公开(公告)号：US20170210848A1

公开(公告)日：2017-07-27

申请号：US15327806

申请日：2015-07-22

申请人： Econic Technologies Ltd

发明人： Andy CHAPMAN ,  Anthony CHARTOIRE ,  James LEELAND ,  Michael KEMBER ,  Louis ADRIAENNSENS

IPC分类号： C08G64/34 ,  C07D285/00 ,  C07D487/08 ,  B01J31/22 ,  C07D257/02

摘要： The present invention relates to the field of polymerisation catalysts, and systems comprising said catalysts for polymerising carbon dioxide and an epoxide, a lactide and/or lactone, and/or an epoxide and an anhydride. The catalyst is of formula (I): Wherein M1 and M2 are independently selected from Zn(II), Cr(II), Co(II), Cu(II), Mn(II), Ni(II), Mg(II), Fe(II), Ti(II), V(II), Cr(III)-X, Co(III)-X, Ni(III)-X, Mn(III)-X, Fe(III)-X, Ca(II), Ge(II), Al(III)-X, Ti(III)-X, V(III)-X, Ge(IV)-(X)2 or Ti(IV)-(X)2. R3A is different from R3B; and/or at least one occurrence of E3, E4, E5 and E6 is different to a remaining occurrence of E3, E4, E5 and E6. A ligand, a process of asymmetric N-substitution of a symmetrical ligand and a process for the reaction of: (i) carbon dioxide with an epoxide; (ii) an epoxide and an anhydride; and/or (iii) a lactide and/or a lactone, in the presence of a catalyst is also described.