Process of producing magnetic recording medium

Details Process of producing magnetic recording medium Process of producing magnetic recording medium

1986-04-02

1988-03-01

Demers, Arthur P.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

252 6254, 427 57, 427128, 428900, C25D 1300, C25D 1306

Patent

active

047284056

ABSTRACT:
A process of producing a magnetic recording medium comprises continuously circulating a magnetic coating composition prepared by dispersing a ferromagnetic powder in a solution of a high molecular binder while applying an ultrasonic treatment to the circulating magnetic coating composition, drawing out an amount of the ultrasonically treated magnetic coating composition necessary for coating from the circulating stream, and then coating the magnetic coating composition which is drawn out on to a non-magnetic support.

REFERENCES:
patent: 4414271 (1983-11-01), Kitamoto
patent: 4585535 (1986-04-01), Sher et al.
patent: 4596739 (1986-06-01), Piltingsrud et al.
patent: 4604296 (1986-08-01), Aonuma et al.
patent: 4634632 (1987-01-01), Ogawa et al.
Kirk-Othmer Encyclopedia of Chemical Technology, 3rd ed., vol. 14, pp. 743-746.

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