DIAMINE, POLYMER, LIQUID CRYSTAL ALIGNING AGENT, LIQUID CRYSTAL ALIGNMENT FILM, AND LIQUID CRYSTAL DISPLAY ELEMENT

摘要

A diamine characterized by being represented by formula (1) (wherein X1 represents a single bond or an alkylene group having 1 to 6 carbon atoms (wherein non-adjacent -CH2- groups in the alkylene group may be independently substituted by an ether bond, an ester bond or an amide bond); X2 represents -OCO-CH=CH- or -CH=CH-COO-; X3 represents a single bond, an alkylene group having 1 to 10 carbon atoms or a bivalent benzene ring; X4 represents a single bond, -OCO-CH=CH- or -CH=CH-COO-; and X5 represents a single bond or an alkylene group having 1 to 6 carbon atoms (wherein non-adjacent -CH2- groups in the alkylene group may be independently substituted by an ether bond, an ester bond or an amide bond); wherein at least one cinnamoyl group is contained in formula (1)).