Solidification retardation of liquid crystalline compositions wi

Details Solidification retardation of liquid crystalline compositions wi Solidification retardation of liquid crystalline compositions wi

1975-07-31

1976-12-21

Roberts, Elbert L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07J 900

Patent

active

039988600

ABSTRACT:
Solidification of liquid crystalline compositions is retarded by incorporating therein compounds which are steroid derivatives of isostearyl carbonate. These novel carbonates which are quite stable to environmental factors such as ultraviolet light exposure, temperature changes, oxidation, etc., retard solidification of liquid crystalline compositions for extended periods of time. Moreover, these compounds, some of which of themselves exhibit color play, can be used in increasing amounts to increasingly narrow the color play range without noticeably decreasing the specular intensity of the color changes of liquid crystalline compositions.

REFERENCES:
patent: 3657538 (1972-04-01), Fergason et al.
patent: 3776927 (1973-12-01), Fergason et al.
patent: 3888892 (1975-06-01), Leder

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