Titanium dioxide pigments and manufacturing method
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United States of America Patent
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Sep 23, 2014
Grant Date -
Sep 13, 2012
app pub date -
Mar 9, 2011
filing date -
Mar 9, 2011
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Abstract
The invention provides a coated inorganic oxide pigment. The inventive coated inorganic oxide pigment comprises an inorganic oxide base pigment, a porous inorganic coating formed on the base pigment, and a dense inorganic coating formed on the base pigment. The porous inorganic coating and dense inorganic coating each consist essentially of a material selected from the group consisting of silica and alumina. In another aspect, the invention provides a method of manufacturing a coated inorganic oxide pigment. In yet another aspect, the invention provides a polymer composition comprising a base polymer, and a coated inorganic oxide pigment admixed with the base polymer.
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