| 摘要 |
The present invention provides a magnetic recording medium excellent in S/N ratio and durability. The magnetic recording medium is characterized in that a magnetic powder having a relative surface area of at least 35 m2/g and an average adsorption of myristic acid of up to 0.5 mg/m2 in methylethylketone solution of an average concentration of 0.6 g/100 ml, on the one hand, and a magnetic layer comprising a bond having at least one hydrophilic group selected from among SO3M, SO4M, PO4M2 and N+R1R2R3X- and at least one reactive group selected from among hydroxide group, thiol group, amino group and epoxy group, on the other hand, is bridged by at least one briding agent selected from among polyisocyanate, polyamine and polythiol.
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