Additive composition having low temperature viscosity corrosion and detergent properties
US7960324B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2004 |
| Grant date | Jun 14, 2011 |
| Priority date | — |
| Expiry date | Jun 3, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/252
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An additive composition providing improved low temperature viscosity, corrosion and detergent properties when used in lubricating oils for internal combustion engines is presented. The additive composition comprises an unsulfurized carboxylate detergent-dispersant additive having been modified by incorporation of from about 3.2 wt % to 7.5 wt %, based on the total additive composition, of an alkaline earth metal salt of a linear, saturated carboxylic acid having from about 16 to about 20 carbon atoms and wherein the additive composition has a superalkalinization ratio of less than about 1.4:1, a TBN of less than about 200 and a sediment value of less than about 0.2% by volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.