METAL-WORKING OIL

摘要

PURPOSE:To provide a metal-working oil having a higher lubricity and a higher oxidation resistance than those of conventional metal-working oils consisting of an ester obtd. from an aliph. monohydric alcohol and a fatty acid having at least 20 carbon atoms and no trans-double bond. CONSTITUTION:An ester obtd. from an aliph. monohydric alcohol and a fatty acid component contg 0. 5-30% fatty acid having at least 20 carbon atoms and a trans-double bond is used as a metal-working oil.