Pigment-Dyeing Method

Abstract

Pigment-dyeing method for individualised textile fibres or textile supports obtained from the fibres consisting of pre-treating the fibres or the support with at least one polymer, then dying the thus pre-treated fibres or support using pigments, characterised in that the polymer is a vinylamine-based (co)polymer.

1 . A pigment-dyeing method for individualised textile fibres or textile supports obtained from the fibres consisting of pre-treating the fibres or the support with at least one polymer, then dying the pre-treated fibres or support using pigments, characterised in that the polymer is a vinylamine-based (co)polymer. 
     
     
         2 . The method according to  claim 1 , characterised in that the vinylamine-based (co)polymer results from a total or partial hydrolysis of a N-vinylformamide (co)polymer. 
     
     
         3 . The method according to  claim 1 , characterised in that the vinylamine-based (co)polymer results from a Hofman degradation reaction carried out on a base (co)polymer comprising acrylamide or derivatives. 
     
     
         4 . The method according to  claim 3  characterised in that the base (co)polymer further comprises at least one polyfunctional component comprising at least three heteroatoms that each have at least one mobile hydrogen atom. 
     
     
         5 . The method in accordance with  claim 4 , characterised in that the polyfunctional component is selected from the group consisting of polyethyleneimine, polyamine, and polyallylamine. 
     
     
         6 . The method according to  claim 1 , characterised in that the (co)polymer represents from 1 to 10% in weight of the material to be dyed. 
     
     
         7 . The method according to  claim 1 , characterised in that the polymer/pigment ratio is between 1:10 and 10:1. 
     
     
         8 . The method according to  claim 1 , characterised in that the pigment represent 0.1% to 10% in weight of the material to be dyed. 
     
     
         9 . The method according to  claim 1 , characterised in that the weight ratio between total dry material and total solution is between 1:5 and 1:40. 
     
     
         10 . The method according to  claim 1 , characterised in that the (co)polymer represents from 3 to 8% in weight of the material to be dyed. 
     
     
         11 . The method according to  claim 1 , characterised in that the polymer/pigment ratio is between 3:1 and 7:5. 
     
     
         12 . The method according to  claim 1 , characterised in that the polymer/pigment ratio is equal to 5:3. 
     
     
         13 . The method according to  claim 1 , characterised in that the weight ratio between total dry material and total solution is between 1:10 and 1:30.