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    • 6. 发明授权
    • Flame retardant styrene modified polyphenylene ether resins
    • 阻燃苯乙烯改性聚苯醚树脂
    • US4556684A
    • 1985-12-03
    • US644409
    • 1984-08-27
    • Louis T. GunkelCharles V. Juelke
    • Louis T. GunkelCharles V. Juelke
    • C07F9/12C08K5/526C08K5/52
    • C07F9/12C08K5/526
    • Flame retardant polyphenylene ether resin compositions are described in which the flame retardant agent is a mixture (by weight) of the following:(a) about 1.5% to about 3.0% of: ##STR1## (b) about 15.0% to about 20.0% of: ##STR2## (c) about 23.0% to about 28.0% of: ##STR3## (d) about 47.0% to about 56.0% of: ##STR4## wherein R.sub.1 and R.sub.2 are each selected from the class consisting of hydrogen, methyl and ethyl, it being understood that when one of R.sub.1 and R.sub.2 is hydrogen the other is ethyl and when one of R.sub.1 and R.sub.2 is methyl the other is methyl, the resulting two methyl groups being in the 2,4-, 2,5-, 2,3-, 3,4- and 3,5-positions, it being further understood that the ethyl groups are almost entirely in the meta (m) and para (p) positions.
    • 描述了阻燃聚苯醚树脂组合物,其中阻燃剂是以下的混合物(重量):(a)约1.5%至约3.0%:(b)约15.0%至约20.0% (c)约23.0%至约28.0%:(d)约47.0%至约56.0%的:其中R 1和R 2各自选自氢,甲基 和乙基,当R1和R2中的一个是氢时,另一个是乙基,当R 1和R 2之一是甲基时,另一个是甲基,得到的两个甲基在2,4-二 ,2,3,4a和3,5位,还可以理解的是,乙基几乎全部在间位(m)和对位(p)位。