Method of safely initiating combustion of a gas generant composition using an autoignition composition
US5739460A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1997 |
| Grant date | Apr 14, 1998 |
| Priority date | — |
| Expiry date | Jan 30, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC06C9/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to an autoignition composition for safely initiating combustion of a main pyrotechnic charge in a gas generator or pyrotechnic device exposed to flame or a high temperature environment. The autoignition compositions of the invention include a mixture of an oxidizer composition and a powdered metal, wherein the oxidizer composition includes at least one of an alkali metal or an alkaline earth metal nitrate, a complex salt nitrate, such as Ce(NH.sub.4).sub.2 (NO.sub.3).sub.6 or ZrO(NO.sub.3).sub.2, a dried, hydrated nitrate, such as Ca(NO.sub.3).sub.2 .multidot.4H.sub.2 O or Cu(NO.sub.3).sub.2 .multidot.2.5H.sub.2 O, silver nitrate, an alkali or alkaline earth chlorate, an alkali or alkaline earth metal perchlorate, ammonium perchlorate, a nitrite of sodium, potassium, or silver, or a solid organic nitrate, nitrite, or amine, such as guanidine nitrate, nitroguanidine and 5-aminotetrazole, respectively. The present invention also relates to a method for initiating a gas generator or pyrotechnic composition in a gas generator or pyrotechnic device exposed to flame or a high temperature environment. In the method of the invention, the gas generator or pyrot…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.