FLAME RETARDANTS FOR USE IN STYRENIC FOAMS

摘要

The invention is a flame retardant for styrene foams. The flame retardant contains both aromatic bromine and an olefin. The olefin is an internal olefin. Desirable flame retardants are selected from: formula (I): wherein R₁ is C₁-C₆ and optionally containing a heteroatom or olefin; R₂ is C₁-C₆ and optionally containing a heteroatom or olefin; and R₃-R₁₂ is H, C₁-C₆ (optionally containing a heteroatom), or halogen; and further wherein the compound of formula (I) is present in a concentration of at least 50 percent of a trans isomer; formula (II): wherein R₁ is Halogen, C₁-C₆ and optionally containing a heteroatom or olefin; R₂ is Halogen, C₁-C₆ and optionally containing a heteroatom or olefin; and R₃-R₇ is H, C₁-C₆ (optionally containing a heteroatom), or halogen; and formula (III): wherein R₁ is Halogen, C₁-C₆ and optionally containing a heteroatom or olefin; R₂ is Halogen, H, C₁-C₆ and optionally containing a heteroatom or olefin; and R₃-R₆ is H, halogen.