Magnesium overbasing process
US5032299A · kind A · utility
1Cited by
27References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 20, 1989 |
| Grant date | Jul 16, 1991 |
| Priority date | — |
| Expiry date | Jul 20, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M159/24
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process is disclosed for overbasing a substrate comprising mixing a composition comprising said substrate, water, a phenol containing up to three aliphatic carbon atoms, a source of magnesium and a carbonating agent, under reaction conditions to form a magnesium overbased substrate, said water being retained in said composition throughout the overbasing reaction, the weight ratio of the water to magnesium being about 10:1 to about 1:5. A magnesium overbased substrate made by the foregoing process is disclosed. Concentrates and lubricating compositions containing the foregoing magnesium overbased substrate are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.