MAGNETISCHE AUFZEICHNUNGSMEDIEN, UMFASSEND WENIGSTENS IN EINER MAGNETISCHEN AUFZEICHNUNGSSCHICHT EIN MODIFIZIERTES VINYLCHLORID-KUNSTHARZBINDEMITTEL

摘要

Magnetic recording mediums comprise a non-magnetic support and a magnetic recording layer formed on one side of the support. The magnetic recording layer comprises a magnetic powder dispersed in a specific type of vinyl chloride resin having a -SO3M or group, in which M represents a monovalent metal or NH4, and an epoxy group in the molecule. A back coat layer comprising the specific type of vinyl chloride resin may also be formed on the other side of the support.