Biphenyl carbonic acid ester compounds and liquid crystal compos

Details Biphenyl carbonic acid ester compounds and liquid crystal compos Biphenyl carbonic acid ester compounds and liquid crystal compos

1986-06-26

1988-03-22

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

2522995, 25229901, 350350R, 350350S, 558265, 558268, 558270, 558273, G02F 113, C07C 6996, C09K 1912

Patent

active

047326999

ABSTRACT:
A liquid crystal compound represented by the following general formula (1), which possess a large spontaneous polarization about room temperature and a liquid crystal composition containing a liquid crystal compound represented by the following general formula (1) ##STR1## wherein R.sup.1 represents C.sub.6-14 alkyl group, R.sup.2 represents straight or branched alkyl group with or without optically active carbon, X represents a group selected from --OCOO--, --O--, --COO--, --OCO-- or single bond, Y represents a group selected from --COOCH.sub.2 --, --OCO-- or --OCOO--, in which either X or Y is at least --OCOO-- group, m represents 0 or 1, Z represents a chlorine or bromine, a carbon atom marked with * represents optically active carbon atom.

REFERENCES:
patent: 4576732 (1986-03-01), Isogai et al.
patent: 4589996 (1986-05-01), Inoue et al.
patent: 4592858 (1986-06-01), Higuchi et al.
patent: 4596667 (1986-06-01), Inukai et al.
patent: 4613209 (1986-09-01), Goodby et al.
patent: 4614609 (1986-09-01), Inoue et al.
patent: 4615586 (1986-10-01), Geary et al.
patent: 4695651 (1987-09-01), Higuchi et al.
Goodby, J. W., et al, Liquid Crystals & Ordered Fluids, vol. 4, Plenum Press, N.Y., pp. 1-32 (1984).

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