Composite ion exchange resin bodies

Claim 1

A SOLID COMPOSITE ION EXCHANGE RESIN BODY, EACH INDIVIDUAL PIECE OF WHICH CONSISTS ESSENTIALLY OF A MIXTURE OF (1) AN INSOLUBLE, CROSS-LINKED, ORGANIC RESINOUS POLYMER HAVING ION EXCHANGING GROUPS THEREON AS SUBSTITUENTS, AND (2) A POLYMER DIFFERENT THAN (1) AND SELECTED FROM THE GROUP CONSISTING OF (A) POLYETHYLENEIMINE AND (B) POLYMERIZED MONOETHYLENICALLY UNSATURATED MONOMERS, WHICH MONOMERS CONTAIN ION EXCHANGING SUBSTITUENT GROUPS, THE INGREDIENTS JUST MENTIONED BEING MECHANICALLY INSEPARABLE FROM ONE ANOTHER, SAID COMPOSITE RESIN BODY BEING PREPARED BY A METHOD WHICH CONSISTS ESSENTIALLY IN IMBIBING, I.E. ABSORBING, INTO THE INTERSTICES OF GRANULES OF THE INSOLUBLE, CROSS-LINKED, ION EXCHANGE GROUP CONTAINING POYMER (1), THE ION EXCHANGING GROUP CONTAINING MONOMER SELECTED FROM THOSE CONSISTING OF (2) (A) AND (2) (B) ABOVE, AND POLYMERIZING SAID ION EXCHANGING GROUP CONTAINING MONOMER WHILE IT IS ABSORBED IN SITU IN SAID CROSS-LINKED COPOLYMER''S INTERSTICES BY SUBJECTING SAME TO POLYMERIZATION CONDITIONS.