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    • 9. 发明授权
    • Lubricant composition for magnetic recording media
    • 用于磁记录介质的润滑剂组合物
    • US07510999B2
    • 2009-03-31
    • US10856116
    • 2004-05-28
    • Hong DengRobert WaltmanJinliu Wang
    • Hong DengRobert WaltmanJinliu Wang
    • C10M137/16G11B5/725
    • G11B5/725C10M105/50C10M105/56C10M105/74C10M107/38C10M107/44C10M107/48C10M111/02C10M111/04C10M2213/0606C10M2215/041C10M2215/0425C10M2223/08C10N2240/204
    • A lubricant composition is provided comprising a first liquid lubricant and a second liquid lubricant, wherein the first liquid lubricant contains a cyclotriphosphazene ring attached to at least one perfluoropolyether having a single terminal hydroxyl group, and the second liquid lubricant contains a perfluoropolyether having two end groups selected from hydroxyl, tertiary amine, and combinations thereof. A magnetic recording media is also provided, comprising a substrate, a magnetic layer, an overcoat layer and a lubricant layer thereon, wherein the lubricant layer is formed from the lubricant composition. A further aspect of the invention concerns a method of making a magnetic recording media comprising forming a magnetic layer on a substrate; forming a protective overcoat layer on the magnetic layer; and forming a lubricant layer on the surface of the overcoat layer by applying the lubricant composition to the surface of the overcoat layer. The lubricant composition is useful for magnetic recording media, especially for magnetic storage hard disk drives, and provides improvements such as substantially reduced lubricant thickness variations when applied to a surface of a hard disk drive.
    • 提供一种润滑剂组合物,其包括第一液体润滑剂和第二液体润滑剂,其中所述第一液体润滑剂含有连接至至少一个具有单末端羟基的全氟聚醚的环三磷腈环,并且所述第二液体润滑剂含有具有两个端基的全氟聚醚 选自羟基,叔胺及其组合。 还提供了一种磁记录介质,其中包括基材,磁性层,外涂层和润滑剂层,其中润滑剂层由润滑剂组合物形成。 本发明的另一方面涉及一种制造磁记录介质的方法,包括在基底上形成磁性层; 在所述磁性层上形成保护性外涂层; 以及通过将润滑剂组合物施加到外涂层的表面,在外涂层的表面上形成润滑剂层。 润滑剂组合物可用于磁记录介质,特别是用于磁存储硬盘驱动器,并且提供改进,例如当应用于硬盘驱动器的表面时实质上减少的润滑剂厚度变化。