| 摘要 |
PURPOSE:To obtain a hydrophilic lubrication coil capable of easily producing an emulsion having excellent emulsion stability and useful for metal working such as drawing, wire drawing, cutting, grinding, pressing, etc., by introducing a phosphoric acid ester (salt) group to an unsaturated double bond of a polymerized animal or vegetable oil or fat. CONSTITUTION:The objective lubrication oil preferably having a viscosity of 200-600cst at 40 deg.C is produced by introducing a phosphoric acid ester and/or phosphoric acid ester salt group to at least a double bond of a polymerized animal or vegetable oil or fat having unsaturated double bond. The introduction of phosphoric acid ester group can be carried out by introducing a hydroxyl group to a double bond of a polymerized animal or vegetable oil and reacting the hydroxyl group of the resultant hydroxyl compound with phosphoric anhydride, phosphorus trichloride, phosphorus pentachloride, etc. The residual acid radical may be neutralized to a base with an alkali, amine, etc. |
