Process for indigo dyeing of wool and wool blends
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United States of America Patent
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May 29, 2012
Grant Date -
May 17, 2007
app pub date -
Sep 18, 2003
filing date -
Sep 18, 2003
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Abstract
A process for indigo dyeing of wool and wool blends comprising the steps of subjecting the wool and wool blends to a step of pretreatment by impregnation with a shrink resistance agent, subjecting the pretreated wool and wool blend yarns to the step of indigo dyeing and post dyeing, wherein the step of dyeing and post dyeing includes a single step or a plurality of steps of impregnation of the pretreated wool and wool blends in an indigo dye bath followed each time by the step of oxidation.
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