Compositions of particulate materials
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United States of America Patent
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Oct 11, 2022
Grant Date -
Aug 6, 2020
app pub date -
Mar 22, 2017
filing date -
Mar 22, 2016
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Abstract
The invention provides a composition of particulate materials. The composition comprises lanthanum chloride in particulate form. The composition also comprises up to about 4% by weight of amorphous silica in particulate form, based on the combined weight of the lanthanum chloride and the amorphous silica. The addition of amorphous silica to desiccated lanthanum chloride forms a fine coating or barrier on the outer surfaces of the individual lanthanum crystals, providing a composition that is significantly more stable and able to resist coalescence of particles than pure desiccated lanthanum chloride.
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