Protective layer for magnetic recording media

Details Protective layer for magnetic recording media Protective layer for magnetic recording media

G - Physics

11

B

117/143, 352/31,

G11B 5/71 (2006.01) G11B 5/72 (2006.01) G11B 5/725 (2006.01)

Patent

CA 2020381

ABSTRACT OF THE DISCLOSURE A two-layer protective coating covers a metallic thin film magnetic recording medium of a magnetic recording element. The two-layer protective coating comprises a primer layer proximal to the metallic thin film magnetic recording medium. The primer layer comprises an amino functional alkoxy silane and a copolymerisable monomer. The copolymerisable monomer comprises a plurality of vinyl groups. The two-layer protective coating also comprises a lubricant layer distal from the metallic thin film magnetic recording medium. The lubricant layer comprises a functional perfluoropolyether.

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