The polymerization of ethylene oxide was carried out with catalysts of many components whose main components were organometallic compounds.

采用有机金属化合物为主体的多组分催化剂进行环氧乙烷的聚合试验。

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At present, block copolymers containing PCL and PEG chains are mainly prepared by active ionic polymerization using traditional chemical catalysts, some toxic organometallic compounds.

然而，两亲嵌段共聚物的传统的制备方法是有机金属催化剂催化的活性离子聚合法，故产物中难免会残留有毒的有机金属催化剂。

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"If scientists had used scientific theory to guide them, the pyridylamine catalysts would likely never have been discovered, " says Vincent Murphy, an organometallic chemist at Symyx.

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