A substrate excellent in weatherability and adhesion to a coating applied thereon is provided. The substrate contains (a) 100 parts by mass of a polyolefin resin, (b) 0.01 to 0.5 parts by mass of an aromatic phosphoric ester metal salt having general formula (1), and (c) 0.02 to 0.5 parts by mass of a hindered amine compound, preferably a compound having general formula (2), and optionally preferably (d) 0.02 to 0.5 parts by mass of a benzoate light stabilizer having general formula (4). The structures of general formulae (1), (2), and (4) are as defined in the description.
本发明提供了一种耐候性和涂层附着力极佳的基材。该基材含有:(a) 100 重量份的聚烯烃
树脂;(b) 0.01 至 0.5 重量份的具有通式(1)的芳香族
磷酸酯
金属盐;(c) 0.02 至 0.5 重量份的受阻胺化合物,最好是具有通式(2)的化合物;(d) 0.02 至 0.5 重量份的具有通式(4)的
苯甲酸酯
光稳定剂。通式(1)、(2)和(4)的结构如说明中所定义。