Particle formation
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United States of America Patent
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N/A
Issued Date -
N/A
app pub date -
May 3, 2006
filing date -
Jul 20, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Method for preparing a target substance in particulate form, comprising introducing into a particle formation vessel, through separate first and second fluid inlets respectively, (a) a 'target solution/suspension' of the substance in a fluid vehicle and (b) a compressed fluid anti-solvent, and allowing the anti-solvent to extract the vehicle so as to form particles of the substance, wherein the anti-solvent fluid has a sonic, near-sonic or supersonic velocity as it enters the vessel, and wherein the anti-solvent and the target solution/suspension enter the vessel at different locations and meet downstream (in the direction of anti-solvent flow) of the second fluid inlet. Also provided is apparatus for use in such a method.
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