Sulfonated and sulfurized detergent-dispersant additives for lubricating oils
US4751010A · kind A · utility
7Cited by
5References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 7, 1986 |
| Grant date | Jun 14, 1988 |
| Priority date | — |
| Expiry date | Jul 7, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M159/24
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed are detergent-dispersant additives useful in lubricating oils prepared by neutralizing an alkylphenol sulfonic acid, followed by sulfurizing/over-alkalinizing the salt obtained and then carbonating the resultant salt. Lubricating compositions comprising a lubricating oil and from about 1 to about 30% by weight of the final composition of a detergent-dispersant additive of the invention are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.