Agent for alignment treatment for a liquid crystal cell

Details Agent for alignment treatment for a liquid crystal cell Agent for alignment treatment for a liquid crystal cell

1993-09-03

1995-06-06

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528336, 528351, 528353, 428 1, 4284735, C08G 7310

Patent

active

054224195

ABSTRACT:
An agent for alignment treatment for a liquid crystal cell, which comprises an organic solvent-soluble polyimide obtained by reacting and polymerizing a tetracarboxylic acid component with a diamine component and a dicarboxylic acid component containing a long chain alkyl group and/or a monoamine component containing a long chain alkyl group, followed by imide-formation.

REFERENCES:
patent: Re33342 (1988-06-01), Kohtoh et al.
patent: 3763114 (1973-10-01), Saluti
patent: 4042571 (1977-08-01), Kawase et al.
patent: 4929658 (1990-05-01), Kohtoh et al.
patent: 5059677 (1991-10-01), Kohtoh et al.
patent: 5070182 (1991-12-01), Kohtoh et al.
patent: 5111318 (1992-05-01), Kohtoh et al.
Molecular Crystals and Liquid Crystals, vol. 163, Oct. 1988, H. Fukuro, et al., "Newly Synthesized Polyimide for Aligning Nematic Liquid Crystals Accompanying High Pretilt Angles", pp. 157-162.
Database WPI, Derwent Publications Ltd., AN 91-012548, JP-A-2 287 324, Nov. 27, 1990.

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