Magnetic recording medium and binder for use with magnetic coating in the magnetic recording medium
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United States of America Patent
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Aug 10, 1999
Issued Date -
N/A
app pub date -
Oct 14, 1997
filing date -
Dec 9, 1994
priority date (Note) -
Expired
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Abstract
A magnetic recording medium has a substrate and a magnetic layer formed on the substrate. The magnetic layer includes magnetic powder and a binder for binding the magnetic powder on the substrate. The binder includes at least a resin component containing at least an aminoquinone structure selected from an aminoquinone structure group shown with formulas (1-1a), (1-1b), (1-3a) and (1-3b) as a constitutional unit and at least a polar group selected from a group shown with a formula (1-2) in a composition of the resin component. Thus, the magnetic recording medium has excellent corrosion resistance of the magnetic powder and excellent conservation and running durability.
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