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

• Main Authors: MUROFUSHI KATSUMI, YAGYU DAISUKE, NANKO MASAKI, YAMAGUCHI YUTA, FUKUMOTO NAOYA, TOMITA HIROYUKI, KATO TSUYOSHI, KURITANI MASUMI
• Format: Patent
• Language: Chinese; English
• Published: 29.05.2020
• Subjects: CHEMISTRY; FUELS; HETEROCYCLIC COMPOUNDS; INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS; INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; LUBRICANTS; LUBRICATING COMPOSITIONS; METALLURGY; ORGANIC CHEMISTRY; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICS; TECHNICAL GASES CONTAINING CARBON MONOXIDE; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION

Provided is a fluorine-containing ether compound which is capable of forming a lubricating layer that has excellent wear resistance even if the thickness thereof is thin, and which is suitable as a material for a lubricant for magnetic recording media. A fluorine-containing ether compound is represented by a formula (1): R1-R2-CH2-R3-CH2-R4-R5 (In formula (1), R3 represents a perfluoropolyether chain; R1 is an end group bonded to R2; R5 is an end group bonded to R4; R1 represents an alkenyl group or an alkynyl group; R5 represents a group that contains a heterocyclic ring; R2 is a moiety represented by formula (2); R4 is a moiety represented by formula (3); and a in formula (2) and b in formula (3) independently represent an integer of 1-3.) 本发明提供可以形成即使厚度薄也具有优异的耐磨损性的润滑层，适合作为磁记录介质用润滑剂的材料的含氟醚化合物。式(1)所示的含氟醚化合物。R-R-CH-R-CH-R-R(1)(在式(1)中，R为全氟聚醚链。R为与R结合的末端基，R为与R结合的末端基。R为烯基或炔基，R为包含杂环的基团。R由下述式(2)表示，R由下述式(3)表示。式(2)中的a和式(3)中的b各自独立地为整数1～3。)