Product containing silicon dioxide and a method for its preparation
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United States of America Patent
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May 23, 1995
Grant Date -
N/A
app pub date -
Jun 28, 1994
filing date -
Dec 31, 1991
priority date (Note) -
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Abstract
A product contains silicon dioxide in the form of polysilicic acid in a supporting structure of cellulose. The polysilicic acid contains aluminum silicate sites. In the preparation of the product the cellulose and the silicon dioxide in the form of polysilicic acid are blended to obtain the product in solid form. The obtained blended product is modified with a compound containing aluminum, such as a solution aluminate, which causes the formation of aluminum silicate sites on the polysilicic acid. The cellulose used is viscose cellulose.
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