Process for coating employing a two-pack type aqueous paint composition

摘要

An improvement in a process for coating a surface with a aqueous paint composition containing as the primary film-forming components: a synthetic polycarboxylic acid resin as the main binder component; an amino resin as a heat curing cross-linking agent for the polycarboxylic acid resin and a neutralizing agent for neutralizing the acid groups of the polycarboxylic acid resin, is provided. The improvement is applying the aqueous paint composition to the surface as two compositions (A) comprising a synthetic polycarboxylic acid resin having a neutralization degree of 30 to 70% and an amino resin; and (B) comprising a synthetic polycarboxylic acid resin having a neutralication degree 30 to 80% higher than that of the polycarboxylic acid resin of (A) and an amino resin, or (C) a neutralizing agent comprising ammonia or an organic amine.