Thermosetting powder coating polyesters

Details Thermosetting powder coating polyesters Thermosetting powder coating polyesters

C - Chemistry, Metallurgy

08

G

117/183, 402/202

C08G 63/12 (2006.01) C08G 18/42 (2006.01) C08G 18/80 (2006.01) C08G 63/20 (2006.01) C08K 5/16 (2006.01) C08K 5/34 (2006.01) C08L 67/00 (2006.01) C09D 167/00 (2006.01) C09D 175/06 (2006.01)

Patent

CA 1124940

ABSTRACT Thermosettable polyester resin compositions, suitable for use in powder coating applications are derived from a polymerization reaction mixture compris- ing a dicarboxylic aromatic component (e.g., 1,4-ben- zenedicarboxylic acid), a trihydroxy alkyl component (e.g., 2-ethyl-2-(hydroxymethyl)-1,3-propanediol), a diol component (e.g.,1,6- hexanediol). Polyesters of the present invention have a number average molecular weight of from about 2,000 to about 6,000, a combined acid and hydroxyl number of from 35 to 70 milligrams of KOH per gram of polyester, and a transition temperature of from 35°C to 50°.

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