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.
Diamine compounds, which in particular are useful as precursors for the production of liquid crystal alignment layers, represented by general formula (I), wherein A1 represents an organic group of 1 to 40 carbon atoms; A2 represents a hydrogen atom or an organic group of 1 to 40 carbon atoms.