申请人:Mitsubishi Gas Chemical Company, Inc.
公开号:EP3085532A1
公开(公告)日:2016-10-26
It is an object of the present invention to provide a synthetic resin laminate, which is excellent in terms of shape stability in a high-temperature or high-humidity environment, surface hardness, heat resistance, coating adhesion and the like.
The aforementioned object can be achieved by a synthetic resin laminate, which is formed by laminating a resin layer (A) comprising 5% to 55% by mass of a (meth)acrylate copolymer (C) and 95% to 45% by mass of a polycarbonate (D) on one surface or both surfaces of a base material layer (B) comprising polycarbonate, wherein the synthetic resin laminate is characterized: in that the (meth)acrylate copolymer (C) comprises an aromatic (meth)acrylate unit (c1) and a methyl methacrylate unit (c2) at a mass ratio (cl/c2) of 5 to 80/20 to 95; in that the mass average molecular weight of the (meth)acrylate copolymer (C) is 5,000 to 30,000; and in that the viscosity average molecular weight of the polycarbonate (D) is 21,000 to 40,000.
本发明的目的是提供一种合成树脂层压板,该层压板在高温或高湿环境下具有优异的形状稳定性、表面硬度、耐热性、涂层附着力等。
合成树脂层压板可实现上述目标,该层压板是通过在由聚碳酸酯组成的基材层(B)的一个表面或两个表面上层压由 5%至 55%(质量分数)的(甲基)丙烯酸酯共聚物(C)和 95%至 45%(质量分数)的聚碳酸酯(D)组成的树脂层(A)而形成的,其中合成树脂层压板的特征在于:(甲基)丙烯酸酯共聚物(C)由芳香族(甲基)丙烯酸酯单元(c1)和甲基丙烯酸甲酯单元(c2)组成,其质量比(cl/c2)为 5 至 80/20 至 95;(甲基)丙烯酸酯共聚物(C)的质量平均分子量为 5,000 至 30,000 ;聚碳酸酯(D)的粘度平均分子量为 21,000 至 40,000 。