| 摘要 |
Flame retardant additives for polystyrene comprise at least 50 per cent of a poly(brominated phenylene oxide) of MW at least 750 and containing at least 60% of bromine and an enhancing agent, e.g. antimony trioxide. Flame-retarded compositions which do not bloom comprise at least 50 per cent of high impact polystyrene, from 9 to 22 per cent of the poly(brominated phenylene oxide), and from 1 to 10 percent of the enhancing agent. |
