Polyester resin powder coating compositions

Details Polyester resin powder coating compositions Polyester resin powder coating compositions

C - Chemistry, Metallurgy

08

J

C08J 3/24 (2006.01) B05B 3/10 (2006.01) C09D 167/00 (2006.01)

Patent

CA 2180777

A method of curing polyester resin powder coating composition comprises reacting a polyester resin with an organometallic compound which is an alkoxy aluminium complex of an alkanolamine having a ratio of alkanolamino radicals to aluminium atoms in the range 0.3:1 to 16:1. In a particular embodiment the organometallic compound is a mixed metal complex derived from at least one aluminium alkoxide and at least one titanium alkoxide, the atomic ratio of Al:Ti being in the range 0.3:1 to 2:1. The compositions cure more quickly than known compositions containing titanium or zirconium compounds of alkanolamines and the cured coatings are less prone to yellowing.

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