Encapsulated Activated Carbon and the Preparation Thereof
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United States of America Patent
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Issued Date -
Jun 18, 2009
app pub date -
Dec 14, 2007
filing date -
Dec 14, 2007
priority date (Note) -
Abandoned
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Abstract
The present invention relates to encapsulated activated carbon and a method of preparing the same to protect the structure of the activated carbon and preserve the odor absorbing capability of the activated carbon particles. Particularly, the present invention is directed to a method of forming a polymer substrate upon melt processing comprising providing a first master batch of activated carbon particles that are at least partially encapsulated with a non-water soluble amorphous polymer, providing a matrix polymer, mixing the first master batch with the matrix polymer to form a mixture, and extruding the mixture to form a polymer substrate.
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