A method for preparing bio-based polyurethane elastic fiber
By using sucrose and glycerol to prepare polyether polyols, and synthesize polyurethane with polyisocyanate, combined with dry spinning technology, the problem of poor performance of bio-based polyurethane elastic fibers is solved, and fiber performance improvement and cost optimization are achieved.
Patent Information
- Application Number
- CN202410620543.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2044-05-20
AI Technical Summary
The prior art is difficult to prepare bio-based polyurethane elastic fibers through green, environmentally friendly and renewable raw materials, and the difference in performance of bio-based raw materials and petrochemical-based materials leads to insufficient or unstable reactions, resulting in reduced fiber performance and difficult to meet the use requirements.
Using sucrose and glycerol as starting agents, polyether polyols are prepared through specific molar ratios and reaction conditions, and polyurethane is synthesized with polyisocyanate, and appropriate amounts of chemical foaming agent and nucleating agent are added to prepare bio-based polyurethane elastic fibers through dry spinning technology.
The performance improvement of bio-based polyurethane elastic fibers is achieved, the elasticity and durability of the fibers are ensured, and the cost and performance advantages are taken into account, and the problem of insufficient or instability caused by the performance differences between bio-based raw materials and petrochemical-based materials is solved.