Process for producing magnetic recording medium, magnetic paint,

Details Process for producing magnetic recording medium, magnetic paint, Process for producing magnetic recording medium, magnetic paint,

1989-12-22

1990-10-30

Pianalto, Bernard

Coating processes

Electrical product produced

Fluorescent or phosphorescent base coating

252 6254, 427128, 427130, 427131, 427380, 4283084, 4283157, 4283159, 4283166, 4283211, 428339, 428695, 428900, H01F 1002

Patent

active

049667971

ABSTRACT:
A magnetic recording medium is prepared by applying a magnetic paint containing at least magnetic particles and a thermally curable binder to a substrate, thermally curing the applied magnetic paint, thereby forming a magnetic film, and impregnating micropores formed in the magnetic film with a lubricant, where the magnetic paint further contains a poly(alkyleneoxide)-grafted binder, and the grafted poly(alkyleneoxide) moiety is thermally decomposed during the thermal curing, thereby forming the micropores in the magnetic film. A large number of micropores having a pore size of not more than 0.1 .mu.m are formed in the magnetic film, and a magnetic disk of high durability with less noises and errors during the recording and reproduction can be obtained.

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