Process for producing olefinic resin foams

Details Process for producing olefinic resin foams Process for producing olefinic resin foams

1979-01-15

1981-03-10

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

264 85, 264176R, 264DIG18, 264176F, 521 80, 521 95, 521 96, B29D 2700

Patent

active

042553717

ABSTRACT:
In a process for producing an olefinic resin foam which comprises the steps of forming a composition comprising an olefinic resin, a chemical blowing agent and a crosslinking agent into an unfoamed sheet-like or rod-like shaped article and foaming it by heating, the improvement wherein the heat-forming step is carried out in an oxygen-free atmosphere or in an atmosphere containing not more than 10% of oxygen.

REFERENCES:
patent: 3098831 (1963-07-01), Carr
patent: 3250731 (1966-05-01), Buhl et al.
patent: 3394214 (1968-07-01), Benning
patent: 4049757 (1977-09-01), Kammel et al.

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