ES401160A1 - New differential dye procedure through increase of the chemical reactivity of a protein material, either textile or not. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

"New method of differential dyeing by increasing the chemical reactivity of a protein material whether textile or not," characterized in that the protein material is subjected in any of its stages, fiber, yarn and/or tissue, to a treatment, both in an aqueous medium, as an organic solvent, in the presence or absence of surfactants, with the amine, at the pH value of the amine solution (depending on the concentration of some of the amine compounds described, in the bath), at a temperature that can vary between 0ºC and 100ºC, and for a time comprised between one minute and three hours, followed by a wash with water. The fiber thus treated is chemically modified in such a way that it will have a greater chemical reactivity against any type of dyes, thus being ready to be subjected to the desired dyeing process. This greater reactivity that has been conferred, makes, that of making a tincture of the treated protein material, together with protein material not treated either with reactive dye, acid, chromium, metal-complex, or in general any type of dyes used to dye protein material, following the normal conditions of dyeing, the first acquires a different coloration from the one presented by the second, varying not only the tone, but also the hue, of the resulting color on both types of substrates. (Machine-translation by Google Translate, not legally binding)