Foamed glass article for preparing surfaces, use therefor, and m

Details Foamed glass article for preparing surfaces, use therefor, and m Foamed glass article for preparing surfaces, use therefor, and m

1998-08-03

1999-10-26

Marcheschi, Michael

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 32, 501 84, 501155, 65 22, 51296, 51307, 51309, 510109, 510180, 510238, 510293, 510240, 510241, 510243, 510244, 510245, C03C 1100, C04B 3802, C04B 3810, C03B 1908

Patent

active

059728175

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 glass, 0.10-20% by weight of at least one non-carbon/sulfate based foaming agent, and optionally an additional abrasive material. A mixture of powdered glass and non-carbon/sulfate 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.

REFERENCES:
patent: 3963503 (1976-06-01), Mackenzie
patent: 4933306 (1990-06-01), Pietsch
patent: 4981820 (1991-01-01), Renlund et al.
patent: 5326382 (1994-07-01), Oat
patent: 5821184 (1998-10-01), Haines et al.

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