PROCESS FOR MODIFYING THE SURFACE OF MOULDINGS, MOULDINGS SO PRODUCED AND THEIR USE FOR SEPARATING SUBSTANCES BY ADSORPTION

摘要

In a process for modifying the surface of mouldings, the mouldings are grafted with ethylenically unsaturated monomers. A layer of a second polymer is formed on the surface of the moulding, which is made of a first polymer. A third polymer is then formed on the layer of the second polymer by grafting at least one ethylenically unsaturated monomer onto the layer of the second polymer. The invention makes it possible, amongst other things, to limit the grafting to the layer of the second polymer without the first polymer being adversely affected by the intercalation of the graft polymer. The grafted mouldings of the invention can be used, amongst other things, in a separation process based on the principle of adsorptive separation of substances.