Magnesium overbasing process
US4775490A · kind A · utility
5Cited by
17References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1987 |
| Grant date | Oct 4, 1988 |
| Priority date | — |
| Expiry date | Jul 30, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M159/24
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention describes a process for overbasing a substrate comprising mixing the substrate, water, a phenol, a source of magnesium and a carbonating agent, wherein the water is retained throughout the overbasing reaction and provided further that the weight ratio of the water to the magnesium is in a 10:1 to 1:5 weight ratio, thereby obtaining a magnesium overbased substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.