Process for the production of foamed plastics from polyolefins

Details Process for the production of foamed plastics from polyolefins Process for the production of foamed plastics from polyolefins

1979-11-30

1981-05-05

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 95, 521 96, 521143, 521144, 521909, C08J 906, C08J 910

Patent

active

042660416

ABSTRACT:
A process is described for the production of foamed plastics from polyolefins by peroxide crosslinking and foaming by means of a chemical foaming agent under conditions of normal pressure the improvement wherein said foaming is carried out in the additional presence of a finely divided magnesium oxide and/or magnesium hydroxide and/or magnesium-hydroxide carbonate.

REFERENCES:
patent: 3461087 (1969-08-01), Pritchard
patent: 3645930 (1972-02-01), Wormanton et al.
patent: 4166890 (1979-09-01), Fried et al.
patent: 4187352 (1980-02-01), Klobbie
"Celogen-AZ", by R. R. Barnhart, Compounding Research Report No. 38, pp. 1-11, 1955.

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