Compositions are provided that can include: a polymer matrix; and a plurality of ion-exchange particles distributed within the matrix. Solid polymeric compositions are provided that can include: a plurality of polymer chains from at least one polymer type ...

A non-aqueous absorbent comprising a crosslinked polymer which contains a structural unit having a carboxyl group and/or a sulfonate group in an amount of 20 to 100% weight in its molecule and in which from 30 to 100% by mol of the protons in the carboxyl ...