Magnetic recording media

US4559118A · kind A · utility

Assignee

• BASF SE

Inventors

• Guenter Heil
• Herbert Spoor · Schifferstadt, DE
• Werner Lenz · Bad Dürkheim, DE
• Jenoe Kovacs · Heßheim, DE
• Werner Grau · Frankenthal (Pfalz), DE
• Werner Balz · Schifferstadt, DE
• August Lehner

Key dates

• Filing date: Sep 10, 1984
• Grant date: Dec 17, 1985
• Expiry date: Sep 10, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31786
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

Magnetic recording media comprise a non-magnetic base and one or more magnetic layers consisting of an organic binder matrix containing finely divided magnetic material, the said matrix being obtained by electron beam curing of a mixture of from 50 to 100% by weight of a polyurethane acrylate polymer possessing polymerizable double bonds and from 0 to 50% by weight of an acrylate and/or an acrylate prepolymer and/or an N-vinyl monomer and/or an N-vinyl prepolymer.