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    • 3. 发明授权
    • Optically active monomer, liquid crystal polymer, and optical element
    • 光学活性单体,液晶聚合物和光学元件
    • US06248259B1
    • 2001-06-19
    • US09402539
    • 1999-10-06
    • Kyoko IzumiShusaku NakanoAmane Mochizuki
    • Kyoko IzumiShusaku NakanoAmane Mochizuki
    • C09K1934
    • C07D493/04C08F20/26C08F20/30C09K19/3861C09K2019/3408G02B5/3016
    • To obtain a monomer having a large torsion force, to obtain a liquid crystal polymer which is excellent in a film-forming property, can easily control a helical pitch of a cholesteric phase, can form a grandjean orientation in a good monodomain state by an orientation treatment in a short time such as few minutes, and can stably fix it in a glass state, and to obtain an optical element having a circular dichroism, represented by the following formula (a), comprising a solidified product of the liquid crystal polymer, which is thin and light, is hard to change the oriented state such as pitch, etc., at a practical temperature, and has excellent durability and storage stability. An optically active monomer represented by (wherein R1 represents a hydrogen atom or a methyl group, and A and B represent an organic group); a side chain type liquid crystal polymer having a structural unit comprising the optically active monomer; and an optical element showing a circular dichroism having a solidified layer of a grandjean oriented cholesteric liquid crystal phase comprising the liquid crystal polymer.
    • 为了获得具有大扭矩的单体,为了获得成膜性优异的液晶聚合物,可以容易地控制胆甾型相的螺旋间距,可以通过取向形成具有良好单畴状态的超大方向 在几分钟内的短时间内进行处理,并且可以将其稳定地固定在玻璃状态,并且获得由下式(a)表示的具有圆二色性的光学元件,其包含液晶聚合物的固化产物, 在实用的温度下难以改变诸如沥青等的取向状态,并且具有优异的耐久性和储存稳定性。一种由(其中R 1表示氢原子或甲基)表示的光学活性单体 ,A和B表示有机基团); 具有包含光学活性单体的结构单元的侧链型液晶聚合物; 以及表示具有由液晶聚合物构成的具有盛大的取向胆固醇型液晶相的固化层的圆二色性的光学元件。