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US4431572A Retreating comminuted olefin polymerization catalyst with a titanium (IV) compound, a chlorocarbon and an ester 失效
用钛(IV)化合物,氯碳化合物和酯取代粉碎的烯烃聚合催化剂

Retreating comminuted olefin polymerization catalyst with a titanium
(IV) compound, a chlorocarbon and an ester
摘要:
A comminuted, supported polymerization catalyst for alpha-olefins comprises (A) an organoaluminum compound and (B) a solid titanium-containing component formed by (1) comminuting a solid reaction product comprising (a) at least one halogen-containing compound of titanium (IV); (b) at least one electron donor; and (c) at least one hydrocarbon-insoluble magnesium-containing compound; and (2) retreating such comminuted product with (a) at least one halogen-containing compound of titanium (IV); (b) at least one chlorocarbon; and (c) at least one organic acid ester.
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