Fire-retardant mass and method of making same
AssigneeFlachglas Aktiengesellschaft
InventorGerhard Tunker
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Abstract
A process for making a fire-retardant composition in which monoaluminumphosphate is reacted with boric acid in a weight ratio 10:1 to 25:1, and to which preferably aluminum oxide in the form of aluminumhydroxide gel is added. The composition is applied between glass panes to form a fire-retardant barrier.
Claims10
A method of making a fire-retardant mass adapted to be received between glass panes, comprising the steps of:
- (a) reacting in the presence of water an amount from 90 to 95% by weight of monoaluminumhydrophosphate, from 4 to 8% by weight of boric acid, and from 1 to 2% by weight of aluminum hydroxide gel to produce a reaction product;
- and
- (b) adjusting the water content of said reaction product to yield a fire-retardant mass having a viscosity within a range from flowable liquid through viscous to extrudable.
A method of making a fire-retardant barrier comprising the steps of:
- (a) reacting in the presence of water an amount from 90 to 95% by weight of monoaluminumhydrophosphate, from 4 to 8% by weight of boric acid, and from 1 to 2% by weight of aluminum hydroxide gel to produce a reaction product;
- (b) adjusting the water content of said reaction product to yield a translucent fire-retardant mass having a viscosity within a range from flowable liquid through viscous to extrudable;
- and
- (c) disposing said fire-retardant mass between two glass panes to form said barrier.
A fire-retardant barrier, comprising a pair of spaced apart glass panes, and a translucent fire-retardant mass between said panes, said fire-retardant mass consisting essentially of a reaction product of the reaction of from 90 to 95% by weight of monoaluminum-hydrophosphate, from 4 to 8% by weight of boric acid, and from 1 to 2% by weight of aluminum hydroxide gel.
Dependencies are inferred from the claim text.