Stable compositions
This invention is concerned with compositions containing an amorphous phase which comprises a water-soluble or water-swellable material, in an undercooled amorphous form. In a composition which has an amorphous, undercooled, glassy phase containing a water-soluble or water-swellable substance in an...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | This invention is concerned with compositions containing an amorphous phase which comprises a water-soluble or water-swellable material, in an undercooled amorphous form.
In a composition which has an amorphous, undercooled, glassy phase containing a water-soluble or water-swellable substance in an amorphous form, a sugar, which is capable of existing as a crystalline hydrate, is used as an agent to dehydrate the amorphous phase by crystallisation therefrom, and thereby enhance the glass transition temperature of the residual amorphous phase. |
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