| 摘要 |
PURPOSE:To obtain the subject oil, containing a specific amine (derivative), 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 is obtained by blending an amine (derivative) expressed by the formula [R1 is 5-8C cycloalkyl (or alkyl having the cycloalkyl); R2 and R3 are H, 1-3C alkyl, hydroxyalkyl or 5-8C cycloalkyl] in an amount of preferably 0.001-1wt.% in a coolant. Furthermore, cyclopentylamine, dicyclohexylamine, N,N-dimethylcyclohexylamine, N-cyclohexylethanolamine, cyclohexanemethylamine, etc., are cited as examples of the afore-mentioned amine compounds. |
