| 摘要 |
PROBLEM TO BE SOLVED: To obtain a grease composition that is inexpensive, has improved lubricant properties at elevated temperatures and excellent resistance to heat by combining a base oil containing a fluorine oil with a thickener of a urea compound bearing fluorine atoms in its molecular skeleton. SOLUTION: This grease composition is composed of (A) a fluorine oil (a perfluoroether oil or the like) (B) a thickener of a urea compound bearing fluorine atoms in its molecular skeleton, preferably represented by the formula (R1 and R3 are each a 6-30C hydrocarbon; R2 is a 6-15C hydrocarbon; at least one of R1 and R2 contains fluorine atoms). In the component A, lubricants other than the fluorine oil is preferably contained at a weight ratio of 1/99-20/80 (the fluorine oil/the other oils). In a preferred embodiment, the amount of the urea compound of the component B, particularly the compound of the formula, is 20-40 wt.% based on the composition. |
