The present invention relates to metal/organic complexes of Formula (I), (II), (III), (IV), (V) and (VI) that are useful as catalysts for the polymerisation of carbonyl-containing or cyclic monomers. Typical polymerisation reactions are, for example, those of lactides. R is independently selected at each occurrence from the group comprising: hydrogen, hydrocarbyl and substituted hydrocarbyl, M is a Lewis-acidic metal, and, if present, X is any suitable counter ion.
本发明涉及式(I)、(II)、(III)、(IV)、(V)和(VI)的
金属/有机络合物,其可用作聚合含羰基或环状单体的催化剂。典型的聚合反应是
乳酸酯的聚合反应。R在每次出现时独立地选择自羟基、烃基和取代烃基的组,M是
路易斯酸性
金属,如果存在X,则为任何适当的对离子。