Lubricant compositions containing a heteroaromatic compound
US9090847B2 · kind B2 · utility
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Key dates
| Filing date | Mar 2, 2012 |
| Grant date | Jul 28, 2015 |
| Priority date | — |
| Expiry date | Jan 12, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/25
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An ashless additive for lubricating oil compositions, lubricating oil compositions and methods for lubricating that are effective to improve the total base number (TBN) of a lubricant composition. The additive is a reaction product of a compound of the formula:with NH3, an alcohol, an amine, or a hydrocarbyl amine, wherein R1 is selected from H, a hydrocarbyl group, the alcohol or amine contains from 1 to about 24 carbon atoms, and the hydrocarbyl amine has a number average molecular weight ranging from about 100 to about 6000.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.