Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1981-10-27

1984-06-12

Robinson, Ellis P.

Stock material or miscellaneous articles

Composite

Of polyamidoester

252 6254, 360134, 360135, 360136, 427128, 4284237, 428413, 428480, 428694, 428900, 428522, G11B 570

Patent

active

044542020

ABSTRACT:
A magnetic recording medium having a magnetic paint applied to a base is disclosed. The magnetic paint contains a three-component binder which comprises 30 to 70% of polyurethane having a terminal OH group, 10 to 50% of an epichlorohydrin/diphenylolpropane polycondensate and 10 to 50% of a vinyl chloride/vinyl acetate copolymer, vinyl chloride/vinyl acetate/maleic acid copolymer or vinyl chloride/vinyl acetate/vinyl alcohol copolymer, the percentage being based on the weight of the binder.

REFERENCES:
patent: 3320090 (1967-05-01), Graubart
patent: 3840400 (1974-10-01), Yamada et al.
patent: 3911196 (1975-10-01), Navidad
patent: 4259392 (1981-03-01), Suzuki
patent: 4307154 (1981-12-01), Hosaka et al.
patent: 4329398 (1982-05-01), Hosufu et al.
patent: 4340644 (1982-07-01), Otu et al.
patent: 4357391 (1982-11-01), Hosaka
patent: 4368238 (1983-01-01), Somezawa

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