| 摘要 |
PROBLEM TO BE SOLVED: To obtain a lubricating oil composition exhibiting no satin-like surface caused by oil film fracture of a lubricating oil film on the worked surface of a plastic working product of aluminum even in application to production of a plastic working product of aluminum of a much larger shape, for example, fins of a large-sized air conditioner for business use. SOLUTION: The lubricating oil composition comprises (a) 100 parts wt. of an isoparaffin that contains no olefin-based hydrocarbon and has 68-330°C distillation temperature range and 0.30-15.8 mm<SP>2</SP>/s kinematic viscosity at 40°C and (b) 0.02-1.5 parts wt. of a methacrylic acid ester selected from lauryl methacrylate, myristyl methacrylate, stearyl methacrylate and behenyl methacrylate. COPYRIGHT: (C)2005,JPO&NCIPI |
