Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1981-03-26
1982-06-15
Lieberman, Paul
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
525 71, C08L 5100, C08K 340
Patent
active
043350372
ABSTRACT:
A blend having advantageous toughness and impact resistance is prepared by hot working of a mixture of from about 5 to about 25% of a high impact polystyrene containing from about 4 to about 16% rubber, said high impact polystyrene having an average molecular weight which is significantly higher than the average molecular weight of the hereafter described styrene-maleic anhydride resin and about 95 to 75% of a styrene-maleic anhydride resin containing from about 80 to 94% styrene, from about 5 to 15% maleic anhydride, and from about 1 to about 5% rubber. The blend is especially useful in molding fiber-reinforced articles. The blend has outstanding toughness when green. That is, hot and freshly molded articles can be removed from the mold with minimized breakage, thus decreasing the amount of scrap arising from the breakage of a green molded item at the time of being ejected and/or removed from a mold.
REFERENCES:
patent: 4097550 (1978-06-01), Haaf et al.
patent: 4108925 (1978-08-01), Lee
patent: 4113797 (1978-09-01), Lee
Francis Peter S.
Lordi Frank E.
Atlantic Richfield Company
Lieberman Paul
Lilling Herbert J.
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