Fluorine-containing ether compounds, lubricants for magnetic recording media, and magnetic recording media
A fluorine-containing ether compound with a 1,2-diol structure addresses the challenges of reduced magnetic spacing and spin-off in magnetic recording media by enhancing adhesion and intermolecular interactions, resulting in a lubricating layer with improved corrosion resistance and reliability.
JP2026083066APending Publication Date: 2026-05-19RESONAC CORP
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Patent Information
- Application Number
- JP2026026570
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-04-28
- Filing Date
- 2026-02-20
- Publication Date
- 2026-05-19
AI Technical Summary
Technical Problem
Magnetic recording media face challenges in achieving reduced magnetic spacing and preventing spin-off of the lubricating layer due to decreased thickness, which compromises corrosion resistance and adhesion to the protective layer.
Method used
A fluorine-containing ether compound with specific terminal groups, including a 1,2-diol structure, is used to form a lubricating layer that balances adhesion to the protective layer and intermolecular interactions, ensuring corrosion resistance and spin-off suppression.
Benefits of technology
The fluorine-containing ether compound forms a lubricating layer with excellent corrosion resistance and spin-off suppression, allowing for reduced thickness and improved magnetic recording medium reliability.
✦ Generated by Eureka AI based on patent content.
Abstract
By using the lubricant for a magnetic recording medium containing the fluorine-containing ether compound of the present invention, a lubricating layer with good corrosion resistance and capable of suppressing spin-off can be formed even if it is thin. 【Solution means】A fluorine-containing ether compound represented by formula (1). R 1 -CH2-R 2 -CH2-R 3 (1). R 2 is a perfluoropolyether chain. R 1 and R 3 are terminal groups having 1 to 4 polar groups and 1 to 50 carbon atoms. R 1 and R 3 At least one of them is a terminal group represented by formula (2). -O-X-CH(OH)-CH2OH (2). X is a divalent organic group having 2 to 30 carbon atoms which may contain at least one of 1 to 2 polar groups and 1 to 3 ether oxygen atoms. X contains at least one carbon atom not bonded to either the polar group or the ether oxygen atom.
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