Styrene-divinylbenzene copolymer

Styrene-divinylbenzene copolymer (CAS 9003-70-7) is a crosslinked polymer resin produced by copolymerizing styrene with divinylbenzene to create a rigid, porous bead structure. It functions as a base matrix for ion exchange resins and chromatographic media.

This material is essential for solid-phase extraction sorbents across water treatment, pharmaceutical, and life sciences applications. In water treatment, the resin matrix is functionalized to produce cation and anion exchange resins.

These resins are used for demineralization, softening, and removal of heavy metals from industrial effluents. Pharmaceutical manufacturers rely on functionalized grades as the backbone of purification resins used in API isolation.

The polymer is also utilized in chromatographic separation processes and solid-phase extraction. In these roles, the unfunctionalized or lightly modified polymer captures organic compounds from aqueous matrices for analytical sample preparation.

Biotechnology applications include use as a support matrix in affinity and size-exclusion chromatography columns. These systems are vital for protein and biomolecule purification in laboratory and industrial settings.

The product is supplied as spherical beads in dry or pre-swelled form, with particle size distributions tailored to specific requirements. Grades are available across a range of crosslink densities for various uses.

The crosslink density determines the pore structure and surface area for the intended downstream functionalization. Technical and chromatographic-grade materials are both commercially available for industrial buyers.

The latter meets tighter specifications for use in regulated pharmaceutical manufacturing environments. This ensures consistent performance and reliability for high-purity applications in the chemical and medical sectors.