Disperse azo dye mixtures

Abstract

The present invention relates to dye mixtures comprising at least one compound of the formula (I) and at least one compound of the formula (II) where the substituents are each as defined in the description part, which are highly useful for dyeing and printing hydrophobic synthetic material.

What is claimed is: 
     
       1. A mixture comprising 5 to 60% by weight of at least one compound of the formula (I) 
       
         
           
           
               
               
           
         
         where R 1  is hydrogen, C 1 -C 4 -alkyl, halogen, or C 1 -C 4 -alkoxy, 
         n is 1 or 2, and the 
         ring A is optionally substituted unsubstituted, 
         and 20 to 95% by weight of at least one compound of the formula (II) 
       
       
         
           
           
               
               
           
         
         where X is halogen, or CN, 
         R 2  and R 5  are independently hydrogen or C 1 -C 4 -alkyl, and 
         R 3  and R 4  are independently hydrogen, optionally substituted C 1 -C 4 -alkyl or C 2 -C 4 -alkenyl or unsubstituted C 1 -C 4 -alkyl, 
         based on total amount of dye in the mixture. 
       
     
     
       2. The mixture of  claim 1 , comprising at least one compound of the formula (I) where the ring A does not bear any further substituents. 
     
     
       3. The mixture of  claim 1 , comprising at least one compound of the formula (I) where R 1  is hydrogen or C 1 -C 4 -alkyl. 
     
     
       4. The mixture of  claim 1 , comprising at least one compound of the formula (I), where n is 1, R 1  is hydrogen or methyl and the ring A is not further substituted. 
     
     
       5. The mixture of  claim 1 , comprising compounds of the formula (II) where X is halogen. 
     
     
       6. The mixture of  claim 1 , comprising compounds of the formula (II) where
 R 3  and R 4  are independently hydrogen, C 2 -C 4 -alkenyl, unsubstituted C 1 -C 4 -alkyl or ROCO—, NC— and/or ROOC-substituted C 1 -C 4 -alkyl, R being hydrogen or C 1 -C 4 -alkyl.   
     
     
       7. The mixture of  claim 1 , further comprising a compound of the formula (III), (IV) and/or (V) 
       
         
           
           
               
               
           
         
       
       where
 X 1  is halogen or CN, 
 X 2  is halogen, hydrogen, NO 2  or CN, 
 R 6  is C 1 -C 4 -alkyl, 
 R 7  and R 8  are independently hydrogen, unsubstituted or HO—, NC—, ROCO—, H 5 C 6 OCO—, (C 1 -C 4 -alkyl) OOCO—, ROOC—, H 5 C 6 O—, H 5 C 6 — and/or C 1 -C 4 -alkoxy-substituted C 1 -C 4 -alkyl and/or C 2 -C 4 -alkenyl, R being hydrogen or C 1 -C 4 -alkyl, 
 Y 1  and Y 2  are independently hydrogen or halogen, 
 R 9  and R 10  are independently hydrogen, unsubstituted or HO—, NC—, ROCO—, H 5 C 6 OCO— and/or C 1 -C 4 -alkoxy-substituted C 1 -C 4 -alkyl, R being as defined above, or C 2 -C 4 -alkenyl, 
 R 11  is C 1 -C 4 -alkyl, and 
 R 12  is hydrogen, C 1 -C 4 -alkyl or C 1 -C 4 -alkoxy. 
 
     
     
       8. The mixtures of  claim 1 , comprising 1 to 99% by weight, especially 1 to 80% by weight, of at least one compound of the formula (I) and 1 to 99% by weight, especially 20 to 99% by weight, of at least one compound of the formula (II), based on total amount of dye. 
     
     
       9. A dye preparation comprising
 10 to 60% by weight of dye mixture according to  claim 1 , and 
 40 to 90% by weight of dispersant. 
 
     
     
       10. A process for producing the dye preparation of  claim 8  claim 9, in which the individual dyes of the dye mixture of  claim 1  are ground in water in the presence of a dispersant, then mixed and optionally dried or in which the dye mixture of  claim 1  is ground in water in the presence of a dispersant and optionally dried. 
     
     
       11. A method for dyeing and printing hydrophobic synthetic materials or for mass coloration of hydrophobic synthetic materials in which the dye mixture of  claim 1  is used. 
     
     
       12. The A hydrophobic synthetic material dyed or printed with the dye mixture of  claim 1 . 
     
     
       13. The mixture of claim 1, further comprising 2 to 60% by weight of at least one compound of the formula (III), based on the total amount of dye in the mixture, 
       
         
           
           
               
               
           
         
         X 1  is halogen, 
         X 2  is halogen, hydrogen, NO 2  or CN, 
         R 6 , R 7  and R 8  are independently C 1 -C 4 -alkyl. 
       
     
     
       14. A process for producing the dye preparation of claim 9, in which the individual dyes of the dye mixture are ground in water in the presence of a dispersant, then mixed and optionally dried or in which the dye mixture is ground in water in the presence of a dispersant and optionally dried wherein the mixture comprises 5 to 60% by weight of at least one compound of the formula (I) and 20 to 95% by weight of at least one compound of the formula (II), based on total amount of dye.