Process for foaming thermoplastic aromatic polycarbonates

Details Process for foaming thermoplastic aromatic polycarbonates Process for foaming thermoplastic aromatic polycarbonates

1985-02-04

1986-01-28

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 95, 521 97, 521180, C08J 910

Patent

active

045672105

ABSTRACT:
The present invention relates to a process for foaming thermoplastic aromatic polycarbonates, 2-phenyl-1-oxa-3,4-diazol-5-ones acylated in the 4-position being used in combination with cyanuric acid.

REFERENCES:
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patent: 3779954 (1973-12-01), Wirth et al.
patent: 4065401 (1977-12-01), Cohnen et al.
patent: 4097425 (1978-06-01), Niznik
patent: 4110273 (1978-08-01), Cohnen et al.
patent: 4163037 (1979-07-01), Niznik
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patent: 4263409 (1981-04-01), Liberti
patent: 4288560 (1981-09-01), Kirchmayr
patent: 4313873 (1982-02-01), Lim
patent: 4500653 (1985-02-01), Schmidt et al.
Kunststoffe 62 (10), 687 (1972).
Chem. Ber. 82, pp. 121-123 (1949).
Tetrahedron Letters (44), pp. 3875-3878 (1974).

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