Magnetic recording medium
AssigneeTDK Electronics Co., Ltd.
InventorsKiminori Tamai, Masashi Hayama
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Abstract
A magnetic recording medium having a magnetic layer comprises a magnetic powder, a binder, a nonionic or anionic surfactant and a silicone oil having a viscosity of 500 c.s. or lower.
Claims1
In a magnetic recording medium having a magnetic layer which comprises a magnetic powder, a binder and a nonionic or anionic surfactant in an amount of 1.0 to 5.0 wt. % based on said magnetic powder, the improvement comprising within said magnetic layer of 0.5 to 5.0 wt. % based on said binder of a silicone oil of the formula ##STR2## where n is a value such that the viscosity of the silicone oil is 500 c.s. or lower at 25.degree. C., whereby the blooming of the surfactant and the plasticization of the magnetic layer are diminished.
Dependencies are inferred from the claim text.