US Patent 7226963 Conductive polyphenylene ether-polyamide blend

The present invention relates to a thermoplastic resin composition and a method for making the same. The composition comprises the reaction product of about 10 wt % to about 50 wt % polyphenylene ether, about 35 wt % to about 65 wt % polyamide, preferably about 0.4 wt % to about 3.0 wt % carbon fibrils, and optionally about 5 wt % to about 40 wt % talc, up to about 10 wt % compatibilizing agent and up to about 20 wt % impact modifier. The method comprises forming a carbon masterbatch with polyamide and introducing the masterbatch and the polyamide subsequent to compounding the polyphenylene ether with a compatibilizing agent.