Aminated polymeric additives for fuels and lubricants
US4113636A · kind A · utility
20Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1974 |
| Grant date | Sep 12, 1978 |
| Priority date | — |
| Expiry date | Jul 31, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Copolymers, having a degree of crystallinity of 3 up to 25 weight percent, comprising about 68 to 80 mole % ethylene, and one or more C.sub.3 to C.sub.8 alpha-olefins are mechanically degraded at elevated temperatures, in the presence of air or oxygen-containing gas, to form an oxygenated-degraded polymer, which is reacted with an amine compound. Preferably, the polymer is only partially reacted with the amine. The resulting aminated polymers are useful as sludge dispersants for fuels and lubricants. When the aminated polymers have a high molecular weight, they are also useful as viscosity-index improvers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.