Lubricating oil compositions containing a polyoxyalkylene carboxylic acid salt additive
US5250203A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1992 |
| Grant date | Oct 5, 1993 |
| Priority date | — |
| Expiry date | Feb 12, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Oil based compositions are disclosed which are comprised of oil having a multi-functional additive component therein. The additive component is present in sufficient amounts so as to provide improved performance characteristics to the composition such as water tolerance and antiwear characteristics. The additive is a compound represented by the general structural formula (I): ##STR1## wherein R is a hydrocarbyl, preferably iso-stearyl, R.sub.1, R.sub.2, and R.sub.3 are independently hydrogen or alkyl, preferably hydrogen, n is 1 to 20, preferably 5, and X is a cation, preferably Ca. Overbased and mixed salts of the additive compound are also disclosed. The additive is an effective EP agent, water tolerance fix in a variety of functional fluids and lubricating compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.