Colouring preparations

Abstract

The present invention relates to colorant preparations comprising a) at least one colorant in particulate form, b) at least one organic solvent having a boiling point of at least 247° C., measured at atmospheric pressure, and c) water, and less than 0.25% by weight of organic solvents having a boiling point below 247° C., measured at atmospheric pressure

1 . An ink jet process ink comprising 
 a) at least one colorant in particulate form,    b) at least one organic solvent having a boiling point of at least 247° C., measured at atmospheric pressure, and    c) water,    and less than 0.25% by weight of organic solvents having a boiling point below 247° C., measured at atmospheric pressure.    
   
   
       2 . The ink jet process ink according to  claim 1  wherein all organic solvents b) have a boiling point of at least 250° C., measured at atmospheric pressure.  
   
   
       3 . The ink jet process ink according to  claim 1 , wherein all organic solvents b) have a decomposition point of at least 200° C.  
   
   
       4 . The ink jet process ink according to  claim 1  which comprises at least 30% by weight of water c).  
   
   
       5 . The ink jet process ink according to  claim 1  which comprises less than 500 ppm of free heavy metal ions.  
   
   
       6 . A process for printing a substrate by an ink jet process using the ink jet process ink according to  claim 1 .  
   
   
       7 . The process according to  claim 6  wherein the substrate is a textile substrate.  
   
   
       8 . A printed substrate obtained according to the process of  claim 6.