High impact thermoplastic compositions containing diblock impact

Details High impact thermoplastic compositions containing diblock impact High impact thermoplastic compositions containing diblock impact

1981-10-02

1985-10-01

Briggs, Sr., Wilbert J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 98, C08L 5302, C08L 7104

Patent

active

045447039

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.

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