Title:
LUBRICANT COMPOSITION FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2014/021350
Kind Code:
A1
Abstract:
This lubricant composition for an internal combustion engine is formed by adding an overbased calcium sulfonate and/or an overbased calcium phenate (A) having a TBN of 200 mgKOH/g or more, a predetermined binuclear and/or trinuclear organic molybdenum compound (B), and a polyalkyl (meth)acrylate (C) having an SSI of 30 or less to a lubricant base oil comprising a mineral oil and/or a synthetic oil, wherein the sum of the molybdenum content derived from the binuclear and trinuclear organic molybdenum compound is 0.025 mass% or more relative to the entire composition, the HTHS at 100°C is between 4.0 and 5.0 mPa∙s, the HTHS at 150°C is 2.5 mPa∙s or lower, and the NOACK vapor amount (250°C, one hour) is 15 mass% or less.
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Inventors:
UTAKA TOSHIMASA (JP)
KAMANO HIDEKI (JP)
KAMANO HIDEKI (JP)
Application Number:
PCT/JP2013/070661
Publication Date:
February 06, 2014
Filing Date:
July 30, 2013
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
C10M169/04; C10M135/18; C10M145/14; C10M159/22; C10M159/24; C10N10/12; C10N20/00; C10N20/02
Foreign References:
| JP2011140573A | 2011-07-21 | |||
| JP2008303344A | 2008-12-18 | |||
| JP2008184569A | 2008-08-14 | |||
| JP2008248139A | 2008-10-16 | |||
| JP2007217494A | 2007-08-30 | |||
| JPS62108891A | 1987-05-20 | |||
| JPH0322438B2 | 1991-03-26 | |||
| JP2004002866A | 2004-01-08 |
Other References:
See also references of EP 2883946A4
Attorney, Agent or Firm:
OHTANI, Tamotsu (JP)
Tamotsu Otani (JP)
Tamotsu Otani (JP)
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