Aqueous two-part isocyanate-free curable, polyurethane resin sys

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

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525131, 525127, 525300, C08J 300, C08F 830, C08L 7500

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active

055677614

ABSTRACT:
Aqueous-borne coating compositions containing:
(A) an acetoacetylated polymer; and
(B) a polyacrylate having at least two (meth)acrylate end groups,
have long pot lives and may be cured by the evaporation of water in the presence of a basic catalyst. Acrylic copolymers having pendent urethane side groups which are terminated with (meth)acrylate groups are water-dispersible and may be cured with polyfunctional crosslinking agents or by free radical initiators to afford coatings having excellent properties. Incorporation of a crosslinking component containing epoxy groups improves the coating properties.

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