Concentrated water dispersion of graphene and method for the preparation thereof
US10435837B2 · kind B2 · utility
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Key dates
| Filing date | Feb 28, 2014 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | Apr 8, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B2204/32
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Concentrated dispersion from 5 to 50% by weight of nanoparticles of graphene in water with a lateral size from 10 to 5000 nm and thickness from 0.34 to 30 nm. The production process comprises the dispersion in water of flakes of expanded graphite and the subsequent treatment with ultrasounds at an energy level of from 100 to 2000 W for a period from 1 to 100 hours.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.