Title:
GREASE COMPOSITION FOR CONSTANT-VELOCITY JOINT AND CONSTANT-VELOCITY JOINT HERMETICALLY FILLED THEREWITH
Document Type and Number:
WIPO Patent Application WO/2023/224006
Kind Code:
A1
Abstract:
This grease composition for a constant-velocity joint contains (a) base oil having a kinematic viscosity of 16.0 mm2/s or higher at 100°C, and a viscosity index of 90 or higher, (b) a diurea-based thickener, e.g., aliphatic diurea, (c) 0.2-2.0 mass% of zinc dialkyldithiophosphate, (d) 0.5-2.0 mass% of oil-insoluble molybdenum dialkyldithiocarbamate, (e) 0.5-3.0 mass% of oil-soluble molybdenum dialkyldithiocarbamate, (f) 1.0-4.0 mass% of zinc dialkyldithiocarbamate, and (g) 0.1-1.5 mass% of benzothiazolethione or a derivative thereof, wherein (f):(g) ranges from 8:1 to 3:1 (mass ratio).
Inventors:
KAWANOUE ZEN (JP)
OGASAWARA SHIN (JP)
OMI HARUNA (JP)
SHINTANI MANABU (JP)
MURAKAMI HIROSHI (JP)
KOHARA MIKA (JP)
KONDO RINA (JP)
OGASAWARA SHIN (JP)
OMI HARUNA (JP)
SHINTANI MANABU (JP)
MURAKAMI HIROSHI (JP)
KOHARA MIKA (JP)
KONDO RINA (JP)
Application Number:
PCT/JP2023/018130
Publication Date:
November 23, 2023
Filing Date:
May 15, 2023
Export Citation:
Assignee:
KYODO YUSHI (JP)
NTN TOYO BEARING CO LTD (JP)
NTN TOYO BEARING CO LTD (JP)
International Classes:
C10M169/06; C10M115/08; C10M135/18; C10M135/36; C10M137/10; F16D3/20; C10N10/04; C10N10/12; C10N30/00; C10N40/04; C10N50/10
Domestic Patent References:
| WO2011142411A1 | 2011-11-17 | |||
| WO2008146909A1 | 2008-12-04 |
Foreign References:
| JP2015160909A | 2015-09-07 | |||
| JP2016044265A | 2016-04-04 | |||
| JP2001520301A | 2001-10-30 | |||
| JP2003165988A | 2003-06-10 | |||
| JP2006283830A | 2006-10-19 | |||
| JP2007302761A | 2007-11-22 | |||
| JPH10273692A | 1998-10-13 |
Attorney, Agent or Firm:
TANAKA Shinichiro et al. (JP)
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