Alkoxylated phosphate esters for lubricant compositions
US11518956B2 · kind B2 · utility
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5References
16Claims
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Key dates
| Filing date | Dec 13, 2016 |
| Grant date | Dec 6, 2022 |
| Priority date | — |
| Expiry date | Feb 27, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/245
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention concerns a composition suitable for working and shaping metals, in particular providing a lubricating effect, including polymers of the following formula: [R—O(—CH(CH3)—CH2O—)n(CH2—CH2O—)p—]1+xP(═O)(OH)2-x in which: R is a linear or branched, preferably linear, saturated or unsaturated hydrocarbon group, comprising between 8 and 12 carbon atoms; n is a number, which may or may not be an integer, between 6 and 20; p is a number, which may or may not be an integer, between 4 and 25; and x is a number between 0 and 1, and in particular between 0.1 and 0.9.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.