Anthraquinone dyestuffs, processes for their preparation, their

Details Anthraquinone dyestuffs, processes for their preparation, their Anthraquinone dyestuffs, processes for their preparation, their

1981-11-25

1986-04-29

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing pleochroic dye

260371, 260372, 260373, 260374, 260377, 260378, 260380, 260381, 350349, 548146, 548156, 548160, 548194, 548187, 549472, 549480, C09K 334, C09B 120, C09B 154, C09B 158

Patent

active

045855749

ABSTRACT:
Anthraquinone dyestuffs of the formula ##STR1## in which R.sub.1 and R.sub.2 denote hydrogen, alkyl, cycloalkyl, aryl or aralkyl, and the said hydrocarbon radicals can be substituted, and

REFERENCES:
patent: 4358392 (1982-11-01), Cagnard et al.
patent: 4360447 (1982-11-01), Morimaka et al.
patent: 4363743 (1982-12-01), Moeller et al.
patent: 4376715 (1983-03-01), Cognard et al.
patent: 4402854 (1983-09-01), Moeller et al.
patent: 4428858 (1984-01-01), Cognard et al.
patent: 4491532 (1985-01-01), Scherowsky et al.
patent: 4495083 (1985-01-01), Imazeki et al.
patent: 4505549 (1985-03-01), Shimiozu et al.
Cognard, J., et al., Mol. Cryst. Liq. Cryst., vol. 70, pp. 1-19 (1981).
Abstracts of the Eighth International Liq. Cryst. Conf., I-23 & I-24, Distributed in Kyoto, Japan, Jun. 30-Jul. 4, 1980.

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