Abstract:
PROBLEM TO BE SOLVED: To provide a lubricating oil containing phosphorus molybdenum and/or phosphorus molybdenum amine having slight phosphorus content without slowing down the antioxidant performance. SOLUTION: The phosphorus molybdenum represented by general formula (1) can be obtained by reducing and neutralizing a hexavalent molybdenum compound and then reacting the resultant compound with an alkyl acid phosphate. The phosphorus molybdenum amine can be produced by reacting the phosphorus molybdenum with an amine. The composition can especially suitably be used for engine oil and turbine oil. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a lubricant composition being excellent in an anti-oxidation performance since requirement of high performance of the lubricant composition caused by an environment problem or the like in recent years is fulfilled. SOLUTION: The lubricant composition contains 0.01-5 mass% of a compound (B) represented by formula (1) (wherein R 1 -R 6 represent any one of a hydrogen atom, a 1-18C hydrocarbon group or a group represented by -OR 11 , R 7 -R 10 represent any one of a hydrogen atom, a hydroxyl group, a 1-18C hydrocarbon group or a group represented by -OR 11 , R 11 represents a 1-12C hydrocarbon group, and provided that the two adjacent groups selected from R 1 -R 10 are bonded to each other and may form a 5-12C cycloalkyl ring, a cycloalkenyl ring or an aromatic ring) in the lubricant (A) having a phosphorus content of 50-1,500 mass ppm. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a lubricating oil additive that affords an antioxidant attaining both prolongation of the life of a lubricating oil composition and reduction of a specific component such as a metal component or a phosphorus atom, and a lubricating oil composition comprising the same. SOLUTION: The phosphorus-molybdenum compound is represented by general formula (1) (wherein R 1 , R 2 and R 3 are each independently a 1-20C hydrocarbon group). COPYRIGHT: (C)2008,JPO&INPIT