High ARC tracking-index poly(phenylene oxide)-liquid crystalline poly

This invention relates to novel blends of poly(phenylene oxide), liquid crystalline polymers, and non-conductive fillers, and in particular, to such blends having improved combinations of high arc tracking-index, good toughness and good cosmetic appearance. Blends of theremotropic liquid crystalline polymers and unfunctionalized poly(phenylene oxides) and a non-conductive filler, in which the dispersed phase domain size preferably is relatively small and present in discrete particles. These blends have excellent comparative tracking index and can be used as molded articles in electronics or electrical applications.