RIGID MAGNETIC RECORDING MEDIA

® A rigid magnetic storage media coating composition using a high concentration of magnetic particles includes a dual thermoset binder system. The two polymers forming the dual binder system cure during mutually exclusive temperature ranges to form polymer networks that are interpenetrated and entan...

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Bibliographische Detailangaben
Hauptverfasser: PILTINGSRUD, DOUGLAS HOWARD, SHEN, JOHN CHEN SHYAN
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:® A rigid magnetic storage media coating composition using a high concentration of magnetic particles includes a dual thermoset binder system. The two polymers forming the dual binder system cure during mutually exclusive temperature ranges to form polymer networks that are interpenetrated and entangled. The thermoset polyurethane-melamine/ polyester polymer binder system possesses improved properties including the ability to retain liquid fluorinated polyether lubricant without spin-off. The addition of a small amount of silicone wax to the uncured coating composition enhances composition rheology during spin coating on a rigid substrate.