摘要:
Disclosed is an azo compound represented by the following general formula (1). (In the formula, R 1 and R 2 independently represent a hydroxy group or a polymerizable functional group selected from the group consisting of (meth)acryloyl groups, (meth)acryloyloxy groups, (meth)acrylamide groups, vinyl groups, vinyloxy groups and maleimide groups; X 1 represents a single bond when R 1 is a hydroxy group or represents a linking group expressed as -(A 1 -B 1 ) m - when R 1 is a polymerizable functional group; X 2 represents a single bond when R 2 is a hydroxy group or represents a linking group expressed as -(A 2 -B 2 ) n - when R 2 is a polymerizable functional group; R 3 and R 4 independently represent -OR 7 , a hydroxyalkyl group having 1-4 carbon atoms or -CONR 8 R 9 ; and R 5 and R 6 independently represent a carboxy group, a sulfo group, a nitro group, an amino group or a hydroxy group.)