Magnetic recording material

Details Magnetic recording material Magnetic recording material

1984-03-23

1986-03-18

Robinson, Ellis P.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

252 6254, 360134, 360135, 360136, 427 44, 4284259, 428522, 428694, 428900, G11B 570

Patent

active

045768668

ABSTRACT:
There is provided a magnetic recording material which comprises a support and a magnetic layer coated thereon. The magnetic layer contains as its binder, a combination of at least one vinyl chloride-vinyl acetate-based copolymer characterized by its --CO.sub.2 H content or cellulose dinitrate, at least one urethane acrylate having a particular chemical structure, and at least one low molecular weight compound having two or more acryloyl or methacryloyl groups. The magnetic layer is hardened by beam irradiation. Thus, marked increase in dispersibility of ferromagnetic powders, improvement in electromagnetic transformation characteristics and sharp increase in durability are attained.

REFERENCES:
patent: 4004997 (1977-01-01), Tsukamoto
patent: 4407853 (1983-10-01), Okita
patent: 4428974 (1984-01-01), Okita
patent: 4448846 (1984-05-01), Chang
patent: 4448848 (1984-05-01), Okita

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