Application of non-heavy metal organic compound in catalysis of DMT method for synthesis of polyester, DMT method heavy metal-free polyester and preparation method of DMT method heavy metal-free polyester

• Main Authors: NI YANPENG, SHAN YINGYING, CAO XING, WANG YUZHONG, YI FAN, LIU YUN
• Format: Patent
• Language: Chinese; English
• Published: 19.07.2024
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention provides application of a non-heavy metal organic compound in catalysis of DMT method synthesis of polyester, DMT method heavy metal-free polyester and a preparation method of the DMT method heavy metal-free polyester, the non-heavy metal organic compound containing polymerization active hydroxyl is applied to DMT method preparation of polyester, hydroxyalkyl in the compound can form a hydrogen bond with a DMT/dihydric alcohol reaction system, and the hydroxyl group can form a hydrogen bond with the DMT/dihydric alcohol reaction system. The affinity of the compound and the reaction system is improved, the reaction potential energy is reduced, the reaction time is greatly shortened, and the catalytic reaction can still be performed at a lower temperature. At the conventional temperature of DMT transesterification, the catalytic effect can be achieved when the addition amount is 0.01% or above, and the high transesterification rate can be achieved within a short time. 本发明提供一种非重金属有机化合物在催化DMT法合成聚酯中的