Process for the production of foamed materials from polyolefins

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

1981-06-15

1983-06-07

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264DIG5, 521 88, 521 96, 521143, 521909, 521910, C08J 906

Patent

active

043871704

ABSTRACT:
An improved process for the foaming of polyolefin materials is disclosed where the polyolefin is crosslinked by a peroxide and foamed by a chemical foaming agent combined with an auxiliary foaming agent is disclosed. According to the invention, the auxiliary foaming is a sterically hindered phenol and/or an organic phosphorus compound.

REFERENCES:
patent: 3098831 (1963-07-01), Carr
patent: 3098832 (1963-07-01), Pooley et al.
patent: 3278466 (1966-10-01), Cram et al.
patent: 3468821 (1969-09-01), Behrendsen
patent: 3645929 (1972-02-01), Normanton
patent: 3966651 (1976-06-01), Kleiner et al.
patent: 4203815 (1980-05-01), Noda et al.

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