GREASE COMPOSITION FOR SPEED REDUCER PART OF ON-VEHICLE ELECTRIC COMPONENT

Title:

GREASE COMPOSITION FOR SPEED REDUCER PART OF ON-VEHICLE ELECTRIC COMPONENT

Document Type and Number:

WIPO Patent Application WO/2021/075553

Kind Code:

A1

Abstract:

The present invention provides a grease composition for a speed reducer part of an on-vehicle electric component, said grease composition containing a base oil and a thickener, wherein: the base oil is poly-α-olefin or a mixed oil of poly-α-olefin and mineral oil and has a kinetic viscosity at 100°C of 4-19 mm2/s and a flow point of -30°C or lower; and the thickener is a mixture of a diurea compound represented by formula (1) and a diurea compound represented by formula (2). R1-NHCONH-R2-NHCONH-R1 (1) R3-NHCONH-R2-NHCONH-R3 (2) (In the formulae, R1 is a straight-chain alkyl group having 8 or 18 carbon atoms, R2 is a divalent aromatic hydrocarbon group having 6-15 carbon atoms, and R3 is an aryl group having 6-7 carbon atoms.) The grease composition has a consistency of 220-280.

Inventors:

YAMAZAKI SATOSHI (JP)
NAGASAWA YOSHIYUKI (JP)
TSUTSUI DAISUKE (JP)
NAKAMURA OSAMU (JP)
YOSHIDA HIOROYUKI (JP)
ISHIZEKI TSUBASA (JP)

Application Number:

PCT/JP2020/039112

Publication Date:

April 22, 2021

Filing Date:

October 16, 2020

Export Citation:

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Assignee:

KYODO YUSHI (JP)
MITSUBA CORP (JP)

International Classes:

C10M169/02; C10M101/02; C10M107/02; C10M115/08; C10N20/00; C10N20/02; C10N30/00; C10N40/00; C10N40/02; C10N40/04; C10N50/10

Domestic Patent References:

WO2007007664A1	2007-01-18
WO2016114387A1	2016-07-21
WO2006095809A1	2006-09-14

Foreign References:

JP2002371290A	2002-12-26
JP2004250481A	2004-09-09
JPH10273692A	1998-10-13
JP2014501292W

Other References: