Agent for vertical orientation treatment

Details Agent for vertical orientation treatment Agent for vertical orientation treatment

1993-06-15

1995-05-30

Acquah, Samuel A.

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

Synthetic resins

From carboxylic acid or derivative thereof

528170, 528171, 528172, 528173, 528185, 528188, 528220, 528229, 528350, 428 1, 4284735, C08G 7310

Patent

active

054202337

ABSTRACT:
An agent for vertical orientation treatment consisting essentially of a polyimide which contains a linear alkyl group having at least 12 carbon atoms in an amount of at least 5% by weight of the alkyl group to the total weight of the polyimide, and which, when a coating film of the polyimide is formed on a substrate, has a surface energy of not more than 38 dyn/cm.

REFERENCES:
patent: 4686147 (1987-08-01), Matsuyama et al.
patent: 4749777 (1988-06-01), Kohtoh et al.
patent: 5046822 (1991-09-01), Matsuda et al.
patent: 5053480 (1991-10-01), Koto et al.
patent: 5064697 (1991-11-01), Takiguchi et al.
patent: 5144078 (1992-09-01), Nagase 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.

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