| 摘要 |
PURPOSE:To improve seizing and wearing resistances and reduce friction by incorporating a specific friction modifier and an anti-wearing agent into a base oil mixture. CONSTITUTION:A base oil mixture comprising 50-85wt.% poly(alkylene glycol) having a kinematic viscosity at 100 deg.C of 5-150mm<2>/s and 50-15wt.% organic acid ester having a kinematic viscosity at 100 deg.C of 2.5-50mm<2>/s is mixed with 0.2-4wt.% at least one friction modifier selected from among oxymolybdenum organophosphorodithioate sulfide, oxymolybdenum dithiocarbamate sulfide, and a sorbitan ester and 0.5-3wt.% at least one anti-wearing agent selected from among zinc dialkyldithiophosphates represented by formula I (wherein R1 to R4 each is a 3-8C prim. alkyl or a 3-6C sec. alkyl), tri(alkylphenyl) phosphates represented by formula II (wherein R1 to R3 each is a phenyl substituted with a 4-7C alkyl), and tri(alkylphenyl) phosphorothioates represented by formula III (wherein R1 to R3 each is a phenyl substituted with a 4-7C alkyl). |
