| 摘要 |
The present invention provides a lubricant for recording media that does not readily decompose, and which has high adhesion to recording media, and a magnetic disk that is durable against continuous sliding under high-speed rotation. The present invention provides a lubricant for recording media containing: a perfluoropolyether compound represented by Formula (1), R1—CH2CF2O—(CF2CF2O)m—(CF2O)n—CF2CH2—R2  (1) wherein R1 represents R represents a C1-4 haloalkyl group, R2 represents —OCH2CH(OH)CH2OH, and m and n are each independently 1-30; and another perfluoropolyether compound represented by Formula (2), R1—CH2CF2O—(CF2CF2O)m—(CF2O)n—CF2CH2—R3  (2) wherein R1, m and n are as defined above and R3 represents —OCH2CH(OH)CH2OCH2CH(OH)CH2OH. The present invention also provides a magnetic disk having a lubricating layer essentially consists of such a lubricant.
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