GREASE COMPOSITION - IDEMITSU KOSAN CO

Title:

GREASE COMPOSITION

Document Type and Number:

WIPO Patent Application WO/2021/200125

Kind Code:

A1

Abstract:

Provided is a grease composition containing a base oil (A), a urea-based thickener (B), a sarcosine derivative (C), and a fatty acid zinc salt (D), wherein: particles including the urea-based thickener (B) in the grease composition satisfy requirement (I); the base oil (A) is a mixed base oil that includes a high-viscosity hydrocarbon-based synthetic oil (A1) having a prescribed kinematic viscosity, a low-viscosity hydrocarbon-based synthetic oil (A2) having a prescribed kinematic viscosity, and an ultrahigh-viscosity hydrocarbon-based synthetic oil (A3) having a prescribed kinematic viscosity and a number-average molecular weight (Mn) of 2,500-4,500; the 40°C kinematic viscosity of the base oil (A) is 500 mm2/s-1,500 mm2/s; the viscosity index of the base oil (A) is 140 or higher; the fatty acid zinc salt (D) content is 10-20 mass% based on the total amount of grease composition; the low-temperature characteristics are exceptional; and stick-slip can furthermore be suppressed.

Inventors:

WATANABE GO (JP)

Application Number:

PCT/JP2021/010665

Publication Date:

October 07, 2021

Filing Date:

March 16, 2021

Export Citation:

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Assignee:

IDEMITSU KOSAN CO (JP)

International Classes:

C10M169/00; C10M107/02; C10M115/08; C10M129/28; C10M129/40; C10M133/16; C10N10/04; C10N20/02; C10N20/04; C10N20/06; C10N30/00; C10N30/08; C10N40/02; C10N40/04; C10N50/10

Domestic Patent References:

WO2017146257A1	2017-08-31
WO2003006590A1	2003-01-23
WO2016125859A1	2016-08-11
WO2017126703A1	2017-07-27
WO2016104010A1	2016-06-30
WO2020179589A1	2020-09-10

Foreign References:

JP2016069409A	2016-05-09
JP2010248442A	2010-11-04
JP2017145284A	2017-08-24
KR20140056920A	2014-05-12
JP2016204623A	2016-12-08
JP2010270864A	2010-12-02

Other References: