Liquid crystal aligning agent, liquid crystal aligning film and liquid crystal device

Abstract

A liquid crystal alignment agent is provided, which can obtain a liquid crystal alignment film with good adhesion to sealing materials and good resistance to impurities, thereby exhibiting excellent coatability. The liquid crystal alignment agent contains a polymer (P), said polymer (P) being at least one selected from the group consisting of polyorganosiloxanes and addition polymers, the polymer (P) having a specific structure (a-1) and a specific structure (a-2), or having a specific structure (b), or having a specific structure (a-1), a specific structure (a-2), and a specific structure (b). Specific structure (a-1): a substituted or unsubstituted nitrogen-containing aromatic heterocycle; specific structure (a-2): at least one selected from the group consisting of protected amino groups, protected amide groups, and protected urea groups (wherein, excluding functional groups in which the nitrogen atom of the protected amino group, protected amide group, or protected urea group constitutes part of an aromatic heterocycle); specific structure (b): a partial structure represented by formula (0).

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