LUBRICATING OIL COMPOSITION - JX NIPPON OIL & ENERGY CORP

Title:

LUBRICATING OIL COMPOSITION

Document Type and Number:

Japanese Patent JP2014101526

Kind Code:

A

Abstract:

To provide a lubricant composition enough high in HTHS viscosity at 150°C, enough low in kinetic viscosity at 40°C, kinetic viscosity at 100°C and HTHS viscosity at 100°C, and excellent in low temperature viscosity characteristic.

The lubricating oil composition contains a lubricating oil base oil having a kinetic viscosity at 100°C of 1 to 5 mm²/s, and a viscosity index improver which has a ratio of 0.50 or more of the total area M1 of a peak between 51 and 52.5 ppm of a chemical shift and the total area M2 of the peak between 64 and 66 ppm to the total area of the total peak in spectra obtained by ¹³C-NMR and which has a weight average molecular weight of 200,000 or more. In the lubricating oil composition, the ratio between HTHS viscosity at 150°C and HTHS viscosity at 100°C satisfies a condition represented by the following expression (A). HTHS(150°C)/HTHS(100°C)≥0.53 (A)

Inventors:

MATSUI SHIGEKI
YAGUCHI AKIRA
KUDO REIKO

Application Number:

JP2014046635A

Publication Date:

June 05, 2014

Filing Date:

March 10, 2014

Export Citation:

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Assignee:

JX NIPPON OIL & ENERGY CORP

International Classes:

C10M169/04; C10M101/02; C10M111/04; C10M145/14; C10M171/00; C10N20/02; C10N20/04; C10N30/02; C10N40/25

Domestic Patent References:

JP2008274236A	2008-11-13
JP2007262239A	2007-10-11

Foreign References:

WO2008093446A1	2008-08-07
US20030104955A1	2003-06-05
WO2009007147A1	2009-01-15

Other References:

JPN6015008918; '低粘度潤滑油における粘度指数向上剤の潤滑性向上技術' トライボロジスト第５３巻、第７号, 2008, 第４４９頁-第４５５頁

Attorney, Agent or Firm:

Yoshiki Hasegawa
Yoshiki Kuroki
Yoshinori Shimizu
Hiroyuki Hirano

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