Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1984-09-10

1986-02-18

Robinson, Ellis P.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

252 6254, 360134, 360135, 360136, 427128, 4284259, 428328, 428329, 428694, 428900, 428522, G11B 570

Patent

active

045713642

ABSTRACT:
A magnetic recording medium is described, comprising a non-magnetic support having provided thereon a magnetic layer comprising ferromagnetic particles dispersed in a binder, said ferromagnetic particles having a BET specific surface area of 25 m.sup.2 /g or more, said binder comprising a modified polyurethane resin containing 0.1 meq/g or more of functional groups selected from carboxyl groups, hydroxyl groups, sulfonic acid groups, and epoxy groups, and containing at least three functional groups per molecule of the resin.

REFERENCES:
patent: 3840400 (1974-10-01), Yamada
patent: 4152485 (1979-05-01), Mizumura
patent: 4286022 (1981-08-01), Vermillion
patent: 4328282 (1982-05-01), Lehner
patent: 4368238 (1983-01-01), Somezawa
patent: 4404253 (1983-09-01), Kohler
patent: 4407901 (1983-10-01), Miyatsuka
patent: 4411957 (1983-10-01), Tokuda
patent: 4521486 (1985-06-01), Ninomiya
patent: 4529661 (1985-07-01), Ninomiya

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