US2011011502A1PendingUtilityA1

Priming mix

40
Individually held — no corporate assignee on recordPriority: Jul 17, 2009Filed: Apr 9, 2010Published: Jan 20, 2011
Est. expiryJul 17, 2029(~3 yrs left)· nominal 20-yr term from priority
Inventors:George C. MeiDuane E. Lowe
C06B 45/02C06C 7/00
40
PatentIndex Score
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Claims

Abstract

An improved priming mix of the type including an initiator, fuel, and oxidizer, and pyrotechnic component. The improvement being the inclusion of between about 3% and about 20% propellant superfines, the superfines comprising particles less than 100 μm.

Claims

exact text as granted — not AI-modified
1 . An improved priming mix of the type including an initiator, fuel, and oxidizer, and pyrotechnic component, the improvement comprising between about 3% and about 20% propellant superfines, the superfines comprising particles less than 100 μm. 
     
     
         2 . The improved priming mix according to  claim 1 , comprising between about 5% and about 8% superfines. 
     
     
         3 . The improved priming mix according to  claim 2  wherein the superfines have a median diameter of between about 20 μm and about 30μ. 
     
     
         4 . The improved priming mix according to  claim 3  wherein the superfines have a median diameter of between about 23 μm and about 28μ. 
     
     
         5 . The improved priming mix according to  claim 2  wherein the superfines have a surface area of at least 2000 cm 2  per cm 3  of bulk material. 
     
     
         6 . The improved priming mix according to  claim 5  wherein the superfines have a surface area of at least 3500 cm 2  per cm 3  of bulk material. 
     
     
         7 . The improved priming mix according to  claim 5  wherein at least 10% of the total surface area of the superfines is from particles of 10 μm or less. 
     
     
         8 . The improved priming mix according to  claim 7  wherein at least 33% of the total surface area of the superfines is from particles of 10 μm or less 
     
     
         9 . The improved priming mix according to  claim 5  wherein at least 80% of the total surface area of the superfines is from particles of 30 μm or less. 
     
     
         10 . The improved priming mix according to  claim 1 , wherein the particles of the superfines have an aspect ratio (greatest dimension/smallest dimension) of less than 2. 
     
     
         11 . The improved priming mix according to  claim 1  wherein the superfines are −450 mesh. 
     
     
         12 . The improved priming mix according to  claim 1  wherein at least 80% of the particles are less than about 80 μm. 
     
     
         13 . The improved priming mix according to  claim 12  wherein at least 50% of the particles are less than about 40 μm. 
     
     
         14 . The improved priming mix according to  claim 1  wherein the superfines comprise superfines of a single-base propellant. 
     
     
         15 . The improved priming mix according to  claim 1  wherein the superfines comprise superfines of a double-base propellant. 
     
     
         16 . The improved priming mix according to  claim 1  wherein the superfines comprise superfines of a triple-base propellant. 
     
     
         17 . The improved priming mix according to  claim 1  wherein the superfines comprise superfines of at least two of single-base, double-base, and triple-base propellants. 
     
     
         18 . A priming mix comprising:
 from 30% to 40% lead styphenate,   from 2% to 6% tetrazene   from 0% to 6% PETN   from 3% to 8% superfines;   from 2% to 5% aluminum; and   from 35% to 55% Ba(NO 3 ) 2 . More specifically, an exemplary priming mix was made with about 35% lead styphenate, about 5% tetrazene, about 3% PSTN, about 5% propellant superfines, about 3% aluminum, and about 50% Ba(NO 3 ) 2 .   
     
     
         19 . A primer composition, comprising:
 35% KDNBF;   4% Tetrazene;   5% superfines;   15% iron sulfide (ferrous sulfide) FeS; and   41% Potassium Nitrate KNO 3 .   
     
     
         20 . A primer composition, comprising:
 42% KDNBF   6% Tetrazene   8% superfines   7% Boron; and   37% Potassium Nitrate KNO 3 .   
     
     
         21 . A primer composition, comprising:
 42% KDNBF;   6% Tetrazene;   8% superfines;   7% Boron; and   37% Barium Nitrate Ba(NO 3 ) 2 .   
     
     
         22 . A primer composition, comprising:
 35% KDNBF;   4% Tetrazene;   5% superfines;   15% Antimony Sulfide (Sb 2 S 3 ); and   41% Potassium Nitrate KNO 3 .   
     
     
         23 . A primer composition, compirising:
 35% KDNBF;   5% Tetrazene;   15% superfines;   15% iron sulfide (ferrous sulfide) FeS; and   30% Manganese peroxide MnO 2 .

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