ACRYLIC FILM FOR PUNCHING, SURFACE LIGHT SOURCE DEVICE, AND PROCESS FOR PRODUCTION OF OPTICAL MEMBER
申请人:Mitsubishi Rayon Co., Ltd.
公开号:EP2455417A1
公开(公告)日:2012-05-23
Provided is an acrylic film for punching excellent in transparency and free from breakage or whitening even if it is punched. The present invention is an acrylic film for punching containing a polymer (C) containing a di(meth)acrylate (A) unit represented by general formula (1) below and a mono(meth)acrylate (B) unit:
-CH2-CR1-COO-(X)n-COCR1-CH2- (1)
wherein (X) represents at least one repeat unit selected from C2H4O, C3H6O and C4H8O, the molecular weight of (X)n is 500 or more; and R1 represents H or CH3.
本发明提供了一种透明性极佳、即使冲孔也不会破损或发白的冲孔用丙烯酸薄膜。本发明是一种冲孔用丙烯酸薄膜,它含有一种聚合物(C),该聚合物含有如下通式(1)表示的二(甲基)丙烯酸酯(A)单元和单(甲基)丙烯酸酯(B)单元:
-CH2-CR1-COO-(X)n-COCR1-CH2- (1)
其中 (X) 代表至少一个选自 C2H4O、C3H6O 和 C4H8O 的重复单元,(X)n 的分子量为 500 或更多;R1 代表 H 或 CH3。