Fluorinated media lubricants with reduced hydrocarbon fraction for data storage devices
AssigneeWestern Digital Technologies, Inc.
InventorsXingliang He, Jianming Wen, Charles Cheng-Hsing Lee
Life of this patent
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Abstract
A highly fluorinated lubricant configured to be adsorbed by an overcoat of a magnetic recording medium. The lubricant may have a structure: where Rf is —CF2O(CF2CF2O)nCF2— where n is from 1 to about 100, or Rf is —CF2CF2O(CF2CF2CF2CF2O)sCF2CF2—, —CF2CF2O(CF2CF2CF2O)sCF2CF2—, —CF2CF2O[CF(CF3)CF2O]sCF2CF2—, —CF2O(CF2CF2O)r(CF2O)sCF2—, or —CF2O(CF2CF2O)CF2—, and r, s are independently from 1 to about 100, and R1 is a fluorinated hydrocarbon having a functional group terminating in —OH.
Claims16
A highly fluorinated lubricant configured to be adsorbed by a magnetic recording medium, comprising:
- where Rf is —CF2O(CF2CF2O)nCF2— where n is from 1 to about 100, or Rf is —CF2CF2O(CF2CF2CF2CF2O)sCF2CF2—, —CF2CF2O(CF2CF2CF2O)sCF2CF2—, —CF2CF2O[CF(CF3)CF2O]sCF2CF2—, —CF2O(CF2CF2O), (CF2O)sCF2—, or —CF2O(CF2CF2O)sCF2—, and r, s are independently from 1 to about 100
- and
- R1 is a fluorinated hydrocarbon having a functional group terminating in —OH.
Dependencies are inferred from the claim text.