Improved high impact solid thermoplastic compositions, which is a di - block - impact strength modify contain agents

摘要

The present invention relates to improved thermoplastic compositions comprising polyphenylene ether and polyalkenyl aromatic resin. In these compositions, a diblock copolymer of from 45 to 60% polystyrene and from 55 to 40% hydrogenated polybutadiene by weight is utilized as at least a portion of the polyalkenyl aromatic resin. This block copolymer substantially improves the physical properties-most particularly, the impact strength-of the compositions.