Dichroic dyestuffs for liquid crystal and liquid crystal composi

Details Dichroic dyestuffs for liquid crystal and liquid crystal composi Dichroic dyestuffs for liquid crystal and liquid crystal composi

1985-12-02

1987-06-30

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing pleochroic dye

534577, 534829, 534832, 350349, C09K 1910, C09K 1912, G02F 113

Patent

active

046769234

ABSTRACT:
New dichroic dyestuffs for the guest-host type liquid crystal and new liquid crystal compositions containing said dyestuff having an excellent improved dichroism and being prepared by introducing at least one group selected from the group consisting of phenyl, cyclohexyl, phenylcarbonyloxy and phenyloxycarbonyl group into a phenyl, a cyclohexyl or a naphthyl group at its 4-position, which is arranged at the end of a known dichroic dyestuff molecule along the major axis of the molecule.

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Demus, D. et al., Flussige Kristalle in Tabellen, veb Deutscher Verlag fur Grundstoffindustrie, Leipzig, 1974, pp. 152, 156-159 & 219.
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