Process for preparing graphene nanoplatelets
US10457557B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Jun 16, 2015 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | Jun 16, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/842
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
Process for producing graphene nanoplatelets, comprising expanding flakes of intercalated graphite and collection of the same in a dispersing medium with forming of a dispersion that is subjected to exfoliation and size reduction treatment carried out by high pressure homogenization in a high shear homogenizer. A dispersion of graphene is obtained in the form of nanoplatelets, at least 90% of which have a lateral size (x, y) from 50 to 50,000 nm and a thickness (z) from 0.34 to 50 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.