| abstract |
Procedure for the preparation of impact-resistant polymeric compositions endowed with flame-resistant properties, characterized in that it comprises combining in the melt: 1) a composition consisting of (a) 95-80% by weight of a thermoplastic propylene block copolymer -ethylene; 2) 0.5 to %%, preferably 0.9 to 1.7%, of basic bismuth carbonate (BiO)2CO3; 3) 0.3 to 1.3% of a triazine compound selected from melamine, ammoline, acetoguanamine, benzoguanamine and isocyanuric acid; 4) 2 to 10% of a chlorinated paraffinic face containing 40 to 70% by weight of chlorine; and 5) from 0.5 to 10% of a brominated organic compound selected from decabromodifonyl oxide, octabromodifonyl oxide, pentabromodifonyl oxide, 1,2-bis(2,4,6-tribromophenoxy)ethane, pentabromophenol, pentabromotoluene and ethyl -pentabromobenzene. |