Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1987-08-05

1989-12-05

Thibodeau, Paul J.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

428694, 428900, G11B 570

Patent

active

048852082

ABSTRACT:
A magnetic recording medium comprising a nonmagnetic support and a magnetic recording layer provided on the support, wherein the magnetic recording layer contains a compound having a polar group (i.e., a carboxylic acid group, a carboxylic acid salt group, a sulfonic acid group or a sulfonic acid salt group) which is bonded to an aromatic ring directly or indirectly through a polymethylene group having not more than 4 carbon atoms or an unsaturated straight-chain hydrocarbon group having not more than 4 carbon atoms.

REFERENCES:
patent: 4152485 (1989-05-01), Mizumura
patent: 4253886 (1981-03-01), Aonuma
patent: 4368237 (1983-01-01), Yamada
patent: 4404253 (1983-09-01), Kohler
patent: 4501610 (1985-02-01), Yazu
patent: 4585697 (1986-04-01), Kato
patent: 4678705 (1987-07-01), Huisman

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