Patent ID: 7235110

Claim:
A method for dyeing a textile material, wherein the method comprises: a) preparing a dyebath including pigment particles of a vat dye or of a sulfur dye and a first additive causing the pigment particles to become electrically charged in a first polarity; b) preparing the textile material for dyeing by applying a second additive to the textile material to form a substrate on the textile material having an ionic charge with a polarity opposite the first polarity; c) immersing the textile material prepared in step b) in the dyebath prepared in step a) to cause the pigment particles to be ionically attracted to the substrate and retained thereon; d) chemically reducing the pigment particles retained on the substrate to form a reduced form of the pigment particles entering the textile material; and e) oxidizing the reduced form of the pigment particles to form pigment within the textile material.