Aqueous coating composition

Details Aqueous coating composition Aqueous coating composition

C - Chemistry, Metallurgy

09

D

C09D 151/08 (2006.01)

Patent

CA 2124235

An aqueous dispersed, low VOC coating containing a polymeric binder comprises an addition copolymer grafted epoxy-polyester terpolymer. The graft terpolymer comprises by weight between 1% and 70% unsaturated polyester, 5% and 80% epoxy resin, and 5% and 70% addition copolymer, where the terpolymer has an Acid Number above about 30 and is dispersed into water with a volatile base.

Un revêtement sous forme de dispersion aqueuse à faible teneur en COV et contenant un liant polymérique renferme un terpolymère greffé d'époxy-polyester et de copolymère d'addition. Le terpolymère greffé renferme en poids entre 1 % et 70 % d'un polyester insaturé, entre 5 % et 80 % de résine époxyde, et entre 5 % et 70 % d'un copolymère d'addition; le terpolymère a un indice d'acide supérieur à 30 environ, et il est dispersé dans l'eau avec une base volatile.

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