Dye discharge reagent for inkjet compositions
AssigneeKornit Digital Ltd.
InventorJacob MOZEL
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Abstract
A process of in situ forming a dye discharge reagent on at least a portion of surface of a dyed substrate, effected by applying two or more compositions comprising reactants on the substrate, such that the reactants undergo a chemical reaction on the substrate to form the reagent is provided herein, as well as a method for dye discharging a dyed substrate using the process of in situ forming a dye discharge reagent, and a dye discharge composition comprising said dye discharge reagent. In some embodiments of the invention, the reactants are thiourea and a peroxide, and the dye discharge reagent is formamidine sulfinic acid (FSA).
Claims31
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A method of discharging a dye in a dyed substrate, comprising contacting at least a portion of said substrate with a first composition and a second composition, wherein said first composition comprises a first reactant and said second composition comprises a second reactant, said first reactant and said second reactant undergo a chemical reaction to form a dye discharge reagent in situ on the substrate, thereby discharging the dye in the substrate with said dye discharge reagent, and wherein said contacting is afforded by separately applying said first composition and said second composition on said portion.
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11-12. (canceled)
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20-22. (canceled)
A kit comprising a packaging material and the inkjet dye discharge composition that comprises a first composition and a second composition, wherein said first composition is an aqueous solution of thiourea and said second composition is an aqueous solution of a peroxide.
30-31. (canceled)
A process of inkjet printing an image on at least a portion of a dyed textile substrate, the process comprising digitally applying onto at least a portion of a substrate a inkjet dye discharge composition that comprises a first composition and a second composition, and digitally applying substantially over said portion a translucent colored composition, thereby forming the image, wherein said first composition is an aqueous solution of thiourea and said second composition is an aqueous solution of a peroxide.
Dependencies are inferred from the claim text.