Invention Grant
- Patent Title: Lubricant base oil, lubricant composition for internal combustion engine and lubricant composition for driving force transmitting device
- Patent Title (中): 润滑油基础油，内燃机用润滑剂组合物和驱动力传递装置用润滑剂组合物
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Application No.: US11794739Application Date: 2006-01-10
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Publication No.: US09012380B2Publication Date: 2015-04-21
- Inventor: Takashi Sano , Hitoshi Komatsubara , Hisayuki Wada , Osamu Kurosawa , Masaaki Itou , Shigeki Matsui , Masato Takahashi , Kai Fu , Shinichi Shirahama , Izuru Sugiura , Masahiro Taguchi , Shozaburo Konishi
- Applicant: Takashi Sano , Hitoshi Komatsubara , Hisayuki Wada , Osamu Kurosawa , Masaaki Itou , Shigeki Matsui , Masato Takahashi , Kai Fu , Shinichi Shirahama , Izuru Sugiura , Masahiro Taguchi , Shozaburo Konishi
- Applicant Address: JP Tokyo JP Tokyo
- Assignee: Nippon Oil Corporation,Petroleum Energy Center
- Current Assignee: Nippon Oil Corporation,Petroleum Energy Center
- Current Assignee Address: JP Tokyo JP Tokyo
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner, LLP
- Priority: JPP2005-002888 20050107; JPP2005-026808 20050202; JPP2005-028104 20050203; JPP2005-035040 20050210
- International Application: PCT/JP2006/300149 WO 20060110
- International Announcement: WO2006/073198 WO 20060713
- Main IPC: C10M105/02
- IPC: C10M105/02 ; C10M169/04 ; C10M101/02 ; C10M171/00
Abstract:
The lubricating base oil of the invention is characterized by satisfying at least one of the following conditions (a) or (b). (a) A saturated compound content of 95% by mass or greater, and a proportion of 0.1-10% by mass of cyclic saturated compounds among the saturated compounds. (b) The condition represented by the following formula (1). 1.435≦n20−0.002×kv100≦1.450 (1) wherein n20 represents the refractive index of the lubricating base oil at 20° C., and kv100 represents the kinematic viscosity (mm2/s) of the lubricating base oil at 100° C.
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