Patent ID: 8722597
Filing Date: 2014-05-13
Classification: C10M,C10N

Abstract:
1. A lubricating oil composition for an internal combustion engine, comprising as essential components the following component (A), component (B), and component (C), wherein a phosphorus content of the composition is 50 ppm by mass to 1,000 ppm by mass and a molybdenum content of the composition is less than 1,000 ppm by mass: Component (A): at least one mineral oil; Component (B): at least one compound represented by the following formula (1), wherein R Z represents a hydrocarbon group represented by formula (6), formula (7), or formula (8) and n represents a number from 1 to 10, wherein an average of n is 1.06 to 1.4; and Component (C): at least one metal-containing antioxidant selected from the group consisting of (i) a molybdenum dithiocarbamate compound represented by the following formula (3), (ii) a molybdenum dithiophosphate compound represented by the following formula (4), (iii) a molybdenum amine obtained by reacting a hexavalent molybdenum compound with a primary or secondary amine represented by the following formula (5), and (iv) a mixture of a zinc dithiophosphate compound represented by the following formula (2) and the molybdenum dithiocarbamate compound represented by the formula (3), the molybdenum dithiophosphate compound represented by the formula (4) and/or the molybdenum amine obtained by reacting the hexavalent molybdenum compound with the primary or secondary amine represented by the formula (5), wherein R wherein R wherein R wherein R