Cellulosic textile fibre
Number of patents in Portfolio can not be more than 2000
United States of America
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Issued Date -
Feb 13, 2025
app pub date -
Jan 5, 2023
filing date -
Jan 5, 2023
priority date (Note) -
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Abstract
The invention relates to a method for the manufacture of cellulose carbamate textile fibre, comprising the steps of dissolving cellulose carbamate in an aqueous alkaline medium to form a cellulose carbamate dope comprising zinc; spinning the cellulose carbamate dope into an alkaline aqueous spin bath in a spinning unit, to form filaments or filament tow; and stretching the filaments or filament tow to obtain cellulose carbamate fibres. In the spin bath, sodium hydroxide and sodium carbonate contents are maintained within pre-defined ranges by withdrawing and recycling a portion of the spin bath.
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