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US 7,521,030 B2Granted
Materials treatment
AssigneeGlaxo Group Limited
InventorMazin Nicola
Life of this patent
Estimating the term…
Abstract
A material contaminated with a solvent is treated with a hydrofluorocarbon to remove the contaminant. A preferred hydrofluorocarbon is tetrafluoroethane. Apparatus for carrying out the process is also described.
Claims19
A process of removing a first solvent from a mass of powdered amoxycillin in which the first solvent is not naturally occurring, the process comprising:
- (a) contacting the mass of powdered amoxycillin with second solvent comprising a C1-C4, fluorinated hydrocarbon so as to charge the second solvent with the first solvent;
- and
- (b) separating charged second solvent from the remainder of the mass of powdered amoxycillin.
Dependencies are inferred from the claim text.