Oxidation resistance of lubricant with modified epoxide-based linkages
AssigneeWestern Digital Technologies, Inc.
InventorsHantao Zhou, Daniel Demori Maksuta, Ao Fan, Jianming Wen, Charles Cheng-Hsing Lee
Life of this patent
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Abstract
Lubricants with epoxide-based linkages for Heat Assisted Magnetic Recording (HAMR) are provided. Epoxide chemistry produces one such lubricant for magnetic media according to general formula (Ia): where Dn is —(CF2CF2CF2O)n—, R1, R2, R3, R4, R5 and R6 independently comprise single or branched non-fluorinated or fluorinated C1-C10 alkyl, C1-C10 alkoxy, benzene, naphthalene, anthracene, phenanthrene, dibenz[a,h]anthracene, pyrene or benzopyrene, with n being from 2 to 50.
Claims20
An epoxide based lubricant according to one of general formulas (Ia) to (Id):
- where Dn is —(CF2CF2CF2O)n—,
- (C2)n is —(CF2CF2O)n—,
- Kn is —(CF2CF(CF3)O)n—,
- Zn is —(CF2CF2O)x(CF2O)y,
- R1, R2, R3, R4, R5 and R6 independently comprise single or branched non-fluorinated or fluorinated C1-C10 alkyl, C1-C10 alkoxy, benzene, naphthalene, anthracene, phenanthrene, dibenz[a,h]anthracene, pyrene or benzopyrene, with n, x and y each independently being from 2 to 50.
An epoxide based lubricant according to one of general formulas (Ie) to (Ih):
- where Dn is —(CF2CF2CF2O)n—,
- (C2)n is —(CF2CF2O)n—,
- Kn is —(CF2CF(CF3)O)n—,
- Zn is —(CF2CF2O)x(CF2O)y,
- R1, R2, R3, R4, R5 and R6 independently comprise single or branched non-fluorinated or fluorinated C1-C10 alkyl, C1-C10 alkoxy, benzene, naphthalene, anthracene, phenanthrene, dibenz[a,h]anthracene, pyrene or benzopyrene, with n, x and y each independently being from 2 to 50.
An epoxide based lubricant according to general formula (Ia):
- where Dn is —(CF2CF2CF2O)n—,
- R1, R2, R3, R4, R5 and R6 independently comprise single or branched non-fluorinated or fluorinated C1-C10 alkyl, C1-C10 alkoxy, benzene, naphthalene, anthracene, phenanthrene, dibenz[a,h]anthracene, pyrene or benzopyrene, with n being from 2 to 50.
Dependencies are inferred from the claim text.