公开(公告)号：US20070117936A1

公开(公告)日：2007-05-24

申请号：US11589939

申请日：2006-10-31

申请人： Tao Xiong ,  Xiaojiang Zhao ,  Xianhong Wang ,  Fosong Wang ,  Jiadong Min ,  Qinghai Zhou ,  Lijun Qiao

发明人： Tao Xiong ,  Xiaojiang Zhao ,  Xianhong Wang ,  Fosong Wang ,  Jiadong Min ,  Qinghai Zhou ,  Lijun Qiao

IPC分类号： C08F26/06

CPC分类号： C08F220/14 ,  C08F222/06 ,  C08F283/06 ,  C08G64/0216

摘要： The invention relates to a polymeric end-capping reagent for carbon dioxide-epoxide copolymers and a method for producing the same. The polymeric end-capping reagents provided by the invention are maleic anhydride copolymers and maleic anhydride terpolymers. The polymeric end-capping reagent for carbon dioxide-propylene oxide copolymers of the invention is produced by a radical solution copolymerization method, and has a number average molecular weight of Mn=4-6×104, a distribution index of 1.5-3.0. By using the polymeric end-capping reagent provided by the invention, the disadvantages of the small molecular end-capping reagent like volatilization during melting and precipitation on the melt surface during cooling, can be effectively overcome, moreover, the initial thermal decomposition temperatures of the carbon dioxide-propylene oxide copolymers end-capped with the polymeric end-capping reagents increase by about 30° C., as compared with that of the carbon dioxide-propylene oxide copolymer end-capped with “small molecular” maleic anhydride.

摘要翻译： 本发明涉及二氧化碳 - 环氧化物共聚物的聚合物封端剂及其制备方法。 本发明提供的聚合物封端剂是马来酸酐共聚物和马来酸酐三元共聚物。 本发明的二氧化碳 - 环氧丙烷共聚物的聚合物封端剂是通过自由基溶液共聚法制备的，其数均分子量为M n = 4-6×x10 4 ，分布指数为1.5-3.0。 通过使用本发明提供的聚合物封端剂，可以有效地克服小分子封端剂在冷却期间在熔融表面熔化和沉淀期间的挥发的缺点，此外， 与用“小分子”马来酸酐封端的二氧化碳 - 环氧丙烷共聚物相比，用聚合物封端剂封端的二氧化碳 - 环氧丙烷共聚物增加约30℃。