Stability polymeric lubricants and thin film recording media comprising same
AssigneeSeagate Technology LLC
InventorsJianwei Liu, Michael Joseph Stirniman, Jing Gui
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Abstract
A data/information storage and retrieval medium comprises: (a) a substrate having a layer stack thereon, the layer stack including an outer surface and comprising at least one magnetic or magneto-optical (“MO”) recording layer; and (b) a thin film or layer of a lubricant on the outer surface of the layer stack and comprised of a derivatized perfluoropolyether-based material including at least one generally linear perfluoropolyether chain and at least one phosphite antioxidant/stabilizer moiety attached to at least one end of at least one the chain.
Claims6
A data/information storage and retrieval medium, comprising:
- (a) a substrate having a layer stack thereon, said layer stack including an outer surface and comprising at least one magnetic or magneto-optical (“MO”) recording layer;
- and
- (b) a thin film or layer of a lubricant on said outer surface of said layer stack and comprised of a derivatized perfluoropolyether-based material including at least one generally linear perfluoropolyether chain and at least one organophosphite moiety attached to at least one end of at least one said chain via a chemical bond between a reactive group at said at least one end of said chain and the phosphorus atom of said organophosphite moiety,
- wherein said at least one organophosphite moiety is derived from an organophosphite compound selected from the group consisting of tris (2,4 di-butylphenoxy)phosphite, tris (mono-fluorophenoxy)phosphite, and tris (mono-trifluoromethylphenoxy)phosphite.
Dependencies are inferred from the claim text.