申请人:Econic Technologies Ltd
公开号:US20170210848A1
公开(公告)日:2017-07-27
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 M
1
and M
2
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
. R
3A
is different from R
3B
; and/or at least one occurrence of E
3
, E
4
, E
5
and E
6
is different to a remaining occurrence of E
3
, E
4
, E
5
and E
6
. 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.
本发明涉及聚合催化剂领域,以及包括所述催化剂的系统,用于聚合二氧化碳和环氧化物,内酯和/或内酯,以及环氧化物和酸酐。催化剂的化学式为(I):其中M1和M2分别选自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或Ti(IV)-(X)2。R3A与R3B不同;和/或至少有一个E3、E4、E5和E6的出现与其余的E3、E4、E5和E6的出现不同。还描述了一种配体、对称配体的不对称N-取代的过程以及在催化剂存在下进行以下反应的过程:(i)二氧化碳与环氧化物;(ii)环氧化物和酸酐;和/或(iii)内酯和/或内酯。