Concentrates of lubricant additives
US4502971A · kind A · utility
9Cited by
3References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 14, 1983 |
| Grant date | Mar 5, 1985 |
| Priority date | — |
| Expiry date | Mar 14, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Dispersants and basic magnesium detergents tend to interact when mixed in additive concentrates and in bulk lubricants resulting in an undesirable increase in viscosity. It has been found that this problem may be significantly reduced if the dispersant is prereacted with a basic salt containing an alkali metal such as sodium, preferably in an amount corresponding to at least 0.001 gram atoms alkali metal per 100 grams dispersant. The reaction product may be used in concentrates containing basic magnesium detergents for use in lubricants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.