Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1995-05-04
1998-01-06
Nagumo, Mark
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526127, 526 64, 526943, 502108, 502109, C08F 4642
Patent
active
057055785
ABSTRACT:
Methods are disclosed for preparing a highly active solid metallocene-containing catalyst system and its use in the polymerization of olefins. The solid catalyst system is prepared by combining an aluminoxane with a metallocene having a substituent which has internal alkynyl unsaturation in a suitable liquid to form a liquid catalyst system, conducting prepolymerization of an olefin in the liquid catalyst system, and separating the resulting solid metallocene-containing catalyst system from the last reaction product mixture. Also polymerization of olefins using the inventive solid catalyst system is disclosed.
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Alt Helmut G.
Peifer Bernd
Welch M. Bruce
Bowman Edward L.
Nagumo Mark
Phillips Petroleum Company
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