Patent ID: 7419723

Claim:
A base coating composition for decorated moldings containing silver plating layer comprising a main composition for base coating comprising an acrylic polyol (A1), at least one selected from the group consisting of a polyester-modified acrylic group-containing polydimethylsiloxane and a poly-ether modified polydimethylsiloxane (A2) and an epoxysilane (A3) represented by the chemical scheme (1): in the scheme, R 1 represents a methyl, methoxy or ethoxy group and R 2 and R 3 are the same or different and each represents a methoxy or ethoxy group, in the main composition for base coating, the (A2)/(A1) ratio being 0.02/100 to 0.20/100 on the solid weight basis and the (A3)/(A1) ratio being 1.5/100 to 5.5/100 on the solid weight basis, and a curing agent for base coating comprising a polyisocyanate, wherein the base coating composition for decorated moldings is a two-package curing urethane coating composition, and the equivalent ratio between the NCO groups in the curing agent for base coating and the OH groups in the acrylic polyol (A1), namely the NCO/OH equivalent ratio, is 1.5 to 3.0.