Patent ID: 11898117
Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  G | IPC C  G

Claim 0:
1. A lubricant comprising: a plurality of segments according to general formula (I), (II), or (III):

Re1—Rb1—Rc—Rb2—Re2  (I);

Re1—Rb1—Re2  (II); or

Re1—Rb1-(Rc-Rb2)m—Re2  (III);

wherein Rc, when present, is a divalent linking segment comprising an anchoring functional group engageable with a protective overcoat of a magnetic recording media;
wherein each Rb1 and Rb2, when present, independently comprises a chain segment comprising at least one of a fluoroalkyl ether moiety, a fluoroalkenyl ether moiety, a perfluoroalkyl ether moiety, a perfluoroalkenyl ether moiety, or a combination thereof;
wherein each of Re1 and Re2 independently comprises a substituted or unsubstituted cyclic anchoring functional group engageable with the protective overcoat of a magnetic recording media;
wherein one or more of Re1, Re2, and Rc, independently comprises a cyclic functional group comprising at least one of an alicyclic C3-C50 alkyl radical, an alicyclic C3-C50 alkenyl radical, a heterocyclic C3-C50 radical, an aromatic C5-C50 radical, a polycyclic aromatic C10-C50 radical, a heteroaromatic C5-C50 radical, a cyclotriphosphazine radical, or a combination thereof;
wherein m is from 1 to 20; and
wherein the unsubstituted cyclic anchoring functional group is selected from the group consisting of:,