Ticona Gmbh

Celanese Ventures Gmbh

Tim Dickner

Jörg Schottek

Jens Ehlers

Jörg Ludwig Schulte

Jens Panitzky

Jorg Schottek

Iris Küllmer

The present invention relates to a process of manufacturing high, very high, and ultra high molecular weight polymers comprising predominantly ethylene monomers. Ethylene is reacted in the presence of a catalyst system to produce a polymer having a viscosimetrically-determined molecular weight of at least 0.7&#xd7;10g/mol. The catalyst system generally includes a bridged metallocene catalyst compound, optionally with a co-catalyst. The catalyst is characterized by a zirconium dichloride central functionality and a dimethyl silandiyl bridge between five-membered rings of indenyl groups. Both rings of the metallocene compound are substituted at the 2-position with respect to the dimethyl silandiyl bridge with a C-Ccarbonaceous group.

Process for manufacturing high to ultra high molecular weight polymers using novel bridged metallocene catalysts

The present invention relates to a process for manufacturing ultra high molecular weight polymers by means of polymerization and co-polymerization of olefins using novel bridged metallocene catalysts as well as their catalyst systems.

Process for manufacturing ultra high molecular weight polymers using novel bridged metallocene catalysts

The invention relates to a method for producing special transition metal compounds, to novel transition metal compounds and to the use thereof for polymerizing olefins.

Covalently fixed nonmetallocenes, process for preparing them and their use for the polymerization of olefins

The present invention relates to a process for preparing specific transition metal compounds, novel transition metal compounds and also catalyst systems and their use for the homo- or copolymerization of olefins.

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Frankfurt-am-Main, Germany

Tim Dickner