Lubricant for magnetic disc, magnetic disc and method of producing the same

Lubricant for magnetic disc, magnetic disc and method of producing the same

A magnetic disk in which at least a magnetic layer, a protective layer, and the lubrication layer are sequentially provided on a substrate, the lubrication layer contains a lubricant compound for a magnetic disk, having a perfluoropolyether main chain in the molecular structure and a structure indic...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: HAMAKUBO KATSUSHI, ITOH KAE, SHIMOKAWA KOICHI
Format: Patent
Sprache:eng
Schlagworte:
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Beschreibung
Zusammenfassung:A magnetic disk in which at least a magnetic layer, a protective layer, and the lubrication layer are sequentially provided on a substrate, the lubrication layer contains a lubricant compound for a magnetic disk, having a perfluoropolyether main chain in the molecular structure and a structure indicated as follows at a position close to the center of the molecule: -0-CH2-CH(OH)-CH2-CH2-CH(OH)-CH2-0- or -0-CH2-CH(OH)-CH(OH)-CH2-0-.