C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 57/00 (2006.01) B05D 7/26 (2006.01) C09D 133/02 (2006.01) C09D 133/06 (2006.01)
Patent
CA 2340220
A thermosetting composition comprising a co-reactable solid, particulate mixture of (a) beta-hydroxyalkylamide cross-linking agent, e.g., bis(N,N-di-2-hydroxyethyl)adipamide, and (b) polycarboxylic acid functional polymer, is described. The polycarboxylic acid functional polymer is prepared by atom transfer radical polymerization and has 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, mélange particulaire (a) d'un agent de réticulation bêta-hydroxyalkylamide, par exemple, un bis(N,N-di-2-hydroxyethyl) adipamide, et (b) d'un polymère fonctionnel polycarboxylique. Le polymère fonctionnel polycarboxylique est préparé par polymérisation radicalaire à transfert d'atome et présente 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.
Barkac Karen A.
Coca Simion
Franks James R.
Humbert Kurt A.
Lamers Paul H.
Borden Ladner Gervais Llp
Ppg Industries Ohio Inc.
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