Novel liquid crystal dyestuffs and electro-optic devices incorpo

Details Novel liquid crystal dyestuffs and electro-optic devices incorpo Novel liquid crystal dyestuffs and electro-optic devices incorpo

1978-04-24

1980-01-22

Padgett, Benjamin R.

Compositions

Radioactive compositions

Nuclear reactor fuel

252299, 252408, 350350, C02F 113, C09K 334

Patent

active

041847504

ABSTRACT:
Novel liquid crystal dyestuffs of the formula ##STR1## wherein Y and Z are different and can be nitro or cyano and --N(R).sub.2 wherein R is alkyl or alkylene, preferably of 1 to 4 carbon atoms, and X can be hydrogen, methyl, fluoro or chloro, can be added to known liquid crystal compositions to impart color to the mixtures and improve contrast in a liquid crystal electro-optic device containing such mixtures.

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