Uncompatibilized polyphenylene ether-polyamide compositions

Details Uncompatibilized polyphenylene ether-polyamide compositions Uncompatibilized polyphenylene ether-polyamide compositions

1998-09-08

2000-08-22

Woodward, Ana

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

Synthetic resins

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

525391, C08L 7700

Patent

active

061074152

ABSTRACT:
Compatible polyphenylene ether-polyamide blends are prepared without the need for compatibilizing compounds such as citric acid or maleic anhydride. The preparation method includes melt blending of the constituents, with other materials such as impact modifiers and fillers optionally being present, at an apparatus temperature maintained no lower than about 295.degree. C. and a pressure maintained below about 200 torr. Blending is preferably by extrusion, with filler and optionally a portion of the polyamide being introduced downstream.

REFERENCES:
patent: 5000897 (1991-03-01), Chambers
patent: 5120801 (1992-06-01), Chambers
patent: 5843340 (1998-12-01), Silvi et al.
"Relationship between morphology and Properties of N-6/PPO Polymer Alloy", by K. Chiba, International Polymer Science and Technology, vol. 16, No. 3, 1989.
International Seaerch Report.

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