CRUDE MIXTURE FOR FIRE-RETARDANT COATING Russian patent published in 2012 - IPC C09D5/18 C09K21/02 C09K21/00 C09D1/06 C04B28/26 

FIELD: chemistry.

SUBSTANCE: invention is meant for fireproofing building structures, primarily metallic structures. The crude mixture contains binder and aggregate - vermiculite. The binder used is composite binder which contains 60-80% portland cement and 20-40% finely dispersed vermiculite cyclone dust, which is a foamed vermiculite production waste. The aggregate used is 0.63-2.5 fraction foamed vermiculite. The ratio of the composite binder to foamed vermiculite is 1:1.5-1:2.5 by volume.

EFFECT: higher fire-retardant efficiency of the disclosed compositions, wider range of domestic fire-retardant materials, reduced cost thereof and avoiding scarce materials, replacement thereof with production wastes, as well as improved environmental friendliness and technological simplicity.

3 cl, 2 tbl, 6 ex