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    • 40. 发明申请
    • COPOLYMER HAVING LIQUID CRYSTAL GROUP IN THE SIDE CHAIN
    • 具有侧链中的液晶组合物的共聚物
    • WO1994024180A1
    • 1994-10-27
    • PCT/JP1994000539
    • 1994-03-31
    • SAGAMI CHEMICAL RESEARCH CENTERNAGASE, YuAKIYAMA, EiichiTAKAMURA, Yuriko
    • SAGAMI CHEMICAL RESEARCH CENTER
    • C08F299/08
    • C08F230/08C09K19/408
    • A copolymer having a polyacrylate skeleton as the main chain and a liquid crystal group in the side chain, which copolymer has a number-average molecular weight of 1,000 or above and is composed of repeating acrylate units (I) each having a liquid crystal group bonded thereto by means of an ester linkage via an alkylene chain and repeating acrylate units (II) each having a liquid crystal group bonded thereto by means of an ester linkage via an alkylene chain having a siloxane linkage in a molar ratio of the units (I) to the units (II) of 95/5 to 20/80. This copolymer is a side-chain type of polymer liquid crystal which exhibits liquid crystallinity at a comparatively low temperature, i.e., around room temperature, and is useful as the material of large-area display elements that are driven at low temperature, optical shutters, light-modulating glass, and so forth.
    • 以聚丙烯酸酯骨架为主链和侧链中的液晶基团的共聚物,该共聚物的数均分子量为1000以上,由具有液晶基团的重复丙烯酸酯单元(I)组成的共聚物 通过亚烷基链的酯键和具有通过酯键键合的液晶基团的丙烯酸酯单元(II)通过具有硅氧烷键的亚烷基链以单位(I)的摩尔比重复, 到95/5至20/80的单位(II)。 该共聚物是侧链型聚合物液晶,其在比较低的温度即室温附近呈现液晶性,并且可用作在低温下驱动的大面积显示元件的材料,光学快门, 光调制玻璃等。