Liquid crystalline compound having branched alkyl group at its s

Details Liquid crystalline compound having branched alkyl group at its s Liquid crystalline compound having branched alkyl group at its s

1996-03-22

1998-02-03

Wu, Shean C.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229901, 25229966, 349182, 570127, 570131, C09K 1930, C09K 1952, G02F 113, C07C 2513

Patent

active

057140880

ABSTRACT:
Liquid crystalline compounds are disclosed which are expressed by the following general formula (1) ##STR1## wherein R.sub.1 represents a branched alkyl group having 3 to 10 carbon atoms, ring A represents 1,4-phenylene group or 1,4-cyclohexylene group, Z.sub.1 and Z.sub.2 independently represent a single bond or 1,2-ethylene group, respectively, X.sub.1, X.sub.2, X.sub.3, and X.sub.4 independently represent fluorine atom or hydrogen atom, respectively, and Y.sub.1 represents oxygen atom or a single bond. The compounds are excellent in compatibility with other liquid crystalline compounds, and have a large positive value of dielectric anisotropy, extremely low viscosity, extremely high specific resistance (high voltage holding ratio), and excellent UV stability.

REFERENCES:
CA 123:242169, 1995.
Patent Abstracts of Japan, vol. 16, No. 470 (C-0990), Sep. 30, 1992, & JP-A-04 169541.

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