Method for the production of coarse-scale and/or nanoscale, coated, de-agglomerated magnesium hydroxide particles
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United States of America Patent
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Issued Date -
Jan 21, 2010
app pub date -
Jul 2, 2009
filing date -
Jul 4, 2008
priority date (Note) -
Abandoned
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Abstract
The present invention relates to a method for the production of coated magnesium hydroxide particles, whereby the individual primary magnesium hydroxide particles are coated. According to the invention, specific additives are added to the precipitation reaction for obtaining the magnesium hydroxide particles, in order to obtain these magnesium hydroxide particles in a coated state. Furthermore, a first method step of the present invention is directed at a method for the production of coarse-scale or nanoscale, coated magnesium hydroxide suspensions or dispersions. In a second method step, the coated magnesium hydroxide particles can be converted to de-agglomerated products either by means of bead-mill grinding or ultrasound and a dispersant. Finally, the present invention is directed at coated magnesium hydroxide particles, particularly nanoscale, coated magnesium hydroxide particles that can be obtained in this manner.
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