申请人:ECONIC TECH LTD
公开号:WO2019048878A1
公开(公告)日:2019-03-14
The present invention relates to a polymerisation process for the reaction of (a) carbon dioxide with an epoxide; and/or (b) an anhydride with an epoxide. The process is carried out in the presence of a chain transfer agent and a catalyst of formula (I): Formula (I) The catalyst comprises groups Y1 and Y2 which are independently a neutral or anionic donor ligand group capable of donating a lone pair to the mental M2. M1 and M2 are independently selected from Zn(ll), Cr(ll), Co(ll), Cu(ll), Mn(ll), Mg(ll), Ni(ll), Fe(ll), Ti(ll), V(ll), Cr(lll), Co(lll), Mn(lll), Ni(lll), Fe(lll), Ca(ll), Ge(ll), Al(lll), Ti(lll), V(lll), Ge(IV), Y(lll), Sc(lll) or Ti(IV). The present invention also relates to a catalyst, and polymers produced by the process using the catalyst and higher polymers such as polyurethanes produced therefrom.