▎ 摘　　要

NOVELTY - A high-temperature chain oil composition comprises 0.1-15 %mass, preferably 0.5-10 %mass phenolic compounds (I), 0.1-10 %mass, preferably 0.5-5 %mass thioester, 0.01-10 %mass, preferably 0.1-5 %mass graphene nanoparticles, 0.001-5 %mass, preferably 0.01-3 %mass demulsifier, and main amount of lubricating base oil. USE - High-temperature chain oil composition. ADVANTAGE - The composition has excellent anti-wear performance and anti-oxidation performance. DETAILED DESCRIPTION - A high-temperature chain oil composition comprises 0.1-15 %mass, preferably 0.5-10 %mass phenolic compound of formula (I), 0.1-10 %mass, preferably 0.5-5 %mass thioester, 0.01-10 %mass, preferably 0.1-5 %mass graphene nanoparticles, 0.001-5 %mass, preferably 0.01-3 %mass demulsifier, and main amount of lubricating base oil. R1,R'1 = CnH(2n+m), in which R1 and R'1 are in the meta position or para position with respect to aryl hydroxy; n = 3-30, preferably 10-18; m = 1, -1, 3, or -5, preferably 1 or -1; R2, R'2 = linear or branched 1-8C alkyl, preferably tert-butyl;and R3 = linear or branched 1-6C alkylene, preferably methylene. An INDEPENDENT CLAIM is included for preparation of high-temperature chain oil composition, which involves mixing the above components.