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
2006-12-12
2006-12-12
Brunsman, David M. (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...
C502S117000, C502S150000, C534S015000, C556S009000, C556S013000
Reexamination Certificate
active
07148174
ABSTRACT:
The present invention describes a novel group of specific transition metal compounds, referred to as nonmetallocene compounds, and catalyst systems prepared therefrom. These catalyst systems which have become obtainable for the first time are suitable for the polymerization of olefins.
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Schottek Jörg
Schulte Jörg L.
Brunsman David M.
Celanese Ventures GmbH
Marshall & Gerstein & Borun LLP
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