This cellular materials, self - extinguishing of a permanent manner, these materials having a low density and of the castings

摘要

The invention has for its object a process for the production of cellular materials, self - extinguishing of a permanent manner, with a low density and of the castings. / p & & p & the aforesaid process is characterizes by the fact that a polyester resin unsaturated brominated containing a quantity of bromine lie between 10 and 30 and which contain conventional additives, is subjected to the form of foam by incorporating mechanical of a gas or a mixture of gas to the fact that a liquid which can be cross-linked foam is obtained, the latter being subsequently subjected to the crosslinking by conventional methods.