申请人:Dejima Tech bv
公开号:EP1767553A1
公开(公告)日:2007-03-28
The invention pertains to a UV-curable urethane-(meth)acrylate polymer wherein the polymer has grafted thereto on its (meth)acrylate moiety at least one liquid crystalline (LC) side chain to give a liquid crystalline polymer (LCP). Preferably the UV-curable urethane-(meth)acrylate polymer has the formula:
H2C=C(R)-CO-O-X-O-CO-NH-Y-NH-CO-O-X-O-CO-(R)C=CH2
wherein:
R is independently H or CH3;
X is independently a linker group containing at least one LC side chain;
Y is a linker group.
The invention further relates to an optical film comprising said UV-curable urethane-(meth)acrylate polymer and a display containing said optical film.
本发明涉及一种紫外线固化聚氨酯-(甲基)丙烯酸酯聚合物,其中该聚合物在其(甲基)丙烯酸酯分子上接枝了至少一条液晶 (LC) 侧链,从而形成液晶聚合物 (LCP)。紫外线固化型聚氨酯-(甲基)丙烯酸酯聚合物最好具有以下式子:
H2C=C(R)-CO-O-X-O-CO-NH-Y-NH-CO-O-X-O-CO-(R)C=CH2
其中
R 独立地是 H 或 CH3;
X 独立地是含有至少一条 LC 侧链的连接基团;
Y 是连接基团。
本发明还涉及一种包含所述紫外线固化聚氨酯-(甲基)丙烯酸酯聚合物的光学薄膜和一种包含所述光学薄膜的显示器。