LUBRIFICATION DE MATERIAUX MAGNETIQUES ENREGISTREURS PAR DES POLYMERES FLUORES TELECHELIQUES

L'INVENTION CONCERNE L'INDUSTRIE DES MATERIAUX ENREGISTREURS MAGNETIQUES.CES MATERIAUX COMPORTENT DES REVETEMENTS LUBRIFIANTS, RESISTANT AUX CONDITIONS ELEVEES DE TEMPERATURE ET D'HUMIDITE RELATIVE AINSI QU'AU NETTOYAGE, COMPRENANT UN POLYETHER FLUORE TELECHELIQUE, CONTENANT AU M...

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Bibliographische Detailangaben
1. Verfasser:	DOUGLAS G. PEDROTTY ET JOHN G. CHERNEGA
Format:	Patent
Sprache:	fre
Schlagworte:	INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS
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Zusammenfassung:	L'INVENTION CONCERNE L'INDUSTRIE DES MATERIAUX ENREGISTREURS MAGNETIQUES.CES MATERIAUX COMPORTENT DES REVETEMENTS LUBRIFIANTS, RESISTANT AUX CONDITIONS ELEVEES DE TEMPERATURE ET D'HUMIDITE RELATIVE AINSI QU'AU NETTOYAGE, COMPRENANT UN POLYETHER FLUORE TELECHELIQUE, CONTENANT AU MOINS UN GROUPE POLAIRE TERMINAL QUE: -CONHCHCHOH, -COOCH, -CONNCHCH, ET -COCF.APPLICATION A LA LUBRIFICATION DES VIDEO-BANDES ET DISQUES. The invention concerns lubricating coatings for magnetic recording media. Prior lubricating coatings for flexible recording media have not been reliable at high temperatures and high relative humidity. Prior lubricating coatings for rigid recording disks have not been resistant to removal when cleaned. These problems are solved by a lubricant which is a fluorinated telechelic polyether polymer having at least one polar group such as -CHNHCH2CH2OH, -COOCH3, -CONNCH2C6H5, and -COCF3. The telechelic polymer preferably has a Ferranti-Shirley viscosity of 20-2000 centipose and a number average molecular weight of at least 1000.