Concentrates with high molecular weight dispersants and their preparation
US6140279A · kind A · utility
21Cited by
5References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1999 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Apr 9, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Concentrates for lubricating oil compositions are prepared by mixing at elevated temperature:(i) at least one high molecular weight ashless dispersant;(ii) at least one oil-soluble overbased metal detergent; and (iii) at least one other concentrate additive provided that the additive is first mixed with the detergent or the dispersant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.