Title:
GREASE COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2022/211117
Kind Code:
A1
Abstract:
The present invention provides a grease composition which contains (A) a base oil, (B) a urea-based thickening agent and (C) a polymer compound, wherein: particles containing the urea-based thickening agent (B) in the grease composition satisfy the requirement (I) described below; the number average molecular weight (Mn) of the polymer compound (C) is 30,000 or more; and the molecular weight distribution (Mw/Mn) of the polymer compound (C) is 2.20 or less. This grease composition is excellent in terms of reduction of the coefficient of friction at a low velocity under a low load. Requirement (I): The area-based arithmetic average particle diameter of the particles is 2.0 μm or less as determined by a laser diffraction/scattering method.
Inventors:
INDA KEISUKE (JP)
WATANABE GO (JP)
TAKANE KOUJI (JP)
WATANABE GO (JP)
TAKANE KOUJI (JP)
Application Number:
PCT/JP2022/016960
Publication Date:
October 06, 2022
Filing Date:
March 31, 2022
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
C10M169/06; C10M107/06; C10M115/08; C10M143/04; C10M171/04; C10N20/00; C10N20/04; C10N30/06; C10N40/02; C10N50/10
Domestic Patent References:
| WO2016104812A1 | 2016-06-30 | |||
| WO2020179595A1 | 2020-09-10 | |||
| WO2020179589A1 | 2020-09-10 | |||
| WO2020179603A1 | 2020-09-10 | |||
| WO2019044624A1 | 2019-03-07 |
Foreign References:
| JP2017109644A | 2017-06-22 | |||
| JP2011148908A | 2011-08-04 | |||
| JP2018119090A | 2018-08-02 | |||
| JP2006070262A | 2006-03-16 |
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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