| 摘要 |
PURPOSE:To obtain the subject oil, containing respective specific aniline-based amine compound and aralkylamine-based compound, excellent especially in antimicrobial properties against yeasty fungi, suppressing occurrence of putrefying smell even in use thereof for a long period and sufficiently usable in a small amount. CONSTITUTION:The objective oil containing an amine (derivative) expressed by formula I or II (R1 to R7 are 1-10C alkyl, alkenyl, cycloalkyl, alkylaryl, aralkyl, aryl, hydroxyalkyl or alkoxy; R8 is 1-4C alkyl). Furthermore, the concentration of the above-mentioned amine compound in a coolant is preferably 0.001-1wt.%. |
