Patent ID: 6153295
Filing Date: 2000-11-28
Classification: G11B,Y10S,Y10T

Abstract:
A magnetic recording medium comprising a magnetic layer having a metal magnetic powder comprising at least one of Al, Si, P, Y or rare earth element, and a binder as major components; a non-magnetic layer disposed between a magnetic layer and one surface of non-magnetic support; and a back-coat layer disposed on an opposite surface of the support,said non-magnetic layer comprises a binder which has a vinyl chloride copolymer, a polyurethane resin having a group which contains metal sulfamate as a functional group, and agent, said urethane resin comprises 0.5 to 3 groups containing metal sulfamate per molecule, blending weight ratio of said vinyl chloride copolymer and said polyurethane resin is 30/70 to 70/30, and said curing agent is contained by 10 to 50 weight parts to 100 weight parts of the total of said vinyl chloride copolymer and said polyurethane resin.