Diamine and polyamic acid derived therefrom for liquid crystal orientation applications
申请人:Yan Chuan-Ter
公开号:US20080281112A1
公开(公告)日:2008-11-13
A diamine includes a structure of formula (I),
wherein X and Y are independently a divalence group selected from the group consisting of: —O—, —(C═O)—O—, —O—(C═O)—, —(C═O)—NH—, and —NH—(C═O)—; and R has a structure of formula (II):
wherein R
1
, R
2
, R
3
, R
4
, R
5
, m, and n are as defined in Claim 1. A polyamic acid is prepared by reacting a diamine reactant including the aforesaid diamine of formula (I) with a tetracarboxylic dianhydride reactant. A liquid crystal orienting film contains a polyimide converted from the aforesaid polyamic acid.
一种二胺包括如下结构的化学式(I),其中X和Y分别是从以下组中选择的二价基团:—O—,—(C═O)—O—,—O—(C═O)—,—(C═O)—NH—和—NH—(C═O)—;R具有如下结构的化学式(II):其中R1、R2、R3、R4、R5、m和n的定义如权利要求1所述。通过将包括上述化学式(I)的二胺与四羧酐二酐反应制备聚酰胺酸。一种液晶取向膜包含从上述聚酰胺酸转化而来的聚酰亚胺。