Magnetic recording medium having multiple magnetic layers comprising magnetic particles and polyurethane resins having glass transition temperatures within specified ranges

摘要

A magnetic recording medium is disclosed comprising a non- magnetic support having provided thereon a plurality of magnetic layers containing a ferromagnetic powder dispersed in a binder, wherein the lower magnetic layer closest to the support contains as the binder at least one polyurethane resin having a glass transition temperature (Tg) of from -50. degree. C. to -10° C., and the uppermost magnetic layer contains as the binder at least one polyurethane resin having a glass transition temperature of from more than 40° C. to 100 ° C. P PThe magnetic recording medium of the present invention exhibits excellent running durability as well as electromagnetic conversion characteristics.