Flameproof polystyrene foam and process for the manufacture ther

Details Flameproof polystyrene foam and process for the manufacture ther Flameproof polystyrene foam and process for the manufacture ther

1979-03-15

1980-04-15

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

260 457R, 521 85, 521 88, 521 92, 521 94, 521123, 521139, 521146, 521147, 521148, 521907, C08J 914

Patent

active

041984862

ABSTRACT:
The flameproof styrene polymer foam in accordance with this invention is obtained by melting a granular mixture of styrene polymer and aluminum hydroxide having a grain size of 20-100 .mu.m and a specific surface of below 1 m.sup.2 /g in an extruder, incorporating a physical expanding agent, and homogenizing and extruding the mixture.

REFERENCES:
patent: 3639298 (1972-02-01), Lister et al.
patent: 3699041 (1972-10-01), Sauderford et al.
patent: 3865760 (1975-02-01), Pitts et al.
patent: 3909464 (1975-09-01), Auorga

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