Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1984-11-09
1985-09-24
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521 94, 521180, 521189, C08J 910
Patent
active
045433682
ABSTRACT:
The present invention relates to a foamable polyetherimide resin. These foamable polyetherimides have an effective amount of a chemical blowing agent which decomposes at a temperature equal to or greater than the glass transition temperature of the polyetherimide resin and does not have an adverse effect on the polyetherimide.
REFERENCES:
patent: 4097425 (1978-06-01), Niznik
patent: 4097671 (1978-06-01), Niznik
patent: 4158094 (1979-06-01), Niznik
patent: 4163037 (1979-07-01), Niznik
Floryan Daniel E.
Smearing Robert W.
Foelak Morton
General Electric Company
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