Stabilized friction reducer emulsions
US11912934B2 · kind B2 · utility
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4References
8Claims
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Key dates
| Filing date | Mar 11, 2020 |
| Grant date | Feb 27, 2024 |
| Priority date | — |
| Expiry date | Jul 31, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The instant invention friction reducer formulation comprising friction reducer polymers such as PAM within the dispersed phase of an inverse emulsion containing a composition C which comprises a mixture of: —at least an alkanolamide emulsifier; and —a block copolymer comprising: —a hydrophilic block A comprising units deriving from a mono-alpha-ethylenically-unsaturated monomers; and —a hydrophobic block B.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.