申请人:——
公开号:US20040194236A1
公开(公告)日:2004-10-07
The present invention relates to a method of mass-colouring synthetic materials, which comprises using at least one pigment dye of formula (1) wherein R and R
1
together form a phenyl or heteroaryl radical and R
2
is hydrogen, or R
1
and R
2
together form a phenyl or heteroaryl radical and R is hydrogen, and the rings A and B may each independently of the other be substituted by C
1-C
4?alkyl, C
1
-C
4
alkoxy, halogen, —COOR
3
, —CONHR
4
and/or by —SR
5
, wherein R
3
, R
4
and R
5
are each independently of the others hydrogen, C
1
-C
4
alkyl, C
6
-C
12
aryl or heteroaryl, to synthetic materials coloured with such pigment dyes, and to novel pigment dyes of formula (3), wherein R
6
is hydrogen or bromine.
1