Mesogenic products for liquid crystal cells

Details Mesogenic products for liquid crystal cells Mesogenic products for liquid crystal cells

1977-12-05

1980-10-14

Sneed, Helen M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

560141, C09F 700, C11C 300

Patent

active

042280877

ABSTRACT:
The present invention relates to a family of substances which, in different temperature ranges, exhibit smectic or nematic properties of mesomorphism. Their general formula is: ##STR1## where R designates one of the three radicals: ##STR2## (n being a whole number ranging from 1 to 20) and X designating a halogen (Br preferably) or the nitrile radical C N.

REFERENCES:
patent: 2141172 (1938-12-01), Christiansen et al.
patent: 2457805 (1949-01-01), Cade et al.
patent: 2506361 (1950-05-01), Higgins
patent: 3102840 (1963-09-01), Musser et al.
patent: 3334125 (1967-08-01), Richter
Chemical Abstracts 42 1919c (1948).

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