Process for the purification of a composition containing an internal dehydration product of a hydrogenated sugar by ion exchange and Decoloration treatments

摘要

The process is used particularly for the treatment of a composition containing dianhydro hexitols to obtain pure colorless compounds. A new process for the purification of compositions containing at least one internally dehydrated product of a hydrogenated sugar comprising : (a) an optional stage of decoloration, by treatment in solution or otherwise; (b) a treatment with an ion exchange material; (c) a subsequent stage of decoloration. Independent claims are also included for the compositions obtained and their use.