| 摘要 |
<p>PURPOSE:To provide spherical magnetic particles having homogeneity, high saturation magnetization and uniform particle diameter. CONSTITUTION:When magnetic particles are produced by dispersing magnetic powder in resin particles, a polymerizable monomer is mixed with magnetic powder and an org. solvent miscible with the monomer but immiscible with a polymn. medium and the resulting compsn. is subjected to suspension polymn. in the polymn. medium.</p> |
