Magnetic recording medium containing magnetic particles surface

Details Magnetic recording medium containing magnetic particles surface Magnetic recording medium containing magnetic particles surface

1989-04-18

1992-01-21

Cashion, Jr., Merrell C.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

428407, 428694, 428900, 427128, G11B 2300

Patent

active

050827332

ABSTRACT:
A method for preparing a magnetic recording medium is disclosed, comprising the steps of (1) surface-treating ferromagnetic particles with a glycidyl compound having a molecular weight of 1,000 or less and having an epoxy equivalent of 200 g/eq. or less, (2) dispersing the surface-treated ferromagnetic particles with a binder to prepare a magnetic coating composition, (3) coating the resulting magnetic coating composition on a nonmagnetic support, and then (4) drying the magnetic coating composition.

REFERENCES:
patent: 4407901 (1983-10-01), Miyatsuka et al.
patent: 4471009 (1984-09-01), Phillips
patent: 4594174 (1986-06-01), Nakayama et al.
patent: 4810572 (1989-03-01), Ooe et al.

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