Wacker Chemie Ag

Wacker-chemie Gmbh

Johann Weis

Hans-Juergen Eberle

Marco Hofmann

Hans-Jurgen Eberle

Roland Heidenreich

Helmut G Alt

Christian Herzig

Bernward Deubzer

Oskar Nuyken

Volker Frey

Torsten Gottschalk-Gaudig

Fritz Schwertfeger

Frank Baumann

Alexander K&ouml;ppl

Hans-Jürgen Eberle

Christoph Rüdinger

Hans-Peter Scherm

Wolfgang Schweren

Achim Molter

Peter Ritter

Ragnar Bogner

Joachim Pohl

Kamelia Karlou-Eyrisch

Shaped bodies with good strength properties are prepared from pyrogenic metal oxide(s) by suspending the metal oxide(s) in a liquid, milling to activate the metal oxide particles, forming an activated homogenous suspension, coagulating the suspension, and forming shaped bodies therefrom.

Method for producing stable, high-purity molded bodies from pyrogenic metal oxides without the addition of binders

Especially physically stable metal oxide catalyst supports are prepared by suspending a metal oxide in a continuous phase, activating by fine dispersion, coagulation to a viscoelastic mass, shaping, drying, and calcining. The catalyst support thus prepared may be treated with catalytic agents to produce supported catalysts for olefin oxidation.

Method for producing catalysts and their use for the gas phase oxidation of olefins

Ruthenium compounds which have, in their ligand sphere, at least one &#x3b7;-bonded arene ligand and a silyl ligand; ruthenium complexes which have, in their ligand sphere, at least one &#x3b7;-bonded arene ligand to which is bonded a silyl or siloxy radical directly or via a spacer, and ruthenium complexes which have, in their ligand sphere, at least one &#x3b7;-bonded arene ligand and at least one further ligand to which is bonded a silyl or siloxy radical directly or via a spacer are useful as hydrosilylation catalysts.

Ru complexes, production and use thereof

Hydrosilylatable compositions employ ruthenium compounds with a ligand sphere comprising at least two independent carbon &#x3c0;-bonded ligands, at least one of these ligands being selected from the group consisting of &#x3b7;-bonded arene ligands, &#x3b7;-bonded triene ligands, &#x3b7;-bonded 1,5-cyclooctadiene ligands and &#x3b7;-bonded 1,3,5-cyclooctatriene ligands as a hydrosilylation catalyst.

Hydrosilylation process in the presence of ruthenium catalyzers

A process for preparing isocyanoatoorganosilanes by thermolysis of carbamatoorganosilanes in the presence of microwave radiation, optionally employing homogeneous or heterogeneous catalysis, provides isocyanatoorganosilane product in higher yield than prior art thermolyses, and with fewer byproducts. A continuous process is thus possible.

Method for the production of isocyanatoorganosilanes

Extremely high solids content silica dispersions are useful for forming green bodies of near net shape as compared to the shape of the bodies after sintering. The green bodies are particularly useful for sintering to form low impurity-containing crucibles for single crystal silicon production.

High-solids SiO2 dispersions, process for producing them, and their use

The invention relates to particles comprises of organopolysiloxane microgel particles having a diameter of 5 to 200 nm and organo-aluminum compounds immobilized thereon. The particles can be used as cocatalysts together with metal compounds of the 4, 5, 6 and 8-10 sub-groups of the periodic table for oligomerization, cyclization of polymerization of olefins.

Organo-aluminum compounds immobilized on organopolysiloxane microgel particles

The invention describes new organosilicon compounds containing alkenyl groups, comprising units of the formula

Organosilicon compounds containing alkenyl groups

Growing community of inventors

Sauerlach, Germany

Johann Weis