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US 8,628,868 B2Granted
Fluorinated polytetramethylene glycol (PTMG) with diepoxide endgroups as magnetic lubricants
AssigneeHGST Netherlands B.V.
InventorsJohn Martin Burns, Norbert A. Feliss, Xing-Cai Guo, Bruno Marchon, Robert Waltman
Life of this patent
Estimating the term…
Abstract
A surface agent includes two end portions and a middle portion disposed between the end portions. The end portions include a terminal section and a midsection. The terminal section includes at least one surface active functional group. The midsection includes at least one perfluoroethyl ether unit. The middle portion includes at least one perfluorobutyl ether unit.
Claims25
A storage device comprising:
- a component having a magnetic surface;
- and
- at least one media lubricant disposed on the magnetic surface, the at least one media lubricant selected from the group comprising the formula:
- Ra—Rb—Rc,
- wherein Rb includes
- wherein n is at least 1;
- wherein at least one of Ra and Rc is selected from
4 more elements
A coating solution comprising:
- a solvent;
- and
- at least one surface agent selected from the group comprising the formula:
- Ra—Rb—Rc,
- wherein Rb includes
- wherein n is at least 1;
- wherein at least one of Ra and Rc is selected from
4 more elements
A method of manufacturing a storage device, the method comprising:
- dispensing a component having a magnetic surface;
- and
- depositing at least one surface active agent or media lubricant selected from the group comprising the formula:
- Ra—Rb—Rc,
- wherein Rb includes
- wherein n is at least 1;
- wherein at least one of Ra and Rc is selected from
4 more elements
Dependencies are inferred from the claim text.