Supported olefin polymerization catalyst

Details Supported olefin polymerization catalyst Supported olefin polymerization catalyst

2003-12-03

2008-10-28

Rábago, Roberto (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S113000, C526S114000, C526S118000, C526S119000, C526S127000, C526S129000, C526S134000, C526S160000, C526S161000, C526S172000, C502S152000, C502S154000, C502S155000, C502S162000, C502S167000

Reexamination Certificate

active

07442750

ABSTRACT:
Supported catalyst systems are provided comprising (a) a transition metal compound, (b) an activator comprising (iii) an aluminoxane or (iv) a Group lilA metal or metalloid compound, and (c) a support material comprising an inorganic metal oxide, inorganic metal halide or polymeric material or mixtures thereof characterised in that the support material has been pretreated with a source of a transition metal atom. The preferred transition metal compounds are metallocenes and the source of the transition metal atom is typically a ferrous or cupric metal salt. The supported catalyst systems show improved activity and also may reduce fouling in gas phase fluidised bed processes.

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