Non-metallocene catalyst system

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

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Details

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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