Microwave Process for Preparing Stable Metal Oxide Dispersions
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United States of America Patent
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Issued Date -
Jul 11, 2013
app pub date -
Nov 20, 2012
filing date -
Jan 6, 2012
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Abstract
Microwave irradiation is used to prepare stable dispersions of small particle metal oxides, such as magnesium oxide and calcium oxide, from a composition prepared from a mixture comprising an oxide, hydroxide or carbonate of the metal, a carrier, a sulfonic or carboxylic acid dispersant, and typically a low MW carboxylic acid and water. Dispersions with an average particle size of one micron or less, often from 1-100 nm, are typically obtained.
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