Patent · US Active

Fluoropolyether compound, lubricant, and magnetic disk

US11866550B2 · kind B2 · utility

0Cited by

0References

4Claims

0Family size

Assignee

Moresco Corporation · JP

Inventors

Tomoko Honda · Yokohama, JP
Ryosuke SAGATA · Kobe, JP

Key dates

Filing date	Jul 13, 2022
Grant date	Jan 9, 2024
Priority date	—
Expiry date	Jul 13, 2042

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC10N2040/18
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Provided are a fluoropolyether compound having high heat resistance and capable of maintaining a surface protection layer even under high temperature, and a lubricant and a magnetic disk that contain the fluoropolyether compound. The fluoropolyether compound includes: three groups whose main chain contains a perfluoropolyether chain; and a trivalent linking group represented by Formula (1) below, the three groups being bound together via the trivalent linking group:where R1 is a saturated hydrocarbon group having 1 to 3 carbon atoms, a perfluoroalkyl group having 1 to 3 carbon atoms, an alkoxy group having 1 to 3 carbon atoms, a hydroxyl group, or an amino group, and A1, A2, and A3 are each independently an aromatic group.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.