Amorphous silicas
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United States of America Patent
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Oct 12, 1999
Issued Date -
N/A
app pub date -
Dec 23, 1997
filing date -
Jun 30, 1995
priority date (Note) -
Expired
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Abstract
An amorphous silica having an RDA value of between 30 and 70, an oil absorption capacity of between 100 and 155 cc/100 g and a moisture loss of less than 7% w/w, can be incorporated at a 10% to 25% loading into a transparent toothpaste having a refractive index of above 1.445, this toothpaste having an RDA value of between 30 and 60.
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