Method of preparing ceramic powders using chelate precursors
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United States of America Patent
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Mar 29, 2011
Grant Date -
Jun 28, 2007
app pub date -
Mar 7, 2006
filing date -
Apr 12, 2001
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Abstract
Wet-chemical methods involving the use of water-soluble hydrolytically stable metal-ion chelate precursors and the use of a nonmetal-ion-containing strong base can be used in a coprecipitation procedure for the preparation of ceramic powders. Examples of the precipitants used include tetraalkylammonium hydroxides. A composition-modified barium titanate is one of the ceramic powders that can be produced. Certain metal-ion chelates can be prepared from 2-hydroxypropanoic acid and ammonium hydroxide.
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