基本信息:
- 专利标题： LUBRICANT OIL COMPOSITION
- 申请号：EP15759206 申请日：2015-03-04
- 公开(公告)号：EP3115444A4 公开(公告)日：2017-11-01
- 发明人： KASAI MORITSUGU , TAMURA KAZUSHI
- 申请人： IDEMITSU KOSAN CO
- 专利权人： IDEMITSU KOSAN CO
- 当前专利权人： IDEMITSU KOSAN CO
- 优先权： JP2014041897 2014-03-04
- 主分类号： C10M161/00
- IPC分类号： C10M161/00 ; C10M129/66 ; C10M129/68 ; C10M129/95 ; C10M133/04 ; C10M133/16 ; C10M133/56 ; C10M139/00 ; C10M143/00 ; C10M145/14 ; C10N10/04 ; C10N20/02 ; C10N20/04 ; C10N30/00 ; C10N30/06 ; C10N40/02 ; C10N40/25
摘要：
Provided is a lubricating oil composition favorable for reducing friction in a sliding mechanism equipped with a piston ring and a liner, in a device having the sliding mechanism. The lubricating oil composition contains a lubricant base oil, (1) a polymethacrylate and/or an olefin copolymer having a mass-average molecular weight of 100,000 to 600,000, and (2) an ester-type ashless friction modifier and/or an amine-type ashless friction modifier, and has a shear viscosity at 150°C of 2.3 mPa· or more and less than 3.7 mPa·s.