Pleochroic dyes

Details Pleochroic dyes Pleochroic dyes

1976-06-14

1979-03-20

Padgett, Benjamin R.

Compositions

Radioactive compositions

Nuclear reactor fuel

252299, 252408, 260143, 260144, 260156, 260158, 260166, 260169, 260186, 260189, 260190, 260191, 260194, 260205, 260206, C09K 334, G02F 113

Patent

active

041451147

ABSTRACT:
A dye compound suitable for use in solution with a liquid crystal material is characterized by one of the following formulae: ##STR1## (III) a derivative of (I) or (II) containing one or more simple lateral substituents or bridging groups on the benzene rings: ##STR2## where n.sub.1, n.sub.2, n.sub.3 are integers in the range 0 to 4, A is azo or azoxy, X is cyano, or nitro and Y.sub.1 and Y.sub.2 are one of the following: hydrogen, alkoxy, arylalkoxy or N.sub.R.sbsb.2.sup.R.sbsp.1 where R.sub.1 and R.sub.2 are alkyl, substituted alkyl or alkylene groups.

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