Fire-retardant putty-like compositions

Details Fire-retardant putty-like compositions Fire-retardant putty-like compositions

C - Chemistry, Metallurgy

09

D

400/6445, 400/90

C09D 5/34 (2006.01) C08L 11/00 (2006.01) C09D 5/18 (2006.01)

Patent

CA 1120632

TITLE OF THE INVENTION FIRE-RETARDANT PUTTY-LIKE COMPOSITIONS ABSTRACT OF THE DISCLOSURE A composition for filling the spaces in bores penetrat- ing walls and floors of buildings and having electric wires and cables extending therethrough or for filling the clear- ances at the joints of interior finishing materials of build- ings. The composition comprises (a) 100 parts by weight of a curable polychloroprene in a liquid state at room temp- erature, (b) about 200 to about 700 parts by weight of a hydrated metallic oxide, and (c) about 20 to about 100 parts by weight of a heat-resistant fibrous material. The compo- nents (b) and (c) are contained in a combined amount of at least about 250 parts by weight per 100 parts by weight of the component (a). The composition will not soften, sag or drip in molten drops even when subjected to the high-temp- erature conditions of a fire, and gives a tough residual product retaining the original shape when burned and ashed, effectively preventing the spread of fire and assuring out- standing smoketightness. ' , .

331859

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