Isosorbide polycarbonate and preparation method thereof

The invention discloses isosorbide polycarbonate and a preparation method thereof, relates to the technical field of polyester, and aims to solve the problems that the existing catalyst can cause the reaction accompanied by a large amount of side reactions, so that the color of the isosorbide polycarbonate is yellow, and the yield is reduced. The preparation method of the isosorbide polycarbonate comprises the following steps: under the action of a tin compound catalyst, isosorbide and diphenyl carbonate are used as raw materials, and melt transesterification and condensation polymerization are sequentially performed to obtain the isosorbide polycarbonate, and the tin compound catalyst comprises a metal oxide and a tin catalyst. The preparation method is used for preparing the isosorbide polycarbonate. The isosorbide polycarbonate and the preparation method provided by the invention are used for improving the color and luster of the isosorbide polycarbonate. 本发明公开一种异山梨醇型聚碳酸酯及制备方法，涉及聚酯技术领域，以解决现有的催化剂会导致反应伴有大量副反