Title:
GREASE COMPOSITION AND USE OF GREASE COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2019/131437
Kind Code:
A1
Abstract:
Provided is a grease composition that contains (A) a mixed base oil which contains (A1) a low viscosity base oil that has a kinematic viscosity of 10-50 mm2/s at 40°C and (A2) a high viscosity base oil that has a kinematic viscosity of 200-700 mm2/s at 40°C, (B) a lithium-based thickening agent and (C) a polymer that has a kinematic viscosity of 1,000-100,000 mm2/s at 100°C. This grease composition has an apparent viscosity of 50-250 mPa·s at -10°C as measured at a shear rate of 10 s-1 in accordance with JIS K2220 (2013). Consequently, this grease composition has excellent pressure feed properties, while exhibiting excellent wear resistance under poor lubrication conditions.
Inventors:
WATANABE GO (JP)
Application Number:
PCT/JP2018/046989
Publication Date:
July 04, 2019
Filing Date:
December 20, 2018
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
C10M169/06; C10M171/02; C10M117/00; C10M135/02; C10M137/10; C10N10/02; C10N10/04; C10N20/00; C10N20/02; C10N30/06; C10N40/00; C10N40/02; C10N50/10
Domestic Patent References:
| WO2010150726A1 | 2010-12-29 | |||
| WO2018092806A1 | 2018-05-24 |
Foreign References:
| JP2016014108A | 2016-01-28 | |||
| JP2000230188A | 2000-08-22 | |||
| JP2017133154A | 2017-08-03 |
Other References:
See also references of EP 3733823A4
Attorney, Agent or Firm:
HIRASAWA, Kenichi et al. (JP)
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