Magnetic recording medium
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United States of America Patent
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Jul 2, 1985
Grant Date -
N/A
app pub date -
Apr 23, 1982
filing date -
Aug 28, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention provides a magnetic recording medium with excellent electromagnetic characteristics and running durability. According to the invention, a magnetic powder is kneaded with a cross-linkable or polymerizable resin binder, together with a phosphoric ester having a polymerizable, unsaturated double bond or bonds, the resulting coating material is applied to a substrate, and then the coating is cross-linked or polymerized. The addition of the phosphoric ester in place of an ordinary dispersing agent improves the mechanical properties of the magnetic coating and the durability and running quality of the magnetic recording medium.
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