Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1979-04-05

1980-12-23

Pianalto, Bernard D.

Stock material or miscellaneous articles

Composite

Of epoxy ether

428480, 428506, 428521, 428522, 428900, 4284237, 4284259, 4284233, 4284231, H01F 1002

Patent

active

042411394

ABSTRACT:
A magnetic recording medium which has a protective layer on a magnetic recording layer coated on a substrate and said protective layer comprises polyurethane and nitrocellulose in which isopropyl alcohol originally present has been replaced by a resin selected from the group consisting of polyurethane resins, polybutadiene resins, butadiene-acrylonitrile copolymers, vinyl chloride-vinyl acetate-vinyl alcohol copolymers, vinyl chloride-vinyl acetate copolymers, vinyl chloride-vinylidene chloride copolymers, vinylidene chloride-acrylonitrile-copolymers, vinyl acetate resins, epoxy resins, phenoxy resins, polyvinylbutyral resins, polyvinyl formal resins and polyester resins.

REFERENCES:
patent: 3466156 (1969-09-01), Peters et al.
patent: 4075384 (1978-02-01), Suzuki et al.

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