Methods and systems to dye textile materials with dye blend compositions having differential dye exhaust rates

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United States of America Patent

PATENT NO 12060678
APP PUB NO 20230340726A1
SERIAL NO

17793257

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Abstract

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Processes and apparatus for dyeing a textile product are provided whereby an undyed textile product is introduced into a substantially anaerobic dyeing chamber having an oxygen content of less than 1000 ppm oxygen therein, and at least two dye mixtures having a differential dye exhaustion rate of at least 10% are applied onto the textile product within the substantially anaerobic dying chamber. Thereafter the dyed textile product may be exposed to an oxygen-containing atmosphere so as to oxidize the applied dyes. At least one of the dyes may have a dye exhaustion rate of at least about 25%, or even at least about 50%. The embodiments herein are especially adapted to dyeing of textile products whereby one dye in the at least two dye mixtures is a sulfur dye and another dye in the at least two dye mixtures is a leuco indigo dye.

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Patent Owner(s)

Patent OwnerAddress
INDIGO MILL DESIGNS INCRONDA NC 28670

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ethridge, M Dean Cary, US 5 6
Loy, Vince Cary, US 3 2
Malpass, Howard Cary, US 5 6
Puvvada, Sudhakar Cary, US 35 640
Tharpe, Ralph Cary, US 5 6

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