Novel liquid crystal mixtures

Details Novel liquid crystal mixtures Novel liquid crystal mixtures

1985-06-26

1986-11-11

Gron, Teddy S.

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

Organic compounds

Halogen containing

570129, 570130, 2522995, 585 20, 585 25, 2522996, 544315, 544316, 25229961, 544335, 544298, 25229963, 544242, 549373, 25229964, 549374, 549375, 25229965, 549369, 558416, 25229966, 558426, 558 17, 25229967, 350349, 350350S, 568329, 568331, 568334, 568420, 568425, 568642, 568647, 568631, 560 55, 560 72, 560 73, 560 65, 560102, 560104, 560106, 560107, 560108, 560109, 560118, 560126, 560128, 560 1, G02F 113, C09K 334

Patent

active

046219013

ABSTRACT:
Liquid crystalline mixtures containing compounds of the formula ##STR1## wherein n stands for the number 0 or 1; X.sup.1 and X.sup.2 denote single covalent bonds or one of the symbols X.sup.1 and X.sup.2 also denotes --COO--, --OOC-- or --CH.sub.2 CH.sub.2 --; the rings A.sup.1, A.sup.2, and A.sup.3 represent 1,4-phenylene, 2-fluoro-1,4-phenylene or trans-1,4-cyclohexylene or one of these rings also represents a 2,5-disubstituted pyrimidine ring or a trans-2,5-disubstituted m-dioxane ring; R.sup.1 signifies 4-alkenyl or on a cyclohexyl ring also 2Z-alkenyl; and R.sup.2 denotes alkyl, alkoxy, --CN or --NCS,
as well as the manufacture of these compounds and the use for electro-optical purposes are described.

REFERENCES:
patent: 3819531 (1974-06-01), Saeva et al.
patent: 3947375 (1976-03-01), Gray et al.
patent: 4211666 (1980-07-01), Inukai et al.
patent: 4358391 (1982-11-01), Finkelmann et al.
patent: 4363767 (1982-12-01), Demus et al.
patent: 4460770 (1984-07-01), Petrzilka et al.
patent: 4505837 (1985-03-01), Romer et al.
patent: 4528114 (1985-07-01), Petrzilka
patent: 4550981 (1985-11-01), Petrzilka et al.
patent: 4565425 (1986-01-01), Petrzilka et al.
Petrzilka, M., Mol. Cryst. Liq. Cryst., vol. 111, pp. 329-358 (Nov. 1984).
Dabrowski, R., et al., Mol. Cryst. Liq. Cryst., vol. 87, pp. 109-135 (1982).
Petrzilka M., Abstract of the 13th Frieburger Arbeitstagung Flussigkristalle, Freiburg, Germany (Mar. 23-25, 1983).

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