Liquid crystal optical elements

Details Liquid crystal optical elements Liquid crystal optical elements

1987-08-19

1989-06-27

Gron, Teddy S.

Compositions

Radioactive compositions

Nuclear reactor fuel

25229901, 2522995, 25229966, 350350R, 350350S, 365108, 428 1, G02F 113, C09K 1954, C09K 1952

Patent

active

048423807

ABSTRACT:
Disclosed is a liquid crystal optical element for use in information recording media and displays, which is composed of a polymeric liquid crystal and from 0.01% to 10% by weight, on the basis of the polymeric liquid crystal, of a biphenyl or biphenyl derivative of formula (I) ##STR1## wherein X and Y each represents a hydrogen atom, an alkyl group, an oxyalkyl group, a halogen atom, a nitrile group, or a nitro group. By the addition of the biphenyl or biphenyl derivative, the orientation of the polymeric liquid crystal is improved.

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Hopwood, A. I., et al., Polymer, vol. 26, pp. 1312-1318 (8/85).
Finkelmann, H., et al., Mol. Cryst. LiR. Cryst., vol. 89, pp. 23-36 (1982).

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