Decalins

Details Decalins Decalins

1981-12-09

1984-02-21

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229962, 25229963, 350350R, 260464, 260465C, 260465D, 260465F, 260465R, 560 1, 560 17, 560 56, 560116, 560139, 560141, 562466, 562469, 562492, 562499, C07C 43116, C07C 4930, C07C 6300, C07C 6976, C07C10322, C07C12164, C07C 1350, C07C 2502, C07C 1347, C09C 334, C09K 334

Patent

active

044328850

ABSTRACT:
Decalins of the formula ##STR1## wherein ring A is aromatic or a trans-1,4-disubstituted cyclohexane ring; R.sup.2 is methyl, --CH.sub.2 R', --OR', --CO--R', --CN, --COOH, --CO--OR', --CO--SR' or --O--CO--R'; R.sup.1 is hydrogen, methyl, --CH.sub.2 R, --OR or --CH.sub.2 OR, or when R.sup.2 is methyl, --CH.sub.2 R', --OR' or --CO--R', R.sup.1 also can be --CN, --COOH, --CO--OR, --CO--SR or --O--CO--R; R and R' each are alkyl; and R.sup.1 and R.sup.2 each have up to 12 carbon atoms and together have at most 14 carbon atoms,
their racemates and optically active antipodes, are described. Liquid crystalline mixtures comprising Compound I as well as their use in electro-optical devices also are disclosed.

REFERENCES:
patent: 3925237 (1975-12-01), Ross et al.
patent: 4119558 (1978-10-01), Coates et al.
patent: 4386007 (1983-05-01), Krause et al.
patent: 4391731 (1983-07-01), Boller et al.
"Substituted 2-Phenylnaphthalenes, a New Class of Nematic Liquid Crystals", Lauk et al., Helvetica Chimica Acta, vol. 64 (1981) #176.
Chemical Abstracts, vol. 80, 1974 #120620a.
Coates et al., Mol. Cryst. Liq. Cryst. 37, 249-262 (1976).
Coates et al., Mol. Cryst. Liq. Cryst. 41, 119-124 (1978).
Lauk et al., Helv. Chim. Acta. 64, 1847 (1981).
Gysin; E., Helvetica Chim. Acta 9, 59-67 (1926 and its Chem. Abst. 20:1402.
Chem. Abst. 95:1151356 (1981).

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