MATIERE POLYMERE DESTINEE A LA SEPARATION PHYSICO-CHIMIQUE DES SUBSTANCES ET PROCEDE DE PREPARATION DE LADITE MATIERE

摘要

A polymeric material comprising a solid dispersion of a porous three-dimensional polymer with a pore diameter of 0.002 to 10 mu m and a permeability coefficient of from 2x10-7 to 2x1031 2cmxsec-1. This material is produced by reacting formaldehyde with at least one monomer capable of forming, with formaldehyde, a polymer of a three-dimensional structure. The reaction is carried out in the presence of a polymerization catalyst in an aqueous medium at a pH of from 0.1 to 4, while maintaining the polymer concentration within the range of from 20 to 65% by mass. Thereafter the solution with the polymer is maintained for a period sufficient to form a porous polymer in the form a solid dispersion.