Dichroic azo dye, liquid crystal composition containing the same

Details Dichroic azo dye, liquid crystal composition containing the same Dichroic azo dye, liquid crystal composition containing the same

1994-11-04

1996-07-16

Powers, Fiona T.

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

Organic compounds

Azo

25229901, 25229965, 25229966, 359103, 534689, 534755, 534760, 534796, 534805, 534808, 534813, 534825, C09K 334, G02F 113

Patent

active

055368182

ABSTRACT:
A dichroic dye represented by the formula (I) or (II): ##STR1## wherein the substituents are as described in the specification. The dichroic dyes (I) and (II) exhibit excellent dichroism and can be prepared from 2,2'-ditrifluoromethylbenzidine having no toxicity, such as mutagenicity.

REFERENCES:
patent: 4519935 (1985-05-01), Claussen
patent: 4600527 (1986-07-01), Imazeki et al.
patent: 4610803 (1986-09-01), Claussen
patent: 4770809 (1988-09-01), Heidenreich et al.

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