Resolution of a mixture of organic materials by simulated moving bed chromatography using a weakly interacting adsorbent as a stationary phase can be routinely effected with a liquid mobile phase characterized by atypically low values of k' with recoveries of at least 95% and a purity of at least 95%....http://www.google.de/patents/US5645729?utm_source=gb-gplus-sharePatent US5645729 - Separations by simulated moving bed chromatography operating at low k' values using weakly interacting adsorbents as the stationary phase