Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Reexamination Certificate
2006-10-17
2006-10-17
Jiang, Shaojia (Department: 1623)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
C549S475000
Reexamination Certificate
active
07122661
ABSTRACT:
The invention concerns a method for purifying a composition containing at least a product for internal dehydration of a hydrogenated sugar. The invention is characterised in that it comprises: (a) an optional step whereby said composition is treated, whether after re-dissolving or not, with at least a discoloration means; (b) a subsequent step whereby the composition, optionally treated with discoloration means, is treated with at least ion-exchanging means; (c) a subsequent step whereby the resulting composition is treated with at least discoloration means. Said method is in particular applicable to isohexide compositions, in particular isosorbide or isomannide. The resulting compositions, which exhibit particular characteristics in terms of purity and proportion of some impurities, constitute novel products for use in chemical, pharmaceutical, cosmetology and food industries.
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Fleche Guy
Fuertes Patrick
Tamion Rodolphe
Wyart Hervé
Jiang Shaojia
Krishnan Ganapathy
Roquette Freres
Young & Thompson
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