Method for improving the colour fastness of textile material made of plastics

Abstract

The invention relates to a method for improving the colour fastness of textile material made of plastics, whereby one or more vat dyes are applied to the textile material which undergoes heat treatment on its own or combined with other dyes/pigments. The material undergoes at least one additional heat treatment in connection with the colour thereof.

What is claimed is:  
     
         1 . A method of improving the colorfastness of textile material manufactured from synthetics in which the textile material is exposed to a heat treatment when applying one or more vat dyestuffs alone or in combination with other dyestuffs/pigments, 
 wherein the material is exposed to at least one additional heat treatment following its dyeing.    
     
     
         2 . The method as recited in  claim 1 , 
 wherein the heat treatment is performed in a dry atmosphere for a period of time from 0.1 second to 60 minutes at temperatures between 50° C. and 300° C.    
     
     
         3 . The method as recited in  claim 1 , 
 wherein the heat treatment is performed in the presence of moisture for 0.1 second to 60 minutes at temperatures between 50° C. and 300° C.    
     
     
         4 . The method as recited in one of claims  2  or  3 , 
 wherein the heat treatment is performed for a period of time from 0.1 second to 2 minutes.  
 
     
     
         5 . The method as recited in one of claims  2  or  3 , 
 wherein the heat treatment is performed between 100° C. and 250° C.  
 
     
     
         6 . The method as recited in one of claims  1  through  5 , 
 wherein the additional heat treatment is performed in treatment steps such as embossing, finishing or make-up of the material.  
 
     
     
         7 . The method as recited in one of claims  1  through  6 , 
 wherein the additional heat treatment is applied to a material containing microfibers.  
 
     
     
         8 . The method as recited in one of claims  1  through  6 , 
 wherein the additional heat treatment is applied to a material made entirely of microfibers.  
 
     
     
         9 . The method as recited in one of claims  7  through  8 , 
 wherein the additional heat treatment is applied to a material made of a nonwoven.  
 
     
     
         10 . The method as recited in one of claims  1  through  9 , 
 wherein the additional heat treatment is applied to a material made of PA and/or a blend of PA and PES fibers and/or microfibers.