Process for producing foamed body of polycarbonate resin and foa

Details Process for producing foamed body of polycarbonate resin and foa Process for producing foamed body of polycarbonate resin and foa

1997-01-14

1998-12-29

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 97, 521138, 521182, 521 81, C08J 904, C08J 914

Patent

active

058542949

ABSTRACT:
A polycarbonate resin-containing composition is extruded through a die together with a blowing agent to produce a foamed body. The composition has a storage modulus G'.sub.A dyn/cm.sup.2 at a temperature of 250.degree. C. and an angular frequency of 0.1 rad/sec and a storage modulus G'.sub.B dyn/cm.sup.2 at a temperature of 250.degree. C. and an angular frequency of 10 rad/sec, wherein the storage modulus G'.sub.A and storage modulus G'.sub.B satisfy the following conditions:

REFERENCES:
patent: 4500653 (1985-02-01), Schmidt et al.
patent: 4728673 (1988-03-01), Hammer et al.
patent: 5158985 (1992-10-01), Kohler et al.

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