Merck Patent Gesellschaft MIT Beschrankter Haftung

Merck Patent Gmbh

Merck Patent Gesellschaft MIT Beschraenkter Haftung

Wilfried Wassermann

Herbert Schumann

Ludwig Pohl

Uwe Hartmann

Holger Jurgensen

Dietrich Erdmann

Meino Heyen

Max E Van Ghemen

Walter Kaminsky

Andrea Eisenhardt

Stefan Schutte

Birgit Corinna Wassermann

Sebastian Dechert

Markus Hummert

Andre Laban

Katharina Lange

Thomas Seuss

Kartin Köhler

Björn Heuer

The invention relates to the use of nitrogenous aluminium organyl complexes of general formula (I) as co-catalysts in heterogeneous polymerisation reactions of propene. In said formula: R, R', Rand R&#x2032; independently of one another represent branched or unbranched C-Calkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl or alkynyl; Rrepresents unsubstituted, monoalkylated or polyalkylated and/or monofluorinated or polyfluorinated aromatic hydrocarbons from group (II); Rand Rindependently of one another represent CH, CFoder C(R); m stands for 0, 1 or 2; n stands for 0, 1 or 2; o stands for 0 or 1, all independently of one another. Said systems exhibit improved characteristics in terms of activity and stereoselectivity in comparison to conventional co-catalysts such as AlEtand can act simultaneously as co-catalysts and stereoselectivity promoters 

Catalyst systems for Ziegler-Natta propene polymerisation

The invention relates to organometallic compounds of the elements aluminum, gallium and indium which are two-fold intramolecularly stabilized, and to the use thereof for the production of thin films and epitaxial layers by deposition from the liquid or solid phase.

Organometallic compounds

In a process for the production of thin films and epitaxial layers by gas-phase deposition, intramolecularly stabilized organometallic compounds are employed as a source of metal.

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Berlin, Germany

Wilfried Wassermann