A subtraction-addition-based method for wool bioenzyme anti-felting finishing

By catalyzing the graft polymerization of phenolic small molecules with keratinase and horseradish peroxidase to form a cross-linked structure, the pollution and fiber damage problems in the anti-felting finishing of wool fiber products were solved, and an anti-felting effect with low felting rate, low damage intensity and good hand feel was achieved.

CN119711187BActive Publication Date: 2025-09-19JIANGNAN UNIV
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Patent Information

Application Number
CN202411754030.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-12-02
Publication Date
2025-09-19
Estimated Expiration
2044-12-02

AI Technical Summary

Technical Problem

In the anti-felting finishing of wool fiber products, the chlorination method causes serious pollution, the single protease method easily causes fiber damage, and the resin deposition method affects the feel, making it difficult to achieve an eco-friendly and long-lasting anti-felting finishing.

Method used

Keratinase is used to hydrolyze the wool scale layer, combined with horseradish peroxidase to catalyze the graft polymerization of phenolic small molecules to form a polyphenolic macromolecular cross-linked structure. The disulfide bond reconstruction is triggered by heating to achieve subtractive-additive anti-felting finishing.

Benefits of technology

It achieves anti-felting effects with low felting rate and low strength damage, while maintaining the fiber feel, meeting the requirements of eco-friendly finishing.

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Abstract

The present invention provides a subtractive-additive bioenzyme anti-felting finishing method for wool, which belongs to the technical field of textile dyeing and finishing. The method comprises the following steps: dissolving keratinase and sodium 2-cyclohexylaminoethanesulfonate in water, immersing the wool fiber product in the anti-felting treatment, and obtaining a subtractive anti-felting wool fiber product; dissolving a disulfide bond-containing phenolic small molecule and horseradish peroxidase in water, immersing the subtractive anti-felting wool fiber product in the anti-felting treatment, and obtaining a polyphenol macromolecule grafted wool fiber product; immersing the polyphenol macromolecule grafted wool fiber product in hot water, washing it with water, and drying it to obtain a subtractive-additive anti-felting wool fiber product. The finishing method of the present invention is ecologically safe, low-carbon, and green, significantly reduces the felting rate of the wool fiber product, has low strength loss on the wool fiber, improves the strength of the wool fiber, and has little effect on the hand feel; the subtractive-additive anti-felting wool fiber product obtained has low felting rate, low strength loss, and no deterioration in the hand feel.
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