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Title:
LUBRICATING OIL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2008/047550
Kind Code:
A1
Abstract:
A lubricating oil composition comprising a base oil for a lubricating oil and the following components (A) to (D) contained in the base oil: (A) a fatty acid partial ester compound; (B) (b1) an aliphatic amine compound and/or (b2) an acid amide compound in an amount of 0.5 to 1.5% by mass; (C) a specific benzotriazole derivative in an amount of 0.01 to 0.1% by mass; and (D) a specific succinic acid imide compound in a specified amount. The lubricating oil composition can be used in an internal combustion engine such as a gasoline engine, a diesel engine, an engine utilizing dimethyl ether as a fuel or a gas engine, contains no Mo-based friction reducing agent, is reduced in ash content, phosphorus content and sulfur content, is improved in friction-reducing properties, oxidation stability and a corrosion-preventing activity, and meets the environmental regulations.

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Inventors:
KAMANO HIDEKI (JP)
TESHIMA KAZUHIRO (JP)
Application Number:
PCT/JP2007/068816
Publication Date:
April 24, 2008
Filing Date:
September 27, 2007
Export Citation:
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Assignee:
IDEMITSU KOSAN CO (JP)
KAMANO HIDEKI (JP)
TESHIMA KAZUHIRO (JP)
International Classes:
C10M101/02; C10M169/04; C10M105/06; C10M105/18; C10M105/36; C10M105/38; C10M105/74; C10M107/02; C10M107/08; C10M129/76; C10M133/06; C10M133/08; C10M133/16; C10M133/44; C10M133/56; C10M135/02; C10N20/00; C10N20/04; C10N30/06; C10N30/10; C10N30/12; C10N40/25
Foreign References:
JPH01282296A1989-11-14
JPS52150495A1977-12-14
JPH05239483A1993-09-17
JPS5251407A1977-04-25
JPH06172780A1994-06-21
JPS5776096A1982-05-12
JP2001139978A2001-05-22
JP2000273481A2000-10-03
JP2003238982A2003-08-27
JP2004155891A2004-06-03
JP2005002888A2005-01-06
JP2003252887A2003-09-10
JPH0322438A1991-01-30
JP2004002866A2004-01-08
Other References:
See also references of EP 2077317A4
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (Bridgestone Toranomon Bldg. 6F.,25-2, Toranomon 3-chome, Minato-ku, Tokyo 01, JP)
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