Special sizing agent for rayon and its preparation process and sizing process

By combining hard monomers, soft monomers, and highly polar monomers, and using a hard-core, soft-shell latex particle structure, the problems of curling, insufficient abrasion resistance, and poor softness in rayon sizing processes have been solved. This has resulted in a sizing effect with high coverage and low penetration, thereby improving weaving efficiency and fabric quality.

CN122128908APending Publication Date: 2026-06-02WUJIANG TIANLI POLYMER
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUJIANG TIANLI POLYMER
Filing Date
2026-03-27
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing rayon sizing agents suffer from problems such as curling, insufficient abrasion resistance, poor softness, and insufficient adhesion during the sizing process, making it difficult to meet the weaving requirements of high-end rayon fabrics. Furthermore, they also suffer from problems such as unreasonable auxiliary agent formulation, poor sizing film elasticity, and difficulty in desizing, which affect weaving efficiency and fabric quality.

Method used

By employing a synergistic combination of hard monomers, soft monomers, and highly polar monomers, combined with a hard-core, soft-shell latex particle structure, and supplemented with hydrophobically modified hydroxypropyl methylcellulose and a precise penetrant, a rigid-flexible slurry film is formed through uniform film formation, which enhances the adhesion and flexibility of cellulose fibers and avoids excessive permeation.

Benefits of technology

It achieves a high-coverage, low-permeability sizing effect, resulting in smooth, non-curling, soft, and wear-resistant yarns that are durable and resistant to damage. It also boasts a high desizing rate and is environmentally friendly, thus improving weaving efficiency and fabric quality.

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Abstract

The application relates to the field of textile sizing agents, and particularly discloses a special sizing agent for rayon, a preparation process thereof and a sizing process. The raw materials comprise a polymer monomer component, a functional additive component and a water-based medium; the polymer monomer component comprises, in terms of weight parts, 80-140 parts of hard monomers, 10-40 parts of soft monomers, 30-50 parts of strong polar monomers and 5-15 parts of hydrophilic functional monomers. After being sized by the sizing agent, the rayon is not prone to rolling, and has excellent flexibility and wear resistance.
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