Cognis IP Management Gmbh

Amril Ag

Stefan Franzen

Bernhard Gutsche

Bernd Fabry

Eike Ulf Mahnke

Markus Kloeker

Franz Büttgen

Ingomar Mrozek

Thomas Koelker

The invention relates to a method for producing alkylene oxide addition products by reaction of compounds having a nucleophilic center with alkylene oxides in a reactor having a large inner surface. The invention is characterized in that the reaction is carried out exclusively in the liquid phase.

Method for producing alkylene oxide addition products

A method for the production of alkylene oxide addition products comprising (i) charging a stirred reactor with a starting compound capable of adding on or inserting alkylene oxides, introducing at least one alkylene oxide plus a different diluent gas, wherein a portion of said alkylene oxide reacts in a liquid phase with said starting compound, and the remaining alkylene oxide together with said diluent gas forms a gas phase above the liquid phase, (ii) continuously drawing off said liquid phase from the bottom of the reactor via an outlet stub, and recycling to the top of the reactor via an external circulation system, which comprises at least one heat exchanger and at least one Venturi nozzle within said external circulation system, and (iii) metering said gas phase comprising alkylene oxide into said Venturi nozzle via a vacuum line.

Method and device for the production of alkylene oxide addition products

The invention provides a process for preparing alkene oxides by contacting in a microreaction system (&#x3bc;-reactor) a C- Calkene with an oxidizing agent comprising a peroxo compound.

Process for preparing alkylene oxides

A process for the ozonolysis of unsaturated starting materials, which is characterized in that the reaction is carried out in a structured reactor.

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Kamen, Germany

Stefan Franzen