| 摘要 |
PURPOSE:To obtain a magnetic recording medium having superior magnetic characteristics, superior surface smoothness of the magnetic layer and superior durability and contg. magnetic powder with high dispersibility and fillability by hardening a coated film contg. a specified coupling agent and a specified oligomer under radiation so as to produce the magnetic layer. CONSTITUTION:A coated film contg. a titanium coupling agent represented by the general formula, a butadiene oligomer or a deriv. thereof, and magnetic powder, is formed on a substrate and hardened by irradiation to produce a magnetic layer. Besides said oligomer, to the film may be added an oligomer obtd. by bonding acrylic acid or methacrylic acid to a terminal of polyalkylene glycol or polyol by esterification. The preferred amount of the coupling agent to be used is 0.1-10wt% of the amount of the magnetic powder in the magnetic layer. |
