| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a grease composition excellent in the low torque property and the rust-proofing property. <P>SOLUTION: The grease composition includes (A) a base oil which is a blend oil of a synthetic hydrocarbon oil, and a highly refined mineral oil having a flowing point of ≤-35°C, in a mass ratio of 100:0 to 30:70, (B) a thickener represented by the following formula (1): R<SP POS="POST">1</SP>-NHCONH-R<SP POS="POST">2</SP>-NHCONH-R<SP POS="POST">3</SP>(1) wherein R<SP POS="POST">2</SP>denotes a 6-15C divalent aromatic hydrocarbon group; and R<SP POS="POST">1</SP>and R<SP POS="POST">3</SP>are identical or different, and each denote a cyclohexyl group or a 8-18C straight-chain or branched-chain alkyl group, and [ä(molar number of the alkyl group)/(molar number of the alkyl group+molar number of the cyclohexyl group)}×100]=30 to 100%, and (C) an alkenyl succinic anhydride and/or a zinc organic sulfonic acid. <P>COPYRIGHT: (C)2012,JPO&INPIT |
