申请人:Wako Pure Chemical Industries, Ltd.
公开号:EP2803672A1
公开(公告)日:2014-11-19
A problem of the present invention is to provide a liquid crystal aligning agent which never deteriorates even in a method where UV is irradiated such as a liquid crystal dropping method or the like, and is capable of forming a liquid crystal alignment film having high UV resistance.
The present invention relates to,
(I) Compound represented by the following general formula [1]
(wherein n represents an integer of 1 to 6; and R represents an alkyl group having 8 to 20 carbon atoms or a group having a steroid skeleton),
(II) Polyamic acid or a polyimide obtained by a reaction of
(A) compound represented by the above general formula [1], and the following compounds (B) and (C),
(B) compound represented by the following general formula [2],
(wherein R1 represents an alkyl group having 1 to 6 carbon atoms, or an arylalkyl group having 7 to 12 carbon atoms, p represents an integer of 0 to 4, and Y represents an amino group or a 4-aminophenyl group),
(C) compound represented by the following general formula [3] or [4],
(wherein Z represents a tetravalent hydrocarbon group), along with
(III) Liquid crystal aligning agent comprising the polyamic acid or the polyimide obtained by a reaction of the above compounds (A), (B) and (C).
本发明的一个问题是提供一种液晶配向剂,即使在液晶滴落法等紫外线照射方法中也不会变质,并且能够形成具有高抗紫外线能力的液晶配向膜。
本发明涉及
(I) 由以下通式[1]表示的化合物
(其中 n 代表 1 至 6 的整数;R 代表具有 8 至 20 个碳原子的烷基或具有类固醇骨架的基团)、
(II) 由下列物质反应得到的聚酰胺或聚酰亚胺
(A) 上述通式[1]所代表的化合物和下列化合物(B)和(C)、
(B) 以下通式[2]代表的化合物、
(其中 R1 代表具有 1 至 6 个碳原子的烷基,或具有 7 至 12 个碳原子的芳烷基,p 代表 0 至 4 的整数,Y 代表氨基或 4-氨基苯基)、
(C) 由以下通式[3]或[4]代表的化合物、
(其中 Z 代表四价烃基),以及
(III) 液晶对准剂,包括由上述化合物(A)、(B)和(C)反应得到的聚酰胺或聚酰亚胺。