Back to results
US 5,879,715 AGranted
Process and system for production of inorganic nanoparticles
AssigneeCeraMem Corporation
InventorsRichard J. Higgins, Robert L. Goldsmith
Life of this patent
Estimating the term…
Abstract
A process and system for the production of inorganic nanoparticles by precipitating the inorganic nanoparticles by a precipitating agent from a microemulsion with a continuous and a non-continuous phase; and concentrating the precipitated nanoparticles employing an ultrafiltration membrane.
Claims24
A process for production of inorganic nanoparticles, comprising the steps of:
- a) precipitating the inorganic nanoparticles within a non-continuous micellar phase in a microemulsion containing a non-continuous micellar phase and a continuous phase;
- and
- b) concentrating the nanoparticles for recovery by ultrafiltration employing a semipermeable membrane with a pore size selected to retain substantially all the nanoparticles precipitated in the micellar phase, while permeating a permeate stream of the microemulsion continuous phase and the micellar phase not containing precipitated nanoparticles.
A system for the production of inorganic nanoparticles which system comprises:
- a) a source of inorganic nanoparticles within a non-continuous micellar phase in a microemulsion containing a non-continuous micellar phase and a continuous phase;
- b) precipitating means to add a precipitating agent to the said source to precipitate the nanoparticles from the microemulsion;
- c) ultrafiltration semipermeable membrane means to concentrate the precipitated nanoparticles by retention and to permeate the microemulsion continuous phase and the micellar phase not containing the precipitated nanoparticles as a permeate stream;
- and
- d) means to recover the precipitated nanoparticles.
2 more elements
Dependencies are inferred from the claim text.