Witco Corporation

Hoechst Aktiengesellschaft

The State University of New York

Stefan Gurtzgen

Rolf Schrader

Jurgen Schneider

Ralf-Jurgen Becker

John J Eisch

Rainer Rieger

Jurgen Graefe

Dirk Kutschera

Wolfram Uzick

Karl H Muller

Ralf J Becker

Katrin MacKenzie

Novel bimetallic organometallic compounds, their synthesis and application in polymerization catalyst system based on combination of such novel bimetallic organometallic compounds with transition metal complexes is provided.

Synthesis of novel organometallics and their use in olefin polymerization

The invention relates to a process for preparing alkylaluminoxanes immobilized on inert support materials from alkylaluminum compounds and water, which is characterized in that the reactants are metered with the gas stream into a fluidized-bed reactor and the reaction product is fixed on the support directly from the gas phase.

Process for preparing aluminoxane on inert support material

The invention relates to a process for the preparation of alkylaluminoxanes immobilized on inert support materials, characterized in that alkylaluminoxanes present in the form of dispersions are fixed on inert support materials.

Process for the preparation of alkylaluminoxanes on inert support

The invention relates to a process for preparing solutions of oligomeric methylaluminoxanes, which contain trimethylaluminum in the free and/or complexed form, in hydrocarbons by partial hydrolysis of trimethylaluminum with water and to carrying out this process in a rotor/stator reaction machine. The product obtained is suitable for preparing highly active polymerization catalysts.

Process for preparing solutions of oligomeric methylaluminoxanes

It has surprisingly now been discovered that alkoxy-magnesium halides of the general formula ROMgX wherein R is an alkyl having from about 1 to 18 carbon atoms and X is a halide can be synthesized in an inert hydrocarbon in just one step process by reacting magnesium which has been preliminarily activated with small quantities (approximately 5 mol %) of magnesium alkyl with a substantially equimolar mixture of an alkyl halide and an alkanol. That is, the present invention provides a one step reaction process for preparing alkoxy-magnesium halides. This one step reaction process involves reacting magnesium metal which has been previously activated with a magnesium-alkyl compound, with an equimolar mixture of an alkyl halide and an alkanol. Yields in excess of 90% can be obtained by employing the inventive one step reaction process.

Method of preparing alkoxy-magnesium halides

The invention relates to a process for the preparation of aluminoxanes by addition of water to a solution of trialkylaluminum in an inert solvent, characterized in that the water required for the reaction is metered via a mixing nozzle into a static mixer, in particular a jet loop reactor.

Process for the preparation of aluminoxanes

The invention relates to a process for preparing trimethylaluminum from methylaluminum chlorides and sodium or magnesium which is characterized in that the components are reacted in a solids reactor.

Process for preparing trimethylaluminum by reacting methylaluminum

The invention relates to a process for preparing tri-methylaluminum from methylaluminum chlorides and sodium in a suspending agent, the reactants being subjected to the shearing action of a rotor-stator machine.

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Wuppertal, Germany

Stefan Gurtzgen