申请人:Nippon Mitsubishi Oil Corporation
公开号:EP0982621A2
公开(公告)日:2000-03-01
A film for optical elements is formed by a liquid crystalline composition comprising the following components (a) and (b):
(a) a liquid crystalline polymer which exhibits an optically positive uniaxial property; and
(b) a polycyclic compound having a molecular weight of not more than 1,000 and wherein a plurality of alicyclic rings and/or aromatic rings are connected together through a linkage chain of 0 to 4 main-chain carbon atoms bonded to different ring carbon atoms, with hydrocarbon groups each having 1 to 20 carbon atoms being bonded respectively to both end rings through a linkage chain of 0 to 4 main-chain carbon atoms,
an orientation form formed in the state of liquid crystal of said liquid crystalline composition being fixed.
用于光学元件的薄膜由液晶组合物形成,液晶组合物包括以下成分 (a) 和 (b):
(a) 具有光学正单轴性的液晶聚合物;和
(b) 多环化合物,其分子量不超过 1,000,其中多个脂环和/或芳香环通过 0 至 4 个主链碳原子的连接链连接在一起,这些主链碳原子与不同的环碳原子键合,而每个具有 1 至 20 个碳原子的烃基通过 0 至 4 个主链碳原子的连接链分别与两个端环键合、
所述液晶组合物在液晶状态下形成的取向形式是固定的。