Polyurethane urea elastic yarn dyeable with reactive dye and manufacturing method therefor
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United States of America Patent
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Jul 9, 2024
Grant Date -
Aug 3, 2023
app pub date -
Sep 25, 2020
filing date -
Jul 27, 2020
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Abstract
The present invention is directed to a reactive dye-dyeable polyurethane-urea elastic yarn including a reaction product of at least two polyols, a diisocyanate compound, a diamine chain extender, an amine chain terminator, and a diethylenetriamine compound, wherein one of the polyols is polyethylene glycol, which is included in an amount of 20 to 30.0 mol % based on the total amount of the polyols, a polyurethane-urea polymer includes 10 meq/kg to 45 meq/kg of primary amine ends, and the capping ratio (CR) of the diisocyanate to the polyols is 1.8 to 2.0.
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