Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1984-10-04

1986-07-22

Robinson, Ellis P.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

252 6254, 360134, 360135, 360136, 427 44, 427128, 428480, 428522, 428694, 428900, G11B 570

Patent

active

046019472

ABSTRACT:
A magnetic recording medium, produced by preparing a resin solution for magnetic paint having as a main component thereof a copolymer of (A) vinyl chloride, (B) a vinyl carboxylate, (C) an unsaturated carboxylic acid, (D) an unsaturated carboxylic anhydride and (E) vinyl alcohol, containing 50 to 90% by weight of (A) based on the total of the amounts of (A), (B) and (E), 1 to 15% by weight of (E) based on the total of the amounts of (A), (B) and (E), 0 to 30% by weight of (D) based on the total of amounts of (C) and (D), and 1 to 5 parts by weight of the total of (C) and (D) based on 100 parts by weight of the total of (A), (B) and (E) and having an average polymerization degree of 100 to 400, mixing 10 to 80% by weight of said resin solution with 90 to 20% by weight of a radiation curable resin, blending the resultant mixture as a main component with a magnetic powder, applying the resultant magnetic paint to a non-magnetic substrate, and curing the applied layer of paint with radiation.

REFERENCES:
patent: 4004997 (1977-01-01), Tsukamoto
patent: 4368239 (1983-01-01), Nakajima
patent: 4407853 (1983-10-01), Okita
patent: 4428974 (1984-01-01), Okita
patent: 4434210 (1984-02-01), Nakajima
patent: 4448846 (1984-03-01), Chang
patent: 4448848 (1984-05-01), Okita
patent: 4476035 (1984-10-01), Miyoshi
patent: 4559265 (1985-12-01), Kubota
patent: 4560617 (1985-12-01), Nishimatsu

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