Nitrogen-containing ashless dispersants and lubricating oil composition containing same
US4401581A · kind A · utility
10Cited by
11References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1982 |
| Grant date | Aug 30, 1983 |
| Priority date | — |
| Expiry date | Mar 15, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Lubricating oil dispersants are made by reacting an (a) alkenyl succinic anhydride, (b) an alcohol (e.g. pentaerythritol), (c) a hydroxy-substituted amine (e.g. tris-hydroxymethylaminomethane, (d) a polyoxyalkyleneamine, and (e) an alkenyl succinimide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.