Patent ID: 7833365

Claim:
A gas generating composition comprising: a guanidine compound as the fuel; a basic metal nitrate as the oxidizing agent; at least one cellulose-type binder selected from the group consisting of carboxymethyl cellulose, carboxymethyl cellulose sodium salt, carboxymethyl cellulose potassium salt, carboxymethyl cellulose ammonium salt, cellulose acetate, cellulose acetate butyrate, methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, ethyhydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethylethyl cellulose and microcrystalline cellulose; and a light rare earth compound selected from the group consisting of a combination of La(OH) 3 and La(NO 3 ) 3 and a combination of La(OH) 3 and Cu, wherein the content of the rare earth compound in the composition is 0.1 to 20 mass %; and wherein the mean particle size of the light rare earth compound is within a range of 0.5 to 500 μm.