Quaternary ammonium salt of an alkoxysilane as a dispersant for magnetic pigment
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United States of America Patent
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Oct 9, 1990
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N/A
app pub date -
Feb 23, 1990
filing date -
Mar 23, 1988
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Expired
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Abstract
There is disclosed the use of a quaternary ammonium salt of an alkoxysilane as a dispersant for magnetic pigment particles in the preparation of magnetic recording media. The dispersant of the present invention can bind to the pigment particles and may be substituted for conventional phosphate ester dispersants which are incapable of binding to the pigment and tend to migrate to the surface of such media, thereby adversely affecting recording media performance.
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