用于从含尼龙6的多组分材料回收ε-己内酰胺的方法
By utilizing the nylon 6 pre-concentration, depolymerization, and purification sections in the factory process, and employing organic solvent extraction and hydrolysis polymerization, the problem of efficiently recovering high-purity ε-caprolactam from multi-component materials containing nylon 6 has been solved. This achieves high-yield and low-carbon-footprint recovery, and is applicable to a variety of multi-component materials, including multilayer membranes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- FUJIAN HENGXIN FIBER MATERIALS CO LTD
- Filing Date
- 2023-01-27
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are difficult to efficiently and economically recover high-purity ε-caprolactam from multi-component materials containing nylon 6, especially those with low to medium content. Furthermore, existing methods suffer from low recovery yields and high carbon footprints.
A factory process is employed, including nylon 6 pre-concentration, depolymerization, recovery and purification sections, to recover and purify ε-caprolactam through organic solvent extraction and hydrolytic polymerization, achieving high-yield recovery with a low carbon footprint using specific sequences and conditions.
It achieves high-yield recovery of high-purity ε-caprolactam, reducing production costs and carbon footprint. It is applicable to a variety of multi-component materials containing nylon 6, including multilayer membranes, meeting the needs of demanding applications such as textile fiber production.
Smart Images
Figure CN121378079B_ABST