ORI-inhibited motor fuel composition
US4968321A · kind A · utility
28Cited by
14References
29Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Feb 6, 1989 |
| Grant date | Nov 6, 1990 |
| Priority date | — |
| Expiry date | Feb 6, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L1/2383
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A motor fuel composition which inhibits engine ORI and intake valve deposit formation and sticking comprises a mixture of hydrocarbons boiling in the range of 90.degree. F.-450.degree. F. and (I) the reaction product of a hydrocarbyl-substituted dibasic acid anhydride and a polyoxyalkylene diamine; (II) a polymeric component which is a polyolefin polymer, copolymer, or the corresponding aminated or hydrogenated polymer or copolymer, or mixtures thereof, of a C.sub.2 -C.sub.10 hydrocarbon; (III) a polyalkylene glycol having a molecular weight in the range of 500-2000; and (IV) a lubricating oil composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.