Transparent fire-screening panels

Details Transparent fire-screening panels Transparent fire-screening panels

1987-11-27

1989-10-10

Locker, Howard J.

Stock material or miscellaneous articles

Composite

Of quartz or glass

428913, 428920, 428921, 252601, 252606, 106 1812, 106 74, 156 99, 156100, 156106, B32B 900, B32B 1706, B27N 900, C09K 2100

Patent

active

048731463

ABSTRACT:
A transparent fire-screening glazing panel has at least one solid intumescent layer comprising a hydrated alkali metal silicate and at least one sheet of glazing material, and the layer of intumescent material contains at least one silicate-stabilizing agent. Suitable stabilizing compounds include at least partially dissociated nitrogenized organic compounds, especially quaternary ammonium compounds such as tetramethylammonium hydroxide. To manufacture such a panel, the silicate-stabilizing agent may be incorporated into an aqueous solution of the intumescent material which is then hardened by drying to form the layer. Alternatively, the silicate-stabilizing agent may be incorporated into an aqueous solution of the intumescent material which is then dried to form grains which are subsequently incorporated into a layer held sandwiched between two sheets of glazing material.

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patent: 4319926 (1982-03-01), Nowakowski et al.
patent: 4433016 (1984-02-01), Neely, Jr. et al.

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