Azo Compounds, And Dye-Based Polarizing Films And Polarizing Plates Comprising The Same
申请人:Nishiguchi Takuto
公开号:US20110075076A1
公开(公告)日:2011-03-31
Azo compounds represented by formula (1) or (2) (In the formulas, A represents a phenyl group or naphthyl group that has at least 1 substituent. R
1
-R
4
represent a hydrogen atom, lower alkyl group or lower alkoxy group, with at least one of R
1
-R
4
being a lower alkoxy group that has a sulfone group. X represents an optionally substituted amino group, optionally substituted benzoylamino group, optionally substituted phenylamino group, optionally substituted phenyl azo group or optionally substituted naphthotriazole group) and salts thereof.