Lubricant for thin film storage media
AssigneeSeagate Technology LLC
InventorsJianwei Liu, Michael Joseph Stirniman, Jing Gui
Life of this patent
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Abstract
Embodiments relate to lubricants disposed over magnetic storage media, such as rotatable thin film magnetic discs. One embodiment comprises a lubricant compound of a fluoropolyether chain having one or more carbonyl-imide pairs. For example, the carbonyl-imide pair may be located at one end, both ends, and/or in the middle of the fluoropolyether chain.
Claims13
A lubricant composition, comprising a compound selected form the group consisting of Formula CI1—FPE1, Formula CI2—FPE2—CI3, and Formula FPE3—Cl4—FPE4 wherein
- FPE1, FPE2, FPE3, and FPE4 are each a fluoropolyether chain and
- CI1, CI2, CI3, and CI4, are each a carbonyl-imide pair, wherein the nitrogen of the imide group is linked to an alpha position carbon of the carbonyl group and the fluoropolyether chain is attached to carbonyl-imide pair.
A lubricant composition, comprising a compound selected form the group consisting of Formula CI1—FPE1, Formula CI2—FPE2—CI3, and Formula FPE3—CI4—FPE4, wherein each of CI1, CI2 and CI3, are independently selected form the group consisting of
- CI4 is
- wherein
- each R is independently selected from the group consisting of hydrogen, halogen, aqlkyl, haloalkyl, alkenyl, haloalkenyl, alkoxy, haloalkoxy, aryl, haloaryl, arylalkyl, and haloarylalkyl;
- FPE1, FPE3, and FPE4 are independently selected from the group consisting of —OCH2CF2—(O—CF2)p—(O—CF2—CF2)q—OCF2CH2—OH, —OCH2CF2—(O—CF2—CF2)q—(O—CF2)p—OCF2CH2—OH, —(O—CF2)p—(O—CF2—CF2)q—O—CF3, (O—CF2—CF2)q—(O—CF2)p—O—CF3, (O—CF2)p—(O—CF2—CF(CF3))q—O—CF3, —(O—CF2—CF(CF3))q—(O—CF2)p—O—CF3, —(O—CF2—CF2—CF2)p—O—CF2—CF3, —(O—CF2—CF2—CF2)p—O—CF2—CF2—CF3, —(O—CF2—CF(CF3))q—O—CF2—CF2—CF3, and —(O)—(CF(CF3)—CF—O)q—CF2—CF2—CF3;
- FPE2 is —OCH2CF2—(O—CF2)p—(O—CF2—CF2)q—OCF2CH2—O—;
- q is from 1 to 500, and
- p is from 1 to 500.
Dependencies are inferred from the claim text.