List Holding Ag

Thomas Isenschmid

Daniel Witte

Manuel Steiner

Pierre-Alain Fleury

Pierre Liechti

Andreas Diener

Alfred Kunz

Reinhard Geisler

Pierre Lichti

Alain Schwick

A process for thermal separation of a solution comprised of a thermoplastic polymer and a solvent involves heating a solvent under pressure above a critical point of the solvent; decompressing the heated solvent in a first vessel, such that a polymer-rich and a low-polymer phase form; and supplying the polymer-rich phase to a second vessel. In embodiments, on entry into the second vessel, a pressure jump occurs, the pressure jump leading to a thermal flash in the second vessel such that a polymer part of the polymer-rich phase rises to at least 70%, and a resulting polymer-rich solution is provided.

Process for thermal separation of a solution

Process for thermal separation of a solution consisting of thermoplastic polymer and solvent

A process for the continuous thermal treatment of mixed substances, especially of solutions, suspensions and emulsions, wherein the continuous treatment of the mixed substances is divided into a main vaporization and a degassing stage, in which instance the main vaporization and the degassing take place in each case takes place in a separate mixer-kneader.

Process and a device for the continuous treatment of mixed substances

A process for continuously performing polymerization processes, wherein monomer(s), catalysts, and initiators are added continuously to a backmixed mixing kneader (-) with a length/diameter ratio of 0.5-3.5 and backmixed therein with already reacted product, and the reacted product is simultaneously drawn off continuously from the mixing kneader (-).

Method for the continuous implementation of polymerisation processes

A method for producing a spinning solution for producing a polymer fiber, particularly a p-aramid fiber, the polymer being blended with a solvent, mixed, melted, homogenized, and degassed and then discharged, liquid sulfuric acid being used as the solvent and at least the mixing, homogenization, and degassing taking place in a preferably continuously operated single or double cell reactor ().

Method and system for producing a spinning solution for producing a polymer fiber

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Magden, Switzerland

Thomas Isenschmid