2006.01) C08F 220/10 (2006.01) C08F 299/04 (2006.01)

Patent

CA 1049684

Abstract of the disclosure: A thermosetting powder costing composition comprising: (A) a graft copolymer of a) 10 to 40 percent of a linear polyester having a number average molecular weight of 600 to 3,000 and containing one ethylenically unsaturated double bond only at one end of the molecule, b) 5 to 30 percent of at least one of glycidyl esters having the formula Image wherein R1 is hydrogen or methyl, and c) 10 to 85 percent of at least one of acrylic compounds having the formula of CH2=C(R2)COOR3, wherein R2 is hydrogen or methyl and R3 is alkyl having 1 to 14 carbon atoms cyclohexyl or hydroxyalkyl represented by Image wherein R4 is hydrogen, methyl or ethyl, said graft copolymer having a softening point of 70 to 110° C and a number average molecular weight of 2,000 to 30,000; and (B) at least one of polycarboxylic acids and anhydrides thereof in an amount of 0.6 to 1.2 moles in terms of carboxyl group per mole of the glycidyl group contained in the graft copolymer. - 1 -

230151

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