Waterborne, ambient temperature curable film-forming composition

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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524591, 524839, 524840, 525123, 525455, C08J 300, C08K 320, C08L 7500, C08F 830, C08F28304

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active

060050454

ABSTRACT:
A homogeneous oil-in-water emulsion suitable for use as a curable film-forming composition is provided. The emulsion is a mixture of hydrophobic polyisocyanate crosslinking agent containing at least one tertiary isocyanate group and a surface active isocyanate reactive material. The surface active isocyanate reactive material comprises an active hydrogen-containing acrylic copolymer containing aromatic groups and having a glass transition temperature of at least about 0.degree. C. A multi-component composite coating composition is also provided by the present invention. The compositions are curable at ambient temperatures and are suitable for use in automotive applications.

REFERENCES:
patent: 5075370 (1991-12-01), Kubitza et al.
patent: 5466745 (1995-11-01), Fiori et al.
patent: 5545824 (1996-08-01), Stengel et al.
patent: 5646213 (1997-07-01), Guo
patent: 5686532 (1997-11-01), Bederke et al.
"Two-Component Water Reducible Polyurethane Coatings", Denise E. Fiori, Cytec Industries.

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