Gas generant composition and molded article thereof, and gas generator using the molded article

Abstract

The present invention relates to a gas generant composition that has a high ignitability and combustibility and is capable of quickly responding to an electrical signal for starting combustion, and particularly to a gas generant composition comprising a nitrogen-containing organic compound as a fuel component (A), a metal nitrate and/or a basic metal nitrate (B-1) and a perchlorate (B-2) having a 50 percent particle diameter from 1 to 50 μm as an oxidant component (B), the content of the perchlorate (B-2) in the total mass of the oxidant component (B) is 5 mass percent or more and less than 35 mass percent.

1 . A gas generant composition comprising a nitrogen-containing organic compound as a fuel component (A), a metal nitrate and/or a basic metal nitrate (B-1) and perchlorate (B-2) having a 50 percent particle diameter from 1 to 50 μm as an oxidant component (B), wherein a content of the perchlorate (B-2) in a total mass of the oxidant component (B) is 5 mass percent or more and less than 35 mass percent. 
     
     
         2 . The gas generant composition according to  claim 1 , wherein the nitrogen-containing organic compound is at least one kind selected from a group consisting of guanidine, triazole, tetrazole, bitriazole, bitetrazole and a derivative thereof. 
     
     
         3 . The gas generant composition according to  claim 1 , wherein the metal nitrate and/or the basic metal nitrate (B-1) is at least one kind selected from a group consisting of potassium nitrate, sodium nitrate, strontium nitrate and basic copper nitrate. 
     
     
         4 . The gas generant composition according to  claim 1 , wherein the perchlorate (B-2) is at least one kind selected from a group consisting of potassium perchlorate, sodium perchlorate and ammonium perchlorate. 
     
     
         5 . The gas generant composition according to  claim 1 , wherein a content of the nitrogen-containing organic compound is from 35 to 60 mass percent, a content of the metal nitrate and/or basic metal nitrate (B-1) is from 20 to 50 mass percent and a content of the perchlorate (B-2) is from 1 to 20 mass percent. 
     
     
         6 . The gas generant composition according to  claim 5 , wherein the nitrogen-containing organic compound is guanidine nitrate, the metal nitrate and/or basic metal nitrate (B-1) is basic copper metal nitrate and the perchlorate (B-2) is potassium perchlorate. 
     
     
         7 . The gas generant composition according to  claim 1 , wherein the perchlorate (B-2) has a 50 percent particle diameter of 1 to 30 μm. 
     
     
         8 . The gas generant composition according to  claim 1 , wherein a binder (C) is further contained. 
     
     
         9 . The gas generant composition according to  claim 1 , wherein a slag former (D) is further contained. 
     
     
         10 . A molded article of the gas generant composition according to  claim 1 . 
     
     
         11 . The molded article of the gas generant composition according to  claim 10 , wherein a shape of the molded article is a columnar shape and a diameter thereof is 4 mm or less. 
     
     
         12 . A gas generator comprising the molded article of the gas generant composition according to  claim 10 . 
     
     
         13 . The gas generator according to  claim 12 , comprising a long cylindrical housing. 
     
     
         14 . The gas generant composition according to  claim 2 , wherein the metal nitrate and/or the basic metal nitrate (B-1) is at least one kind selected from a group consisting of potassium nitrate, sodium nitrate, strontium nitrate and basic copper nitrate. 
     
     
         15 . A gas generator comprising the molded article of the gas generant composition according to  claim 11 .