发明名称 |
Lubricant for magnetic disk and magnetic disk |
摘要 |
A lubricant for a magnetic disk that is excellent in heat resistance and is suitably used in a magnetic disk to be mounted on a magnetic recording device of a thermally assisted magnetic recording system and a magnetic disk provided with a lubricant layer containing this lubricant. The lubricant for a magnetic disk contains a compound where perfluoropolyether groups each having a perfluoropolyether main chain in its structure and a phosphazene ring at an end are linked to each other through a linking group. The linking group is an aliphatic group or a phosphazene ring. In a magnetic disk having at least a magnetic recording layer, a protective layer, and a lubricant layer on a substrate, the lubricant layer contains the lubricant for a magnetic disk. |
申请公布号 |
US8999534(B2) |
申请公布日期 |
2015.04.07 |
申请号 |
US201013386343 |
申请日期 |
2010.06.22 |
申请人 |
WD Media (Singapore) Pte. Ltd. |
发明人 |
Shimokawa Koichi;Hamakubo Katsushi |
分类号 |
G11B5/66;G11B5/725;C10M105/74;C10M107/38;C10M107/48 |
主分类号 |
G11B5/66 |
代理机构 |
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代理人 |
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主权项 |
1. A lubricant for a magnetic disk comprising a compound represented by the following Formula (3): wherein R represents and wherein m and n each represents an integer of 1 or more. |
地址 |
Singapore SG |