Magnetic recording medium and preparation thereof

Details Magnetic recording medium and preparation thereof Magnetic recording medium and preparation thereof

1980-11-19

1982-06-22

Pianalto, Bernard D.

Stock material or miscellaneous articles

Composite

Of silicon containing

427127, 427128, 428404, 428405, 428448, 428695, 428900, B32B 904, H01F 1002

Patent

active

043363105

ABSTRACT:
A magnetic recording medium comprises a substrate coated with a magnetic layer comprising a binder resin and a metallic magnetic powder supporting silica on the surface which is coated with sequential layers of hydrolyzed silane compound and oleic acid. A magnetic recording medium is produced by sequentially treating a metallic magnetic powder supporting silica on the surface with a solution of a hydrolyzable silane compound and a solution of oleic acid to obtain a magnetic powder having the coated sequential layers and admixing the coated magnetic powder with a binder resin to prepare a magnetic composition and coating the magnetic composition on a substrate to form a magnetic layer.

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