LUBRICATING OIL COMPOSITION FOR DIESEL ENGINE

Title:

LUBRICATING OIL COMPOSITION FOR DIESEL ENGINE

Document Type and Number:

WIPO Patent Application WO/2005/095558

Kind Code:

A1

Abstract:

A lubricating oil composition for diesel engines which has a low ash content, contains no metals, has exceedingly high cleanness, and has excellent antiwear properties. It hence does not impair the performances of an apparatus for exhaust gas treatment. The lubricating oil composition for diesel engines comprises a lube base oil and, incorporated therein, (A) 2-30 mass% succinimide having a number-average molecular weight of 80-500 and an alkenyl or alkyl group or product of boronizing of the succinimide and (B) 0.5-30 mass% succinimide having a number-average molecular weight of 800-3,500 and an alkenyl group or product of boronizing of the succinimide, each amount being based on the composition.

Inventors:

KATAFUCHI TADASHI (JP)

Application Number:

PCT/JP2005/006123

Publication Date:

October 13, 2005

Filing Date:

March 30, 2005

Export Citation:

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Assignee:

IDEMITSU KOSAN CO (JP)
PETROLEUM ENERGY CT A JURIDICA (JP)
KATAFUCHI TADASHI (JP)

International Classes:

C10M169/04; C10M133/00; C10M133/16; C10M133/56; C10M135/20; C10M139/00; C10M141/12; C10N20/00; C10N30/00; C10N30/04; C10N30/06; C10N40/25; (IPC1-7): C10M133/16; C10M139/00; C10M141/12

Foreign References:

JP2002105478A	2002-04-10
JP2003113391A	2003-04-18
JP2003073685A	2003-03-12
JPS59500322A	1984-03-01
JPS63501155A	1988-04-28

Other References: