Chemical Processing Features and Benefits

Dow's problem solving experts work exclusively with DOWEX™ ion exchange resins. DOWEX resins are indispensable tools for cost-effective catalysis and removal of a broad spectrum of metal salts by reducing unit operations and minimizing safety and storage concerns. DOWEX ion exchange resin have the highest capacities in the industry for metals and mineral salts that can accumulate during use. DOWEX OPTIPORE™ polymeric adsorbents are also effective in removing undesireable color components from a variety of mineral acids.

Dow's long experience in the business of separation technology has allowed us to precision engineer and manufacturer DOWEX ion exchange resins to provide the right balance of quality performance, reliability, and cost.

Here are some of the other advantages to consider when selecting ion exchange resins.

Wide Product Range - Conventional particle size and cross-linked resins and catalysts are kinetically inhibited and will not work for some specialty applications. Dow's wide assortment of products provides the solution for such applications. Dow offers a wide selection of fine mesh resins with varying levels of cross-linking that allow interaction of the catalyst site with these cumbersome alkyl groups. Cross-linking levels range from 2% to 8% and particle sizes from 300 microns to 37 microns.

Improved Productivity with Uniform Particle Size Products – Continuous operations in packed beds must be optimized for maximum throughput. Considerations should be made regarding kinetic limitations for diffusion of reactants and of product back out. Because of their relatively long diffusion paths, the largest beads are the most kinetically limited with an effective "dead zone" present at the center of the bead. Pressure drop through the bed is another potential limitation. While the smallest beads have very fast diffusional kinetics, they contribute more to the pressure drop. DOWEX MONOSPHERE™ ion exchange resin are made by a patented process resulting in excellent uniformity of bead size. Many customers have experienced as much as 15% increase in productivity when switching from a standard bead size to uniform particle size products.

Assistance With Process Development – Dow has a staff of experienced process development experts that represent decades of process expertise. Please contact us.