Agent for modifying polystyrene foaming and foamed plastics and modified polystyrene foaming and foamed plastics

摘要

The subject of the invention is a modifier for expandable and expanded materials, polystyrene in particular, characterised by that it contains a fluorescent organic dye of the xanthene group in the form of 3,6- Bis(diethylamino)-9-[2-(ethoxycarbonyl)phenyl]xanthylium salt and also, optionally, ammonia, ethane-1,2-diol and toluene sulphonamide formaldehyde melamine copolymer. The subject of the invention are also modified expandable or expanded polystyrene materials containing - next to styrene polymer, organic blowing agents - the modifier.