申请人:Ishiwata Yasuhiro
公开号:US20080027221A1
公开(公告)日:2008-01-31
An azo dye represented by the following formula (I):
wherein, in formula (I), R
1
, R
2
, R
3
, and R
4
each independently represent a hydrogen atom, an aliphatic group, an aryl group, a halogen atom, an acyl group, a cyano group, an acylamino group, an aliphatic oxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group, an aliphatic sulfonyl group, an arylsulfonyl group, a sulfamoyl group, an aliphatic oxycarbonylamino group, an aryloxycarbonylamino group, a sulfo group, a carboxyl group, a carbamoylamino group, a sulfamoylamino group, or an aliphatic- or aromatic-sulfonylamino group, wherein R
1
and R
2
and/or R
3
and R
4
may be combined with each other to form a five- or six-membered aromatic ring or non-aromatic ring; X represents a carbon atom or a nitrogen atom, wherein
n
is 0 when X is a nitrogen atom and
n
is 1 when X is a carbon atom; A, B, C, and D each represent a carbon atom or a nitrogen atom, provided that at least one of A, B, C and D represents a nitrogen atom; Y represents a substituent; and
m
denotes an integer from 0 to 3.