ARAMID DOPE-DYED YARN AND MANUFACTURING METHOD THEREFOR
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United States of America Patent
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Aug 15, 2024
app pub date -
Feb 8, 2022
filing date -
Jun 9, 2021
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Abstract
The present invention relates to an aramid dope-dyed yarn and a manufacturing method therefor, the aramid dope-dyed yarn being manufactured by blend spinning a mixture dope comprising: a master batch dope comprising a pigment and a meta-aramid dope, which is obtained by polymerizing m-phenylene diamine (MPD) and isophthaloyl chloride (IPC); and the meta-aramid dope, and provided is an aramid dope-dyed yarn having less color deviation and excellent light fastness due to uniform pigment dispersion.
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