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Flame-resistant polyolefine composns - contg nuclear-brominated diphenyls and highly chlorinated cpds as flame-retardants
Flame-resistant polyolefine composns - contg nuclear-brominated diphenyls and highly chlorinated cpds as flame-retardants
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机译:阻燃聚烯烃组合物-含核溴联苯和高度氯化的cpds作为阻燃剂
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摘要
Flame-resistant polyolefin (e.g. HDPE, LDPE, polypropylene) compsns. contain diphenyls which have =5 Br-substs. in the nucleus, (e.g. octadibromodiphenyl) and highly-chlorinated macromolecular org. cpds. (e.g. chloroparaffin or post-chlorinated PVC contg. 70 wt.% Cl) in amts. such that the Br-content is 5.0 - 12.0 wt.%, and the Cl-content is 1.25 - 5.0 wt.%. 5-15 wt.% Sb2O3 are also present in the compsns. The disclosed additive combination has flame-retardant action even at relatively low combustion temps. i.e. in event of smouldering (as distinct from flaring) fires.
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机译:阻燃聚烯烃(例如HDPE,LDPE,聚丙烯)组成。包含具有> = 5 Br-取代基的二苯基。 (例如八二溴二苯)和高度氯化的大分子有机物cpds。 (例如氯石蜡或氯化后的PVC,含70%(重量)Cl)。因此,Br含量为5.0-12.0wt。%,Cl含量为1.25-5.0wt。%。组合物中还存在5-15重量%的Sb 2 O 3。所公开的添加剂组合即使在较低的燃烧温度下也具有阻燃作用。即发生闷燃(不同于燃烧)火灾。
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