Patent ID: 6177028
Filing Date: 2001-01-23
Classification: C06B,C06C,C06D,Y10S

Abstract:
A spontaneous firing explosive composition for use in a gas generator for an air bag, comprising:a fuel, an oxidizer, a combustion modifier and 2-30% by weight of a binder, whereinsaid binder has 30 .mu.m or less of a 50% average particle diameter of a reference number and the above agents are mixed, andsaid fuel is at least one nitrogen atom-containing organic compound selected from the group consisting of azodicarbonamide, carbohydrazide, dicyandiamide, aminotetrazole, aminoguanidine, triaminoguanidine nitrate, nitroguanidine, triazole, tetrazole, azobitetrazole, bitetrazole, and salts thereof,said oxidizer contains at least 50% by weight of potassium nitrate,said combustion modifier is selected from the following groups (1)-(3):(1) at least one member selected from the group consisting of zirconium, hafnium, molybdenum, tungsten, manganese, nickel, iron and oxides and sulfides of those members,(2) at least one member selected from the group consisting of carbon and phosphorus, and(3) a mixture of the above members (1) and (2),said binder, which binds said fuel, oxidizer and combustion modifier, is at least one member selected from the following groups i)-iv):i) hydrotalcite-type compound having the formula:[M.sup.2+.sub.1-x M.sup.3+.sub.x (OH).sub.2 ].sup.x+ [A.sup.n-.sub.x/n.multidot.mH.sub.2 O].sup.x-whereM.sup.2+ is a bivalent metal selected from the group consisting of Mg.sup.2+, Mn.sup.2+, Fe.sup.2+, Co.sup.2+, Ni.sup.2+, Cu.sup.2+ and Zn.sup.2+ ;M.sup.3+ is a trivalent metal selected from the group consisting of Al.sup.3+, Fe.sup.3+, Cr.sup.3+, Co.sup.3+, and In.sup.3+ ;A.sup.n- is an n-valence anion selected from the group consisting of OH.sup.-, F.sup.-, Cl.sup.-, Br.sup.-, NO.sub.3.sup.-, CO.sub.3.sup.2-, SO.sub.4.sup.2-, Fe(CN).sub.b.sup.3-, CH.sub.3 COO.sup.-, oxalate ion and salicylate ion; andx: 0<x.ltoreq.0.33,ii) Acid clay or activated clayiii) Natural zeolite or artificial zeoliteiv) A mixture of two or more members selected from the group consisting of the preceding groups i)-iii).