Ashless or reduced ash quaternary detergents
US10407641B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Jan 15, 2018 |
| Grant date | Sep 10, 2019 |
| Priority date | — |
| Expiry date | Jan 15, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/25
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A composition of an oil-soluble ionic detergent that does not contribute metal ions to the composition, and which comprises a quaternary non-metallic pnictogen cation and an organic anion having at least one hydrocarbyl group of sufficient length to impart oil solubility to the detergent, the detergent having a total base number (TBN) to total acid number (TAN) ratio of at least 2:1 imparts ash-free basicity to a lubricant composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.