PROCESS FOR THE PREPARATION OF CELLULAR MATERIALS, PERMANENTLY SELF-EXTINGUISHING, THESE MATERIALS HAVING LOW DENSITY AND HIGH MECHANICAL CHARACTERISTICS

摘要

The subject of the invention is a process for the production of permanently self-extinguishing cell materials having a low density and high mechanical properties. The above-mentioned process is characterized by FACT THAT A BROMINATED UNSATURATED POLYESTER RESIN CONTAINING A QUANTITY OF BROMINE BETWEEN 10 AND 30 AND CONTAINING CONVENTIONAL ADDITIVES IS SUBJECTED TO THE FORMATION OF FOAM BY MECHANICAL INCORPORATION OF A GAS OR MIXTURE OF GAS UNTIL A CROSS-LINKABLE LIQUID FOAM MAY BE OBTAINED SUBSEQUENTLY SUBJECT TO CROSS-LINKING BY CONVENTIONAL METHODS. / P