| 摘要 |
PROBLEM TO BE SOLVED: To obtain a press working lubricating oil ensuring cockroach not to intrude into electrical equipment or the like and live and breed therein. SOLUTION: This press working lubricating oil is obtained by incorporating a pyrethroid-based chemical agent having repelling effect against pests including cockroach or the chemical agent formulated with an efficacy enhancer, together with a resin such as acrylic resin, polyurethane, phthalic acid-based alkyd resin or nitrocellulose, into a volatile lubricating oil as a mixture of a 10-14C chain alkyl as the principal agent and 12-16C n- and iso-α-olefins as the essential components. The other objective method for working components including frames for electrical equipment by the use of the above lubricating oil is provided. |
