Use of optically active oxirane-2-carboxylic acid esters as dopa

Details Use of optically active oxirane-2-carboxylic acid esters as dopa Use of optically active oxirane-2-carboxylic acid esters as dopa

1988-05-26

1991-01-29

Maples, John S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229901, 350350S, 544238, 544318, 544298, 544335, 546268, 549 21, 549 22, 549370, 549549, 549512, C09K 1934

Patent

active

049884590

ABSTRACT:
Optically active oxirane-2-carboxylic acid esters with a mesogenic molecular component suitable as dopants in liquid-crystal mixtures. They result in liquid-crystalline ferroelectric phases with short switching times and in electroclinic phases with large electroclinic coefficients. A further advantage lies in the fact that they induce a helix with a very small pitch so that they are also suitable for helix compensation in LC mixtures.

REFERENCES:
patent: 4592858 (1986-06-01), Higuchi et al.
patent: 4638073 (1987-01-01), Walba et al.
patent: 4705874 (1987-10-01), Walba et al.
patent: 4789751 (1988-12-01), Walba et al.
patent: 4835295 (1989-05-01), Walba et al.
patent: 4876028 (1989-10-01), Hemmerling et al.
patent: 4880561 (1989-10-01), Tabohashi et al.
Duebal et al., Jpn. J. Appl. Phys. Part 2, 27(12) L2241, 1988.

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