Patent ID: 6541527
Filing Date: 2003-04-01
Classification: C08J

Abstract:
A method for controlling the surface area and pore volume of a polymer bead, which method comprises the steps ofsuspension-polymerizing an organic phase comprising a chlorinated monovinyl monomer, a polyvinyl crosslinking monomer, and an initiator in an aqueous phase containing a suspension stabilizer to obtain a crosslinked copolymer bead with chloromethyl group, wherein the molar fraction of polyvinyl cross-linking monomer ranges from 0.20 to 0.80 of the total amount of monomers; swelling the copolymer bead in a swelling solvent selected from the group consisting of dichloroethane, dichlorobenzene, propylene dichloride, chlorobenzene, and hexane, and post-crosslinking the swollen copolymer bead in the presence of a Friedel-Crafts catalyst.