Low molecular weight brominated polymers and their use in...

Details Low molecular weight brominated polymers and their use in... Low molecular weight brominated polymers and their use in...

C - Chemistry, Metallurgy

08

F

C08F 12/00 (2006.01) C08F 8/22 (2006.01) C08K 5/00 (2006.01)

Patent

CA 2687508

This invention relates flame retardant compositions containing low molecular weight brominated anionic, chain transfer, vinyl aromatic polymers, hereinafter "ACTVAP". The compositions can accommodate high bromine content while still exhibiting a low thermally labile bromine content. The compositions have glass transition temperatures, Tg, that are predictive of acceptable melt flows and heat distortion temperatures (HDT) in HIPS and ABS based formulations substrates. The compositions, are suitable flame retardant candidates for use in thermoplastic formulations, e.g. polystyrene and ABS formulations.

La présente invention concerne des compositions ignifuges contenant des polymères vinyle aromatiques, à transfert de chaîne, anioniques, bromés, de faible masse moléculaire, ci-après appelées <= ACTVAP >=. Les compositions peuvent prendre en compte une teneur en brome élevée tout en présentant encore une faible teneur en brome thermiquement labile. Les compositions ont des températures de transition vitreuse, Tg, qui sont prédictives des indices de fluage et des températures de distorsion thermique (HDT) acceptables dans des substrats de formulations à base d'HIPS et d'ABS. Les compositions sont des candidats ignifuges aptes à être utilisées dans des formulations thermoplastiques, par exemple des formulations de polystyrène et d'ABS.

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