Graft polymerized metal oxide compositions and methods
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United States of America Patent
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Jul 7, 1998
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N/A
app pub date -
Aug 4, 1997
filing date -
Aug 4, 1997
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Abstract
The present invention provides modified particulate metal oxides having desired properties and methods of producing the metal oxides. The methods basically comprise the steps of reacting a particulate metal oxide in an aqueous solution or emulsion containing ceric ion to produce hydroxyl free radicals on the surfaces of the metal oxide and then reacting the metal oxide with a polymerizable vinyl monomer to graft the monomer to the metal oxide and polymerize the monomer. The graft polymerized metal oxide compositions produced have improved properties such as compatibility and ease of mixing with water based, oil based and plastics formulations.
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