GREASE COMPOSITION - NOK KLUBER CO LTD

Title:

GREASE COMPOSITION

Document Type and Number:

WIPO Patent Application WO/2008/047595

Kind Code:

A1

Abstract:

A grease composition comprising: a base oil which is at least one of synthetic hydrocarbon oils, synthetic ester oils, and synthetic ether oils; a thickener which is at least one of lithium soaps, composite lithium soaps, and urea compounds; a powder of a polytetrafluoroethylene resin having a number-average molecular weight (Mn) of 20,000-100,000; and a zinc dialkyl dithiophosphate having a linear or branched alkyl group having 3 or more, preferably 5-13, especially preferably 8-12 carbon atoms. Even when applied to a resinous member, this grease composition not only has excellent lubricity but has excellent durability in terms of change in coefficient of friction and wear amount after a sliding test.

Inventors:

SAWAGUCHI WATARU (JP)
NITTA TOSHIO (JP)

Application Number:

PCT/JP2007/069271

Publication Date:

April 24, 2008

Filing Date:

October 02, 2007

Export Citation:

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Assignee:

NOK KLUBER CO LTD (JP)
SAWAGUCHI WATARU (JP)
NITTA TOSHIO (JP)

International Classes:

C10M169/04; C10M105/18; C10M105/36; C10M105/38; C10M107/02; C10M107/08; C10M115/04; C10M115/08; C10M115/12; C10M117/02; C10M117/06; C10M117/08; C10M137/10; C10M147/02; C10N10/02; C10N10/04; C10N30/06; C10N40/04; C10N50/10

Foreign References:

JP2005281457A	2005-10-13
JPS5582196A	1980-06-20
JP2000303087A	2000-10-31
JPH08120289A	1996-05-14
JPH09324190A	1997-12-16
JP2000230188A	2000-08-22
JPS6253399A	1987-03-09
JP2006182923A	2006-07-13
JP2002363589A	2002-12-18
JP2004256665A	2004-09-16

Other References: