Diamine compounds, which in particular are useful as precursors for the production of liquid crystal alignment layers, are represented by the general formula I:
wherein
A
1
represents an organic group of 1 to 40 carbon atoms;
A
2
represents a hydrogen atom or an organic group of 1 to 40 carbon atoms.
二胺化合物,特别是作为
液晶取向层的前体物而有用的二胺化合物,由一般式I所代表:其中A1代表1至40个
碳原子的有机基团;A2代表
氢原子或1至40个
碳原子的有机基团。