Process for obtaining permanently self-extinguishing cellular ma

Details Process for obtaining permanently self-extinguishing cellular ma Process for obtaining permanently self-extinguishing cellular ma

1980-11-05

1983-01-25

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521132, 521 92, 521123, 521182, 521907, C08V 930, C08L 6700

Patent

active

043704255

ABSTRACT:
Process for the preparation of permanently self-extinguishing cellular maials essentially comprising brominated unsaturated polyester resins, containing conventional additives, having a density comprised between 300 and 700 g/l correlated to a resistance to compression, as of a formed product, higher than the curve shown in the attached FIG. 1, said process being characterized by the fact that a brominated unsaturated polyester resin, containing an amount of bound bromine comprised between 10 and 30%, preferably between 12 and 25% by weight, containing conventional additives, is subjected to foaming by mechanical incorporation therein of a gas or a gas mixture, until crosslinkable liquid foams are obtained, which latter are subsequently subjected to crosslinking by conventional methods. The present invention further refers to permanently self-extinguishing cellular materials thus obtained.

REFERENCES:
patent: 2931746 (1960-04-01), Robitschek et al.
patent: 3131115 (1964-04-01), Robitschek et al.
patent: 3260688 (1966-07-01), Watanabe et al.
patent: 3362919 (1968-01-01), Rood
patent: 3882055 (1975-05-01), Koerner et al.

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