Idemitsu Kosan Company, Limited

Yasunori Tomari

Seiichi Shido

Kenji Onodera

Tadashi Katafuchi

Saburo Koyama

Shigeo Hara

Toshio Saito

Hiroo Mitazaki

Tatsuo Nara

A lubricating oil composition for plastic working and a lubricating oil composition for cutting and grinding which contains a straight chain olefin having 6 to 40 carbon atoms. The lubricating oil composition for plastic working or the lubricating oil composition for cutting and grinding provides excellent workability and can give the material worked an excellent finish.

Lubricating oil composition

A lubricating oil for metal working comprises a base oil and a diester of a branched aliphatic dicarboxylic acid having from 12 to 28 carbon atoms and a straight chain aliphatic alcohol having from 1 to 6 carbon atoms. The lubricating oil is excellent in rolling properties and causes no heat scratching, and permits the production of rolled plates having good gloss. These properties are further improved by adding a monoester compound having from 13 to 48 carbon atoms to the above oil.

Lubricating oil for metal working

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Ichihara, Japan

Yasunori Tomari