TRANSFER MATERIAL, SURFACE-PROTECTIVE SHEET, AND PROCESS FOR PRODUCING MOLDED ARTICLE WITH THESE
申请人:NISSHA PRINTING CO., LTD.
公开号:EP1125764A1
公开(公告)日:2001-08-22
Disclosed is a transfer material comprising at least a substrate sheet having releasing property, and a protecting layer formed on one surface of the substrate sheet,
wherein the protecting layer is composed of an active energy ray curable resin, the active energy ray curable resin being obtained by heat-crosslinking a heat and active energy ray curable resin composition which comprises, as an active ingredient, a polymer having a (meth)acryl equivalent weight from 100 to 300 g/eq, a hydroxyl value from 20 to 500 and a weight-average molecular weight from 5000 to 50000; a polyfunctional isocyanate; and a UV absorber;
characterized in that the UV absorber is a bisbenzotriazole-type UV absorber represented by the formula:
wherein R each independently represents a hydrogen atom, or an alkyl group having 1 to 10 carbon atoms, n each independently represents an integer of 4 to 8, m each independently represents an integer of 1 to 20. A protection coating excellent in transparency, weather resistance, abrasive resistance, and chemical resistance may be formed on the surface of a molded article at low cost without forming cracks at the curved part, by using the transfer material of the present invention.
本发明公开了一种转印材料,它至少包括一个具有释放特性的基片和一个形成在基片一个表面上的保护层、
其中,保护层由活性能量射线可固化树脂构成,活性能量射线可固化树脂是通过热交联热和活性能量射线可固化树脂组合物获得的,该组合物作为活性成分包括:(甲基)丙烯酸当量重量为 100 至 300 克/当量、羟基值为 20 至 500 和重量平均分子量为 5000 至 50000 的聚合物;多官能度异氰酸酯;以及紫外线吸收剂;
其特征在于,紫外线吸收剂是由式表示的双苯并三唑型紫外线吸收剂:
其中R各自独立地代表氢原子或具有1至10个碳原子的烷基,n各自独立地代表4至8的整数,m各自独立地代表1至20的整数。通过使用本发明的转移材料,可在模制件表面形成透明度、耐候性、耐磨性和耐化学性极佳的保护涂层,而且成本低廉,不会在弯曲部分形成裂缝。