Basell Polyolefine Gmbh

Basf Aktiengesellschaft

Hans-Robert-Hellmuth Damrau

Hans-Herbert Brintzinger

Patrik Müller

Carsten Bingel

Valerie Garcia

Christian Sidot

Christian Tellier

Jean-François Lelong

Franz Langhauser

David Fischer

Wolfgang Bidell

Gunther Schweier

Heike Gregorius

Carsten S&uuml;ling

Jürgen Suhm

Stéphanie Duchiron

Eric Huriez

Armin Weber

The invention relates to a process for preparing hydrogenated or partially hydrogenated, racemic ansa-metallocene complexes by reacting bridged or unbridged transition metal complexes with alkali metal compounds or alkaline earth metal compounds, heating the resulting reaction mixture to a temperature in the range from &#x2212;78 to 250&#xb0; C. and at least partially hydrogenating the reaction products in the presence of a suitable catalyst, to the corresponding hydrogenated or partially hydrogenated metallocenes and to their use as catalysts or as a constituent of catalysts for the polymerization of olefinically unsaturated compounds or as reagents or catalysts in stereoselective synthesis.

Preparation of partially hydrogenated rac-ansa-metallocene complexes

The invention relates to a process for preparing racemic metallocene complexes by reacting transition metal complexes with cyclopentadienyl derivatives of alkali metals or alkaline earth metals and heating the reaction mixture obtained in this way to a temperature in the range from &#x2212;78 to 250&#xb0; C., to the corresponding metallocene complexes themselves and to their use as catalysts or as constituents of catalysts for the polymerization of olefinically unsaturated compounds or as reagents or catalysts in stereoselective synthesis.

Racemoselective preparation of bridged metallocene complexes having unsubstituted or 2-substituted indenyl ligands

The invention relates to a process for preparing racemic metallocene biphenoxide complexes by reacting bridged transition metal complexes with cyclopentadienyl derivatives of alkali metals or alkaline earth metals and heating the reaction mixture obtained in this way to a temperature in the range from &#x2212;78 to 250&#xb0; C., to the corresponding metallocene biphenoxide complexes and to their use as catalysts or as constituents of catalysts for the polymerization of olefinically unsaturated compounds or as reagents or catalysts in stereoselective synthesis.

Racemoselective preparation of isolable ansa-metallocene biphenoxide complexes

Novel metallocene monohalides can be used in the polymerization of olefins.

Metallocene monohalogenides

A process for purifying metallocenes in which a sparingly soluble metallocene halide is converted into a readily soluble and readily crystallizable metallocene by replacement of at least one halide ligand by an alternative negatively charged ligand and the metallocene obtained in this way is subsequently purified by crystallization.

Method for the purification of metallocenes

Method for producing monoaryloxy-ansa-metallocenes

Racemic metallocene complexes are prepared by reacting bridged or unbridged transition metal complexes with cyclopentadienyl derivatives of alkali metals or alkaline earth metals and, if desired, subsequently replacing the aromatic ligands.

Method for selective production of racemic metallocene complexes

A process for preparing metallocene complexes of the general ##STR1## in which the substituents have the following meanings:

Preparation of bridged metallocene complexes

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Constance, Germany

Hans-Robert-Hellmuth Damrau