POLYAMIDE CAPABLE OF BEING DEEPLY DYED AND METHOD FOR PREPARING THE SAME
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United States of America Patent
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Mar 23, 2017
app pub date -
Mar 14, 2016
filing date -
Sep 21, 2015
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Abstract
A polyamide capable of being deeply dyed and a method for preparing the same are revealed. The main material for polyamide is caprolactam. Amino groups are added to react during ring opening of caprolactam. Then polymerization is carried out to get polyamide in granular form or polyamide is made into fibers directly. The granules or fibers of polyamide prepared are not only capable of being deeply dyed, but also with lower dyeing temperature and better color fastness. Moreover, less time is required for dyeing and finishing processes due to simple manufacturing processes and fewer parameters involved. Thus the production cost is significantly reduced.
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