Process for producing information recording medium

Details Process for producing information recording medium Process for producing information recording medium

1989-01-31

1991-04-16

Pianalto, Bernard

Coating processes

Magnetic base or coating

Magnetic coating

427131, H01F 1002

Patent

active

050081284

ABSTRACT:
A fluorine-containing isocyanate derivative, wherein the isocyano group of the fluorine-containing isocyanate is protected, a fluorine-containing polymer having at least one acylazido group, a process for producing an information recording medium by applying a lubricant comprising the fluorine-containing isocyanate derivative or the fluorine-containing polymer having at least one acylazido group to a magnetic layer formed on a substrate directly or through an underlayer, or to a protective layer formed on the magnetic layer, then reproducing or forming an isocyano group and subjecting the isocyano group to polymerization, thereby forming a fluorine-containing isocyanate polymer layer, an information recording medium produced according to the process and an apparatus for information recording, using the information recording medium are disclosed.
The lubricant is resistant to water and no polymerization proceeds before the formation of a lubricant layer, and a lubricant layer without defects is obtained with the lubricant and an information recording medium with good sliding characteristics is obtained.

REFERENCES:
patent: 3810874 (1974-05-01), Mitsch et al.

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