Solvent-soluble polyimide and production thereof

Details Solvent-soluble polyimide and production thereof Solvent-soluble polyimide and production thereof

1989-02-14

1990-09-04

Kight, III, John

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

Synthetic resins

From carboxylic acid or derivative thereof

528125, 528126, 528128, 528172, 528185, 528188, 528189, 528208, 528220, 528229, 528352, C08G 6912, C08G 6926, C08G 7500, C08G 7902

Patent

active

049546120

ABSTRACT:
A solvent-soluble polyimide obtained from an exo-form dicarboxylic acid anhydride with an aromatic diamine, e.g. 2,2,-bis[4-(4-aminophenoxy)phenyl]propane is improved in film-forming properties and transparency, and particularly suitable for producing an orientation controlling film in a liquid crystal display device.

REFERENCES:
patent: 4588804 (1986-05-01), Fryd
patent: 4696994 (1987-09-01), Nakajima et al.

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