Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Reexamination Certificate
2007-08-27
2009-12-08
Lu, Caixia (Department: 1796)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
C502S103000, C502S104000, C502S120000, C502S152000, C526S129000, C526S160000, C526S943000
Reexamination Certificate
active
07629284
ABSTRACT:
This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, typically using a supported catalyst composition. In one aspect, this invention encompasses precontacting a metallocene with an olefin or alkyne monomer and an organoaluminum compound, prior to contacting this mixture with the acidic activator-support.
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Benham Elizabeth A.
Crain Tony
Hawley Gil R.
Jensen Michael D.
Martin Joel L.
Chevron Phillips Chemical Company LP
Lu Caixia
Merchant & Gould P.C.
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