Fire-retardant, intumescent composition and its use for the flam

Details Fire-retardant, intumescent composition and its use for the flam Fire-retardant, intumescent composition and its use for the flam

1981-04-06

1983-05-10

Welsh, Maurice J.

Compositions

Fire retarding

Intumescent

B32B 3300

Patent

active

043828841

ABSTRACT:
An intumescent, fire-retardant, aqueous composition which comprises (a) as a flameproofing agent, a water-soluble ammonium salt of a non-volatile inorganic acid, such as sulfamic acid, sulfuric acid or, in particular, phosphoric acid, (b) as a blowing agent, a water-soluble nitrogen compound, for example urea, which can be methylolated, or its derivatives and salts and (c) dextrin as a binder, (d) if desired, formaldehyde, and (e) if desired, further additives, for example wood preservatives, is used for the flameproof and heat-resistant treatment of very diverse substrates, preferably building timber, or for extinguishing burning substrates of all kinds. When the composition is used as a fire-extinguishing agent, it preferably additionally contains a foaming agent, and can contain a foam stabilizer.

REFERENCES:
patent: 3372131 (1968-03-01), Rohffs
patent: 3925137 (1975-12-01), Kamel
patent: 4216261 (1980-08-01), Dias

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