Color-clear composite coatings having improved hardness, acid et

Details Color-clear composite coatings having improved hardness, acid et Color-clear composite coatings having improved hardness, acid et

1995-05-01

1996-10-15

Beck, Shrive

Coating processes

Applying superposed diverse coating or coating a coated base

Synthetic resin coating

427408, 427410, 427412, 4274121, B05D 714

Patent

active

055652433

ABSTRACT:
A process for applying a color-plus-clear composite coating to a substrate is provided. The process comprises applying to the substrate a pigmented or colored film-forming composition to form a base coat and applying to the base coat a transparent film-forming composition to form a clear coat over the base coat. The base coat comprises a resinous binder; a tricarbamoyl triazine compound having the formula C.sub.3 N.sub.3 (NHCOXR).sub.3, wherein X is nitrogen, oxygen, sulfur, phosphorus, or carbon, and R is a lower alkyl group having 1 to 12 carbon atoms, of mixtures of lower alkyl groups; and a pigment to act as the colorant. In a second embodiment of the invention, the base coat comprises a resinous binder, a capped polyisocyanate, and a pigment; and the clear coat comprises a polyepoxide and a polyacid crosslinking agent.

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