| 摘要 |
<p>PURPOSE:To increase both the degree of orientation and the maximum residual magnetic flux density, by using a specific binder. CONSTITUTION:The magnetic powder is bound to a supporter with use of a binder composed of a vinyl chloride-vinyl acetate copolymer containing >=1.5% maleic acid, the urethane resin like the urethane elastomer or urethane prepolymer and furthermore the polyisocyanate when necessary. Thus a magnetic recording medium is obtained.</p> |
