MAGNETIC RECORDING MEDIUM

PURPOSE:To substantially improve the durability of a magnetic layer by incorporating at least one kind of the lubricating agents expressed by the formula Rf-CH2-(R)m-X into a magnetic layer. CONSTITUTION:The lubricating agent expressed by the formula (where, Rf is a fluoropolyoxyalkyl group of 8-152...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	NARAHARA TOSHIKAZU, SHOJI SABURO, HONJO HIROSHI, NAKANO FUMIO, HONMA KICHIJI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY FUELS 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 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
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Beschreibung
Zusammenfassung:	PURPOSE:To substantially improve the durability of a magnetic layer by incorporating at least one kind of the lubricating agents expressed by the formula Rf-CH2-(R)m-X into a magnetic layer. CONSTITUTION:The lubricating agent expressed by the formula (where, Rf is a fluoropolyoxyalkyl group of 8-152 C, R is an oxyalkylene group of 2-3 C, X is a polar group of any selected from -OH, -OCH2, -COOH, and -OCH2 COOH, m is - 1 integer) is incorporated into the magnetic layer. Since the such agent has the fluoropolyoxyalkyl group contg. carbon atoms at a high ratio and having particularly excellent lubricity, the agent has the excellent lubricating function. The lubricating effect is thus maintained substantially and continuously for a long period of time and the durability of the magnetic layer is substantially improved.