Low-smoke pyrotechnic compositions
AssigneeThe Regents of the University of California
InventorsMichael A. Hiskey, David E. Chavez, Darren L. Naud
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Abstract
A low-smoke producing pyrotechnic composition including a high-nitrogen content, low-carbon content energetic material, an oxidant and a colorant is disclosed together with the use of selected metal salts of a high-nitrogen content, low-carbon content energetic material as the colorant.
Claims6
In a low-smoke producing pyrotechnic composition including a low smoke fuel;
- an oxidizing agent;
- and, a colorant, the improvement wherein said colorant is a metal salt of a high-nitrogen content, low-carbon content energetic material selected from the group consisting of 5,5′-bis-1H-tetrazole, bis(1(2)H-tetrazol-5-yl)-amine, and the monohydrate of bis(1(2)H-tetrazol-5-yl)-amine.
A blue emitting pyrotechnic composition comprised of a high-nitrogen content, lowcarbon content energetic material selected from the group consisting of 5,5′-bis-1H-tetrazole, salts of 5,5′-bis-1H-tetrazole, bis(1(2)H-tetrazol-5-yl)-amine, the monohydrate of bis(1(2)H-tetrazol-5-yl)amine, salts of bis(1(2)H-tetrazol-5-yl)-amine, dihydrazino-s-tetrazine, derivatives of dihydrazino-s-tetrazine and salts of dihydrazino-s-tetrazine, an oxidizer and a copper salt of a high-nitrogen content, low-carbon content energetic material selected from the group consisting of 5,5′-bis-1H-tetrazole, bis(1(2)H-tetrazol-5-yl)-amine, and the monohydrate of bis(1(2)H-tetrazol-5-yl)-amine, said blue emitting pyrotechnic composition further characterized as having C.I.E. 1931 chromaticity diagram index values of x<0.20 and y<0.18.
A composition of matter comprising a salt of 5,5′-bis-1H-tetrazole, said salt including a cation selected from the group consisting of NH2NH3+, NH3OH+, Sr+ and +H3NHN—(C2N4)—NHNH3+ wherein said (C2N4) is a tetrazine ring system.
Dependencies are inferred from the claim text.