Low Molecular Weight Brominated Polymers, Processes For Their Manufacture And Their Use In Thermoplastic Formulations

摘要

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.

主权项

1. A flame retardant composition comprising a brominated anionic, chain transfer, vinyl aromatic polymer (ACTVAP) distribution, wherein the composition: (i) contains above 73 wt % bromine; and (ii) contains less than about 1,000 ppm (wt/wt) thermally labile Br, as determined by the Thermally Labile Bromine Test, the wt % and ppm values being based upon the total weight of the composition.