【摘要】 以1,3,5-三羟乙基异氰脲酸酯(THEIC)为引发剂、三氟化硼乙醚络合物为催化剂,环氧化合物为环单体,进行了阳离子开环聚合反应的研究。发现THEIC与环氧单体可在非均相体系中平稳地进行阳离子开环聚合反应。在THEIC体系,就链引发而言,环氧氯丙烷的大于环氧丙烷、丁基醚环氧乙烷。调整环单体加料次序就可以获得嵌段共聚醚多元醇。更多还原

【Abstract】 The cationic ring-opening polymerizations of epoxide based monomers were studied using tris(2-hydrooxyethyl) isocyanurate(THEIC) as initiator and trifluoroboron plus ether complex system as catalyst. It was found that the ring opening polymerizations of epoxide based monomers with THEIC can be carried out in a heterogeneous medium smoothly.However,using THEIC initiator,the reaction rate for epichlorohydrin is faster than that of propylene oxide and 2-butoxyxirane,respectively.By simply adjusting the monomer feeding sequence,the block poly(ether glycol) copolymers containing isocyanurate segments can be prepared successfully.更多还原