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本文首次报导了氧联双金属有机盐[(RO)_(n-1)MO]_xM′(OR′)_(m-x)用做二氧化碳和环氧丙烷共聚的催化剂。实验结果表明,端锌型化合物的催化活性大于端铝型的,而又以醇盐为最好。催化效率和对交替共聚的选择性已达到典型的二乙基锌—水体系的水平。且又有较稳定、易操作等优点。
This paper reports for the first time that oxyborane bimetallic organic salt [(RO) _ (n-1) MO] _xM ’(OR’) _ (m-x) is used as a catalyst for the copolymerization of carbon dioxide and propylene oxide. The experimental results show that the terminal zinc compound is more active than the terminal aluminum, and the alkoxide is the best. The catalytic efficiency and selectivity to alternating copolymerization have reached the level of a typical diethylzinc-water system. And there are more stable, easy to operate and so on.