Title:
INTERNAL COMBUSTION ENGINE OIL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2003/008522
Kind Code:
A1
Abstract:
An internal combustion engine oil composition exhibiting detergent action over a long period and being excellent in fuel consumption performance, which comprises (A) a base oil consisting of a mineral and&sol or synthetic oil having a kinematic viscosity of 2 to 8 mm2&sol s at 100 °C and a total aromatic content of 15 % by mass or below, (B) 2 to 15 % by mass of polybutenyl− succinimide having a weight−average molecular weight of 6500 or above and&sol or a derivative thereof, (C) 0.2 to 5 % by mass of a phenol− and&sol or amine−type ashless antioxidant, (D) 0.2 to 15 % by mass of a viscosity index improver having a weight−average molecular weight of 400000 or above, and (E) 0.05 to 3 % by mass of a friction modifier, the percentages specified for the components (B) to (E) being based on the whole of the composition.
Inventors:
YAGUCHI AKIRA (JP)
IGARASHI JINICHI (JP)
IGARASHI JINICHI (JP)
Application Number:
PCT/JP2002/006689
Publication Date:
January 30, 2003
Filing Date:
July 02, 2002
Export Citation:
Assignee:
NIPPON OIL CORP (JP)
YAGUCHI AKIRA (JP)
IGARASHI JINICHI (JP)
YAGUCHI AKIRA (JP)
IGARASHI JINICHI (JP)
International Classes:
C10M129/10; C10M129/54; C10M129/76; C10M133/12; C10M133/56; C10M135/10; C10M135/24; C10M135/30; C10M139/00; C10M159/22; C10M159/24; C10M169/04; C10N10/04; C10N20/02; C10N20/04; C10N30/02; C10N30/04; C10N30/06; C10N30/10; C10N40/25; (IPC1-7): C10M169/04
Foreign References:
| US5744430A | 1998-04-28 | |||
| JP2000063862A | 2000-02-29 | |||
| EP0031236A2 | 1981-07-01 | |||
| JPH07197067A | 1995-08-01 | |||
| GB1451922A | 1976-10-06 | |||
| EP1111028A1 | 2001-06-27 |
Attorney, Agent or Firm:
Morita, Nobuyuki (5-8 Nishi-shimbashi 3-chom, Minato-ku Tokyo, JP)
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