Method of preparing antibacterial anti-yellowing ZnO antimony-free polyester fiber
US12338550B2 · kind B2 · utility
Assignees
- XINFENGMING GROUP CO., LTD.
- DONGHUA UNIVERSITY
- SHANGHAI HUIYI NEW MATERIALS TECHNOLOGY CO., LTD.
- NEW FENGMING GROUP HUZHOU ZHONGSHI TECHNOLOGY CO., LTD.
- HUZHOU ZHONGYUE CHEMICAL FIBER CO., LTD.
- SHAOXING HUIQUN NEW MATERIAL TECHNOLOGY CO., LTD.
- ZHEJIANG RUISHENGKE NEW MATERIALS RESEARCH INSTITUTE CO., LTD.
Inventors
Key dates
| Filing date | Jul 4, 2023 |
| Grant date | Jun 24, 2025 |
| Priority date | — |
| Expiry date | Jul 4, 2043 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD10B2401/13
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of preparing an antibacterial anti-yellowing ZnO antimony-free polyester fiber is provided. In direct spinning of antimony-free polyester melt, an anti-yellowing nano antibacterial agent is introduced into a polymerization process of antimony-free polyester to obtain the antibacterial anti-yellowing ZnO antimony-free polyester fiber; the anti-yellowing nano antibacterial agent is a surface-deposited or coated nano ZnO of a phosphate ester small molecule having a function of resisting thermal oxidative degradation, the phosphate ester small molecule is bound to the nano ZnO by van der Waals force, hydrogen bonding or covalent bonding, and the phosphate ester small molecule is a phosphate ester molecule with a molecular weight of less than 500 Da; the content of the nano ZnO in the antibacterial anti-yellowing ZnO antimony-free polyester fiber is not lower than 1.2 wt %, and the yellowing index Yi value of the antibacterial anti-yellowing ZnO antimony-free polyester fiber is not higher than 16.1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.