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US 4,785,095 AGranted
N-substituted thio alkyl phenothiazines
AssigneeThe Lubrizol Corporation
InventorMary F. Salomon
Life of this patent
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Abstract
This invention describes phenothiazine derivatives which are N-substituted and which contain an additional sulfur molecule in the N substituent.
Claims11
A composition of the formula:
- ##STR6## wherein R.sup.1 is selected from the group consisting of a higher alkyl of 4 or more carbon atoms, or an alkenyl, aryl, alkaryl, aralkyl, and ##STR7## R.sup.2 is alkylene, alkenylene, or aralkylene;
- R.sup.3 and R.sup.4 are independently alkyl, alkenyl, aryl, alkaryl, aralkyl, halogen, hydroxyl, alkoxy, alkylthio, arylthio, or fused aromatic rings;
- and a and b are independently 0 or greater.
Dependencies are inferred from the claim text.