MAGNETIC RECORDING MEDIUM

PURPOSE:To improve still durability and traveling durability by incorporating at least two kinds of fatty acids haveing >50 deg.C melting point and polyurethane into specified layers on a supporting body. CONSTITUTION:When fatty acid having >50 deg.C melting point is used and even when or more...

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Bibliographische Detailangaben
1. Verfasser:	SUNAGA TETSURO
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES FILLING PASTES FUELS INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER INKS LUBRICANTS LUBRICATING COMPOSITIONS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PEAT PETROLEUM, GAS OR COKE INDUSTRIES PHYSICS POLISHES TECHNICAL GASES CONTAINING CARBON MONOXIDE USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	PURPOSE:To improve still durability and traveling durability by incorporating at least two kinds of fatty acids haveing >50 deg.C melting point and polyurethane into specified layers on a supporting body. CONSTITUTION:When fatty acid having >50 deg.C melting point is used and even when or more kinds of such fatty acids are used, the amt. of elution significantly decreases. The fatty acids to be used are myristic acid, palmitic acid, behenic acid, etc., and two or more kinds of these acids with one fatty acid ester expressed by RCOOR' is used, wherein R and R' are aliphatic groups and R contains 16 or more carbon number. By incorporating at least one fatty acid ester and two or more kinds of fatty acids into specified layers such as magnetic layer, the effect of these fatty acids as a lubricant can be largely obtained. Thus, the medium has good still durability and traveling stability.