Magnetic tape and process of making a magnetic tape

Details Magnetic tape and process of making a magnetic tape Magnetic tape and process of making a magnetic tape

1975-05-23

1976-08-24

Pianalto, Bernard D.

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

427 48, 427128, 427130, 427131, 428539, 428900, H01F 1002

Patent

active

039768228

ABSTRACT:
Magnetic tapes are made by applying to a backing film an aqueous dispersion of magnetic particles having dissolved therein cyclic sulfonium zwitterion monomers, magnetically orienting the magnetic particles, drying the coating and curing same. Upon removal of the water and/or moderate heating, the monomers polymerize to form a durable matrix having the magnetic particles dispersed therein.

REFERENCES:
patent: 3437510 (0000-01-01), Diaz
patent: 3505109 (0000-01-01), Schnell et al.
patent: 3636052 (0000-01-01), Hatch et al.
patent: 3660431 (0000-01-01), Hatch et al.
patent: 3749737 (0000-01-01), Hatch et al.
patent: 3804797 (0000-01-01), Broxterman et al.
patent: 3813363 (0000-01-01), Schmidt et al.

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