Succinimide lubricating oil dispersant
US4686054A · kind A · utility
28Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1986 |
| Grant date | Aug 11, 1987 |
| Priority date | — |
| Expiry date | Jun 24, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B3/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
There is a disclosed an improved lubricating oil dispersant suitable for both gasoline engine and diesel engine lubricating oil, the dispersant being prepared in a sequential process whereby a polyolefin succinic anhydride is reacted first with an alkylene polyamine and subsequently with maleic anhydride of a C.sub.1 -C.sub.18 alkenyl or alkyl succinic anhydride to provide a diimide dispersant having a final mole ratio of 2.3 to 3.0 moles of anhydride per mole of polyamine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.