Dichoric dye for color liquid crystals having halogen substitute

Details Dichoric dye for color liquid crystals having halogen substitute Dichoric dye for color liquid crystals having halogen substitute

1986-11-20

1988-10-25

Higel, Floyd D.

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

Organic compounds

Azo

534752, 2522991, 2522995, 25229961, 25229962, 350349, 546 29, C07D47122, C09B 35031, C09B 35037, C09K 334

Patent

active

047805315

ABSTRACT:
A dichroic dye for coloring liquid crystal compositions are disclosed which is represented by the following general formula: ##STR1## in which Dye 1 and Dye 2 each represents a group of atoms necessary to form a linear dye structure containing an azo, azomethine or ester group; X represents a halogen atom; and n represents an integer of from 1 to 10. The dye is suited for use in color liquid crystal display devices, e.g., of guest-host type.

REFERENCES:
patent: 4363473 (1982-12-01), Moeller et al.
patent: 4547309 (1985-10-01), Mochizuki et al.
patent: 4607097 (1986-08-01), Kano et al.

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