Coated magnetic recording media

US4018968A · kind A · utility

Assignee

• BASF SE

Inventors

• Ute Neumann
• Hermann Roller · Ludwigshafen, DE
• Job-Werner Hartmann · Ludwigshafen, DE
• Joachim Hack · Ludwigshafen, DE
• Herbert Motz · Beindersheim, DE
• Werner Ostertag · Havelsee, DE

Key dates

• Filing date: Sep 19, 1974
• Grant date: Apr 19, 1977
• Expiry date: Sep 19, 1994

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S428/90
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Coated magnetic recording media, especially video tapes and computer tapes, comprising a non-magnetic base carrying a magnetic coating which consists of a dispersion, essentially containing a finely divided magnetic pigment in an organic binder and at least one lubricant. A compound of the formula ##STR1## in which n is an integer of from 1 to 3 and R is alkyl, alkoxyalkyl or aralkyl, each of 3 to 18 carbon atoms, is used as a lubricant. The products have high abrasion resistance coupled with only little transfer of material to the magnetic heads even under fluctuating climatic conditions.