Patent ID: 7122226

Claim:
A liquid crystal aligning agent, comprising: one polymer selected from the group consisting of a polyamic acid and an imidized polymer of the polyamic acid, and an organic solvent in which said one polymer is dissolved, wherein said polymer has both of the following structures (1) and (2): (1) it has at least one structure selected from the group consisting of structures represented by the following formulas (1) to (10); and (2) it has at least one structure selected from the group consisting of structures represented by the following formulas (a) to (z): wherein R a to R x are each independently a halogen atom or monovalent organic group, X is a monvalent organic group or oxygen atom, a, b, g, h, l, n, q, r, v and x are each independently an integer of 0 to 3, e, f, i, j, k, m, o, p, s, t, u and w are each independently an integer of 0 to 2, and c and d are each independently an integer of 0 to 4; wherein A is a phenylene group or single bond, X and Y are each independently a divalent group selected from the group consisting of —O—, —CO—, —COO—, —OCO—, —NHCO—, —CONH—, —S—, —Ar—Ar—CH 3 — (wherein Ar is a phenylene group), methylene group, alkylene group having 2 to 6 carbon atoms and phenylene group, wherein X and Y are each independently a divalent group selected from the group consisting of —O—, —CO—, —COO—, —OCO—, —NHCO—, —CONH—, —S—, —Ar—Ar—CH 2 — (wherein Ar is a phenylene group), methylene group, alkylene group having 2 to 6 carbon atoms and phenylene group, Z is a monovalent group selected from the group consisting of —CF 3 , —CN, —COCH 3 , —COOH, —NO 2 , —SOCH 3 , —SO 2 CH 3 , —F, —Cl and —OCF 3 , R 1 to R 9 , R 11 to R 19 , R 21 , R 23 , R 24 , R 25 and R 27 to R 33 are each independently a halogen atom or monovalent organic group, R 20 , R 22 R 26 are each independently a divalent organic group, R 10 is a tervalent organic group, and m and n are each an integer of 1 or more; and wherein said organic solvent is selected from the group consisting of γ-butyrolactam, N,N-dimethylformamide, N,N-dimethylacetamide, 4-hydroxy-4-methyl-2-pentanone, ethylene glycol monomethyl ether, butyl lactate, butyl acetate, methyl methoxy propionate, ethyl ethoxy propionate, ethylene glycol methyl ether, ethylene glycol ethyl ether, ethylene glycol-n-propyl ether, ethylene glycol-i-propyl ether, ethylene glycol-n-butyl ether, ethylene glycol dimethyl ether, ethylene glycol ethyl ether acetate, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monomethyl ether acetate, and diethylene glycol monoethyl ether acetate.