FORMATION OF LUBRICATING FILM AND PRODUCTION OF MAGNETIC RECORDING MEDIUM

PURPOSE:To obtain the lubricating film for which a solvent having no problems in environmental destruction by applying an emulsion consisting of a fluropolymer compd., surfactant and dispersion medium on a base plate and drying the coating. CONSTITUTION:The fluoropolymer compd. perfluoro polyether(P...

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Bibliographische Detailangaben
Hauptverfasser:	NAGASHIRO KAZUICHI, KATO ATSUSHI, AKAGI MOTOO
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL 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 PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PHYSICS POLISHES PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SPRAYING OR ATOMISING IN GENERAL TECHNICAL GASES CONTAINING CARBON MONOXIDE TRANSPORTING 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 obtain the lubricating film for which a solvent having no problems in environmental destruction by applying an emulsion consisting of a fluropolymer compd., surfactant and dispersion medium on a base plate and drying the coating. CONSTITUTION:The fluoropolymer compd. perfluoro polyether(PFPE), the surfactant (more particularly a nonionic fluorocarbon polymer) and the dispersion medium (preferably water) is applied on the base plate and is dried. The PFPE and the waver are held separated to the two layers if both are merely mixed but if the surfactant is interposed thereon, the hydrophilic group thereof bonds to the water and the hydrophobic group bonds to the high polymer, thereby uniformly dispersing both and forming the emulsion. The above-mentioned emulsion forms the lubricating film consisting of 1 to 10 pts.wt. PFPE, 1 to 10 pts.wt. surfactant and 10 to 1000 pts.wt. dispersion medium. The method for forming the lubricating film is applied to magnetic recording media. The possibility of the environmental destruction is eliminated and a considerable cost reduction is attained.