Process for dyeing a mixture of two or more different fibre types

Abstract

The invention relates to a process for dyeing a mixture of two or more different fibre types with one or more dyes. The process according to the invention is characterized in that the mixture contains a portion of cationized cellulosic fibres. Furthermore, the invention relates to fibre blends obtainable by the process according to the invention.

1 - 20 . (canceled)  
   
   
       21 . A dyeing process comprising dyeing a mixture of two or more different fiber types with one or more dyes, wherein the fiber mixture comprises a portion of cationized cellulosic fibers.  
   
   
       22 . A dyeing process according to  claim 21 , wherein the cationized cellulosic fibers comprise cationic groups.  
   
   
       23 . A dyeing process according to  claim 21 , wherein the cationized cellulosic fibers are cationized viscose fibers.  
   
   
       24 . A dyeing process according to  claim 21 , wherein the mixture contains a portion of non-cationized cellulosic fibers.  
   
   
       25 . A dyeing process according to  claim 21 , comprising dyeing the mixture with a dye selected from the group consisting of a direct dye and a reactive dye.  
   
   
       26 . A dyeing process according to  claim 25 , wherein dyeing with the direct dye involves working at a salt concentration of 2 to 25 g/l.  
   
   
       27 . A dyeing process according to  claim 25 , wherein dyeing with the reactive dye involves working at a salt concentration of up to 80 g/l.  
   
   
       28 . A dyeing process according to  claim 21 , wherein the mixture is dyed with a wool dye and at least one other dye selected from the group consisting of a direct dye and a reactive dye.  
   
   
       29 . A dyeing process according to  claim 28 , wherein the wool dye is a metallized dye.  
   
   
       30 . A dyeing process according to  claim 21 , wherein the mixture contains a portion of non-cellulosic fibers.  
   
   
       31 . A process according to  claim 21 , wherein the fibre blend is dyed in the form of a yarn or a part of a yarn.  
   
   
       32 . A process according to  claim 21 , wherein the fibre blend is dyed in the form of a textile or a part of a textile.  
   
   
       33 . A process according to  claim 32 , wherein the fibre blend is dyed in the form of fabric so as to achieve a denim effect.  
   
   
       34 . A fibre blend produced by a process according to  claim 21 .  
   
   
       35 . A fibre blend comprising a portion of cationized cellulosic fibers and a portion of non-cationized cellulosic fibers, wherein (i) the portion of cationized cellulosic fibers and the portion of non-cationized fibers are coloured with the same dye and, (ii) there is a difference in the coloring intensity between the portion of cationized cellulosic fibers and the portion of non-cationized fibers.  
   
   
       36 . A fibre blend according to  claim 35 , wherein the difference in the coloring intensity amounts to 5 to 50 CIELAB units.  
   
   
       37 . A fibre blend comprising a portion of cationized cellulosic fibers and a portion of non-cationized cellulosic fibers, wherein the portion of cationized cellulosic fibers is colored with a wool dye, and the portion of non-cationized fibers is colored by another dye.  
   
   
       38 . A fibre blend according to  claim 35 , wherein the cationized cellulosic fibers incorporate the cationic groups.  
   
   
       39 . A fiber blend according to  claim 35 , wherein the cationized cellulosic fibers are cationized viscose fibers.  
   
   
       40 . A fiber blend according to  claim 35 , wherein the mixture contains a portion of non-cellulosic fibers.  
   
   
       41 . A fiber blend according to  claim 35 , which is in the form of a denim fabric.