| 摘要 |
Polymeric compositions endowed with high flame self-extinguishing properties, comprising a polymer selected from amongst olefinic polymers, polystyrene, polybutylene terephthalate, SAN and ABS copolymers, and also, for 100 parts of composition: (a) 20-50 parts of piperazine acid pyrophosphate; (b) 0-3 parts of at least a compound selected from TiO2, SiO2, silicic acid, in powder having particle size </=0.1 micron; (c) 0-35 parts of at least a compound selected from ammonium polyphosphate, melamine, melamine phosphate and pyrophosphate, polycarboxypiperazine, ethylene urea/formaldehyde condensates, as a substitute for an equal weight of compound (a), and in such amount that the composition still contains at least 5 parts of such compound (a).
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