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US5629254A Substituted indenyl ring containing metallocene catalyst for propylene polymerization process 失效
用于丙烯聚合方法的含有茂金属催化剂的取代的茚基环

Substituted indenyl ring containing metallocene catalyst for propylene
polymerization process
摘要:
The novel transition metal catalyst of the invention is represented by the following formula (I): ##STR1## wherein M is a zirconium or hafnium; R.sup.1 is a hydrocarbon group of 2 to 6 carbon atoms, R.sup.2 is an aryl group of 6 to 16 carbon atoms; X.sup.1 and X.sup.2 are each a halogen atom; and Y is a divalent hydrocarbon group, a divalent silicon-containing group.
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