Flame retardants for polystyrenes in commercial use or development

Flame retardant styrenic polymers find utility in applications, such as building insulation and electronic enclosures. The most effective flame retardants are halogen containing compounds, which act by inhibiting the radical combustion reactions occurring in the vapor phase. The state of flame retardant plastics is in a state of flux, due to influences of regulatory and environmental factors. The value of having a flame retardant in styrenics has been shown by a careful life cycle study balancing fire risk against environmental risk. The environmental risk from fire products, such as polycyclic aromatic hydrocarbons is taken into account, the environmental balance also appears favorable for the flame retardants. European statistics show very substantial life-saving benefits from the use of flame retardants.