Mixtures of reactive dyes and their use

Abstract

Dye mixtures comprising at least one dye of formula together with at least one dye from the group of formulae wherein the radicals have the definitions given in the claims, are suitable for dyeing or printing cellulose-containing fibre materials, while at the same time exhibiting good build-up behaviour, and yield dyeings of deep shade having good fastness properties.

1 . A dye mixture comprising
 at least one dye of formula   
     
       
         
         
             
             
         
       
       and at least one dye from the group of formulae 
     
     
       
         
         
             
             
         
       
       wherein 
       (R 1 ) b  denotes b identical or different substituents from the group C 1 -C 4  alkyl, C 1 -C 4  alkoxy, sulfo and halogen, 
       R 2 , R 3 , R 4  and R 5  are each independently of the others hydrogen, C 1 -C 4  alkyl, C 1 -C 4  alkoxy, sulfo or halogen, 
       G is a phenylene radical that is unsubstituted or substituted by C 1 -C 4  alkyl, C 1 -C 4  alkoxy, halogen, carboxy or by sulfo, or is a cyclohexylene, phenylenemethylene or C 2 -C 6  alkylene radical, 
       one of the radicals Q 1  and Q 2  is amino and the other of the radicals Q 1  and Q 2  is hydroxy, 
       X 1  is halogen, 
       Y 1 , Y 2  and Y 3  are each independently of the others a fibre-reactive radical of formula 
     
     
       
         
         
             
             
         
       
       wherein 
       X 2  is halogen, 
       T 2  independently has the definition of X 2 , is a non-fibre-reactive substituent or is a fibre-reactive radical of formula 
     
     
       
         
         
             
             
         
       
       (R 6 ) 0-2  denotes from 0 to 2 identical or different substituents from the group halogen, C 1 -C 4  alkyl, C 1 -C 4 alkoxy and sulfo, 
       Z is vinyl or a —CH 2 —CH 2 -U radical and U is a group that is removable under alkaline conditions, 
       Q is a —CH(Hal)-CH 2 -Hal or —C(Hal)=CH 2  group, 
       m and n are each independently of the other the number 2, 3 or 4 and 
       Hal is halogen, 
       T 1  is a fibre-reactive radical of the above formula (6b), (6c), (6d) or (6e) and 
       b and k are each independently of the other the number 0, 1 or 2. 
     
   
   
       2 . A dye mixture according to  claim 1 , wherein T 1  is a radical of formula (6b), (6c) or (6d). 
   
   
       3 . A dye mixture according to  claim 1 , wherein the dye of formula (1) is a dye of formula 
     
       
         
         
             
             
         
       
       wherein 
       T 1 , X 1 , Y 1  and k each have the definitions according to  claim 1 . 
     
   
   
       4 . A dye mixture according to  claim 1 , wherein the dye of formula (2) is a dye of formula 
     
       
         
         
             
             
         
       
       wherein 
       R 2  is hydrogen or C 1 -C 4  alkoxy, 
       R 3  is hydrogen, C 1 -C 4  alkyl or C 1 -C 4  alkoxy, and 
       each Z, independently, has the definition according to  claim 1 . 
     
   
   
       5 . A dye mixture according to  claim 1 , wherein the dye of formula (3) is a dye of formula 
     
       
         
         
             
             
         
       
       wherein 
       (R 7 ) 0-4  denotes from 0 to 4 identical or different substituents from the group C 1 -C 4  alkyl, C 1 -C 4  alkoxy, halogen, carboxy and sulfa and 
       Y 2  has the definition according to  claim 1 . 
     
   
   
       6 . A dye mixture according to  claim 1 , wherein the dye of formula (4) is a dye of formula 
     
       
         
         
             
             
         
       
       wherein 
       Y 3  has the definition according to  claim 1 . 
     
   
   
       7 . An aqueous ink comprising a dye mixture according to  claim 1 . 
   
   
       8 . A process for the printing of a substrate comprising spraying individual droplets of an aqueous ink onto the substrate from a nozzle in a controlled manner wherein the aqueous ink comprises a dye mixture comprising at least one dye of formula 
     
       
         
         
             
             
         
       
       and at least one dye from the group of formulae 
     
     
       
         
         
             
             
         
       
       wherein 
       (R 1 ) b  denotes b identical or different substituents from the group C 1 -C 4a  alkyl, C 1 -C 4a  alkoxy, sulfo and halogen, 
       R 2 , R 3 , R 4  and R 5  are each independently of the others hydrogen, C 1 -C 4  alkyl, C 1 -C 4  alkoxy, sulfo or halogen, 
       G is a phenylene radical that is unsubstituted or substituted by C 1 -C 4  alkyl, C 1 -C 4  alkoxy, halogen, carboxy or by sulfo, or is a cyclohexylene, phenylenemethylene or C 2 -C 6  alkylene radical, 
       one of the radicals Q 1  and Q 2  is amino and the other of the radicals Q 1  and Q 2  is hydroxy, 
       X 1  is halogen, 
       Y 1 , Y 2  and Y 3  are each independently of the others a fibre-reactive radical of formula 
     
     
       
         
         
             
             
         
       
       wherein 
       X 2  is halogen, 
       T 2  independently has the definition of X 2 , is a non-fibre-reactive substituent or is a fibre-reactive radical of formula 
     
     
       
         
         
             
             
         
       
       (R 6 ) 0-2  denotes from 0 to 2 identical or different substituents from the group halogen, C 1 -C 4  alkyl, C 1 -C 4 alkoxy and sulfa, 
       Z is vinyl or a —CH 2 —CH 2 -U radical and U is a group that is removable under alkaline conditions, 
       Q is a —CH(Hal)-CH 2 -Hal or —C(Hal)=CH 2  group, 
       m and n are each independently of the other the number 2, 3 or 4 and 
       Hal is halogen, 
       T 1  is a fibre-reactive radical of the above formula (6b), (6c), (6d) or (6e) and 
       b and k are each independently of the other the number 0, 1 or 2. 
     
   
   
       9 . The process of  claim 8  wherein the substrate is a textile fibre material. 
   
   
       10 . A method for dyeing fibre material which comprises applying a dye mixture according to  claim 1  to the fibre material and fixing the dye to the fibre material. 
   
   
       11 . The method according to  claim 10  wherein the fibre material is a hydroxyl-group-containing fibre material or a nitrogen-group-containing fibre material. 
   
   
       12 . The method of  claim 10  wherein the fibre material is a cellulosic fibre material. 
   
   
       13 . The method of  claim 12  wherein the cellulosic fibre material is a cotton-containing fibre material.