Fire-retardant, intumescent composition and its use for the flameproofing of substrates, and as a fire-extinguishing agent comprising an ammonium salt, a water-soluble nitrogen compound as a blowing agent and dextrin

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