Copolycarbonate and preparation method thereof

• Main Authors: LI CHENG, LIU XIANGJIA, LUO JIAHUI, WEI ZHITAO, WANG YAQING, LIU LONGYANG, GAO JUNMIN
• Format: Patent
• Language: Chinese; English
• Published: 19.05.2023
• 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 copolycarbonate and a preparation method thereof. The invention particularly relates to a novel copolymer with a molecular chain containing a biological polysaccharide chain segment and a polycarbonate chain segment and a preparation method thereof. The copolymer is novel in structure, a biological polysaccharide chain segment and a quaternary amine chain segment are introduced into a polycarbonate chain segment in a copolymerization mode, and the obtained copolycarbonate can remarkably improve the antibacterial performance, the biocompatibility and the impact resistance of conventional polycarbonate. The polycarbonate copolymer is prepared by copolymerizing the comonomer and the polycarbonate oligomer under the action of the catalyst, is simple to operate and easy to implement, and can be applied to industrial production. 本发明提供一种共聚碳酸酯及其制备方法。具体涉及分子链中含有生物多糖链段以及聚碳酸酯链段的新型共聚物及其制备方法。共聚物结构新颖，通过共聚的方式将生物多糖链段和季胺链段引入到聚碳酸酯链段中，得到的共聚碳酸酯能够显著提高常规聚碳酸酯的抗菌性能、生物相容性能以及抗冲击性能。本发明采用共聚单体与聚碳酸酯低聚物在催化剂作用下以共聚的方式制备