FIELD: chemistry.
SUBSTANCE: invention relates to foaming granular materials having composition based on vinyl aromatic polymers containing: a) 65-99.8 wt % polymer obtained through polymerisation of 85-100 wt % of one or more vinyl aromatic monomers having general formula (I) 
, where n equals zero or is an integer ranging from 1 to 5, and Y is a halogen such as chlorine or bromine, or an alkyl or alkoxyl radical group having 1-4 carbon atoms, and 0-15 wt % α-alkylstyrene, in which the alkyl group contains 1-4 carbon atoms; b) 0.01-20 wt %, calculated from the ratio to polymer (a) soot, having average particle diametre ranging from 10 to 1000 nm and surface area ranging from 5 to 200 m2/g; c) at least one of the following additives (c1)-(c3): c 1) 0.01-5 wt %, calculated from the ratio to the polymer (a), graphite having average particle diametre ranging from 0.5 to 50 mcm; c2) 0.01-5 wt %, calculated from the ratio to the polymer (a), oxides and/or sulphates and/or plate-like dichalcogenides of group IIA, IIA, IIB, IVB, VIB or VIIIB metals; c3) 0.01-5 wt %, calculated from the ratio to the polymer (a), inorganic derivatives of plate-like silicon; d) 0.01-4.5 wt %, calcualted from the ratio to the polymer (a), nucleation agent; and e) 1-6 wt %, calculated from the ratio to 100 parts of total weight (a)-(d) of one or more foaming substances. The invention also discloses foamed articles and a method for continuous production in a mass of foaming granular materials.
EFFECT: invention enables to obtain foaming granular materials with high foaminess.
17 cl, 11 ex, 1 tbl
