Precipitated silicas
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Mar 24, 1992
Issued Date -
N/A
app pub date -
Jan 24, 1991
filing date -
Dec 3, 1985
priority date (Note) -
Expired
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Abstract
A precipitated silica, suitable for use in toothpastes, has a high absorbency, i.e. 110 to 180 cm.sup.3 100 g, and good abrasivity with a plastics abrasion value of 12 to 20. The silica provides abrasion even at a relatively low particle size.
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