Patent ID: 6180181
Filing Date: 2001-01-30
Classification: B05D

Abstract:
A method for forming a composite coating comprising the steps of:(A) applying an aqueous primary coating composition to at least a portion of a surface of a substrate, the primary coating composition comprising:(1) at least one thermosettable dispersion comprising polymeric microparticles having functionality adapted to react with a crosslinking material, the microparticles comprising:(a) at least one acid functional reaction product of ethylenically unsaturated monomers; and(b) at least one hydrophobic polymer having a number average molecular weight of at least about 500 and an acid value of less than about 20; and(2) at least one crosslinking material, to form a substantially uncured primary coating thereon;(B) applying a secondary coating composition to at least a portion of the primary coating formed in step (A) without substantially curing the primary coating to form a substantially uncured secondary coating thereon; and(C) applying a clear coating composition to at least a portion of the secondary coating formed in step (B) without substantially curing the secondary coating to form a substantially uncured composite coating thereon.