| abstract |
The present invention relates to modified foamable and foamed materials which, in addition to polystyrene, carbonic acid diamide and stilbene derivatives, contain also a dispersion stabilizer in the form of carboxymethylcellulose sodium; a dispersing agent in the form of a water solution of cationic surface-active agent, an endogenous and exogeneous fires inhibitor in the form of di-nitrosopentamethylenetetramine and a solution of water silicic acid sol. The present invention also relates to a method of obtaining foamable and foamed materials, in particular polystyrene which the method reduces considerably, amongst other things, the risk of exposure to chemicals emitted during the processes of pyrolysis of these materials. |