- Azo Compound Or Salt Thereof, And Dye-Based Polarizing Film And Dye-Based Polarizing Plate Containing Same
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An azo compound represented by the following formula (1) or a salt thereof, Wherein A1 represents a naphthyl group which may have a substituent;A2, A3, and A4 each independently represent a phenyl group which may have a substituent or a naphthyl group which may have a substituent;R1 represents a hydrogen atom, a hydroxy group, a C1-4 alkoxy group, or a substituted or unsubstituted amino group;m represents an integer of 0 to 5;M represents a hydrogen atom or ion, a metal ion, or an ammonium ion;n represents 1 or 2;k represents 0 or 1; andeach hydrogen atom on ring a and ring b may be substituted with the substituent R1 or substituent SO3M.
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Paragraph 0114
(2022/01/24)
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