PROCESS FOR SURFACE-GRAFTING OF FORMED MATERIALS, IN PARTICULAR ALSO MICROPOROUS MEMBRANES MADE FROM NITROGEN CONTAINING POLYMERS

摘要

PCT No. PCT/EP90/01498 Sec. 371 Date May 1, 1992 Sec. 102(e) Date May 1, 1992 PCT Filed Sep. 6, 1990 PCT Pub. No. WO91/03310 PCT Pub. Date Mar. 21, 1991.Halogen-substitutable hydrogen atoms are linked to nitrogen atoms of a polymer, with ethylenically-unsaturated monomers. By using inorganic or organic hypohalogenites and/or organic N-halogen derivatives as halogenation means, hydrogen atoms on the nitrogen atoms of the polymer membranes or polymer formed materials are replaced by halogen atoms and part of these are removed by reducing agents in the presence of ethylenically unsaturated monomers, with radical grafting of these on to the nitrogen atoms, after which the remaining halogen atoms are removed by reducing agents in the absence of monomers.