Pyrimidine compound and liquid crystal composition and liquid cr

Details Pyrimidine compound and liquid crystal composition and liquid cr Pyrimidine compound and liquid crystal composition and liquid cr

1996-06-21

1998-06-23

Kelly, C. H.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229962, 25229963, 568647, 568630, 568632, 568634, 560100, 546339, 546342, 544298, C09K 1934, C09K 1932, C07D 6976, C07D23902

Patent

active

057701083

ABSTRACT:
A novel pyrimidine compound represented by the following Formulas (1) and (2), a liquid crystal composition containing said compound and a liquid crystal element having excellent characteristics such as high speed response, orientation and high contrast ratio. ##STR1## wherein R.sub.1 and R.sub.2 each represent a linear or branched alkyl or alkenyl group, an alkoxyl or alkenyloxy group; R.sub.3 and R.sub.4 each represent a linear or branched alkyl group or alkenyl group; A.sub.1 and A.sub.2 each represent a substituted or unsubstituted 1,4-phenylene group, a pyridine-2,5-diyl or trans-1,4-cyclohexylene group; X.sub.1 and X.sub.2 each represent a single bond, --COO--, --OCO--, --OCH.sub.2 or --CH.sub.2 O-- group; Y.sub.1 and Y.sub.2 each represent --COO-- or --OCO-- group; and a, b, p, q, m and n each represent 0 or 1, provided that a+b+p+q is not 0.

REFERENCES:
patent: 5072021 (1991-12-01), Nakatsuka et al.
patent: 5290478 (1994-03-01), Satoh et al.
patent: 5496500 (1996-03-01), Toyne et al.
patent: 5589103 (1996-12-01), Yamada et al.
Noel A. Clark et al, Appl. Phys. Lett., "Submicrosecond Bistable Electro-Optic Switching in Liquid Crystals", vol. 36, No. 11, pp. 899-901 (1980).
L.A. Beresnev et al, Mol. Cryst. Liq. Cryst., vol. 89, pp. 327-338 (1982).

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