Wet-in-wet coating process

摘要

A coating process is claimed, comprising (a) coating a substrate with a base coat compsn. (A) contg. an OH gp.-contg. oligomer (I) and an amino resin (II), (b) coating wet-in-wet with a clear coat compsn. (B) with a hardener system different from that in (A), and (c) hardening the coatings; base coat (A) also contains a hardening catalyst (III) for compsn. (B), with a b.pt. of 150 deg C or more at 760 mmHg. Also claimed is base coat compsn. (A) contg. (I), (II) and (III).