The influence of an N-alkoxy HALS on the decomposition of a brominated fire retardant in polypropylene

Design and Utilization of Nitrogen Containing Flame Retardants Based on N-Alkoxyamines, Azoalkanes and Related Compounds

“…Decomposition experiments [33,34] of tris(3-bromo-2,2-bis(bromomethyl)propyl)phosphate (TBBPP) and analysis via nuclear magnetic resonance, electron spin resonance, and gas chromatography/mass spectroscopy combination showed that there is an interaction of NOR and TBBPP below the decomposition temperature of polypropylene. In the first step, the nitroxyl radical is formed from NOR, which abstracts a bromomethyl group from TBBPP.…”

Combined effect of hindered amine light stabilizer and ultraviolet absorbers on photodegradation of poly(vinyl chloride)

“…Other researchers have concluded that HALS stabilizes the polymer by acting as a quencher for the complex between oxygen and the polymer [13]. The HALS also can be used as a thermal antioxidant [9], or in fire‐retarded materials [14].…”

Synthesis of a novel macromolecular charring agent with free-radical quenching capability and its synergism in flame retardant polypropylene

“…During the combustion of PP/HAPN/ APP-2 in the oxygen concentration of 29.5%, the flame flickered obviously with some squeaking sound and self-extinguished at 36 s after igniting, while the pure PP burnt violently in the oxygen concentration of 18.0%. This might be because during combustion, HAPN could decompose and generate nitroxyl radical, which could quench the active free-radicals in the gas phase to block the radical chain reaction and thus restrain the flame [15]. Table 2.…”

“…Recently, it is reported that hindered amines have great synergistic effect with many kinds of flame retardants (such as IFR) because of their outstanding active free-radical quenching capability in the gas phase [15,16]. Cao and co-workers [17] synthesized a hindered amine containing silane (Si-NOR) by sol-gel reaction and used it as the flame retardant synergist of IFR.…”