Mixtures of nematic liquid crystal materials

Details Mixtures of nematic liquid crystal materials Mixtures of nematic liquid crystal materials

1978-04-27

1979-04-03

Padgett, Benjamin R.

Compositions

Liquid crystal compositions

252408, 350350, C09K 334, G02F 113

Patent

active

041476565

ABSTRACT:
Liquid crystal mixtures are disclosed which contain 30-60% of a Schiff's base nematic liquid crystal compound, 25-65% of a second nematic liquid crystal compound selected from the classes of azoxy, ester and biphenyl, and 5-15% of a triphenyl compound to raise the isotropic transition temperature. This combination results in liquid crystal compositions having unexpectedly wide nematic temperature ranges.

REFERENCES:
patent: RE29349 (1977-08-01), Strepel
patent: 3655270 (1972-04-01), Creagh
patent: 3815972 (1974-06-01), Hsieh
patent: 3838059 (1974-09-01), Wong
patent: 3880767 (1975-04-01), Chang et al.
patent: 3927064 (1975-12-01), Boller et al.
patent: 3953491 (1976-04-01), Steinstrasser et al.
patent: 3960749 (1976-06-01), Fergason
patent: 3989639 (1976-11-01), Yaguchi et al.
patent: 3997463 (1976-12-01), Narusawa et al.
Creagh, L. T., Proc. IEEE, vol. 61, No. 7, pp. 814-821 (1973).
Elliott, C. et al., Electronics Lett., vol. 9, No. 17, pp. 399-401 (1973).

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