Foams of graphene, method of making and materials made thereof
US9845245B2 · kind B2 · utility
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Key dates
| Filing date | Mar 23, 2015 |
| Grant date | Dec 19, 2017 |
| Priority date | — |
| Expiry date | Jul 5, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K23/22
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Method for making a liquid foam from graphene. The method includes preparing an aqueous dispersion of graphene oxide and adding a water miscible compound to the aqueous dispersion to produce a mixture including a modified form of graphene oxide. A second immiscible fluid (a gas or a liquid) with or without a surfactant are added to the mixture and agitated to form a fluid/water composite wherein the modified form of graphene oxide aggregates at the interfaces between the fluid and water to form either a closed or open cell foam. The modified form of graphene oxide is the foaming agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.