US2010032063A1PendingUtilityA1

Lead-free nontoxic explosive mix

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Individually held — no corporate assignee on recordPriority: Jan 30, 2003Filed: Feb 10, 2005Published: Feb 11, 2010
Est. expiryJan 30, 2023(expired)· nominal 20-yr term from priority
Inventors:George C. MeiJames W. Pickett
C06C 7/00C06B 33/04
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PatentIndex Score
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Claims

Abstract

The present invention is directed to a lead-free, nontoxic pyrotechnic composition, comprising: 30-80 wt % of bismuth subnitrate; and 10-50 wt % of a fuel, wherein all weight percents are based on the total weight of the composition. The present invention is also directed to a lead-free, nontoxic priming composition, comprising: 20-80 wt % of the above nontoxic pyrotechnic composition; 20-50 wt % of an initiator explosive; and 2-10 wt % of a sensitizer, wherein all weight percents are based on the total weight of the composition.

Claims

exact text as granted — not AI-modified
1 . A lead-free, nontoxic pyrotechnic composition, comprising:
 approximately 60 wt % of bismuth subnitrate; and   approximately 40 wt % of a fuel,   wherein all weight percents are based on the total weight of said composition, and wherein said composition is substantially lead-free and substantially nontoxic.   
   
   
       2 . (canceled) 
   
   
       3 . The lead-free, nontoxic pyrotechnic composition of  claim 1 , wherein said fuel is selected from the group consisting of amorphous boron, aluminum powder, zirconium powder, titanium powder, zinc powder, carbon, silicon, antimony sulfide, bismuth sulfide, iron sulfide, zinc sulfide, calcium silicide, copper silicide, and combinations thereof. 
   
   
       4 . (canceled) 
   
   
       5 . The lead-free, nontoxic pyrotechnic composition of  claim 1 , further comprising a friction agent. 
   
   
       6 . The lead-free, nontoxic pyrotechnic composition of  claim 5 , wherein said friction agent is selected from the group consisting of glass particles, silicon carbide, silicon, crystalline boron, ceramics, and combinations thereof. 
   
   
       7 . The lead-free, nontoxic pyrotechnic composition of  claim 5 , wherein said friction agent comprises from about 0 to about 50 wt % of said composition. 
   
   
       8 . The lead-free, nontoxic pyrotechnic composition of  claim 1 , further comprising additional ingredients selected from the group consisting of binders, PVA (polyvinylacetate), Karaya, Tragacanth, Guar, Gum Arabic, and combinations thereof. 
   
   
       9 .- 24 . (canceled)

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