Deutsche Carbone Ag

Basf Aktiengesellschaft

Gft Gesellschaft Fur Trenntechnik Mbh

Guido Ellinghorst

Hartmut E Brueschke

Hermann A Steinhauser

Axel Niemoeller

Werner Hefner

Luise Spiske

Hartmut E Bruschke

Andreas Huebner

Harald Meissner

Guenter F Tuesel

Guenter Tusel

Bernd Goetz

Horst Scholz

Process for the manufacture of composite plasma membranes with the production of a pore-free impermeable polymer layer on a porous substrate through the plasma polymerization of a gaseous mixture, said gaseous mixture containing a hydrocarbon as the matrix-forming component and a nitrogen-, silicon-, sulphur- or phosphorus-containing inorganic compound as the non-matrix-forming component and an oxygen-containing compound, by means of glow discharge in an electrical alternating field. The pore-free impermeable polymer layer is produced directly on a porous substrate without the use of an impermeable intermediate layer, said porous substrate having a pore diameter of less than 100 nm on the side facing the pore-free polymer layer. The composite plasma membranes are used for separating C.sub.1 -C.sub.3 alkanols from mixtures thereof with other organic liquids using the method of pervaporation.

Process for the manufacture of a composite plasma membrane and use

In a process for removing water by pervaporation or vapor permeation from mixtures with alcohols and/or carboxylic acids and/or carboxylic esters by bringing the mixture into contact with one side of a membrane and removing the water-containing permeate in vapor form from the other side of the membrane, the membrane used has been obtained by plasma polymerization.

Removal of water from mixtures with alcohols and/or carboxylic acids

Polymer having a betaine structure, solution diffusion membrane, process

Method for production of solution-diffusion membranes and their

Growing community of inventors

Overath, Germany

Guido Ellinghorst