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US 2013/0157082 A1Published application
Perfluorinated polyethers (pfpe) as magnetic lubricants
AssigneeHitachi Global Storage Technologies Netherlands B.V.
InventorsHong Deng, Xing-Cai Guo, Vedantham Raman, Robert Waltman, Yu-Chen Wu
Life of this patent
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Abstract
A surface agent includes two end portions and a middle portion disposed between the end portions. The end portions include an anchor group or a truncation group. The anchor group includes at least one surface active functional group. The midsection includes at least one perfluoroalkyl-branched perfluorinated ether unit.
Claims25
A storage device comprising:
- a magnetic media;
- and
- a lubricant disposed on the magnetic media, the lubricant selected from the group comprising the formula:
- Ra—Rb—Rc
- wherein Rb includes
- —[O[CxF2x−y(CzF2z+1)y]n]m—
- wherein x is an integer in the range between 1 and 8, y is an integer between 1 and 2x, z is an integer between 1 and 3, n is an integer between 1 and 6, and m is an integer between 1 and 50;
- and
- wherein at least one of Ra and Rc is selected from an anchor group, or a truncation group.
6 more elements
A coating solution comprising:
- a solvent;
- and
- a surface agent selected from the group comprising the formula:
- Ra—Rb—Rc,
- wherein Rb includes
- —[O[CxF2x−y(CzF2z+1)y]n]m—
- wherein x is an integer in the range between 1 and 8, y is an integer between 1 and 2x, z is an integer between 1 and 3, n is an integer between 1 and 6, and m is an integer between 1 and 50;
- and
- wherein at least one of Ra and Rc is selected from an anchor group, or a truncation group.
6 more elements
A method of manufacturing a storage device, the method comprising:
- dispensing a magnetic media;
- and
- depositing onto the magnetic media at least one lubricant selected from the group comprising the formula:
- Ra—Rb—Rc,
- wherein Rb includes
- —[O[CxF2x−y(CzF2z+1)y]n]m—
- wherein x is an integer in the range between 1 and 8, y is an integer between 1 and 2x, z is an integer between 1 and 3, n is an integer between 1 and 6, and m is an integer between 1 and 50;
- and
- wherein at least one of Ra and Rc is selected from an anchor group, or a truncation group.
6 more elements
Dependencies are inferred from the claim text.