| 摘要 |
PROBLEM TO BE SOLVED: To provide a grease composition not only excellent in lubricating properties but also excellent in durability represented by the change of friction factor and abrasion wear after sliding test even in application to resin elements. SOLUTION: The grease composition comprises a base oil of at least one synthetic hydrocarbon oil, an ester-based synthetic oil and an ether-based synthetic oil, a thickener comprising one of lithium-based soap, lithium-based composite soap and urea-based compound, a tetrafluoroethylene resin powder having a number-average molecular weight Mn of 20,000-100,000, and a zinc dialkyldithiophosphate having a≥3C, preferably a 5-13C especially preferably a 8-12C linear or branched alkyl. COPYRIGHT: (C)2008,JPO&INPIT |
