| abstract |
(57) [Summary]nA polymer binder system useful for magnetic recording media, comprising a hard resin component containing a non-halogenated vinyl copolymer and a soft resin component containing a polyurethane having a phosphonate diester group. The binder system is useful for making a magnetic layer and / or backside coating of a magnetic recording medium to provide a medium that exhibits a combination of improved modulus, Tg, and smoothness. |