Lubricant with non-terminal functional groups
AssigneeHitachi Global Storage Technologies Netherlands B.V.
InventorsJohn Martin Burns, Malika D. Carter, Xing-Cai Guo, Bruno Marchon, Robert Waltman
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Abstract
Lubricant with non-terminal functional groups. The location of the functional groups minimizes free chain length and molecular weight of a lubricant while simultaneously maximizing evaporation temperature. The locations of the functional groups to the backbone of the molecule of the lubricant allows for shorter lengths of free backbone length between functional groups attached to a lubricated surface. The lubricant lubricates mechanical devices including hard disk drives.
Claims18
A lubricant molecule including:
- at least one backbone and at least a first functional group attached to the backbone and a second functional group attached to the backbone, wherein the first functional group and the second functional group are non-terminal functional groups.
A hard disk drive including:
- a substrate;
- a magnetic recording layer above the substrate;
- and
- a lubricant comprised of molecules above the magnetic recording layer, wherein at least 2% of the lubricant molecules includes at least four functional groups attached to a backbone and at least two of the four functional groups are non-terminal functional groups.
A mechanical device including a movable part subject to wear, wherein said movable part is lubricated with lubricant molecules with at least one backbone and at least a first functional group attached to the backbone and a second functional group attached to the backbone and wherein the first functional group and the second functional group are non-terminal functional groups.
Dependencies are inferred from the claim text.