Novel phosphoramides, lubricating compositions and method of improving wear and extreme pressure characteristics of lubricating oil
US4348291A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 2, 1979 |
| Grant date | Sep 7, 1982 |
| Priority date | — |
| Expiry date | Jul 2, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2050/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel phosphoramides of the formula: ##STR1## wherein: n is 3 to 8; PA1 R.sub.1 is a mono- or di-alkylamine or alkenyl having a total of from 8 to 20 carbon atoms; PA1 R.sub.2 and R.sub.3 are each, independently, alkyl of 1 to 3 carbon atoms; and PA1 X is oxygen or sulfur. The compounds, when combined with a lubricating oil (such as a mineral oil fraction or synthetic ester oil) or grease of appropriate lubricating viscosity are effective in improving the wear or extreme pressure lubricating characteristics of such oils or greases. Lubricating compositions containing such phosphoramides and methods for improving the wear or extreme pressure lubricating characteristics of oils or greases using such phosphoramides are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.