Cyclohexyl alkenoate compounds

Details Cyclohexyl alkenoate compounds Cyclohexyl alkenoate compounds

1993-10-20

1995-01-10

Wu, Shean

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229961, 25229967, 544298, 544335, 546339, 546342, 549369, 560220, C09K 1930, C09K 1934, C07C 69533, C07D21328

Patent

active

053804627

ABSTRACT:
Compounds having the Formula: ##STR1## wherein R.sup.1 denotes an alkenyl group;
A.sup.1 and A.sup.2 each independently represent 1,4-phenylene, which is unsubstituted or substituted with halogen and in which, when it is unsubstituted, optionally 1 or 2 CH group(s) is/are replaced by nitrogen, or trans-1,4-cyclohexylene or trans-1,3-dioxane-2,5-diyl;
Z.sup.1 and Z.sup.2 each independently signify a single covalent bond, --CH.sub.2 CH.sub.2 --, --COO--, --OOC--, --OCH.sub.2 --, --CH.sub.2 O--, --C.dbd.C--, --(CH.sub.2).sub.4 --, --O(CH.sub.2).sub.3 --, --(CH.sub.2).sub.3 O-- or the trans form of --OCH.sub.2 CH.dbd.CH--, --CH.dbd.CHCH.sub.2 O--, --(CH.sub.2).sub.2 CH.dbd.CH-- or --CH.dbd.CH(CH.sub.2).sub.2 --;
n is either 0, 1 or 2; and
R.sup.2 is halogen, cyano or alkyl with 1 to 12 carbon atoms, which is optionally substituted with fluorine and in which optionally 1 --CH.sub.2 -- group or 2 non-adjacent --CH.sub.2 -- groups is/are replaced by oxygen, --COO--, --OOC--, --CO-- and/or a --CH.sub.2 --CH.sub.2 -- group is replaced by --CH.dbd.CH--,
are useful in electro-optical applications. Liquid crystalline mixtures containing such compounds are especially suitable for use in commercial applications, such as electro-optic cells.

REFERENCES:
patent: 4631328 (1986-12-01), Ringsdorf et al.
patent: 5013477 (1991-05-01), Buchecker et al.
patent: 5174921 (1992-12-01), Buchecker et al.
patent: 5292452 (1994-03-01), Buchecker et al.
Derwent Abstract No. 83-777855/40.
Derwent Abstract No. 89-139075/19.
Derwent Abstract No. 91-347898/48.
Derwent Abstract No. 92-089941/12.
Derwent Abstract No. 93-189731/24.
Derwent Abstract No. 91-304404/42.

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