| 摘要 |
PURPOSE:To attain to enhance washing effect and to shorten a washing time by a method wherein a matter to which oil or fats are adhered is washed by a liquid comprising two layers of a kerosene type solvent layer and a surfactant layer and, subsequently, washed by water. CONSTITUTION:Various kinds of machineries or parts thereof to which liquid, semi-solid and solid oil or fats used as a lubricant and a surface treating agent are adhered are washed by a liquid comprising two layers of a kerosene type solvent layer and a surfactant layer. As the kerosene type solvent, kerosene, light oil or a mixture thereof are used. The surfactant is used by dissolving a synthetic detergent of an anionic type, a cationic type, an amphoteric type or a nonionic type or a mixture thereof in water. Subsequently, said machineries or parts are washed by water. |
