| 摘要 |
A dual-layer magnetic recording medium including a non-magnetic substrate having a front side and a back side, a lower support layer formed over the front side and a magnetic upper recording layer formed over the lower layer comprising at least one magnetic particle pigment formed over said lower support layer, at least one of said layers of the front coating comprising a polymer binder system for the pigment, such binder system comprising a hard resin component and a soft resin component, wherein the soft resin component comprises a polyurethane polymer, and the hard resin component comprises a nonhalogenated vinyl copolymer comprising a plurality of pendent nitrile groups, a plurality of pendent hydroxyl groups, and at least one pendent dispersing group.
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