Liquid-crystalline medium

Details Liquid-crystalline medium Liquid-crystalline medium

1994-12-27

1998-05-05

Wu, Shean C.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229961, 25229901, 349182, C09K 1952, C09K 1934, C09K 1930, G02F 113

Patent

active

057469415

ABSTRACT:
The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it contains one or more compounds of the general formula I ##STR1## in which Hal is fluorine or chlorine and R is alkyl, oxaalkyl, fluoroalkyl or alkenyl, in each case having up to 7 carbon atoms.

REFERENCES:
patent: 4695398 (1987-09-01), Goto et al.
patent: 4923632 (1990-05-01), Sawada et al.
patent: 5032313 (1991-07-01), Goto et al.
patent: 5397505 (1995-03-01), Rieger et al.
patent: 5409637 (1995-04-01), Rieger et al.

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