Foamable glass composition and glass foam
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United States of America Patent
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Aug 31, 1982
Grant Date -
N/A
app pub date -
Mar 11, 1981
filing date -
Mar 17, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Foamable glass composition suitable for making glass foam, which starts from water glass material and consisting essentially of 100 parts by weight of anhydrous modified sodium silicate and 0.5-4 parts by weight of CaCO.sub.3 as a foaming agent. A foam in the closed-cell form, which is light is in weight, and excellent water resistance, strength and heat resistance, is obtained, wherein CO.sub.2 in a gas existing in the cell is 50% by volume or more.
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