METHOD OF PRODUCING FIRE-RETARDANT COATING FOR FOAMED POLYSTYRENE PLATES (VERSIONS) Russian patent published in 2024 - IPC C09D5/18 C09D1/04 

FIELD: fire-retardant materials.

SUBSTANCE: invention relates to fire-retardant materials and can be used to protect surfaces of foamed polystyrene plates. Method of producing a fire-retardant coating for foamed polystyrene boards involves applying on the surface of one or more layers of a composition containing a binder and a filler, with each layer drying. Composition contains liquid sodium glass and a polyvinyl acetate dispersion as a binder, kaolin as a filler and as functional additives titanium dioxide, vermiculite, finely dispersed silicon dioxide and shungite. Composition is prepared by successive loading into a mixer of kaolin, liquid sodium glass, silicon dioxide, titanium dioxide, shungite, vermiculite and polyvinyl acetate dispersion. Also disclosed is a version of the method of producing a fire-retardant coating for foamed polystyrene boards.

EFFECT: method of producing a fire-retardant coating for foamed polystyrene boards with high adhesion to the surface, which provides high fire protection of foamed polystyrene boards and environmental safety.

2 cl, 1 dwg, 2 tbl, 12 ex