一种交联型纤维素醚、其制备方法及其应用
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHONGQING LIHONG FINE CHEM
- Filing Date
- 2026-05-13
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional cellulose ether production processes struggle to simultaneously achieve high viscosity (>20000 mPa·s) and high degree of substitution (>1.50), as high alkali content leads to degradation of the cellulose backbone, affecting product performance.
A method for preparing cross-linked cellulose ethers was adopted, which involves alkalizing the cellulose ether with a mixture of sodium hydroxide, an organic alcohol aqueous solution, and a cross-linking agent to form a controllable covalent cross-linking network, thereby protecting the cellulose backbone and preparing cross-linked cellulose ethers with high substitution degree and high viscosity.
It achieves a balance between high degree of substitution (DS>1.50) and high degree of polymerization. The product has a viscosity of over 20,000 mPa·s at 1% solution, exhibiting ultra-high performance and suitable for high-end applications.
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