| 摘要 |
PROBLEM TO BE SOLVED: To obtain a grease composition, capable or remarkably improving the lubrication life at high temperatures and suitable as a bearing, etc., used for high-temperature and high-speed rotation by including a base oil and a thickener containing a specific urea compound therein. SOLUTION: This grease composition comprises (A) a base oil such as a mineral oil or a synthetic hydrocarbon oil and (B) a thickener. A urea compound having an amine structure represented by the formula [R1 and R2 are each a hydrocarbon; R3 is a 6-15C aromatic hydrocarbon; A1 and A2 are each a 6-18C hydrocarbon or a 6-18C aromatic amino represented by R-NH-R'; (n) is >=1] at the terminals is contained in place of at least a part of the thickener. |
