Method of manufacturing magnetic powder
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United States of America Patent
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Aug 25, 2015
Grant Date -
May 2, 2013
app pub date -
Oct 26, 2012
filing date -
Oct 28, 2011
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Abstract
An aspect of the present invention relates to a method of manufacturing magnetic powder, which comprises adding an alkali metal salt compound comprising a substituent selected from the group consisting of an alkali metal salt of a carboxyl group and an alkali metal salt of a hydroxyl group to a water-based magnetic liquid comprising magnetic particles dispersed in an acidic water-based solvent to cause the magnetic particles to aggregate in the water-based magnetic liquid; and collecting the aggregated magnetic particles to obtain the magnetic powder.
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