LUBRICANT COMPOSITION FOR INTERNAL COMBUSTION ENGINE

Title:

LUBRICANT COMPOSITION FOR INTERNAL COMBUSTION ENGINE

Document Type and Number:

Japanese Patent JP2010090255

Kind Code:

A

Abstract:

To provide a lubricant composition for an internal combustion engine which is improved in all of viscosity-temperature characteristic, low-temperature viscosity characteristic and wear resistance in a high level and in a well-balanced state, and can effectively achieve fuel cost saving effect.

The lubricant composition for the internal combustion engine comprises a lubricant base oil having a urea adduct value of 4 mass% and a viscosity index of 100 and a poly(meth)acrylate having a weight-average molecular weight of 200,000-400,000.

Inventors:

TAGAWA KAZUO

Application Number:

JP2008261078A

Publication Date:

April 22, 2010

Filing Date:

October 07, 2008

Export Citation:

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Assignee:

NIPPON OIL CORP

International Classes:

C10M169/04; C10M101/02; C10M105/04; C10M145/14; C10N20/02; C10N20/04; C10N30/02; C10N30/06; C10N30/08; C10N40/25

Domestic Patent References:

JPS4825003A	1973-04-02
JPS30624B1
JP2007246661A	2007-09-27
JP2006241437A	2006-09-14
JPS4825003A	1973-04-02
JPS30624B1

Foreign References:

US2861941A	1958-11-25
US2890161A	1959-06-09
US3078222A	1963-02-19
US2861941A	1958-11-25
US2890161A	1959-06-09
US3078222A	1963-02-19

Other References:

JPN6012060552; '尿素付加法により石油の中質留分および重質留分から分離されるｎ-パラフィン中のモノメチルパラフィン成分' 石油学会誌第１８巻第６号５９-６４頁, 1975
JPN6012060552; '尿素付加法により石油の中質留分および重質留分から分離されるｎ-パラフィン中のモノメチルパラフィン成分' 石油学会誌第１８巻第６号５９-６４頁, 1975

Attorney, Agent or Firm:

Yoshiki Hasegawa
Yoshiki Kuroki
Yoshinori Shimizu

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