Fiber dyeing method using mixed fluid medium
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United States of America Patent
Stats
-
Jan 24, 2023
Grant Date -
Oct 21, 2021
app pub date -
Oct 25, 2018
filing date -
Oct 16, 2018
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention relates to a waterless fiber dyeing method using a mixed fluid medium, in which supercritical carbon dioxide fluid medium is mixed with steam to form a mixed fluid medium, so that the waterless fiber dyeing effect to natural fibers is improved. The method of the invention can effectively modify the hydrophobic supercritical carbon dioxide fluid medium and improve the polarity thereof, thereby increasing the solubility of polar dye under the dyeing condition and simultaneously expanding the fiber. Thus, the present invention significantly improves the dyeability and dyeing behavior of the hydrophilic fibers in supercritical carbon dioxide fluids. The invention has the advantages of simple process, convenient operation and low energy consumption, and avoids consuming a large amount of water resources and discharging pollutants in the traditional process, and has the characteristics of environmentally friendly and high efficiency.
First Claim
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International Classification(s)
- 2018 Application Filing Year
- D06P Class
- 192 Applications Filed
- 99 Patents Issued To-Date
- 51.57 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- D06P Class
- 0 % this patent is cited more than
- 2 Age
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