Lubricants with good TBN retention
US9528068B2 · kind B2 · utility
1Cited by
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12Claims
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Assignee
Inventors
Key dates
| Filing date | Feb 15, 2012 |
| Grant date | Dec 27, 2016 |
| Priority date | — |
| Expiry date | Feb 15, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/25
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A lubricant composition containing a metal-containing detergent in an amount to provide at least about 2 TBN to the lubricant, and a dispersant comprising an oleophilic portion comprising at least about 40 carbon atoms and an acid-bearing portion, characterized in having a TAN:TBN ratio of at least about 0.8, exhibits good TBN retention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.