Mixture of liquid crystals exhibiting positive dielectric anisot

Details Mixture of liquid crystals exhibiting positive dielectric anisot Mixture of liquid crystals exhibiting positive dielectric anisot

1975-06-11

1976-09-07

Padgett, Benjamin R.

Compositions

Liquid crystal compositions

350160LC, C09K 334, G02F 113

Patent

active

039793214

ABSTRACT:
A mixture of liquid crystals comprising a substance which imparts a medium positive dielectric anisotropy, and substances which widen the mesomorphic temperature range or impart good long-term stability, is provided. The mixture in accordance with the invention comprises at least one substance of the formula: ##SPC1##
Or its isomer of the formula: ##SPC2##
Where R is an alkyl or alkoxy radical and at least one substance of the formula: ##SPC3##
Where the radical R is of the same kind as mentioned earlier or substance of the formula: ##SPC4##
Or its isomer of the formula: ##SPC5##
Where R is an alkoxy radical.

REFERENCES:
patent: 3872140 (1975-03-01), Klanderman et al.
patent: 3891307 (1975-06-01), Tsukamoto et al.
Gray, G. W. et al., Electronics Letters, vol. 9, No. 6, pp. 130-131, (Mar. 1973).
Dave, J. S. et al., J. Chem. Soc. (A), pp. 1473-1478, (1967).

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