| abstract |
The object of the present invention is to provide a hardened film forming composition for forming a hardened film having excellent photoreaction efficiency, solvent resistance, high adhesion, and uniformity of alignment, and to provide an alignment material for optical alignment and use of the alignment material. Formed retardation material.nn n n The solution is a hardened film-forming composition containing (A) a compound having a photo-alignment group and a substituent selected from a hydroxyl group, a carboxyl group, and an amine group, and (B) a compound selected from a hydroxyl group, a carboxyl group, and an amine A hydrophilic polymer having one or two or more substituents, and (C) a monomer containing an N-hydroxymethyl compound or an N-alkoxymethyl (meth) acrylamide compound is polymerized It is a polymer and, if necessary, contains a crosslinking catalyst (D). A cured film is formed using this cured film-forming composition, and an alignment material is formed using a photo-alignment technique. A polymerizable liquid crystal is coated on the alignment material and hardened to obtain a retardation material. |