Basic ashless additives
US10144897B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | Apr 28, 2015 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | May 3, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2030/52
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A lubricant composition comprising an oil of lubricating viscosity and an N-hydrocarbyl-substituted δ-aminoester or δ-aminothioester provides exhibits basicity and good seal performance. In certain embodiments the N-hydrocarbyl substituent comprises a hydrocarbyl group of at least 3 carbons atoms, with a branch at the 1 or 2 position of the hydrocarbyl chain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.