Title:
HYDRAULIC FLUID COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2014/157200
Kind Code:
A1
Abstract:
Provided is a hydraulic fluid composition that has a viscosity index of at least 150, and a ratio (A/B) of the kinematic viscosity (A) (units: mm2/s) and shear viscosity (B) (units: mPa·s; shear conditions: 106/s) at 60-80°C of no greater than 1.3, and that contains a lubricant base oil having a kinematic viscosity at 40°C of 15-50 mm2/s and a polymethacrylate having a number average molecular weight of no greater than 48,000 and constituting 1-40 mass% of the entire amount of the hydraulic fluid composition.
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| JP2015083703 | HYDRAULIC COMPOSITION WITH IMPROVED WEAR PROPERTIES |
Inventors:
YAGISHITA KAZUHIRO (JP)
HIRANO TORU (JP)
OSHIO TADASHI (JP)
HIRANO TORU (JP)
OSHIO TADASHI (JP)
Application Number:
PCT/JP2014/058278
Publication Date:
October 02, 2014
Filing Date:
March 25, 2014
Export Citation:
Assignee:
JX NIPPON OIL & ENERGY CORP (JP)
International Classes:
C10M145/14; C10N20/02; C10N20/04; C10N30/00; C10N40/08
Domestic Patent References:
| WO2012132054A1 | 2012-10-04 | |||
| WO2006009083A1 | 2006-01-26 |
Foreign References:
| JP2005154760A | 2005-06-16 | |||
| JP2007197509A | 2007-08-09 |
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
Yoshiki Hasegawa (JP)
Yoshiki Hasegawa (JP)
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