Ion exchange products and processes using crosslinked allylamine copolymers
AssigneeICI Australia Limited
InventorsBrian A. Bolto, Kurt H. Eppinger
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Abstract
Ion exchange resins of the poly(allylamine) type which comprise an aralkyl radical or a saturated aliphatic radical, and which may be made by reacting an allylamine type polymer with an organic dihalo compound so as to crosslink it.
Claims17
A process for the reduction of the swelling propensity of partially addition crosslinked polymeric material, capable of acting as an ion exchange material and derived from a monomer of the allylamine type, which process comprises treating the said polymeric material with a liquid capable of swelling said polymeric material and with a dihalo organic compound capable of causing further crosslinking in the said polymeric material.
A process for making an ion-exchange material which process comprises first, forming a mixture comprising as a first component partially addition crosslinked polymeric material capable of acting as an ion-exchange material and derived from a monomer of the allylamine type and as a second component polymeric material capable of acting as an ion-exchange material and derived from a weakly acidic monomer, and secondly, treating said mixture with a dihalo organic compound in a manner such that the propensity of the said first component of said ion-exchange material to swell is reduced.
Dependencies are inferred from the claim text.