Lubricant compositions stabilized by mixtures of diarylamine and hydroxydiarylamine antioxidants
US10723969B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Sep 13, 2017 |
| Grant date | Jul 28, 2020 |
| Priority date | — |
| Expiry date | Dec 18, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/25
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Lubricant compositions comprising a lubricating oil and a mixture of one or more alkylated diarylamine and one or more alkylated hydroxydiarylamine exhibit excellent antioxidant and deposit control performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.