Targor Gmbh

Basell Polyolefine Gmbh

Celanese Chemicals Europe Gmbh

Basell Polypropylen Gmbh

Hans Bohnen

Cornelia Fritze

Helmut Bahrmann

Ernst Wiebus

Carl Dieter Frohning

Frank K&uuml;ber

Klaus Bergrath

Markus G&ouml;res

Kurt Schalapski

Wolfgang Greb

Frank Kueber

Michael Riedel

Wilfried Fenske

Robert Eckl

Richard Fischer

Wolfgang Zgorzel-Ski

Florian Rampf

Frank Kuber

Peter Wasserscheid

Thomas Klein

Roy Van Hal

Dietmar Hoff

Cornelia Fritz

Frank K{umlaut Over (u)}ber

Frank Küber

A supported catalyst system for polymerizing olefins comprising a) a support, b) a Lewis base of the formulaMRRR&#x2003;&#x2003;(I)

Supported catalyst system for the polymerization of olefins

A process for preparing sulfonated arylphosphines by reaction of arylphosphines with oleum, wherein, after reaction of the arylphosphines with oleum, the sulfonation mixture is firstly diluted with water, an inert gas stream is then passed through the diluted sulfonation mixture until SOis no longer liberated from the diluted sulfonation mixture and the latter is then worked up further in a customary manner and its use.

Process for preparing sulfonated arylphosphines

The present invention relates to a hydroformylation method by conversion of olefins or olefinically unsaturated compounds in the presence of at least one rhodium compound and in the presence of sulfonated arylphosphines in ionic liquids, which are based on a quaternary singly-charged ammonium ion or the equivalent of a multiply charged ammonium ion and organic sulfonates or sulfates.

Method for the production of aldehydes

A process for preparing solutions of sulfonated arylphosphines comprising reacting arylphosphines with oleum, diluting the sulfonation mixture with water, extracting the diluted sulfonation mixture with a solution of a water-insoluble organic solvent, reacting the organic phase with a solution of an inorganic base in water, adjusting the resulting aqueous solutin of sulfonated arylphosphines to a pH of up to 3 by addition of an acid, and passing an inert gas stream through the aqueous solution comprising sulfonated arylphosphines until sulfur is no longer liberated from the aqueous solution of sulfonated arylphosphines.

The invention relates to a process for preparing cyclohexanedicarboxylic esters (hexahydrophthalic diesters) by esterifying the corresponding benzenedicarboxylic acids and immediately hydrogenating the esterification mixture in the presence of nickel catalysts.

Process for preparing cyclohexanedicarboxylic esters

The invention relates to novel ionic liquids and to the production and use thereof. The novel ionic liquids are salts of sulphonated or carboxylated triesters of phosphorous acid as the anionic component and ammonium ions, which can be substituted with organic radicals, as the cationic component.

Ionic liquids and production and use thereof

The present invention relates to a process for preparing aldehydes by reaction of olefinically unsaturated compounds with carbon monoxide and hydrogen, wherein, during the process, rhodium is added in the form of a reaction product from the reaction of metallic rhodium and/or more than one rhodium compound with rhodium-complexing compounds and with carbon monoxide and hydrogen, the use of said reaction product in catalytic processes and also the preparation of a catalytic composition with addition of said reaction product.

Preparation of aldehydes

Catalyst system, method for the production thereof, and the utilization thereof for the polymerization of olefins

A catalyst system which can be used in the polymerization of propylene comprises at least one metallocene as a rac/meso isomer mixture, at least one organoboroaluminum compound, at least one passivated support, at least one Lewis base and, if desired, at least one further organometallic compound.

Catalyst system and its use for the polymerization of propylene

Specifically substituted metallocenes can be used in the polymerization of olefins. The novel compounds contain a cationic group as substituents and are suitable as constituents of a catalyst system for the polymerization of olefins.

Transition metal compound containing cationic groups which is used as an olefin polymerization catalyst component

A catalyst system comprises a) a cocatalytically active chemical compound A, b) at least one metallocene B and c) an aluminum compound C.

Catalyst system

The present invention relates to a catalyst system comprising metallocene, cocatalyst, support material and, if desired, further organometallic compounds. The catalyst system can advantageously be used for the polymerization of olefins, where the use of aluminoxanes such as methylaluminoxane (MAO), which usually has to be used in a large excess, as cocatalyst can be dispensed with and a high catalyst activity and good polymer morphology are nevertheless achieved.

Novel chemical compounds have an ionic structure and in combination with an organometallic transition metal compound form a catalyst system which is advantageously used for the polymerization of olefins.

Growing community of inventors

Moers, Germany

Hans Bohnen