Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1997-10-10
1999-12-07
Resan, Stevan A.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
428694BA, 428900, G11B 5712
Patent
active
059980095
ABSTRACT:
The present invention provides a magnetic recording medium having a magnetic layer comprising a ferromagnetic powder dispersed in a binder so as to exhibit an excellent electromagnetic property.
The magnetic recording medium has a magnetic layer formed on a non-magnetic body, from a magnetic paint mainly consisting of a ferromagnetic powder and a binding agent. This magnetic layer also contains a metal chelate compound of a diketone shown in Chemical Formula given below: ##STR1## wherein R.sup.1 to R.sup.3 are selected from a group consisting of hydrogen, halogen, hydroxyl group, nitro group, carboxyl group, carbonyl group, amino group, amide group, and sulfonic acid group as well as alkyl group, aryl group, hetero-aromatic group replaced therewith and wherein the metal of the chelate compound is Ti, Zr, Ni, Sn, Co, or Cr.
REFERENCES:
patent: 4092256 (1978-05-01), Goodson et al.
patent: 4885208 (1989-12-01), Araki et al.
patent: 5587232 (1996-12-01), Hayashi et al.
Ata Masafumi
Kamei Takahiro
Kishii Noriyuki
Kurihara Ken-ichi
Miyashita Mayumi
Resan Stevan A.
Sony Corporation
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