Skw Trostberg Aktiengesellschaft

Evonik Degussa Gmbh

Evonik Operations Gmbh

Franz Michlbauer

Helmut Hausner

Heinz-Rudiger Vollbrecht

Jan Cully

Jurgen Heidlas

Ralf Kahleyss

Johann Wiesmueller

Roland Wursche

Martin Ober

Johann Wiesm&uuml;ller

J&uuml;rgen Heidlas

Kurt Stork

J&uuml;rgen Graefe

Karl-Heinz Zirzow

Florian Schwager

Johann Wiesmüller

Harald Kaiser

Guenther Oberbauer

Claudius Neumann

Dieter Adam

Rainer Band

A process for producing cycloalkenamer-containing compositions involves converting at least one cycloalkene by ring-opening metathetic polymerization to obtain a polyalkenamer-containing product mixture. The product mixture is worked up to remove monomers and oligomers of the cycloalkenes to obtain the polyalkenamer-containing composition by extraction with CO. The extraction involves at least two stages: an extraction with liquid COunder the supercritical conditions, and then an extraction with supercritical CO. Such cycloalkenamer-containing compositions can be used, for example, in the field of packaging materials, especially for food and drink.

Process for preparing polyalkenamers for packaging applications

The present invention relates to a process for continuous extraction of an aqueous and/or fat-containing liquid phase F comprising aroma chemicals with a gas G in the liquid or supercritical state.

Process for extraction of aroma chemicals from fat-containing and/or aqueous liquid phases

A carnosic acid-rich plant extract can be produced by extracting a dried and comminuted plant material containing carnosic acid with supercritical COat a pressure of at least 200 bar and at a temperature of at most 100&#xb0; C. In a first step, supercritical COin a quantity of 10 to 50 kg of COper kg of plant material is passed through the plant material to obtain a first COextract. In a second step, additional supercritical COis passed through the plant material to obtain a second COextract, and a carnosic acid-rich plant extract is separated from the second COextract by lowering the pressure.

Method for producing a carnosic acid-rich plant extract

The invention relates to oil-free glycerophospholipid formulations which contain a homogeneous mixture of glycerophospholipids and an anhydrous, liquid polyol compound such as glycerol in a molar ratio of 1:0.1 to 1. These formulations are produced, eg, by extracting a starting material consisting of an oil-containing glycerophospholipid (mixture) and the polyol component with a compressed hydrocarbon (mixture) in a rectifying column. The oil-free formulation can be obtained from the melt at the bottom of the column in the form of free-flowing powder, which is ideally suited for stabilising oil-in-water emulsions.

Oil-free glycerophospholipid formulations and method for the production thereof

Process for obtaining lipid fractions from egg products in powder form

A process for the isolation of lipid fractions from egg products in powder form with a content of phospholipids is described in which the egg product is extracted

Process for the isolation of lipid fractions from EGG products in powder

In order to produce natural antioxidants by extraction of spices selected from the group of rosemary, thyme, sage and origano using compressed carbon dioxide and oreganic solvents a) these spices are de-aromatized by extraction with carbon dioxide at a pressure of 80 to 300 bar and at a temperature of 10.degree. to 80.degree. C., b) the extraction residue obtained from step a) is treated with polar alcoholic solvents with 1 to 4 C atoms and/or non-polar hydrocarbons with 5 to 7 C atoms and c) the solvent extract obtained from step b) is treated with active carbon and d) the extract obtained from step c) is aftertreated with water at a temperature of 40.degree. to 100.degree. C. if desired after extensively removing the solvent. Antioxidants obtained in this way are almost completely neutral with regard to flavour, odor as well as colour and are more effective than synthetic antioxidants.

Process for the production of natural antioxidants

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Kirchweidach, Germany

Franz Michlbauer