5-Substituted-2-(4-cyanophenyl)-1,3,-dioxanes

Details 5-Substituted-2-(4-cyanophenyl)-1,3,-dioxanes 5-Substituted-2-(4-cyanophenyl)-1,3,-dioxanes

1980-04-03

1982-03-30

Love, Ethel G.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

25229961, C07D31904

Patent

active

043223540

ABSTRACT:
Compounds of the formula: ##STR1## wherein R is an alkyl, alkoxy, aryl, aryloxy, arylester, carboxy or ester derived from carboxy are used as liquid crystal materials in electro-optical displays.
A typical embodiment is 5-butyl-2-(4-cyanophenyl)-1,3-dioxane which has a very low threshold voltage in nematic displays. On rubbed indium oxide surfaces the threshold voltage was 0.6 V using predominately the trans isomer. It was nematic over the range 32.2.degree. C. to 34.6.degree. C.

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Mol. Cryst. Liquid Cryst. vol. 56 (Letters), pp. 279-281 Gordon & Breach, Science Publishers, Inc.

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