Process for producing magnetic recording material

Details Process for producing magnetic recording material Process for producing magnetic recording material

1982-12-07

1984-01-31

Newsome, John H.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427128, 427130, 427131, B05D 306

Patent

active

044289740

ABSTRACT:
A process for producing a magnetic recording material having excellent electromagnetic characteristics and sufficient abrasion resistance is disclosed. The process comprises the steps of coating on a support a magnetic recording composition containing a compound having an unsaturated bond polymerizable by irradiation with electron beams, an organic solvent capable of dissolving the compound and a ferromagnetic powder. The compound is subjected in sequence to a coating process on a nonmagnetic support, irradiated with an electron beam in an atmosphere containing oxygen at a concentration of 10,000 ppm or more and subjected to a smoothening treatment utilizing a specular surface, followed by an electron beam irradiation in an atmosphere containing oxygen at a concentration of 3,000 ppm or less.

REFERENCES:
patent: 3216846 (1965-11-01), Hendricx et al.
patent: 4343831 (1982-08-01), Tsuji et al.

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