Treatment of talc in a solvent
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United States of America Patent
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Dec 23, 2014
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app pub date -
May 27, 2008
filing date -
Jun 8, 2007
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Abstract
The present invention is directed to a process for the treatment of talc, comprising the steps of (a) providing a talc having a first brightness value B1, measured according to ISO 2469, and forming a suspension of the talc in a liquid phase, the liquid phase of the suspension comprising at least one organic solvent, (b) delaminating and/or reducing the weight median particle size d50 of the talc, wherein the treated talc has a brightness value B2, measured according to ISO 2469, and B2≧B1.
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