Magnetic recording media

Details Magnetic recording media Magnetic recording media

1975-10-22

1978-05-23

Pianalto, Bernard D.

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428539, 428900, H01F 1002

Patent

active

040911438

ABSTRACT:
Magnetic recording media, the magnetic coating of which consists of a dispersion of elongated ferromagnetic chromium dioxide particles in an organic binder, the dispersions exhibiting particularly good storage stability. This is achieved by admixing 0.5 to 6% by weight, based on the amount of chromium dioxide pigment, of the zinc salt of an aliphatic carboxylic acid of 8 to 18 carbon atoms, during the manufacture of the chromium dioxide dispersions. Chromium dioxide dispersions with good storage stability and a high degree of orientation of the elongated magnetic particles in the magnetic coating are thus obtained in a simple manner.

REFERENCES:
patent: 3398011 (1968-08-01), Neirotti et al.
patent: 3484268 (1969-12-01), Newman
patent: 3526598 (1970-09-01), Lemke
patent: 3625760 (1971-12-01), Slovinsky
patent: 3634252 (1972-01-01), Graham
patent: 3649541 (1972-03-01), Ingersoll
patent: 3819411 (1974-06-01), Kitamoto et al.

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