Basell Polyolefine Gmbh

Basf Aktiengesellschaft

Other

Max-planck-gesellschaft Zur F&#xf6;rderung Der Wissenschaften E. V.

Albert-ludwias-universität Freiburo

Albert-ludwigs-universitat Freiburg

Heike Gregorius

David Fischer

Carsten S&uuml;ling

Franz Langhauser

Marc Oliver Kristen

Roland Hingmann

Volker Fraaije

Wolfgang Bidell

Ursula Rief

G&uuml;nther Schweier

Matthias Koch

Ulrich Moll

Markus Klapper

Joachim R&ouml;sch

Martin Stork

Manfred Lutringshauser

Shahram Mihan

Dieter Lilge

Bernhard Rieger

Bernd Bachmann

Rolf Mulhaupt

Walter Dobler

Hans-Herbert Brintzinger

Klaus Müllen

Jörg Schottek

Peter Eibeck

Maria Silvia Tonti

Wolfgang Micklitz

Stefan Seelert

Rolf Mülhaupt

Hans-Robert-Hellmuth Damrau

Ulf Dietrich

Klaus M&uuml;llen

Hans-Joachim M&uuml;ller

John Russell Grasmeder

Klaus-Dieter R&uuml;mpler

Iris Kuellmer

J&uuml;rgen Matth&auml;us Wagner

Armin Weber

Fan Zhong

Bodo Richter

A nano platelet gibbsite treated with compound of formula (OR)Si&#x2014;Ror of formula R&#x2014;COOH wherein Requal to or different from each other is a C-Calkyl radical; Ris a C-Chydrocarbon radical and Ris a C-Chydrocarbon radical is used as a catalyst support.

Supported catalyst system

The present invention relates to a process for preparing a catalyst solid for olefin polymerization, comprising a finely divided support, an aluminoxane and a metallocene compound, which comprises: a) firstly combining the finely divided support with the aluminoxane and subsequently b) adding the reaction product of a metallocene compound with at least one organometallic compound to the modified support, catalyst solids obtainable by this process, catalyst systems comprising these catalyst solids, their use for the polymerization of olefins and a process for the polymerization of olefins.

Preparation of supported catalyst systems containing reduced amounts of aluminoxanes

The present invention relates to pulverulent solids obtainable by reaction of a metal alkyl compound of a divalent or higher-valent metal and a finely divided support which on its surface bears functional groups which can form a chemical bond between the metal atom of the metal alkyl compound and the surface of the support, wherein the particles of the finely divided support have particle diameters of less than 1000 nm and less than 5% by weight of the metal alkyl compound is extractable in a single extraction of the pulverulent solid with 20 ml of heptane per gram of solid at 50&#xb0; C. In addition, the invention relates to a process for preparing the pulverulent solids, a catalyst composition for the polymerization of olefins which comprises the pulverulent solids and polymerization processes using the catalyst composition.

Supported metal alkyl compound and process for the polymerization of olefins in its presence

The present invention relates to a process for preparing a catalyst solid for olefin polymerization, comprising a finely divided support, an aluminoxane and a metallocene compound, which comprises

The invention relates to a chemical compound of formula (I), wherein Mrepresents an element selected from main groups II, III or IV of the periodic table of elements; x is equal to 1, 2, 3 or 4; y is equal to 2, 3 or 4, and; A represents a cation of main group V of the periodic table of elements; Ris the same or different and represents a branched or unbranched linear or cyclic C&#x2013;Cgroup that contains carbon; Ris the same or different and represents a branched or unbranched linear or cyclic C&#x2013;Cgroup that contains carbon; Rrepresents a branched or unbranched linear or cyclic C&#x2013;Cgroup that contains carbon, and; Rrepresents a hydrogen atom; whereby Rand Rare always different from one another 

Chemical compound, method for the production thereof and its use in catalyst systems for producing polyolefins

A supported catalyst for olefin polymerization comprises

Supported catalyst for olefin polymerization

A method of determining the quality of polymerization catalysts comprises

Determination of the quality of polymerization catalysts

In a process for preparing a metal-containing supported catalyst or a metal-containing supported catalyst component by impregnation of a support material with an impregnation solution comprising the metal component, the impregnation solution flows through the support material.

Preparation of a metal-containing supported catalyst or a supported catalyst component by impregnation of a support material

The invention relates to a method for producing a supported catalyst which contains metal, or a supported catalyst constituent which contains metal by impregnating a supporting material with an impregnating solution containing the metal constituent, whereby the impregnating solution flows through the supporting material.

Method for producing a supported catalyst

A process for preparing a supported catalyst comprises the steps of (1) preparation of a copolymer having comonomer units which comprise leaving groups; (2) polymer-analogous reaction with a substituted or unsubstituted cyclopentadienyl compound, and (3) reaction of the copolymer of (2) with a mono-Cp-metallocene compound.

Method for producing carrier-borne catalysts

Method for producing a supported catalyst system

Racemic metallocene complexes are prepared by reacting bridged or unbridged transition metal complexes with cyclopentadienyl derivatives of alkali metals or alkaline earth metals and, if desired, subsequently replacing the aromatic ligands.

Method for selective production of racemic metallocene complexes

Polymers of propene

A process for preparing a compound of the formula I

Process for producing substituted indanones

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Koblenz, Germany

Heike Gregorius