Method for dyeing fabric materials with indigo, other vat...

Bleaching and dyeing; fluid treatment and chemical modification – Process of printing permanently on substrate – other than... – Vat dye or sulfur dye – e.g. – quinonic or indigoid reducible...

Reexamination Certificate

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Details

C008S650000, C008S652000, C008S653000, C008S554000, C008S557000, C008S558000, C008S637100, C008S661000, C008S930000

Reexamination Certificate

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11273354

ABSTRACT:
A method for surface dyeing a range of textile materials, in the form of yarn, fabric, or garments, includes: a) preparing a dyebath including dye particles and an additive, such as an anionic acrylic copolymer, causing the particles to become charged; b) preparing the textile material by applying an additive, such as a cationic polyamide, forming a substrate with a charge attracting the particles, c) immersing the textile material in the dyebath; d) chemically reducing the dye particles retained on the textile material to a leuco form; and e) oxidizing the dye material.

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