Pyrotechnic compositions generating clean and nontoxic gases, containing a thermoplastic elastomer binder
US5525171A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1994 |
| Grant date | Jun 11, 1996 |
| Priority date | — |
| Expiry date | Nov 7, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC06B45/105
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
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: ##STR1## 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.