Calcium neutral and overbased mannich and anhydride adducts as detergents for engine oil lubricants
US9206373B2 · kind B2 · utility
1Cited by
35References
17Claims
0Family size
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Key dates
| Filing date | Jun 12, 2013 |
| Grant date | Dec 8, 2015 |
| Priority date | — |
| Expiry date | Dec 27, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A sulfur-free metal or ammonium salt compound, a method of making the compound, and a lubricant additive concentrate, and lubricant composition containing the compound. The compound is made by reacting a phenolic compound reacted with an aldehyde and an amine, with a compound selected from the group consisting of an acylating agent and an electrophilic compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.