Aqueous dispersions for coating compositions

C - Chemistry – Metallurgy – 09 – D

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C09D 201/02 (2006.01) C08J 3/03 (2006.01) C09D 5/02 (2006.01)

Patent

CA 2431512

The invention provides curable coating compositions comprising an aqueous dispersion comprising a stabilizing resin (P1) and a compound (P2) comprising functional groups reactable with a crosslinking agent. Compound (P2) is dispersed into stabilizing resin (P1). The coating compositions of the invention may further comprise an optional crosslinking agent (P3) which may or may not be dispersed into stabilizing resin (P1). In a particularly preferred embodiment, both the stabilizing resin (P1) and compound (P2) will comprise functional groups which are carbamate or are convertible to carbamate.

L'invention concerne des compositions de revêtement durcissables comprenant une dispersion aqueuse contenant une résine de stabilisation (P1) et un composé (P2) contenant des groupes fonctionnels susceptibles de réagir à un agent de réticulation. Le composé (P2) est dispersé dans la résine de stabilisation (P1). Les compositions de revêtement de cette invention peuvent comprendre en outre un agent de réticulation facultatif (P3) qui peut être dispersé ou pas dans une résine de stabilisation (P1). Selon un mode de réalisation particulièrement préféré, tant la résine de stabilisation (P1) que le composé (P2) comprennent des groupes fonctionnels qui sont un carbamate ou peuvent être transformés en carbamate.

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