Metal complexes for use as gas generants

Details Metal complexes for use as gas generants Metal complexes for use as gas generants

C - Chemistry, Metallurgy

06

D

C06D 5/06 (2006.01) C06B 29/00 (2006.01) C06B 31/00 (2006.01) C06B 41/00 (2006.01) C06B 43/00 (2006.01) B60R 21/26 (2006.01)

Patent

CA 2181543

Gas generating compositions and methods for their use are provided. Metal complexes are used as gas generating compositions. These complexes are comprised of a cationic metal template, sufficient oxidizing anion to balance the charge of the complex, and a neutral ligand containing hydrogen and nitrogen. The complexes are formulated such that when the complex combusts nitrogen gas and water vapor is produced. Specific examples of such complexes include metal nitrite ammine, metal nitrate ammine, and metal perchlorate ammine complexes, as well as hydrazine complexes. Such complexes are adaptable for use in gas generating devices such as automobile air bags.

Cette invention concerne des compositions générant du gaz et des procédés d'utilisation de ces dernières. On utilise des complexes de métaux comme compositions générant du gaz. Ces complexes sont constitués d'une matrice de métal cationique, de suffisamment d'anion oxydant pour équilibrer la charge du complexe et d'un ligand neutre contenant de l'hydrogène et de l'azote. Ces complexes sont formulés de sorte que la combustion du complexe produise de l'azote et de la vapeur d'eau. Des exemples spécifiques de ces complexes comprennent les complexes d'ammoniacate de nitrite de métal, d'ammoniacate de nitrate de métal et d'ammoniacate de perchlorate de métal ainsi que des complexes d'hydrozine. Ces complexes peuvent être adaptés pour être utilisés dans des dispositifs générant du gaz tels que des coussins d'air de sécurité pour automobiles.

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