Liquid crystal monomeric compound and liquid crystal polymer compound modified therewith
申请人:Showa Shell Sekiyu Kabushiki Kaisha
公开号:EP0571276A1
公开(公告)日:1993-11-24
The present invention is to provide a liquid crystal monomeric compound where a liquid crystal phase readily appears, which is excellent in alignment control, film-formability, durability, heat-stability and compatibility, and is able to be applied to electro-optical liquid crystal elements and recording elements; and a side-chain liquid crystal polymer compound modified with such a monomeric compound.
The liquid crystal monomeric compound is represented by the following formula:
CH₂=CH-(CH₂)m-R [1]
wherein m is an integer of 2 to 20 and R is a group selected from the group consisting of
wherein p is 1 or 2, Rf is CF₃ or C₂F₅, R¹ is an alkyl group having 3 - 18 carbon atoms, * means an optically active carbon atom, (A) and (B) each is a group independently selected from the group consisting of
which may be substituted with one or more halogen atoms, and X is -O-, -COO- or a direct linkage, and
wherein p, Rf, R¹, (A), (B), X and * have the same meanings as above.
本发明旨在提供一种容易出现液晶相的液晶单体化合物,它在对准控制、成膜性、耐久性、热稳定性和兼容性方面都非常出色,能够应用于电子光学液晶元件和记录元件;以及一种用这种单体化合物改性的侧链液晶聚合物化合物。
液晶单体化合物用下式表示:
CH₂=CH-(CH₂)m-R [1].
其中 m 是 2 至 20 的整数,R 是选自以下组成的基团
其中 p 是 1 或 2,Rf 是 CF₃ 或 C₂F₅,R¹ 是具有 3 - 18 个碳原子的烷基,* 指光学活性碳原子,(A)和(B)各自是独立选自以下组的基团
可被一个或多个卤素原子取代,X 为-O-、-COO- 或直接连接,以及
其中 p、Rf、R¹、(A)、(B)、X 和 * 的含义同上。