Ionophore-containing ferroelectric liquid crystal mixtures

Details Ionophore-containing ferroelectric liquid crystal mixtures Ionophore-containing ferroelectric liquid crystal mixtures

1991-04-10

1992-12-01

Stoll, Robert L.

Compositions

Liquid crystal compositions

2522996, 2522995, 2522992, C09K 1952, C09K 1906, C09K 1958, C09K 1954

Patent

active

051678560

ABSTRACT:
The occurrence of twist states in FLC displays can be suppressed by adding ionophores to FLC mixtures. Applicable ionophores are amides of the general formula I ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 e.g. are alkyl, cyclohexyl, phenyl or benzyl and X is alkylene with --CH.sub.2 -groups being replaced by --O--, 1,2-phenylene or 1,2-cyclohexylene.

REFERENCES:
patent: 4966726 (1990-10-01), Scherowsky et al.
F. Voegtle et al., Chemische Bericht, vol. 116, No. 5, 1983, pp. 2028-2034.

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