Novel phosphoramides, lubricating compositions and method of improving wear and extreme pressure characteristics of lubricating oil
AssigneeStauffer Chemical Company
InventorKyung S. Shim
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Abstract
Novel phosphoramides of the formula: ##STR1## wherein: n is 3 to 8; R.sub.1 is a mono- or di-alkylamine or alkenyl having a total of from 8 to 20 carbon atoms; R.sub.2 and R.sub.3 are each, independently, alkyl of 1 to 3 carbon atoms; and 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.
Claims7
The compound of the formula:
- ##STR9## wherein:
- n is 3 to 8;
- R.sub.1 is a mono- or di-alkylamine or alkenyl, having a total of from 8 to 20 carbon atoms;
- R.sub.2 and R.sub.3 are each, independently, alkyl of 1 to 3 carbon atoms;
- and
- X is oxygen or sulfur.
The compound having the formula:
- ##STR10##
The compound having the formula:
- ##STR11##
Dependencies are inferred from the claim text.