Self-inverting polymer emulsions
US12173146B2 · kind B2 · utility
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32References
16Claims
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Key dates
| Filing date | Mar 30, 2020 |
| Grant date | Dec 24, 2024 |
| Priority date | — |
| Expiry date | Feb 13, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/28
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polymer composition has been developed that provides low viscosity oil-in-water polymer emulsions that release the polymer in the emulsion at a faster rate and without an additional surfactant when the emulsion is added to a hydrocarbon stream. Use of a temperature-sensitive emulsifying surfactant facilitates inversion of the oil-in-water polymer emulsion when applied to a hydrocarbon composition at a temperature sufficiently high to destabilize the emulsion. These compositions are particularly useful as drag reducers for delivery to a subsea flowline via an umbilical line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.