Thermoplastic foam and process for the preparation thereof

Details Thermoplastic foam and process for the preparation thereof Thermoplastic foam and process for the preparation thereof

1980-08-21

1981-12-15

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 94, C08J 900, C08F 2204, C08F 2206

Patent

active

043060366

ABSTRACT:
Anhydride-containing thermoplastic polymers are foamed with ammonium carbonate, ammonium bicarbonate and ammonium oxalate to provide foams having good heat distortion characteristics and undesirable organic blowing agents are avoided.

REFERENCES:
patent: 3200176 (1965-08-01), Baxter
patent: 3406230 (1968-10-01), Baxter et al.
patent: 3537885 (1970-11-01), Moore et al.
patent: 3547838 (1970-12-01), Moore et al.
patent: 3633630 (1972-01-01), Hanson et al.
patent: 3637459 (1972-01-01), Parrish et al.
patent: 3672951 (1972-06-01), Moore et al.
patent: 3770668 (1973-11-01), Corbett

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