| 摘要 |
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<SUB>1</SUB>-C<SUB>12</SUB>alkyl, C<SUB>5</SUB>-C<SUB>24</SUB>aryl, C<SUB>6</SUB>-C<SUB>36</SUB>aralkyl, -OR<SUB>1</SUB>, or -NR<SUB>1</SUB>R<SUB>2</SUB>, R<SUB>1 </SUB>and R<SUB>2 </SUB>being, each independently of the other, hydrogen, C<SUB>1</SUB>-C<SUB>12</SUB>alkyl unsubstituted or substituted by one or more hydroxy, amino, mercapto, carboxyl, sulfo, C<SUB>1</SUB>-C<SUB>12</SUB>alkylsulfonyl, C<SUB>5</SUB>-C<SUB>24</SUB>arylsulfonyl or C<SUB>6</SUB>-C<SUB>36</SUB>aralkylsulfonyl groups, C<SUB>5</SUB>-C<SUB>24</SUB>aryl unsubstituted or substituted by one or more hydroxy, amino, carboxyl, sulfo, C<SUB>1</SUB>-C<SUB>12 </SUB>alkylsulfonyl, C<SUB>5</SUB>-C<SUB>24</SUB>arylsulfonyl or C<SUB>6</SUB>-C<SUB>36</SUB>aralkylsulfonyl groups, or C<SUB>6</SUB>-C<SUB>36</SUB>aralkyl unsubstituted or substituted by one or more hydroxy, amino, carboxyl, sulfo, C<SUB>1</SUB>-C<SUB>12</SUB>alkylsulfonyl, C<SUB>5</SUB>-C<SUB>24</SUB>arylsulfonyl or C<SUB>6</SUB>-C<SUB>36</SUB>aralkylsulfonyl groups, X and Y are, each independently of the other, mercapto, -NR<SUB>3</SUB>R<SUB>4 </SUB>or -N<SUP>+</SUP>R<SUB>3</SUB>R<SUB>4</SUB>R<SUB>5</SUB>A<SUP>-</SUP>, wherein R<SUB>3</SUB>, R<SUP>4 </SUP>and R<SUB>5 </SUB>are, each independently of the others, hydrogen or C<SUB>1</SUB>-C<SUB>12</SUB>alkyl and A<SUP>-</SUP> is chloride, bromite, iodide, sulfate or methylsulfate, R<SUB>6 </SUB>and R<SUB>7 </SUB>are, each independently of the other, hydrogen or C<SUB>1</SUB>-C<SUB>12</SUB>alkyl, and x and y are, each independently of the other, a number from 2 to 12.
|
