Basell Polyolefine Gmbh

Targor Gmbh

Aventis Research & Technologies Gmbh & Co Kg

Basell Polypropylen Gmbh

Bosell Polyolefine Gmbh

Roland Kratzer

Volker Fraaije

J&ouml;rg Schottek

Andreas Winter

Jörg Schottek

Markus Oberhoff

Wolfgang Anton Herrmann

David Fischer

Wolfgang Bidell

Carsten Bingel

Richard Walter Fischer

Ralph-Dieter Maier

Jürgen Suhm

Michael-Joachim Brekner

Cornelia Fritze

Gerhard Erker

Horst Weiss

Horst Weiβ

Nicola Stefanie Paczkowski

Nicola Stephanie Paczkowski

Naka Seidel

Gerald Kehr

Bodo Richter

Diana Schauer

Jorg Schottek

Nicola Paczkowski

Jurgen Suhm

The present invention relates to a process for preparing a catalyst solid for olefin polymerization which is obtainable by bringing

Preparation of supported catalyst systems

A process for the polymerization of olefins, in particular a process for the copolymerization of propylene with further olefins, is carried out in the presence of highly active catalyst systems comprising specifically selected metallocenes, in particular ones which bear different substituents in position 2 and position 4 on an indenyl ligand. Novel polypropylene copolymers can be obtained by this process.

Transition metal compound, ligand system, catalyst system and its use for the polymerization and copolymerization of olefins

The present invention relates to a process for preparing a supported cocatalyst for olefin polymerization, which comprises reacting A) a support bearing functional groups, B) triethylaluminum and C) a compound of the formula (I),(R)&#x2014;A&#x2014;OH)&#x2003;&#x2003;(I)where In addition, the invention relates to supported cocatalysts obtainable by such a process, to the use of the supported cocatalysts for preparing a catalyst system for the polymerization of olefins, to catalyst systems for the polymerization of olefins obtainable from the supported cocatalysts and to a process for the polymerization of olefins in which these catalyst solids are used.

Preparation of supported cocatalysts

The present invention relates to a process for preparing a catalyst composition for olefin polymerization, which comprises preparing a catalyst solid in a first step by bringing A) at least one support, B) at least one organic compound having at least one functional group containing active hydrogen, C) at least one organometallic compound and D) at least one organic transition metal compound into contact with one another, then bringing this catalyst solid into contact with E) at least one organoaluminum compound in a second step and then using this mixture for the polymerization without further work-up. In addition, the invention relates to catalyst system for the polymerization of olefins which comprise such catalyst compositions, to the use of the catalyst compositions or the catalyst systems for the polymerization of olefins and to a process of the polymerization of olefins.

Preparation of catalyst compositions having improved activity

Transition metal compound, ligand system, catalyst system and the use of the latter for polymerisation and copolymerisation of olefins

The present invention relates to a process for preparing a catalyst for olefin polymerization which is obtainable by bringing

Preparation of catalyst systems

A catalyst system comprising at least one metallocene, at least one cocatalyst, at least one support material and, if desired, further organometallic compounds is described. The catalyst system can advantageously be used for the polymerization of olefins and displays a high catalyst activity and gives a good polymer morphology without it being necessary to use aluminoxanes such as methylaluminoxane (MAO), which usually has to be used in high excess, as cocatalyst.

Catalyst system and the use thereof

Ligand systems containing indenyl structures, transition metal compounds of the metallocene type and catalyst systems comprising such transition metal compounds are described. The novel transition metal compounds can be used in the polymerization of olefins, in particular to give polyolefins having a low molar mass.

Transition metal compound, ligand system, catalyst system and its use for the polymerization of olefins

A boron-containing zwitterionic neutral transition metal compound which can advantageously be used for the polymerization of olefins is described. Here, the use of aluminoxanes, such as methylaluminoxane (MAO), as a cocatalyst can be dispensed with and a high catalyst activity and a good polymer morphology can nevertheless be achieved.

Zwitterionic transition metal compound which contains boron

Metallocene compound and polymerization catalyst comprising heterocyclic group

Transition metal compound, catalyst, its production and its use for the polymerization of olefins

Method for catalytic and selective oxidation of aromatic compounds

The present invention relates to a process for the preparation of organorhenium oxides from rhenium-containing compounds, where the rhenium-containing compound is reacted with a silylating agent and organylating reagent, and the rhenium-containing compound originates in particular from the residue from a spent organorhenium oxide catalyst or rhenium oxide catalyst.

Direct synthesis of organorhenium oxides from compounds containing rhenium

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Hofheim, Germany

Roland Kratzer