Liquid crystal compounds and materials and devices containing th

Details Liquid crystal compounds and materials and devices containing th Liquid crystal compounds and materials and devices containing th

1979-08-01

1981-04-14

Gron, Teddy S.

Compositions

Radioactive compositions

Nuclear reactor fuel

252299, 252408, 260465D, 560102, 560118, 350346, G02F 113, C09K 334, C07C 6976, C07C 6974, C07C12146, C07C12162, C07C12164

Patent

active

042616522

ABSTRACT:
A novel liquid crystal compound has the molecular structure: ##STR1## where R is an alkyl group, which may contain up to 18 carbon atoms and which may be normal or branched and may contain a chiral center, ##STR2## is a bicyclo (2.2.2) octane ring, --X-- is and Y is a cyano group CN or R.sup.1 or OR.sup.1 where R.sup.1 has the same definition as R.
The compound may be used in mixtures with other liquid crystal compounds in the same or other families and the compound or mixtures may be used in known liquid crystal devices, eg the twisted nematic and cholesteric-to-nematic phase change devices, depending on its properties.

REFERENCES:
patent: 3876286 (1975-04-01), Deutscher et al.
patent: 4002670 (1977-01-01), Steinstrasser
patent: 4017416 (1977-04-01), Inukai et al.
patent: 4058478 (1977-11-01), Boller et al.
patent: 4065489 (1977-12-01), Steinstrasser et al.
patent: 4112239 (1978-09-01), DuBois et al.
patent: 4113647 (1978-09-01), Coates et al.
patent: 4119558 (1978-10-01), Coates et al.
patent: 4130502 (1978-12-01), Eidenschink et al.
patent: 4149413 (1979-04-01), Gray et al.
patent: 4154697 (1979-05-01), Eidenschink et al.
Dewar, M. J. S., et al., J. Am. Chem. Soc., vol. 92, No. 6, pp. 1582-1586 (1970).

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