Appeal No. 97-2098
Application No. 08/401,514
This is a decision on an appeal from the final rejection
of claims 1 through 10 and 12 through 16 which are all of the
claims remaining in the application.
The subject matter on appeal relates to a method for
prepolymerization of a supported catalyst system which
comprises prepolymerizing a highly active supported
metallocene catalyst system with olefin monomer feed in the
presence of hydrogen. Further details of this appealed
subject matter are set forth in representative independent
claim 1, the sole independent claim before us, which reads as
follows:
1. A method for prepolymerization of a supported catalyst
system comprising:
(a) combining:
(i) a supported metallocene catalyst system
having an activity greater than about 100,000
g/g/hr.;
(ii) at least one alpha olefin monomer feed; and
(iii) added hydrogen under prepolymerization
reaction conditions; and
(b) recovering a prepolymerized supported catalyst
system.
The reference relied upon by the examiner as evidence of
obviousness is:
2
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