Patent · US Active

Fluorine-containing ether compound, lubricant for magnetic recording medium and magnetic recording medium

US11332686B2 · kind B2 · utility

3Cited by

1References

15Claims

0Family size

Assignee

Showa Denko K.K. · JP

Inventors

Naoya FUKUMOTO · Ichihara, JP
Yuta YAMAGUCHI · Tokyo, JP
Naoko Ito · Tokyo, JP
Katsumi Murofushi · Tokyo, JP

Key dates

Filing date	Nov 24, 2017
Grant date	May 17, 2022
Priority date	—
Expiry date	Nov 29, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC10N2050/023
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A fluorine-containing ether compound represented by formula (1) shown below. R4—CH2—R3—CH2—R2—CH2—R1—CH2—R2—CH2—R3—CH2—R4 (1) (In formula (1), R1 and R3 represent different perfluoropolyether chains, R2 represents a linking group containing one or more polar groups, and R4 represents a terminal group containing two or more polar groups.)

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