Pyrotechnic compositions generating clean and nontoxic gases, containing a thermoplastic elastomer binder

摘要

The present invention relates to the field of gas-generating pyrotechnic compositions intended for motor vehicle safety. The compositions according to the invention include: an oxygen-containing thermoplastic binder and especially a block aliphatic copolymer of formula: <IMAGE> in which: PA is a polyamide block, PE is a polyether block, n is a number between 2 and 10, an energetic plasticizer which is a polyglycidyl azide, an oxidizing charge in which at least 85% of its weight consists of ammonium nitrate. The compositions according to the invention burn without solid residues and can be employed in gas generators without a filter chamber.