Liquid crystal-aligning agent

Details Liquid crystal-aligning agent Liquid crystal-aligning agent

1995-12-07

1997-12-16

Kelly, C. H.

Compositions

Liquid crystal compositions

Containing nonchiral aligning agents

25229901, 5283291, 528353, C09K 1956, C09K 1952, C08G 6936

Patent

active

056981350

ABSTRACT:
A liquid crystal-aligning agent comprising at least one of a polyamic acid obtained by reacting (A) a tetracarboxylic acid dianhydride consisting of 70 to 98 mole % of a dianhydride of a tetracarboxylic acid such as ##STR1## or the like, and 2 to 30 mole % of a dianhydride of a cyclobutanetetracarboxylic acid, and (B) a diamine compound, and a polymer obtained by imidizing the polyamic acid.

REFERENCES:
patent: 4366304 (1982-12-01), Nimry et al.
patent: 4454310 (1984-06-01), Oka et al.
patent: 4879059 (1989-11-01), Hanyu et al.
patent: 5129727 (1992-07-01), Hanyu et al.
patent: 5135678 (1992-08-01), Murata et al.
patent: 5276132 (1994-01-01), Nishikawa et al.
patent: 5478682 (1995-12-01), Nishikawa et al.
patent: 5478913 (1995-12-01), Boyce et al.

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