Abstract: The invention relates to a biodegradable halogen-free flame retardants composition used for fire-safety and prevention, that limits and extinguishes fires by means of increased resistance to ignition, slowing down burning rates and the rate of heat, smoke and toxic gas release from polymers with different physical and chemical properties and structure, such as textiles, wooden materials, paper, cardboard, corrugated board, leather, cellular polystyrene, foamed polyurethane, and items made of them. The composition according to the invention contains orthophosphoric acid, urea, triethanolamine, ammonia water, polydimethylsiloxane, surfactant, which may be anionic, cationic, amphoteric, non-ionic or mixtures thereof and water.

Abstract: The invention relates to a method for plasma chemical surface modifying of materials and items, and specifically for plasma aided impregnation with solutions containing fire retardants to make porous materials. The subject matter of the invention is solved by the method of plasma chemical surface modification of porous materials and workpieces to provide fire spread and ignition resistance consisting in autoclave high pressure impregnation and further drying at room temperature, a characteristic of which is that before the impregnation the surface of the material or the workpiece is submitted to a treatment for a period of 3 to 300 seconds with cold non-equilibrium plasma of glow electrical discharge at atmospheric pressure that burns under voltage of 1 to 3 kV and at a frequency of 50 Hz to 100 kHz.