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
2005-12-20
2005-12-20
Lorengo, J. A. (Department: 1755)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
C502S102000, C502S103000, C502S104000, C502S150000
Reexamination Certificate
active
06977235
ABSTRACT:
According to an embodiment, catalyst systems for polymerizing olefins include a catalyst comprising chromium and a cocatalyst comprising a substituted or unsubstituted non-transition metal cyclopentadienyl compound (Cp). The catalyst also comprises an inorganic oxide support. In an embodiment, methods of preparing a catalyst comprise contacting a support with chromium and with a non-transition metal Cp compound. In one embodiment, the support may be contacted with a solution comprising the non-transition metal Cp compound prior to entry into a reaction zone. In another embodiment, the activated catalyst and non-transition metal Cp compound may be added separately to the reaction zone.
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Benham Elizabeth A.
Collins Kathy S.
Jensen Michael D.
McDaniel Max P.
Secora Steven J.
Brown Jennine
Carroll Rodney B.
Chevron Phillips Chemical Company LP
Conley & Rose, P.C.
Huseman Cheryl L.
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