Diamino compounds and liquid crystal aligning films

Details Diamino compounds and liquid crystal aligning films Diamino compounds and liquid crystal aligning films

1994-10-25

1995-07-04

O'Sullivan, Peter

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

528125, 528126, 564322, 564430, 568721, C07C20535, C07C21714

Patent

active

054301955

ABSTRACT:
The present invention is to provide new diamino compounds useful for raw materials for production of liquid crystal aligning films that have excellent aligning properties and uniform and high pretilt angles over the whole display surface of wide substrates without afterimage phenomenons. The liquid crystal aligning films are constituted by a certain polyimide having as a principal constituent a structure unit represented by the formula; ##STR1##

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