Magnetic recording medium
AssigneeHitachi Maxell, Ltd.
InventorsHiroshi Zaitsu, Shigeyuki Hosoo
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Abstract
A magnetic recording medium which comprises a base material and a magnetic layer provided on its surface, said magnetic layer comprising metallic magnetic particles, a binder and a salt of lanolin fatty acid wherein the oxidation resistance of the metallic magnetic particles is highly improved and the metallic magnetic particles are in a good dispersion state so that the magnetic recording medium shows an increased maximum magnetic flux density is disclosed.
Claims10
A magnetic recording medium which comprises a base material and a magnetic layer provided on its surface, said magnetic layer comprising metallic magnetic particles, a synthetic resin binder and a salt of lanolin fatty acid in an amount of 0.7 to 5% by weight on the basis of the weight of the metallic particles.
Coated particles useful for the preparation of a magnetic coating composition for magnetic recording media comprising synthetic resin binder and metallic magnetic particles comprising metallic magnetic particles the surfaces of which are coated with a salt of lanolin fatty acid in an amount of 0.7 to 5% by weight on the basis of the weight of the metallic particles.
Dependencies are inferred from the claim text.