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US 2019/0048194 A1Published application
Azo Compound Or Salt Thereof, And Polarizing Film Containing Same
AssigneesNippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.
InventorsTakahiro Higeta, Mitsunori Nakamura, Yu Hattori, Noriaki Mochizuki
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Abstract
The purpose of the present invention is to provide: a high performance dye-based polarizing film and dye-based polarizing plate, in particular a neutral gray high performance dye-based film and dye-based polarizing plate, having excellent polarizing performance and moisture resistance, heat resistance and light resistance; and an azo compound or a salt thereof able to produce same. The present invention provides an azo compound represented by formula (1) or a salt thereof.
Claims36
An azo compound represented by formula (1) or a salt thereof:
- wherein Ag1 represents a phenyl group which may have a substituent or a naphthyl group having a substituent;
- Bg and Cg are each independently represented by formula (BC-N) or formula (BC-P), both or either one represents formula (BC-N);
- and Xg1 represents an amino group which may have a substituent, a phenylamino group which may have a substituent, a benzoylamino group which may have a substituent, a naphthotriazole which may have a substituent or a phenylazo group which may have a substituent:
- wherein Rg1 represents a hydrogen atom, a C1-5 alkyl group, a C1-5 alkoxy group or a C1-5 alkoxy group having a sulfo group;
- and k represents an integer of 0 to 2:
- wherein Rg2 and Rg3 each independently represent a hydrogen atom, a C1-5 alkyl group, a C1-5 alkoxy group or a C1-5 alkoxy group having a sulfo group.
3 more elements
Dependencies are inferred from the claim text.