Thermosetting compositions containing carboxylic acid...

Details Thermosetting compositions containing carboxylic acid... Thermosetting compositions containing carboxylic acid...

C - Chemistry, Metallurgy

08

G

C08G 59/42 (2006.01) B05D 7/24 (2006.01) C08F 4/40 (2006.01) C08G 59/20 (2006.01) C08L 101/06 (2006.01) C09D 5/03 (2006.01) C09D 133/06 (2006.01) C09D 133/14 (2006.01) C09D 157/10 (2006.01) C09D 163/00 (2006.01) C09D 201/06 (2006.01) C09D 201/08 (2006.01)

Patent

CA 2340922

A thermosetting composition comprising a co-reactable solid, particulate mixture of (a) polycarboxylic acid functional polymer, and (b) epoxy functional polymer, is described. The polycarboxylic acid functional polymer and epoxy functional polymer are each prepared by atom transfer radical polymerization and have well defined polymer chain architecture and polydispersity index of less than 2.5. The thermosetting compositions of the present invention have utility as powder coatings compositions.

La présente invention concerne une composition thermodurcissable comprenant un solide co-réagissant qui est un mélange particulaire (a) d'un polymère fonctionnel polycarboxylique, et (b) d'un polymère époxy fonctionnel. Le polymère fonctionnel polycarboxylique et le polymère fonctionnel époxy sont chacun préparés par polymérisation radicalaire à transfert d'atome et présentent une chaîne polymérique d'architecture bien définie et un indice de polydispersité inférieur à 2,5. Les compositions thermodurcissables de la présente invention sont utilisées comme poudres de revêtement.

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