| abstract |
A liquid crystal aligning agent containing a polyamic acid obtained by reacting a diamine component containing a diamine compound represented by formula [1] with a tetracarboxylic dianhydride, and a polyamic acid obtained by dehydrating and ring-closing the polyamic acid. At least one polymer in imide. 【Chemical 1】 (In formula [1], X 1 is -O-, -NH-, -N(CH 3 )-, -CONH-, -NHCO-, -CH 2 O-, -COO-, -OCO-, -CON (CH 3 )- or -N(CH 3 )CO-, X 2 is a single bond, aliphatic hydrocarbon group, non-aromatic cyclic hydrocarbon group or aromatic hydrocarbon group with 1 to 20 carbons, X 3 is a single bond, -O -, -NH-, -N(CH 3 )-, -CONH-, -NHCO-, -COO-, -OCO-, -CON(CH 3 )-, -N(CH 3 )CO- or -O( CH 2 ) m -, wherein m is an integer of 1 to 5, X 4 represents an organic group with 1 to 20 carbons, and n is an integer of 1 to 4.) |