High temperature non-crystallizing cholesteric liquid crystal co

Details High temperature non-crystallizing cholesteric liquid crystal co High temperature non-crystallizing cholesteric liquid crystal co

1975-01-02

1976-08-17

Padgett, Benjamin R.

Compositions

Liquid crystal compositions

23230LC, 73356, 252408, 350160LC, 428 1, C09K 334, C07C 9724, C09B 150

Patent

active

039752887

ABSTRACT:
High temperature non-crystallizing cholesteric liquid crystal compositions are provided having at least about 50 weight percent of cholesteryl 3-chloropropionate, at least about 30 weight percent of a cholesteryl ester, wherein the acyl group has a substituted or unsubstituted benzene ring, and not more than 20 weight percent of other cholesteryl compounds. The compositions are found to provide billiant colors and do not crystallize when stored for long periods of time at room temperature or below.

REFERENCES:
patent: 3409404 (1968-11-01), Fergason
patent: 3441513 (1969-04-01), Woodmansee
patent: 3580864 (1971-05-01), Goldberg et al.
patent: 3580865 (1971-05-01), Goldberg
patent: 3585381 (1971-06-01), Hodson et al.
patent: 3619254 (1971-11-01), Davis
patent: 3620889 (1971-11-01), Baltzer
patent: 3697297 (1972-10-01), Churchill et al.
patent: 3720623 (1973-03-01), Cartmell et al.
patent: 3920574 (1975-11-01), Brown, Jr. et al.
Gray, G. W.; Molecular Structure and Properties of Liquid Crystals, Academic Press, N. Y., pp. 188-196, (1962).

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