Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1987-11-05

1988-11-22

Robinson, Ellis P.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

252 6254, 427128, 427131, 428408, 428694, 428695, 428522, 4284259, 428900, G11B 571

Patent

active

047865512

ABSTRACT:
Disclosed is a magnetic recording medium having a magnetic layer composed mainly of a magnetic powder and a resin binder, wherein the magnetic layer comprises (a) an ester compound comprising (a-1) an ester compound represented by the following formula (1): ##STR1## wherein R stands for a branched alkyl group having 13 carbon atoms,
(a-2) butyl stearate and (a-3) butoxyethyl stearate, and (b) carbon black comprising (b-1) carbon black having an average single particle size of 10 to 50 m.mu. and (b-2) carbon black having an average single particle size of 200 to 1,000 m.mu..
This magnetic recording medium has an excellent durability and is utilized as a floppy disk or the like.

REFERENCES:
patent: 4652500 (1987-03-01), Ejiri
patent: 4666784 (1987-05-01), Imukai
patent: 4690864 (1987-09-01), Funahashi
patent: 4701372 (1987-10-01), Akiyama
patent: 4741959 (1988-05-01), Abe

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