基于催化剂的对位酯快速合成工艺
By combining a deep eutectic solvent with a metal catalyst, a low-temperature homogeneous reaction environment was constructed, which solved the problems of high energy consumption and product quality in the synthesis of polyethylene terephthalate at high temperatures. This enabled efficient and low-energy esterification and polycondensation reactions, improving the overall performance of polyester products.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- LIAONING JINGLI IND CO LTD
- Filing Date
- 2025-12-30
- Publication Date
- 2026-07-17
AI Technical Summary
Existing polyethylene terephthalate (PET) synthesis processes require high temperatures, resulting in high energy consumption, long reaction times, and high temperatures can easily lead to an increase in diethylene glycol byproducts and polymer thermal degradation and yellowing.
A deep eutectic solvent system of choline chloride and diol was formed, and a metal catalyst was used to construct a low-temperature homogeneous reaction environment. Homogeneous polymerization of terephthalic acid was achieved through gradient concentration control and synergistic catalysis.
It significantly reduces reaction energy consumption, shortens reaction cycle, improves product quality, reduces diethylene glycol byproducts and polymer thermal degradation, and enhances reaction efficiency and product appearance quality.
Smart Images
Figure CN121736246B_ABST