Magnetic recording media

US5064721A · kind A · utility

Assignee

• BASF SE

Inventors

• August Lehner
• Albert Kohl · Laumersheim, DE
• Hermann Roller · Ludwigshafen, DE
• Werner Lenz · Bad Dürkheim, DE
• Ludwig Kreitner · Heppenheim, DE
• Helmut Kopke · Bad Dürkheim, DE
• Friedrich Sommermann · Kehl, DE
• Ernst Ricker · Kehl, DE

Key dates

• Filing date: Oct 31, 1988
• Grant date: Nov 12, 1991
• Expiry date: Oct 31, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31609
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

Magnetic recording media consist of a nonmagnetic base and at least one matnetizable layer which is firmly applied thereon and is based on a magnetic material finely dispersed in a binder, consisting of not less than 50% by weight of a polyurethane, and further conventional additives, wherein the magnetizable layer also contains a saturated, branched hydrocarbon.