Basell Polyolefine Gmbh

Basf Aktiengesellschaft

Bassell Polyelefine Gmbh

Basf Se Corporation

Joachim Wulff-Döring

Rolf Hartmuth Fischer

Johann-Peter Melder

Shahram Mihan

Peter Kölle

Rolf Pinkos

Wolfgang Bidell

Sylvia Huber

Dieter Lilge

Stephan Andreas Schunk

Rainer Karer

Guido Funk

Peter Bauer

Martin Schneider

Volker Fraaije

Frank Stein

Martin Lux

Philipp Rosendorfer

Volker Rauschenberger

Günther Schweier

Markus Oberhoff

Nicola Stefanie Paczkowski

Markus Schopf

Andreas Haufe

Thomas Nöbel

Ingo Treffkorn

Wolfgang Gsella

Michael Hesse

Boris Breitscheidel

Rolf-Hartmuth Fischer

Marc Walter

Manfred Julius

Frank-Friedrich Pape

Frank Haese

Shelue Liang

Michael Jolyon Sprague

Otto Kumberger

Joachim Rösch

Wolf Spaether

Ulrich Köhler

Carsten Süling

Markus Meierhöfer

Nicola (Hüsgen) Paczkowski

Peter Gaa

Catalyst for the polymerization and/or copolymerization of olefins which is obtainable by application to a finely divided inorganic support and concluding calcination at temperatures of from 350 to 1050&#xb0; C. and has a chromium content of from 0.1 to 5% by weight and a zirconium content of from 0.5 to 10% by weight, in each case based on the element in the finished catalyst, with the molar ratio of zirconium to chromium being from 0.6 to 5.

Catalyst comprising chromium and zirconium for the polymerization and/or copolymerization of olefins

Process for preparing a supported catalyst for the polymerization and/or copolymerization of olefins which has a chromium content of from 0.01 to 5% by weight, based on the element, which comprises

Process for preparing a chromium-based catalyst for the polymerization and/or copolymerization of olefins

Process for polymerizing at least one olefinic monomer in a loop reactor at from 20 to 150&#xb0; C., but below the melting point of the polymer to be formed, and a pressure of from 5 to 100 bar, where the polymer formed is present in a suspension in a liquid or supercritical suspension medium and this suspension is circulated by means of an axial pump, wherein the loop reactor comprises a cyclic reactor tube whose diameter varies by at least 10%, based on the predominant reactor tube diameter, and in which there is at least one widening and narrowing in a region other than that of the axial pump.

Loop reactor with varying diameter for olefin polymerization

Process for polymerizing at least one olefinic monomer selected from ethylene, propylene and 1-butene in a loop reactor in the presence of a polymerization catalyst at from 20 to 150&#xb0; C., but below the melting point of a polymer to be formed, and a pressure of from 43 to 80 bar, where the polymer formed is present in a suspension in a liquid or supercritical suspension medium and wherein the suspension is circulated by means of an axial pump, wherein the polymerization is carried out at an average solids concentration in the reactor of more than 53% by weight, in the case of continuous product discharge, and at an average solids concentration in the reactor of more than 45% by weight, in the case of discontinuous product discharge, and wherein the polymerization is carried out at an ethylene concentration of at least 10 mol %, based on the suspension medium.

Novel supported, titanized chromium catalysts for the homopolymerization of ethylene and the copolymerization of ethylene with &#x3b1;-olefins, a process for preparing them and to their use for the polymerization of olefins.

Supported, titanized chromium catalyst and its use for preparing homopolymers and copolymers of ethylene

In a process for preparing alcohols by catalytic hydrogenation of carbonyl compounds over a catalyst comprising rhenium on activated carbon, the catalyst used comprises rhenium (calculated as metal) in a weight ratio to the activated carbon of from 0.0001 to 0.5, platinum (calculated as metal) in a weight ratio to the activated carbon of from 0.0001 to 0.5 and, if appropriate, at least one further metal selected from among Zn, Cu, Ag, Au, Ni, Fe, Ru, Mn, Cr, Mo, W and V in a weight ratio to the activated carbon of from 0 to 0.25, and the activated carbon has been nonoxidatively pretreated. It is also possible to prepare ethers and lactones if the hydrogen pressure is not more than 25 bar. In this case, the activated carbon in the catalyst may also have been nonoxidatively pretreated.

Catalytic hydrogenation over rhenium-containing catalysts supported on activated carbon

Catalyst solid for olefin polymerization comprising

Catalytic solid supported on calcined hydrotalcite for olefinic polymerisation

A process for the hydrogenation of an organic compound containing at least one carbonyl group comprises bringing the organic compound in the presence of hydrogen into contact with a shaped body which can be produced by a process in which

Catalyst and method for hydrogenating carbonyl compounds

Novel supported, titanized chromium catalysts can be used for the homopolymerization of ethylene and the copolymerization of ethylene with &#x3b1;-olefins.

Suspended chrome catalyst containing titanium and the use thereof for producing ethylene homopolymers and copolymers

Catalyst system for olefin polymerization comprising

Catalyst system for carrying out olefin polymerization comprising a calcined hydro-talcite serving as a supporting material

In a process for preparing alcohols by catalytic hydrogenation of carbonyl compounds over a catalyst comprising rhenium on activated carbon, the catalyst used comprises rhenium (calculated as metal) in a weight ratio to the activated carbon of from 0.0001 to 0.5, platinum (calculated as metal) in a weight ratio to the activated carbon of from 0.0001 to 0.5 and, if appropriate, at least one further metal selected from among Zn, Cu, Ag, Au, Ni, Fe, Ru, Mn, Cr, Mo, W and V in a weight ratio to the activated carbon of from 0 to 0.25, and the activated carbon has been nonoxidatively pretreated It is also possible to prepare ethers and lactones if the hydrogen pressure is not more than 25 bar. In this case, the activated carbon in the catalyst may also have been nonoxidatively pretreated.

Method for catalytic hydrogenation on rhenium-containing active carbon carrier catalysts

A catalyst solid for olefin polymerization comprising

Method for production of a solid catalyst for olefin polymerization

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Frankenthal, Germany

Joachim Wulff-Döring