LUBRICANT COMPOSITION - JX NIPPON OIL & ENERGY CORP

Title:

LUBRICANT COMPOSITION

Document Type and Number:

Japanese Patent JP2011140573

Kind Code:

A

Abstract:

To provide a lubricant composition that has sufficiently low kinetic viscosity at 40°C, kinetic viscosity at 100°C, and HTHS viscosity at 100°C while maintaining HTHS viscosity at 150°C, sufficiently suppresses increase of a friction coefficient in a boundary lubrication region, and is excellent in fuel consumption saving.

The lubricant composition includes a lubricant base oil having kinetic viscosity at 100°C of 1-20 mm2/s, (A) a viscosity index improver having a ratio M1/M2 of 0.20 or more (wherein M1 is the total area of peaks between 36-38 ppm chemical shift relative to the total area of all peaks; and M2 is the total area of peaks between 64-66 ppm chemical shift relative to the total area of all peaks) in a spectrum obtained by 13C-NMR, (B) a friction modifier, and (C) an overbased metal salt obtained by performing overbasing of an oil-soluble metal salt with an alkaline earth metal borate.

Inventors:

MATSUI SHIGEKI
YAGUCHI AKIRA
MUTO AKIO
OSANAGA MARI

Application Number:

JP2010002270A

Publication Date:

July 21, 2011

Filing Date:

January 07, 2010

Export Citation:

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Assignee:

JX NIPPON OIL & ENERGY CORP

International Classes:

C10M169/04; C10M135/18; C10M137/10; C10M139/00; C10M145/14; C10M159/18; C10M159/22; C10N10/04; C10N10/12; C10N20/00; C10N20/02; C10N20/04; C10N30/06; C10N40/25

Domestic Patent References:

JP2002220597A	2002-08-09
JP2002012884A	2002-01-15
JP2009191247A	2009-08-27
JP2002302687A	2002-10-18
JP2004124080A	2004-04-22

Foreign References:

WO2009072524A1

2009-06-11

Attorney, Agent or Firm:

Yoshiki Hasegawa
Yoshiki Kuroki
Yoshinori Shimizu

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