Polystyrene foam made with only carbon dioxide as a blowing agen

Details Polystyrene foam made with only carbon dioxide as a blowing agen Polystyrene foam made with only carbon dioxide as a blowing agen

1993-06-17

1993-11-30

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 97, C08J 908

Patent

active

052666050

ABSTRACT:
The present invention is a styrenic polymer foam blown with solely carbon dioxide and a process for making that styrenic polymer foam. Foam sheet made by this process is especially useful for thermoforming purposes.

REFERENCES:
patent: 4344710 (1982-08-01), Johnson et al.
patent: 4420448 (1983-12-01), Krutchen
patent: 4424287 (1984-01-01), Johnson et al.
patent: 4470938 (1984-09-01), Johnson
patent: 4473665 (1984-09-01), Martini-Vvedensky et al.

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