Merck Patent Gesellschaft MIT Beschrankter Haftung

Merck Patent Gesellschaft

Merck Patent Gmbh

Schering Aktiengesellschaft

Merck Patent Gesellschaft MIT Beschraenkter Haftung

Planar Systems, Inc.

Merck Patent Gesellschaft MIT Beschr&auml;nkter Haftung

Herbert Schumann

Ludwig Pohl

Eike Poetsch

Uwe Hartmann

Wilfried Wassermann

Holger Jurgensen

Dietrich Erdmann

Meino Heyen

Karin Weiss

Walter Kaminsky

Stefan Schutte

Birgit Corinna Wassermann

Hans-Ludwig Hirsch

Max E Van Ghemen

Andrea Eisenhardt

Manfred Arnold

Karl-Heinz Thiele

Sebastian Dechert

Markus Hummert

Andre Laban

Werner Krause

Martin Hostalek

Katrin Koehler

Erkki Soininen

Jana Knorr

Runar T&ouml;rnqvist

Mario Glanz

Gitte H&auml;rk&ouml;nen

Jens Eichhorn

Kartin Köhler

Sebastiain Dechert

Kirsi Vasama

Thomas Seuss

Michael Frick

Fike Poetsch

Katharina Lange

Corinna Wassermann

Christian Marschall

Thomas Metzner

Ulf D&uuml;michen

Elmar Hecht

Eva Maria Auth

Bernd Heymer

Björn Heuer

Katrin K&ouml;hler

Tomi Kervinen

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

Disclosed are compounds of formula (I) which compounds are useful as cocatalysts in olefinic polymerisation reactions, e.g., as Ziegler-Natta catalysts.

Oxygen-containing organoaluminium complexes as cocatalysts

Aluminum alkyl complexes as cocatalysts

Described are catalyst systems having aluminium alkyl complexes of the formula (I) described herein applied to magnesium chloride, SiO or SiO in combination with MgCl as support in the presence of titanium halides or vanadium halides and internal and, if desired, external donors act both as cocatalysts and as stereoselectivity promoters in heterogeneous polymerizations of &agr;-olefins. Also described are polymerization methods using these catalyst systems.

Catalyst system for the Ziegler-Natta polymerization of olefins

The present invention concerns a method of growing a cerium-doped SrS phosphor layer by the Atomic Layer Epitaxy-method. According to the invention an organometallic cerium compound containing at least one cyclopentadienyl type ligand is used as a precursor for the dopant cerium. The cyclopentadienyl type cerium compounds can be used as ALE precursors at about 400&deg; C. substrate temperatures without any observable thermal decomposition during processing.

Method of growing thin film electroluminescent structures

Bismuth dendrimers, processes for their preparation, and their use as

Coordination catalyst systems comprising intramolecularly stabilized

The invention relates to the use of cyclic organometallic compounds as components in coordination catalyst systems, to corresponding coordination catalyst systems and also to processes for the preparation of polymers by coordination polymerization and of unsaturated hydrocarbons by catalyzed metathesis of alkenes and alkynes using such coordination catalyst systems.

Coordination catalyst systems

Boron-containing organic group-V compounds useful for gas phase

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.

Growing community of inventors

Berlin, Germany

Herbert Schumann