FIRE-RESISTANT MULTILAYER MATERIAL Russian patent published in 2014 - IPC D06N3/04 B32B27/04 

FIELD: chemistry.

SUBSTANCE: polyester fabric with thickness of 0.13-0.3 mm and surface density of 80-300 g/m² is first saturated with silicone emulsion to post-drying weight increase of 3.0-8.5 wt %, and then with aqueous solution of a mixture of polyphosphoric acids and urea with ratio of nitrogen to phosphorus of 1.0:1.56-1.80 to post-drying weight increase of 12.0-21.5 wt %. The modified fabric is coated with a double-sided coating based on a polyvinyl chloride (PVC) composition which contains antipyrenes with the ratio of layers of the saturated fabric to the double-sided PVC coating of 1.0:1.14-2.28, with ratio of layers of the finished material by weight - saturated fabric: front coating: back coating of 1.0:0.595-1.7:0,27-0.886, respectively, and with ratio of layers by thickness of 1.0:0.39-2.1:0.3-1.17, respectively.

EFFECT: producing fire-resistant materials, having a given set of physical and mechanical properties according to functional purposes.

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