Rigid magnetic recording disk having perfluoropolyether lubricant

US4327139A · kind A · utility

Assignee

• BASF SE

Inventors

• Dieter Schaefer
• Herbert Motz · Beindersheim, DE
• Dieter Mayer · Ludwigshafen, DE
• Paul Deigner · Bad Dürkheim, DE
• Joachim Hack · Ludwigshafen, DE
• Roland Falk · Achern, DE

Key dates

• Filing date: Aug 15, 1979
• Grant date: Apr 27, 1982
• Expiry date: Aug 15, 1999

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31544
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A magnetic recording medium comprising a non-magnetic base and a magnetizable layer which is applied to at least one side thereof and comprises magnetic particles finely dispersed in a polymeric binder and additives, the surface of the magnetizable layer being provided with a coating of a perfluoropolyether oil mixture as a lubricant.