Compositions of gas generates with polymer adhesive

Abstract

Compositions of gas generants with polymer adhesive are disclosed. The gas generant compositions include nitrogen containing guanidines, hydrogen containing tetrazole, oxidizing agent, polymer adhesive, and residue aggregating agent. The nitrogen containing guanidines range from 25 to 45 weight percent. The hydrogen containing tetrazole is 10-30 weight percent. The nitrate oxidizing agent is 20-40 weight percent. The perchlorate oxidizing agent ranges from 1 to 15 weight percent. The polymer adhesive is 0.1-3 weight percent and the residue aggregating agent weights from 1 to 15 weight percent. The gas generant pellets are applied to inflators for generating gas so that the air bag is inflating instantly for protecting driver and passengers in automobile.

1 . Gas generant compositions comprising:
 25-45 weight percent nitrogen containing guanidines;   10-30 weight percent hydrogen containing tetrazole or salts thereof;   20-40 weight percent nitrate oxidizing agent;   1-15 weight percent perchlorate oxidizing agent;   0.1-3 weight percent polymer adhesive; and   1-15 weight percent residue aggregating agent.   
   
   
       2 . The gas generant compositions as claimed in  claim 1 , wherein the nitrogen containing guanidine is selected from the group consisting of guanidine nitrate, monoaminoguanidine nitrate, triaminoguanidine nitrate, and nitroguanidine group. 
   
   
       3 . The gas generant compositions as claimed in  claim 1 , wherein the hydrogen containing tetrazole or salts thereof is selected from the group consisting of 5-nitrotetrazole, 5-aminotetrazole, and potassium salts of 5-aminotetrazole. 
   
   
       4 . The gas generant compositions as claimed in  claim 1 , wherein the nitrate oxidizing agent is alkaline metal nitrate or alkaline earth metal nitrate. 
   
   
       5 . The gas generant compositions as claimed in  claim 4 , wherein the alkaline metal nitrate or alkaline earth metal nitrate is selected from the group consisting of lithium nitrate, sodium nitrate, potassium nitrate, magnesium nitrate, calcium nitrate, and strontium nitrate. 
   
   
       6 . The gas generant compositions as claimed in  claim 1 , wherein the perchlorate oxidizing agent is alkaline metal perchlorate or ammonium perchlorate. 
   
   
       7 . The gas generant compositions as claimed in  claim 6 , wherein the alkaline metal perchlorate or ammonium perchlorate is selected from the group consisting of lithium perchlorate, sodium perchlorate, potassium perchlorate, and ammonium perchlorate. 
   
   
       8 . The gas generant compositions as claimed in  claim 1 , wherein the polymer adhesive is selected from the group consisting of cellulose derivatives, starch and vinyl alcohol acetate resin. 
   
   
       9 . The gas generant compositions as claimed in  claim 1 , wherein the residue aggregation agent is silicon dioxide. 
   
   
       10 . The gas generant compositions as claimed in  claim 1 , wherein particle diameter of the nitrogen containing guanidines ranges from 3 to 10 μm. 
   
   
       11 . The gas generant compositions as claimed in  claim 1 , wherein particle diameter of the hydrogen containing tetrazole or salts thereof ranges from 5 to 20 μm. 
   
   
       12 . The gas generant compositions as claimed in  claim 1 , wherein particle diameter of the nitrate oxidizing agent ranges from 10 to 30 μm. 
   
   
       13 . The gas generant compositions as claimed in  claim 1 , wherein particle diameter of the perchlorate oxidizing agent ranges from 5 to 20 μm. 
   
   
       14 . The gas generant compositions as claimed in  claim 1 , wherein particle diameter of the residue aggregating agent ranges from 7 to 20 nm.