Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Reexamination Certificate
2011-08-30
2011-08-30
Peselev, Elli (Department: 1623)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
Reexamination Certificate
active
08008477
ABSTRACT:
The subject of the present invention is a novel method for preparing a composition of internal dehydration product of a hydrogenated sugar, comprising:a) a step of distilling a medium containing the said internal dehydration product in order to obtain a distillate enriched with this product,b) optionally, at least one subsequent step of purifying the distillate thus obtained,c) a subsequent step of bringing the distillate obtained during step a), and then optionally subjected to step b), into contact with an agent capable of improving the stability of the internal dehydration product predominantly contained in the distillate, the said agent not being in gaseous form,d) optionally, a subsequent step of shaping the resulting composition of internal dehydration product of a hydrogenated sugar.This method makes it possible in particular to obtain a stable isosorbide composition, characterized by its purity and/or its content of certain stabilizing or nonstabilizing species.
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Peselev Elli
Roquette Freres
Young & Thompson
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