Crosslinked polymer compositions and methods for use in subterranean formation operations
US11268006B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Jul 10, 2020 |
| Grant date | Mar 8, 2022 |
| Priority date | — |
| Expiry date | Oct 21, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/887
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A crosslinked polymer comprising reactants of a first repeating unit, a second repeating unit, and a crosslinker that react to form the crosslinked polymer, wherein the first repeating unit is a sulfonic acid-containing monomer present from 1% to 45% by weight of the reactants, wherein the second repeating unit is selected from the group consisting of an N-vinyl amide-containing monomer, a terminal double bond-containing monomer, and any combination thereof, and is present from 55% to 99% by weight of the reactants, and wherein the crosslinker comprises at least two olefinic bonds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.