Method for preparing a suspension containing carbon nanotubes and stable suspension obtained in this way
US10173189B2 · kind B2 · utility
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Key dates
| Filing date | Feb 27, 2015 |
| Grant date | Jan 8, 2019 |
| Priority date | — |
| Expiry date | Aug 9, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B2202/34
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention concerns a method for preparing a suspension of carbon nanotubes in an aqueous solution comprising the following successive steps consisting of subjecting an aqueous solution containing carbon nanotubes and a surfactant to at least one cycle of freezing in liquid nitrogen and thawing; and subjecting said thawed solution to an ultrasound treatment. The present invention also concerns a suspension of carbon nanotubes, and in particular a suspension of long carbon nanotubes, that can be prepared by such a method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.