The majority of industrial resins, adsorbents or ion-exchangers currently on the market are optimized for use in aqeuous solutions, ie water and water-rich solutions. However, no satisfactory resins are available on the market that perform well in non-aqueous solutions where water is absent or only present as a small fraction. 

Conventional ion-exchange resins or adsorbents with their low cross-linkage perform well in water, with high swelling values and large accessible surface area and capacity. But they suffer either collapse or non-compatibility in non-aqueous solutions such as oils or organic solvents, possibly because they cannot retain their physical morphology in hydrophobic environments. 

Redstone Separations AB has therefore developed a new class of resin materials, ie highly rigid resins (RR) for use in non-aqueous solutions such as organic solvents, complex extracts from supercritical CO2 treatments, essential and natural oils and other hydrophobic solutions. 

These new resins are unique and offer performance and functionality in hydrophobic environments where conventional resins do not perform. The different resins offer a good variation of different surface chemistries and thus different selectivities that can be applied in a broad variety of applications in food, flavor and fragrance, pharmaceuticals or other areas.