Method for the treatment of a porous substrate
US12364970B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Sep 30, 2019 |
| Grant date | Jul 22, 2025 |
| Priority date | — |
| Expiry date | Apr 20, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2305/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for the treatment of a substrate; the substrate comprises hollow fibre membranes, each of which has a side wall, comprising a base material, and an inner lumen, which is delimited by the side wall; the base material comprises a polysulfone or a derivative thereof; the substrate is placed in contact with graphene oxide in the presence of a liquid so as to obtain an intermediate compound, from which the liquid is at least partially removed and which is thermally treated so that the graphene oxide is at least partially fixed to the substrate and a treated material is obtained comprising treated fibres.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.