abstract |
An unsaturated polyester resinous composition comprising (a) unsaturated polyester, (b) a crosslinkable monomer, (c) at least one compound selected from the group consisting of 1,2,4-triazole and its derivatives, (d) a curing agent and (e) a manganese salt of organic acid as a curing accelerator is excellent in the adhesion to copper, the prevention of patina, air drying characteristics and stability of varnish. |