To provide a lubricant for a magnetic disc, which is preferably used in a magnetic disc placed in a magnetic recorder operating on a heat assist magnetic recording mode and is excellent in heat resistance; and to provide a magnetic disc including a lubricant layer containing this lubricant.
The lubricant for a magnetic disc contains a compound in which perfluoropolyether groups that have perfluoropolyether backbones in structures and have phosphazene ring in terminals are bound to each other through a linking group. The linking group is an aliphatic group or a phosphazene ring. In the magnetic disc including a magnetic recording layer, a protective layer and the lubricant layer on a substrate, the lubricant layer contains the lubricant for a magnetic disc.
HAMAKUBO KATSUSHI
JP2002275484A | 2002-09-25 | |||
JP2002294266A | 2002-10-09 | |||
JP2010006810A | 2010-01-14 |
WO2001021630A1 | 2001-03-29 |
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