A flame retardant polyphenylene ether-styrene resin composition having a UL-94 rating of V-1 or better, a heat distortion temperature greater than 87°C and a melt viscosity at 200°C of less than 2,000 poise is obtained by incorporating with said polyphenylene ether-styrene resin composition from 3 to 6 parts by weight of a triaryl phosphate and from about 2-1/2 to about 5 parts by weight of a 3-hydroxyalkyl phosphine oxide having the formula:
wherein R, may be the same or a different radical selected from the group consisting of hydrogen and the methyl radicals, R2 is a redical of 4 to 8 carbon atoms and n is either zero or one.
一种阻燃聚苯醚-
苯乙烯树脂组合物,其 UL-94 等级为 V-1 或更高,热变形温度大于 87°C,200°C 时的熔融粘度小于 2,000 poise,其制备方法是在所述聚苯醚-
苯乙烯树脂组合物中加入 3 至 6 份(按重量计)三芳基
磷酸酯和约 2-1/2 至约 5 份(按重量计)3-羟基烷基氧化膦,其
化学式如下:
其中 R,可以是从氢和甲基基组成的组中选出的相同或不同的基,R2 是 4 至 8 个碳原子的复数,n 是 0 或 1。