Coated magnetic recording media

Details Coated magnetic recording media Coated magnetic recording media

1974-09-19

1977-04-19

Pianalto, Bernard D.

Stock material or miscellaneous articles

Metal continuous phase interengaged with nonmetal continuous...

252 6254, 428900, H01F 1002

Patent

active

040189686

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.

REFERENCES:
patent: 3692884 (1972-09-01), Gaskell
patent: 3704152 (1972-11-01), Hartmann
patent: 3719525 (1973-03-01), Patel et al.
patent: 3778308 (1973-12-01), Roller et al.
patent: 3793074 (1974-02-01), Frankenthal et al.

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