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US 4,840,640 AGranted
Polarizing film: polymer film base containing substituted anthraquinone dichroic dye
AssigneeMitsubishi Chemical Industries Limited
InventorsKonoe Miura, Tetsuo Ozawa, Seigo Okumura, Hidetoshi Urashima
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Abstract
A polarizing film which comprises a film base having thereon an anthraquinone dye of general formula (I): ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom, an alkyl group, an alkoxy group, an aralkyloxy group, an aryl group, a cyclohexyl group, a 4-alkylcyclohexyl group, a carboxylic acid ester group, a carboxylic acid amide group, a halogen atom, ##STR2## X represents an oxygen atom, a sulfur atom or an amino group.
Claims6
A polarizing film which comprises a film base having thereon an anthraquinone dye of general formula (I):
- ##STR41## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom, an alkyl group, an alkoxy group, an aralkyloxy group, an aryl group, a cyclohexyl group, a 4-alkylcyclohexyl group, a carboxylic acid ester group, a carboxylic acid amide group, a halogen atom, ##STR42## X represents an oxygen atom, a sulfur atom or an amino group.
Dependencies are inferred from the claim text.