Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1979-11-19

1982-05-11

Silverman, Stanley S.

Stock material or miscellaneous articles

Composite

Of epoxy ether

252 6254, 360134, 427128, 4284259, 428483, 428522, 428694, 428900, G11B 568

Patent

active

043293980

ABSTRACT:
A magnetic recording medium consisting of a base coated with a magnetic coating material, characterized in that the binder composition in said magnetic coating material is ternary, consisting of from 30 to 70% of a polyurethane resin having an --OH group in the terminal position, from 10 to 50% of an epoxy resin, and from 10 to 50% of a vinyl chloride-vinylidene chloride copolymer, all by weight on the basis of the total weight of the binder together with a curing agent. The magnetic recording medium exhibits superior electromagnetic properties and physical properties such as stability on repeated runs and bonding strength of the coating.

REFERENCES:
patent: 3247017 (1966-04-01), Eichler et al.
patent: 3320090 (1967-05-01), Graubart
patent: 3650828 (1972-03-01), Higaohi et al.
patent: 3689317 (1972-09-01), Akashi et al.
patent: 3740266 (1973-06-01), Akashi et al.
patent: 3840400 (1974-10-01), Yamada et al.
patent: 3911196 (1975-10-01), Navidad

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