Process for the manufacture of polyamide yarns dyeable in melange shades
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United States of America Patent
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Feb 25, 2003
Grant Date -
Oct 3, 2002
app pub date -
Mar 2, 2001
filing date -
Feb 1, 2001
priority date (Note) -
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Abstract
A process for the manufacturing of a differentially dyeable yarn includes the steps of: a) producing two polymers having a different concentration of amine end-groups; b) spinning yarns from said two polymers; and c) producing a yarn by intermingling said spun yarns made from said two polymers, in texturing, or draw twisting, or draw winding processes.
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