Convertible microemulsion formulations
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United States of America Patent
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May 27, 1997
Issued Date -
N/A
app pub date -
Apr 20, 1995
filing date -
Apr 19, 1991
priority date (Note) -
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Abstract
There is provided a water-in-oil (w/o) microemulsion which readily converts to an oil-in-water (o/w) emulsion by the addition of aqueous fluid to the w/o microemulsion, whereby any water-soluble biologically-active material in the aqueous phase is released for absorption by the body. The w/o microemulsion is particularly useful for storing proteins and the like for long periods of time at room temperature and above until they are ready for use, at which time the addition of aqueous fluid converts the microemulsion to an o/w emulsion and releases the protein.
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