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US 6,642,164 B2Granted
Lightweight heat-insulating building material having frost resistance
AssigneeNippon Sheet Glass Co., Ltd.
InventorNoriyasu Akaishi
Life of this patent
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Abstract
A lightweight heat-insulating building material which has excellent frost resistance and a low price is provided. The lightweight heat-insulating building material having frost resistance is produced by molding a mixture of raw materials containing glass powder, a foaming agent, a crystallization inhibitor, and a frost inhibitor so as to form a molded body, and firing the molded body so as to foam the molded body.
Claims9
A lightweight heat-insulating building material having frost resistance comprising:
- a mixture of raw materials containing glass powder, 0.3-10 wt % carbonate or 0.1 to 5 wt % aluminum metal as a foaming agent, 1-10 wt %, expressed as sodium silicate, of a crystallization inhibitor of at least one material selected from the group consisting of boric acid, borax and Na2SO4.10H2O, and 0.5-30 wt % of a frost inhibitor containing calcium silicate, said mixture being molded and fired to form a molded body.
Dependencies are inferred from the claim text.