Low-rinse, high-capacity, weakly basic acrylic ion exchange resins process for preparing them, and their use in removing anions from a liquid.

摘要

The invention provides weakly basic anion exchange resins having both low rinse-volume requirements and high anion exchange capacity, the resins comprising copolymers formed from monomers comprising acrylonitrile and crosslinker having two or more unconjugated allylic groups, the copolymers being functionalized with polyamine.
The invention also provides a process for preparing the weakly basic anion exchange resins, and a process for removing anions from a liquid using the resins.