Lubricant with non-terminal functional groups
AssigneeHGST Netherlands B.V.
InventorsXing-Cai Guo, Bruno Marchon, Robert Waltman, Run-Han Wang
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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. The lubricant can also be added to media or other mechanical parts in conjunction with other lubricants.
Claims19
A media disk including:
- a substrate;
- a magnetic recording layer;
- and
- a lubricant, wherein the lubricant includes ZTMD and a second lubricant.
A hard disk drive including:
- a substrate;
- a magnetic recording layer above the substrate;
- and
- a lubricant comprised of lubricant molecules above the magnetic recording layer, wherein at least 3% of the lubricant molecules include at least three functional groups attached to a backbone and at least one of the three functional groups is a non-terminal functional group.
A mechanical device including a movable part subject to wear, wherein said movable part is lubricated with lubricant molecules wherein at least 30% of the lubricant molecules include at least one backbone and at least a first functional group attached to the backbone and wherein the first functional group is a non-terminal functional group.
The mechanical device of claim 19, wherein the at least 30% of the lubricant molecules further include at least eight functional groups, wherein two functional groups are terminal functional groups at a first end of the lubricant molecule, two functional groups functional groups are terminal functional groups at a second end of the lubricant molecule and four functional groups non-terminal functional groups, wherein the at least eight functional groups are attached to the backbone.
Dependencies are inferred from the claim text.