Polymeric surfactants for improved emulsion and flow properties at low temperatures
US11584898B2 · kind B2 · utility
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Key dates
| Filing date | Oct 16, 2020 |
| Grant date | Feb 21, 2023 |
| Priority date | — |
| Expiry date | Oct 16, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2050/013
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A polymer surfactant for improving engine oil emulsion properties of a lubricating composition mixed with water and/or fuel contamination, particularly at very cold temperatures, is described herein. In approaches, selected polymeric and functionalized compounds can impart both robust emulsion properties and simultaneously deliver good low temperature fluidity for lubricating compositions that may contain residual amounts of water and/or fuel contamination. Lubricating compositions including such surfactants demonstrate robust properties at temperatures down to about −30° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.