| 摘要 |
A magnetic recording medium having good dispersibility, dispersion stability of a magnetic paint and electromagnetic characteristics, and excellent running durability and still characteristics, comprises a non-magnetic support and a magnetic layer formed thereon which is mainly composed of a magnetic powder and a binder, wherein said binder is a mixture of i) a vinyl chloride copolymer having amine-modified vinyl units and acidic functional group-containing vinyl units in a molecule, ii) a polyurethane resin having a number average molecular weight of 5000 to 25000 (Mn 1), and iii) a polyurethane resin having a number average molecular weight of higher than 25000 to 100000 (Mn 2).
|
