Amorphous alkali metal silicate process and uses
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United States of America Patent
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Dec 2, 1997
Grant Date -
N/A
app pub date -
Jun 1, 1995
filing date -
Aug 23, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A particulate amorphous alkali metal silicate is prepared by heating a mixture of silicate glass and water or aqueous solution to a temperature of about 300.degree.-400.degree. C. to provide a foamed material that is easily formed into particles of less than 20 microns. After careful hydration, a product having 1-15% water based on loss of ignition (LOI) of product at 800.degree. C. is produced that controls the activity of magnesium in solutions and is, therefore, a useful detergent ingredient.
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