申请人:Asahi Glass Company Limited
公开号:EP2243801A1
公开(公告)日:2010-10-27
To provide a resin substrate provided with a coating layer having excellent weather resistance and thereby capable of maintaining properties of the resin such as transparency and fracture resistance over a long period of time.
A resin substrate provided with a coating layer, which comprises a substrate made of a resin containing an aromatic ring and a coating layer containing an acrylic polymer having an acid value of at most 1 mg KOH/g, a glass transition point of from 60°C to 150°C and a mass average molecular weight of from 90,000 to 1,000,000, and an ultraviolet light absorbing component selected from a polymer having ultraviolet light absorbing groups and an ultraviolet light absorber, having an average of absorption coefficients of from 3.5 g/(mg·cm) to 100 g/(mg·cm) to light in a wavelength region of from 350 nm to 380 nm, formed on at least one surface of the substrate.
提供一种带有涂层的树脂基材,涂层具有优异的耐候性,从而能够长期保持树脂的特性,如透明度和抗断裂性。
一种带有涂层的树脂基材,它包括由含有芳香环的树脂制成的基材和含有丙烯酸聚合物的涂层,丙烯酸聚合物的酸值最多为 1 mg KOH/g,玻璃化转变点为 60°C 至 150°C,质量平均分子量为 90,000 至 1,000,000 ;紫外线吸收组分,选自具有紫外线吸收基团的聚合物和紫外线吸收剂,其平均吸收系数为 3.5 g/(mg-cm) 至 100 g/(mg-cm) 波长范围为 350 nm 至 380 nm 的光的平均吸收系数。