Foamable composition and process for forming same

Details Foamable composition and process for forming same Foamable composition and process for forming same

1986-10-09

1987-12-01

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 79, 521 81, 521180, 521182, 525439, 525535, C08J 908

Patent

active

047105224

ABSTRACT:
Foamable and foamed compositions comprising blends of an aromatic sulfone polymer, a linear polyester and an aromatic polycarbonate are disclosed. The composition, useful as an ovenable food container, is formed in a process in which the three components are intimately admixed, heated and extruded below or above the foamable temperature, depending upon whether a foamable or foamed composition is desired.

REFERENCES:
patent: 3470114 (1969-09-01), Siggel et al.
patent: 4097425 (1978-06-01), Niznik
patent: 4174432 (1979-11-01), Niznik
patent: 4462947 (1984-07-01), Huggard
patent: 4466933 (1984-08-01), Huggard
patent: 4544677 (1985-10-01), Allen et al.

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