Particles from supercritical fluid extraction of emulsion
US6998051B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2003 |
| Grant date | Feb 14, 2006 |
| Priority date | — |
| Expiry date | Jan 26, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J13/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of producing microparticles and nanoparticles of a solute via the extraction of solvent, having the solute dissolved therein, from an emulsion using a supercritical fluid. The solute to be precipitated is dissolved in the solvent to form a solution, and the solution is dispersed in an immiscible or partially miscible liquid to form an emulsion. The particles are produced via the extraction of the solvent from the emulsion using the supercritical fluid. The process can produce an aqueous suspension of particles that are substantially insoluble in water, and the solvents used in the process to form the emulsion initially can be recovered and recycled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.