Method of utilizing dinuclear amine imine magnesium complex to catalyze lactide polymerization

• Main Authors: YAO WEI, YOU QI, YU GUANGFU, SUN FENGGANG, DUN AISHE, ZHANG HAIDONG, WANG HONGBIN
• Format: Patent
• Language: Chinese; English
• Published: 14.05.2019
• 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 discloses a method of utilizing dinuclear amine imine magnesium complex to catalyze lactide polymerization. The method includes: taking the dinuclear ammine imine magnesium complex as acatalyst and lactide as a raw material to catalyze lactide polymerization without water and oxygen and under gas protection to obtain polylactide. The dinuclear amine imine magnesium complex which isown-developed is taken as the catalyst for lactide ring-opening polymerization reaction, the catalyst is simple in preparation method, low in cost, diverse in structure and high in catalytic activity,three-dimensional selectivity and reaction rate, no cocatalyst is needed, and metal center magnesium is coordinated with N, N atoms of ligand, so that the catalyst is quite ideal. Polymer obtained byreaction is narrow in molecular weight distribution, controllable in molecular weight and high in yield and selectivity. 本发明公开了一种利用双核胺亚胺镁配合物催化丙交酯聚合的方法，以双核胺亚胺镁配合物为催化剂，以丙交酯为原料，在无水无氧和气体保护下催化丙交酯聚合，得聚丙交酯。本发明以自行研发的双核胺亚胺镁配合物作为催化剂进行丙交酯