Patent ID: 9341747
Filing Date: 2016-05-17
CPC Classification: B32B,C07C,C07D,C09B,C09K,G02B,G02F

Claim Text:
1. A dye-based polarizing film containing in a raw film for a polarizing film, one or more kinds of an azo compound and/or a salt thereof, which is represented by the following formula (7): wherein, A represents a naphthyl group having at least one substituent; R 1 to R 6 each independently represent a hydrogen atom an alkyl group having a carbon atom number of 1 to 5, an alkoxy group having a carbon atom number of 1 to 5, a sulfo group or an alkoxy group having a sulfo group and a carbon atom number of 1 to 5; and X represents a benzoylamino group represented by the following formula (3): in the formula (3), R 9 represents a hydrogen atom or an unsubstituted amino group; and/or a salt thereof.