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US 5,178,783 AGranted
N-substituted thio alkyl phenothiazines
AssigneeThe Lubrizol Corporation
InventorMary F. Salomon
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Abstract
This invention describes lubricant compositions comprising phenothiazine derivatives which are N-substituted and which contain an additional sulfur molecule in the N substituent.
Claims13
A composition comprising a major amount of an oil of lubricating viscosity, and a sulfoxide of:
- ##STR6## wherein R.sup.1 is selected from the group consisting of higher alkyl, or an alkenyl, aryl, alkaryl and aralkyl and mixtures thereof;
- R.sup.2 is alkylene, phenothiazine derivatives, alkenylene, and aralkylene and mixtures thereof;
- R.sup.3 and R.sup.4 are independently alkyl, alkenyl, aryl, alkaryl, aralkyl, halogen, hydroxyl, alkoxy, alkythio, arylthio, fused aromatic rings and mixture thereof;
- and a and b are independently 0 or greater.
1 more element
Dependencies are inferred from the claim text.