Foamed glass article for preparing surfaces, use therefor, and method of making same
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United States of America Patent
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Oct 13, 1998
Grant Date -
N/A
app pub date -
Dec 10, 1996
filing date -
Mar 29, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A foamed glass article for preparing surfaces, the use therefor, and a method of making same are provided. The foamed glass article is in the form of a block, disk or similar product, and is used for preparing surfaces such as by sanding, rubbing and scraping the same to clean, abrade, polish, smooth, or the like such a surface. The foamed glass article is formed from a starting mixture that comprised waste glass, 0.10-20% by weight of a non-sulfur based foaming agent, and optionally an additional abrasive material. A mixture of powdered waste glass and non-sulfur based foaming agent can be placed in a mold and heated so that the mixture sinters and subsequently foams. Thereafter, the foamed mixture is annealed.
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