Process for the preparation of crystalline sodium silicates
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United States of America Patent
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Aug 8, 2000
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N/A
app pub date -
Feb 23, 1998
filing date -
Feb 25, 1997
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Expired
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Abstract
The invention relates to a process for the preparation of crystalline sodium silicates having a sheet structure and high .delta. phase content from water glass, which has been prepared hydrothermally, by dehydration of the water glass and subsequent crystallization at elevated temperature, which comprises treating the water glass at temperatures of from 50 to 140.degree. C. prior to dehydration.
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