Abstract: 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 CO2. The extraction involves at least two stages: an extraction with liquid CO2 under the supercritical conditions, and then an extraction with supercritical CO2. Such cycloalkenamer-containing compositions can be used, for example, in the field of packaging materials, especially for food and drink.

Abstract: 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.

Abstract: 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 CO2. The extraction involves at least two stages: an extraction with liquid CO2 under the supercritical conditions, and then an extraction with supercritical CO2. Such cycloalkenamer-containing compositions can be used, for example, in the field of packaging materials, especially for food and drink.

Abstract: 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.

Abstract: A carnosic acid-rich plant extract can be produced by extracting a dried and comminuted plant material containing carnosic acid with supercritical CO2 at a pressure of at least 200 bar and at a temperature of at most 100° C. In a first step, supercritical CO2 in a quantity of 10 to 50 kg of CO2 per kg of plant material is passed through the plant material to obtain a first CO2 extract. In a second step, additional supercritical CO2 is passed through the plant material to obtain a second CO2 extract, and a carnosic acid-rich plant extract is separated from the second CO2 extract by lowering the pressure.

Abstract: A carnosic acid-rich plant extract can be produced by extracting a dried and comminuted plant material containing carnosic acid with supercritical CO2 at a pressure of at least 200 bar and at a temperature of at most 100° C. In a first step, super-critical CO2 in a quantity of 10 to 50 kg of CO2 per kg of plant material is passed through the plant material to obtain a first CO2 extract. In a second step, additional supercritical CO2 is passed through the plant material to obtain a second CO2 extract, and a carnosic acid-rich plant extract is separated from the second CO2 extract by lowering the pressure.