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US 8,771,378 B2Granted
Azo compound and salt thereof, and dye-containing polarizing film comprising the compound or salt
AssigneesNippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.
InventorsYuichi Sadamitsu, Takuto Nishiguchi, Hiroaki Ohno
Life of this patent
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Abstract
Disclosed is an azo compound represented by the general formula (1) or a salt thereof: wherein R1 and R2 independently represent a hydrogen atom, a lower alkyl group or a lower alkoxy group; and n represents 1 or 2. Also disclosed are a dye-containing polarizing film and a dye-containing polarizing plate, each of which comprises a polarizing film base material and the azo compound contained in the base material.
Claims3
An azo compound represented by the following formula (1) and a salt thereof:
- wherein R1 and R2 each independently represent a hydrogen atom, a lower alkyl group, and a lower alkoxy group;
- n is 2.
Dependencies are inferred from the claim text.