Abstract: The invention relates to a method for isolating an aqueous hydrochloric acid solution of FeCl3 from an aqueous multi-component system.

Abstract: The present invention provides a process for removing gaseous constituents dissolved in liquid reaction mixtures in the copolymerization of alkylene oxide and carbon dioxide, characterized in that (?) prior to decompression the liquid reaction mixture has a pressure of 5.0 to 100.0 bar (absolute), wherein the following process stages are performed in the specified sequence: (i) decompression of the reaction mixture by at least 50% of the prevailing pressure, (ii) subsequent droplet separation with first defoaming and (iii) subsequent bubble separation with second defoaming to clarify the liquid phase, wherein the process stages (i) to (iii) are performed one or more times until the resulting reaction mixture has a pressure of 0.01 to <5.00 bar (absolute), and also a process for preparing polyethercarbonate polyols comprising the process stages (i)-(iii).

Abstract: The present invention relates to water and solvent-free polymers, in particular water and solvent-free synthetic rubber products like non-halogenated and halogenated butyl rubber products as well as a process for the production thereof. The invention further relates to a device suitable to accomplish said process.

Abstract: The present invention relates to specific water and solvent-free nitrile rubbers having specific functional groups and/or end groups, a process for the production thereof and the use thereof. This process involves removing volatile compounds from a fluid (F) containing (1) at least one nitrile rubber and (2) at least one volatile compound, wherein the process comprises at least the steps of a.) treating the fluid (F) in at least one conversation unit, b.) retreating the concentrated fluid from step a.) in at least one retreating unit and c.) feeding the retreated concentrated fluid from step b.) into at least one retreating unit.

Abstract: The present invention relates to water and solvent-free polymers, in particular water and solvent-free synthetic rubber products like non-halogenated and halogenated butyl rubber products as well as a process for the production thereof. The invention further relates to a device suitable to accomplish said process.

Abstract: A method for separating electrolyte-containing water from an organic phase by means of permeation on a hydrophobic separating means. The permeated organic solution is substantially depleted in water and the retained water is enriched with electrolytes.

Abstract: The present invention relates to water and solvent-free polymers, in particular water and solvent-free synthetic rubber products like non-halogenated and halogenated butyl rubber products as well as a process for the production thereof. The invention further relates to a device suitable to accomplish said process.

Abstract: Method for purifying therapeutic proteins by multi-stage extractive distillation.

Abstract: The invention relates to an industrial process for purifying the product mixture of a transesterification reaction with a polar, electrolyte-containing organic phase, in which the electrolytes are removed from the permeating polar organic phase by means of a nanofiltration step.

Abstract: The present invention relates to calix[4]arenes which effectively bind alkali metal ions (Na+, K+) and transport them over phase boundaries, their preparation and use.

Abstract: The present invention relates to a process for preparing phosphoric acid esters, in particular a process for preparing monomeric bridged bisaryl diphosphates, wherein a water-binding agent is added to the reaction solution.

Abstract: Multi phase extractor, comprising an extraction chamber, a washing chamber and a re-extraction chamber, said chambers each having inlets adapted to disperse and discharge a phase therein, and connecting channels adapted to convey a continuous phase from said extraction chamber to said washing chamber, from said washing chamber to said re-extraction chamber from said re-extraction chamber to said extraction chamber, and each of said chambers having drains for removing the phase discharged into it by said inlets.

Abstract: The present invention relates to a process for preparing phosphoric acid esters, in particular monomeric bisaryl diphosphates, or bridged phosphates.

Abstract: Triphase extraction tower having two chambers connected at their top and bottom parts of overflows, and having ports for feeding and removing a first and second disperse phase.