MAGNETIC RECORDING MEDIUM

摘要

PURPOSE:To form a magnetic recording medium having excellent running stability and durability by forming a lubricative coating layer consisting of the cured matter of a specific fluoropolymer. CONSTITUTION:The lubricative coating layer consisting of the cured matter of the fluoropolymer having a fluoroalkyl group and hydrolyzable functional group or silyl group having halogen atoms is provided on the front of a thin ferromagnetic film or the rear surface of a substrate after said thin film is provided as a magnetic layer on the substrate. The effect of a low friction characteristic and excellent corrosion resistance is developed by the fluoroalkyl group and the polymer is crosslinked and cured by the hydrolyzable functional group or silyl group having halogen atoms, by which the toughness, wear resistance and the adhesiveness to the magnetic layer, etc. are improved. A protective layer may be provided of this polymer alone or in conjunction with other surface treating agents.