Fluorine-containing ether compound, lubricant for magnetic recording medium and magnetic recording medium
US11292979B2 · kind B2 · utility
2Cited by
2References
24Claims
0Family size
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Key dates
| Filing date | Feb 20, 2017 |
| Grant date | Apr 5, 2022 |
| Priority date | — |
| Expiry date | Mar 16, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2050/023
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A fluorine-containing ether compound represented by a formula (1) shown below. R4—CH2—R3—CH2—R2—CH2—R1—CH2—R2—CH2—R3—CH2—R5 (1)In formula (1), R1 and R3 represent the same or different perfluoropolyether chains, R2 represents a linking group containing at least one polar group, one or both of R4 and R5 represent a terminal group containing two or more polar groups, and R4 and R5 are different.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.