Quaternary ammonium sulfur-containing binuclear molybdate salts as lubricant additives
US10590364B2 · kind B2 · utility
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25Claims
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Key dates
| Filing date | Jul 25, 2018 |
| Grant date | Mar 17, 2020 |
| Priority date | — |
| Expiry date | Oct 22, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2050/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to lubricating compositions comprising a compound of Formula I: wherein R1-R4 and R5-R8 are independently selected from the group consisting of hydrocarbyl groups and hydrocarbyl groups containing heteroatoms, such that the total carbon atoms from counterions Q1 and Q2 is from 8 to 76, and molybdate anion (Y) is a binuclear sulfur-containing dianion selected from the group consisting of [Mo2S8O2]2−, [Mo2S9O]2−, [Mo2S10]2, and mixtures thereof, and are present in the lubricating composition in an amount sufficient to provide about 100-15,000 ppm molybdenum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.