Fractionating nanomaterials by a liquid multiphase composition
US9545584B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2014 |
| Grant date | Jan 17, 2017 |
| Priority date | — |
| Expiry date | Mar 23, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B2202/36
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for fractionating a nanoparticle composition, the process includes combining a first polymer, a second polymer, and a solvent to form a fluid and contacting the nanoparticle composition with the fluid. The nanoparticle composition includes a plurality of first nanoparticles, a plurality of second nanoparticles, and a dispersant disposed on an exterior surface of the first nanoparticles and the second nanoparticles. Fractionating the nanoparticle composition also includes forming a multiphase composition that includes a first phase and a second phase by partitioning the first polymer and the second polymer such that a concentration of the first polymer is greater than a concentration of the second polymer in the first phase, and the concentration of the second polymer is greater than the first polymer in the second phase, wherein the solvent is present in the first phase and the second phase. Additionally, the process includes apportioning the first nanoparticles and the second nanoparticles among the first phase and the second phase to fractionate the nanoparticle composition, based on a relative affinity of the first nanoparticles and the second nanoparticles for the fir…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.