Method for production of solution-diffusion membranes and their application for pervaporation

摘要

PCT No. PCT/EP86/00254 Sec. 371 Date Dec. 29, 1986 Sec. 102(e) Date Dec. 29, 1986 PCT Filed Apr. 25, 1986 PCT Pub. No. WO86/06294 PCT Pub. Date Nov. 6, 1986.For producing solution/diffusion membranes, homogeneous dense films prepared by melt extrusion or casting from synthetic polymers, having a melting temperature above 140 DEG C., a glass transition temperature above 0 DEG C. and long time stability against boiling ethanol are irradiated with accelerated electrons and submitted to a subsequent radical graft copolymerization. After graft polymerzation, the functional groups are converted into the dissociated salts.