Abstract: A process for making porous polymeric particles having high surface area includes suspending a discontinuous organic phase in an continuous aqueous phase, wherein the organic phase includes an ethylenically unsaturated monomer, a water soluble phase extender and a surfactant in an amount effective to solubilize the water soluble phase extender in the monomer and wherein the aqueous phase includes a diffusion barrier agent for limiting mass transfer of the phase extender from the organic phase to the aqueous phase, and then polymerizing the ethylenically unsaturated monomer to form the porous polymeric particles.

Abstract: Highly crosslinked styrenic copolymers are treated to enhance their surface area by reacting residual vinyl groups in the copolymers in the presence of water or other non-swelling liquid and a Lewis-acid catalyst at elevated temperature

Abstract: An ion exchange resin composition which comprises the reaction product of an epihalohydrin with a polyamine is alkylated. The polyamine has a molecular weight of from about 60 to about 298. This invention also encompasses a process for preparing the ion exchange resin composition which comprises reacting from about two-thirds of a stoichiometric amount of epihalohydrin to one and one-half times the stoichiometric amount of epihalohydrin with defined polyamines and thereafter reacting the resultant polymer with an alkylating agent to yield the final product.