Title:
GREASE COMPOSITION, AND LUBRICATION METHOD AND DEVICE FOR SLIDING MECHANISM, USING SAID GREASE COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2020/179589
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a grease composition containing a urea-based thickener that can appropriately maintain the dynamic friction force in a lubrication part. This grease composition contains a base oil (A) and a urea-based thickener (B), wherein the base oil (A) has a kinematic viscosity of at least 100 mm2/s at 40°C, and particles containing the urea-based thickener (B) in the grease composition satisfy the following condition (I). Condition (I): the area-based arithmetic average particle diameter of the particles is at most 2.0 μm as measured by a laser diffraction/scattering method.
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Inventors:
WATANABE GO (JP)
Application Number:
PCT/JP2020/007909
Publication Date:
September 10, 2020
Filing Date:
February 27, 2020
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
C10M169/00; C10M169/02; F16C11/06; C10M115/08; C10M133/04; C10M133/06; C10M133/16; C10M133/54; C10M133/56; C10N20/02; C10N30/06; C10N40/00; C10N50/10
Domestic Patent References:
| WO2016125859A1 | 2016-08-11 | |||
| WO2017126703A1 | 2017-07-27 | |||
| WO2003006590A1 | 2003-01-23 |
Foreign References:
| JP2017115109A | 2017-06-29 | |||
| JP2015147867A | 2015-08-20 | |||
| JP2017149905A | 2017-08-31 | |||
| JP2006089575A | 2006-04-06 | |||
| JP2010248442A | 2010-11-04 | |||
| JPH1121580A | 1999-01-26 | |||
| JP2010270864A | 2010-12-02 |
Other References:
See also references of EP 3936590A4
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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