| 摘要 |
A grease composition for automobile constant velocity joints is provided to improve extreme pressure and frictional reduction by using a mixture of refined paraffin mineral oil, urea-based thickener, more than two molybdenum-based additives, and a 2,5-dimercapto-1,3,4-thiadiazole compound. The grease composition for automobile constant velocity joints comprises: (a) base oil; (b) a urea-based thickener represented by the following formula 1 (R1NH-CO-NH-C6H4-p-CH2-C6H4-p-NH-CO-NHR2); (c) molybdenumdialkyldithiocarbamates; (d) an organic molybdenum complex; (e) zincdialkyldithiophosphates; (f) a 2,5-dimercapto-1,3,4-thiadiazole compound; and (g) a sulfur-based fatty ester. In the formula 1, R1 and R2 each is independently or simultaneously a 6- or 7-membered aromatic hydrocarbon, a cyclohexyl group, or a C6-C20 aliphatic hydrocarbon.
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