申请人:Ouziel Philippe
公开号:US20080178395A1
公开(公告)日:2008-07-31
The invention relates to a method of increasing the depth of shade of dyed natural or synthetic polyamide fibre materials, which comprises treating the fibre material before, during or after dyeing with a liquor comprising a compound of formula (1) wherein R is halogen, C
1
-C
12
alkyl, C
5
-C
24
aryl, C
6
-C
36
aralkyl, —OR
1
, or —NR
1
R
2
, R
1
and R
2
being, each independently of the other, hydrogen, C
1
-C
12
alkyl unsubstituted or substituted by one or more hydroxy, amino, mercapto, carboxyl, sulfo, C
1
-C
12
alkylsulfonyl, C
5
-C
24
arylsulfonyl or C
6
-C
36
aralkylsulfonyl groups, C
5
-C
24
aryl unsubstituted or substituted by one or more hydroxy, amino, carboxyl, sulfo, C
1
-C
12
alkylsulfonyl, C
5
-C
24
arylsulfonyl or C
6
-C
36
aralkylsulfonyl groups, or C
6
-C
36
aralkyl unsubstituted or substituted by one or more hydroxy, amino, carboxyl, sulfo, C
1
-C
12
alkylsulfonyl, C
5
-C
24
arylsulfonyl or C
6
-C
36
aralkylsulfonyl groups, X and Y are, each independently of the other, mercapto, —NR
3
R
4
or —N
+
R
3
R
4
R
5
A
−
, wherein R
3
, R
4
and R
5
are, each independently of the others, hydrogen or C
1
-C
12
alkyl and A
−
is chloride, bromite, iodide, sulfate or methylsulfate, R
6
and R
7
are, each independently of the other, hydrogen or C
1
-C
12
alkyl, and x and y are, each independently of the other, a number from 2 to 12.