DIKETONATE COMPLEX-DERIVED CATALYSTS USEFUL FOR PREPARING POLYOLEFINS

摘要

An olefin polymerization catalyst may be prepared using a process including contacting a metal compound of the formula M(OR₁)₂ with a diketone to form a catalyst precursor having the general formula (I) or (II) wherein M is a Group IIA metal; O is oxygen; n = 1 or 2; R₁, R₂, R₃, and R₄ are the same or different; and are a hydrogen or a substituted or unsubstituted alkyl or aryl moiety having from about 1 to about 20 carbons atoms.