Fire-retardant composition and method of rendering cellulosic ma

Details Fire-retardant composition and method of rendering cellulosic ma Fire-retardant composition and method of rendering cellulosic ma

1977-12-13

1979-01-02

Sebastian, Leland A.

Compositions

Fire-extinguishing

Foam-stabilizant or colloid-stabilizant containing

106 15FP, 252 2, C09K 328

Patent

active

041326555

ABSTRACT:
The fire-retardant composition of U.S. Pat. No. 3,983,040 is improved to a surprising extent by the addition thereto of from about 10% to about 40% by weight of ammonium sulfate. In producing the improved composition, the patented composition is first made by reacting a pulverized borate ore selected from the group consisting of calcium, sodium, magnesium, and potassium borates and mixtures thereof, with sulfuric acid and water for a time sufficient to produce a substantially dry reaction product containing a boric acid constituent and a sulfate constituent. After drying, the reaction product is pulverized and the ammonium sulfate, also in pulverized condition, is intimately mixed therewith, or the two may be pulverized together to produce the final improved product. Cellulosic material is rendered fire-retardant by application of the product thereto.

REFERENCES:
patent: 3897387 (1975-07-01), O'Shaughnessy
patent: 4063003 (1977-12-01), Hartman
patent: 4076871 (1978-02-01), Short et al.

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