Process for preparing stable oleaginous compositions
US4938880A · kind A · utility
34Cited by
22References
67Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 26, 1987 |
| Grant date | Jul 3, 1990 |
| Priority date | — |
| Expiry date | May 26, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
According to the present invention, oleaginous compositions having improved stability are provided, wherein high molecular weight ashless dispersants and metal detergents are pre-blended at a temperature of at least 100.degree. C. for a period of from 1 to 10 hours, cooled to at least 85.degree. C. and admixed with additional additives, including oil soluble copper antioxidants and zinc dialkyl dithiophosphate antiwear agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.