Liquid crystalline carbonic acid ester and liquid crystal compos

Details Liquid crystalline carbonic acid ester and liquid crystal compos Liquid crystalline carbonic acid ester and liquid crystal compos

1986-10-28

1988-07-26

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229964, 25229965, 25229966, 25229901, 2522995, 350350R, 350350S, 558271, 558273, G02F 113, C09K 1920, C09K 1912, C09K 1952, C07C 4020

Patent

active

047598697

ABSTRACT:
A ferroelectric liquid crystal compound having superior properties and a chiral smectic liquid crystal composition are provided. The ferroelectric liquid crystal compound is expressed by the formula ##STR1## wherein R represents an alkyl group of 2-18 C; A, --COO-- or --OCO--; l and m each, 1 or 2 but l+m=2 or 3; n, an integer of 2-8; and symbol *, an asymmetric carbon atom.

REFERENCES:
patent: 4065489 (1977-12-01), Steinstrasser et al.
patent: 4576732 (1986-03-01), Isogai et al.
patent: 4589996 (1986-05-01), Inoue 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: 4643842 (1987-02-01), Taguchi et al.
patent: 4647398 (1987-03-01), Saito et al.
Gray, G. W., et al., Liquid Crystals & Plastic Crystals, vol. 1, pp. 142-143, John Wiley & Sons, Inc., New York, (1974).

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