Inventors:
Arne Brodin - Sodertalje, SE
Sylvan Frank - Columbus OH, US
Chao Ye - Lake Bluff IL, US
International Classification:
A61K031/24, A61K009/14, B29B009/00
US Classification:
424/486000, 264/005000, 514/536000
Abstract:
The present invention is directed to improved methods for producing solid dispersions, especially pharmaceutical dispersions. These methods involve the dissolution of one or more insoluble or relatively insoluble substances, preferably pharmaceutically active substances, and/or one or more water-soluble substances, preferably carriers, in supercritical fluids and the subsequent removal of solvent by rapid expansion. These methods offer a number of advantages over traditional preparation methods and form formulations with highly desirable dissolution properties, especially for pharmaceuticals.