Polyacrylamide-based symmetric branched polymer surfactant and a process for preparing the same and use thereof
US12331246B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 26, 2021 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | Nov 23, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A polyacrylamide-based symmetric branched polymer surfactant and a process for preparing the same and use thereof are provided. The surfactant has an acrylamide structure unit, an anionic monomer structure unit, an optional non-ionic monomer structure unit, a branched structure unit, and an optional cationic monomer structure unit. The branched structure unit has at least one of structures represented by formula (1) or formula (2):The polymer surfactant can realize both the high viscosity of the aqueous solution and the low oil water interfacial tension, and can be used as the oil displacement agent in the tertiary oil recovery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.