Synthetic ester lubricating oil composition

Abstract

Abstract SYNTHETIC NEUTRAL SATURATED CARBOXYLIC ACID ESTER LUBRICATING OILS SUCH AS THE DIBASIC ACID ESTERS, POLYBASIC ACID ESTERS, DIESTER-COMPLEX ESTERS, AND THE TRI AND TETRAESTERS OF POLYGLYCOLS WITH MONO OR DIBASIC ACIDS ARE IMPROVED ESPECIALLY AS TO THEIR SUPERSONIC TURBINE ENGINE PERFORMANCE BY INCORPORATING THEREINTO A METAL PASSIVATOR WHICH IS AN ANTHRANILAMIDE-TYPE COMPOUND HAVING THE FORMULA: (R5,(R3-N(-R4)-)CYCLOHEXYL)-CO-N(-R1)-R2 WHEREIN R1 AND R2 AR EACH HYDROGEN, C1-C12 ALKYL, PHENYL, PENALKYL OR CYCLOALKYL, R3 AND R4 ARE EACH HYDROGEN, C1C9 ALKYL, C1-C13 ACYL OR PHENYL, AND R5 IS HYDROGEN, C1C9 ALKYL OR HALO C1-C9 ALKYL. PREFERABLY, THE NUCLEAR AMINO RADICAL IS ORTHO TO THE AMIDE GROUP. AN ARYLAMINE MAY BE ALSO EMPLOYED, AS AN ANTIOXIDANT, IN CONUCTION WITH THE ANTHRANILAMIDE-TYPE COMPOUND. AN ARYLTHIAZINE MAY BE USED IN CONJUCTION WITH THE ANTIOXIDANT. ADDITIONALLY, OTHER ADDITIVES SUCH AS PHOSPHATE ESTERS OR PHOSPHITE ESTERS, DIMER ACIDS (DILINOLEIC ACID) AND THE LIKE ARE ALSO INCORPORATED INTO THE ESTER LUBRICATING OIL FOR THE PURPOSE OF IMPROVING ITS EXTREME PRESSURE, ANTIWEAR AND/OR LOAD CARRYING PROPERTIES. IF DESIRED, STILL FURTHER ADDITIVES MAY BE INCORPORATED FOR THE PURPOSE OF REDUCING ACIDITY OR MINIMIZING ACIDITY INCREASES DURING USAGE OF THE OIL.

Inventors

• 👤 David S Bosniack
• 👤 Stephen J Metro

Bibliographic Details