4-Substituted phenyl 4'-(5-n-alkyl-1,3-dioxan-2-yl)benzoates

Details 4-Substituted phenyl 4'-(5-n-alkyl-1,3-dioxan-2-yl)benzoates 4-Substituted phenyl 4'-(5-n-alkyl-1,3-dioxan-2-yl)benzoates

1980-12-03

1982-02-02

Love, Ethel G.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

25229961, C07D31904

Patent

active

043138780

ABSTRACT:
Disclosed are compounds of the formula: ##STR1## wherein R.sub.1 is an alkyl group and R.sub.2 is an alkyl, alkoxy, acyloxy, alkyl carbonato group having 1 to 10 carbon atoms, CN or NO.sub.2. The compounds of the invention are useful as liquid crystal materials in electrooptical displays.
Also disclosed are novel admixtures of the above benzoate compounds with cyanophenyl dioxane compounds, these admixtures being especially useful for multiplexed electrooptical displays. Preferred admixtures include at least about 40 weight percent of the above benzoate compounds and at least about 40 weight percent of cyanophenyl dioxane compounds with other liquid crystalline compounds such as phenyl cyclohexanecarboxylate, biphenyl and/or phenyl benzoate liquid crystalline compounds also being present in amounts up to about 20 weight percent.

REFERENCES:
patent: 4085222 (1978-04-01), Rhodes et al.
patent: 4200580 (1980-04-01), Hsu
patent: 4229315 (1980-10-01), Krause et al.

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