High impact thermoplastic compositions containing diblock impact modifier
AssigneeGeneral Electric Company
InventorWilliam R. Haaf
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Abstract
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.
Claims8
In a thermoplastic composition comprising a blend of polyphenylene ether and polyalkenyl aromatic resin, the improvement wherein said polyalkenyl aromatic resin comprises diblock copolymer of from 50 to 60% polystyrene and from 50 to 40% hydrogenated polybutadiene by weight.
Dependencies are inferred from the claim text.