1,3-dioxane derivative and liquid crystal compositions containin

Details 1,3-dioxane derivative and liquid crystal compositions containin 1,3-dioxane derivative and liquid crystal compositions containin

1992-12-08

1994-10-11

Stoll, Robert L.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

549369, 549370, C09K 1934, C07D31906, C07D40700

Patent

active

053545028

ABSTRACT:
A 1,3-dioxane derivative and a liquid crystal composition containing it as expressed by the general formula ##STR1## (where R is a straight chain alkyl group of carbon number 1 to 10, A is a single bond or --CH.sub.2 CH.sub.2 -- group, n is 0 or 1, and the cyclohexane ring and 1,3-dioxane ring are respectively in trans form is disclosed.) The 1,3-dioxane derivative represented by general formula (I) has a very large dielectric anisotropy and a small birefringence. Liquid crystal compositions containing (I) can be driven at low voltage and will provide a liquid crystal display apparatus with a wide visual angle.

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patent: 5026879 (1991-06-01), Obikawa
E. Kleinpeter, et al., Liquid-Crystalline Behaviour of 2,5-Disubstituted 1,3-Dioxanes Subject to the Flexibility of Terminal Chain, 4 Nov. 1987.
H.-M. Vorbrodt, et al., New Liquid Crystalline 2,5-Disubstituted 1,3-Dithians and 1,3-Dioxanes, Jul. 19, 1984.

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