Method of mass-colouring synthetic materials

Abstract

The present invention relates to a method of mass-colouring synthetic materials based on terpolymers of acrylonitrile, butadiene and styrene, which comprises using at least one dye of formula (1) wherein R 1 is hydrogen, halogen, alkoxy, aryloxy, alkylthio or arylthio, R 2 is hydrogen, a carboxylic acid group or a carboxylic acid ester group, R 3 is hydrogen, halogen, alkoxy, aryloxy, alkylthio, arylthio, a carboxylic acid group or a carboxylic acid ester group, and W is a radical of formulae (2), (3), (4), (5), (6), wherein R 4 , R 8 and R 11 are each independently of the others hydrogen, alkyl, alkoxy, aryloxy, alkylthio or arylthio, R 5 , R 7 and R 10 are each independently of the others hydrogen, alkoxy, aryloxy, alkylthio, arylthio, a carboxylic acid group or a carboxylic acid ester group, R 6 and R 9 are each independently of the other cyano, —CONR 12 R 13 or —SO 2 R 14 , wherein R 12 and R 13 are each independently of the other hydrogen or C 1 -C 4 alkyl and R 14 is C 1 -C 4 alkyl, and X is —NH—, —O— or —S—, or R 5 and R 5 ′ together form a phenyl or naphthyl radical.

1 . A method of mass-colouring synthetic materials based on terpolymers of acrylonitrile, butadiene and styrene, which comprises using at least one dye of formula  
       
         
           
           
               
               
           
         
       
       wherein 
 R 1  is hydrogen, halogen, alkoxy, aryloxy, alkylthio or arylthio,  
 R 2  is hydrogen, a carboxylic acid group or a carboxylic acid ester group,  
 R 3  is hydrogen, halogen, alkoxy, aryloxy, alkylthio, arylthio, a carboxylic acid group or a carboxylic acid ester group, and  
 W is a radical of formula  
                     
 wherein  
 R 4 , R 8  and R 11  are each independently of the others hydrogen, alkyl, alkoxy, aryloxy, alkylthio or arylthio,  
 R 5 , R 7  and R 10  are each independently of the others hydrogen, alkoxy, aryloxy, alkylthio, arylthio, a carboxylic acid group or a carboxylic acid ester group,  
 R 6  and R 9  are each independently of the other cyano, —CONR 12 R 13  or —SO 2 R 14 , wherein R 12  and R 13  are each independently of the other hydrogen or C 1 -C 4 alkyl and R 14  is C 1 -C 4 alkyl, and  
 X is —NH—, —O— or —S—, or  
 R 5  and R 5 ′ together form a phenyl or naphthyl radical.  
 
     
     
         2 . A method according to  claim 1 , wherein R 4 , R 8  and R 11  as alkyl are C 1 -C 4 alkyl.  
     
     
         3 . A method according to  claim 1 , wherein R 1 , R 3 , R 4 , R 5 , R 7 , R 8 , R 10  and R 11  as alkoxy are C 1 -C 4 alkoxy.  
     
     
         4 . A method according to  claim 1 , wherein R 1 , R 3 , R 4 , R 5 , R 7 , R 8 , R 10  and R 11  as alkylthio are C 1 -C 4 alkylthio.  
     
     
         5 . A method according to  claim 1 , wherein R 1 , R 3 , R 4 , R 5 , R 7 , R 8 , R 10  and R 11  as aryloxy are C 6 -C 12 aryloxy.  
     
     
         6 . A method according to  claim 1 , wherein R 1 , R 3 , R 4 , R 5 , R 7 , R 8 , R 10  and R 11  as arylthio are C 6 -C 12 arylthio.  
     
     
         7 . The use of a dye of formula (1) according to  claim 1  in the mass-colouring of synthetic materials based on terpolymers of acrylonitrile, butadiene and styrene.  
     
     
         8 . A synthetic material based on a terpolymer of acrylonitrile, butadiene and styrene coloured according to  claim 1  with a dye of formula (1) according to  claim 1.