对苯二甲酸-乙醇酸酯单体的制备方法以及可降解聚酯的制备方法
By using synergistic catalysis of nitric oxide radical catalysts and NO/NO2 mixed gas, the problems of high cost and difficult purification in the preparation of terephthalic acid-glycolate monomers have been solved, realizing efficient and safe industrial production. The prepared monomers are used to prepare biodegradable polyesters.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG HENGYI PETROCHEMICAL RES INST CO LTD
- Filing Date
- 2026-04-23
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies for preparing terephthalic acid-glycolate monomers suffer from high costs, difficult purification, and unsuitability for industrial production. Furthermore, glycolic acid monomers have poor thermal stability, making them difficult to use directly at high temperatures for the synthesis of biodegradable polyesters.
The catalytic oxidation of terephthalic acid-glycolate monomers is achieved by using a nitrogen-oxygen radical catalyst and a NO/NO2 mixed gas. After the reaction is completed, the monomers are cooled and precipitated, making them easy to purify and separate.
It achieves high conversion rate, high selectivity and stability, the process is safe and reliable, suitable for industrial production, and the prepared terephthalic acid-glycolate monomer is easy to purify and can be used to prepare biodegradable polyesters.
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Figure CN122071412B_ABST
Abstract
Citation Information
Patent Citations
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