PURPOSE: To obtain a magnetic recording medium having superior magnetic characteristcs and superior surface smoothness of the magnetic layer and contg. magnetic powder with high dispersibility and fillability by hardening a coated film contg. a specified coupling agent and a specifiec oligomer under radiation so as to produce the magnetic layer.
CONSTITUTION: A coated film contg. a titanium coupling agent represented by the general formula, an oligomer obtd. by bonding acrylic acid or methacrylic acid to both the terminals of the condensation product of bisphenol-A with an alkylene glycol polymer by esterification, and magnetic powder, is formed on a substrate and hardened by irradiation to produce a magnetic layer. The preferred amount of the coupling agent to be used is 0.1W10wt% of the amount of the magnetic powder in the magnetic layer, and that of the oligomer to be used is 20W60wt% of the total amount of the powder and the coupling agent.
JP2764736 | [Title of Invention] Magnetic paint |
JP3538650 | MAGNETIC RECORDING MEDIUM |
JPS5916135 | MAGNETIC RECORDING MEDIUM |
YASUI MASAAKI