Carbon dioxide and polymer compositions for permeability control and sealing
US10876041B2 · kind B2 · utility
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5References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 12, 2019 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | May 15, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F220/24
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of treating a material to achieve at least one of reducing surface wettability of the material or reducing fluid transport through the material includes exposing the material to a composition including a solution of a polymer portion and carbon dioxide for a period of time. The polymer portion includes at least one of a polyfluoroacrylate or a copolymer of a fluoroacrylate and a comonomer. A pressure of the composition is maintained above the cloud point of the polymer portion at a concentration thereof in the carbon dioxide for the period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.