| 摘要 |
PURPOSE:To improve the durability and heat resistance of a magnetic layer without spoiling the dispersibility of magnetic powder, by adding liquid paraffin as a lubricant to magnetic paint which uses a specific compound as a dispersant. CONSTITUTION:A magnetic layer which uses polyalkylene oxide phosphate or its salt as a dispersant for magnetic powder contains liquid paraffin as a lubricant. Said lubricant and dispersant are used favorably by 0.1-5pts.wt. for 100pts.wt. magnetic powder. |
