| 摘要 |
PURPOSE:To remove the attached material such as iron sand from the surface of a magnet, etc., without damaging the surface, by wiping the surface with an oil paste of silicon dioxide, etc. and bentonite. CONSTITUTION:Fine powders of SiO2, Al2O3, Fe2O3 and/or other oxides are mixed with bentonite. The mixture is kneaded with oil, optionally in the presence of a small amount of a surface active agent such as a lauric acid salt (derivative) to obtain the objective agent in the form of semi-rigid or viscous paste. |
