초록 ▼

Mineral fibers, and products (e.g., building insulation products) formed of mineral fibers are treated, and thus rendered fire-resistant, by placing a phosphate-containing compound onto or in close proximity to the mineral fibers. The phosphate-containing compound is at least one which forms a high-

Mineral fibers, and products (e.g., building insulation products) formed of mineral fibers are treated, and thus rendered fire-resistant, by placing a phosphate-containing compound onto or in close proximity to the mineral fibers. The phosphate-containing compound is at least one which forms a high-temperature protective coating or layer on the surfaces of the mineral fibers. A preferred product of the invention will include two mineral wool layers with a septum carrying the phosphate-containing compound interposed therebetween. Exemplary phosphate-containing compounds include monoammonium phosphate, diammonium phosphate, dicalcium phosphate, monocalcium phosphate, phosphoric acid, aluminum phosphate, tetrasodium pyrophosphate, tetrapotassium pyrophosphate, sodium hexametaphosphate, potassium tripolyphosphate, sodium tripolyphosphate, ammonium polyphosphate, monosodium dihydrogen phosphate, and mixtures thereof.

대표청구항 ▼

A fire-resistant building insulation product consisting essentially of mineral wool and dicalcium phosphate in close proximity to said mineral wool, said dicalcium phosphate being present in an amount sufficient to form a high temperature coating on at least a portion of the mineral wool in close pr

A fire-resistant building insulation product consisting essentially of mineral wool and dicalcium phosphate in close proximity to said mineral wool, said dicalcium phosphate being present in an amount sufficient to form a high temperature coating on at least a portion of the mineral wool in close proximity thereto so that when the insulation product is exposed to elevated temperatures normally melting untreated mineral wool, the formed high temperature coating enables the mineral wool portion to withstand such elevated temperatures without melting, whereby the product is rendered fire-resistant.