Method for dyeing fabric materials with indigo, other vat dyes, and sulfur dyes
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United States of America Patent
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Jun 26, 2007
Grant Date -
Mar 23, 2006
app pub date -
Nov 14, 2005
filing date -
Feb 18, 2004
priority date (Note) -
Expired
status (Latency Note)
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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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