초록 ▼

A plasticizer-free propellant for inflating passenger airbags in vehicles mprising from about 78 to about 90 weight percent of cyclotrimethylenetrinitramine (RDX) and from about 10 to about 22 weight percent of a plasticizer-free polymer binder formed by curing a mixture of a polyoctenamer and a pol

A plasticizer-free propellant for inflating passenger airbags in vehicles mprising from about 78 to about 90 weight percent of cyclotrimethylenetrinitramine (RDX) and from about 10 to about 22 weight percent of a plasticizer-free polymer binder formed by curing a mixture of a polyoctenamer and a polymer comprising an acrylate polymer or a methacrylate polymer having a glass transition temperature of -30.degree. C. or lower and 0.01 to 5 weight percent based on the total amount of the monomers, of a crosslinking monomer having two or more double bonds of substantially the same reactivity in the molecule or one double bond and a crosslinking functional group such as an epoxide ring, a hydroxyl group, or a carbonyl group. This propellant is useful in hybrid inflators for air/safety bags in vehicles.

대표청구항 ▼

[ What is claimed is:] [22.] A plasticizer-free propellant composition comprising:A. from 78 to 90 weight percent cyclotrimethylenetrinitramine (RDX); andB. from 10 to 22 weight percent of a plasticizer-free polymer binder formed by curing a mixture of(1) from about 3 to about 6 weight percent of an

[ What is claimed is:] [22.] A plasticizer-free propellant composition comprising:A. from 78 to 90 weight percent cyclotrimethylenetrinitramine (RDX); andB. from 10 to 22 weight percent of a plasticizer-free polymer binder formed by curing a mixture of(1) from about 3 to about 6 weight percent of an polyoctenamer, and(2) from about 94 to about 97 weight percent of an acrylate polymer formed by polymerizing a noncrosslinking monomer of the formula C(R.sub.1)H.dbd.CHC(O)OR.sub.2 when R.sub.1 is hydrogen, methyl, or mixtures thereof and R.sub.2 is an alkyl group of from 2 to 8 carbon atoms or a mixture of alkyl groups of from 2 to 8 carbon atoms with a crosslinking monomer having two or more double bonds of substantially the same reactivity in the molecule or one double bond and a crosslinking functional group such as an epoxide ring, a hydroxyl group, or a carboxyl group, wherein the crosslinking monomer comprises from 0.01 to 5 weight percent of the monomers with the noncrosslinking monomer comprising the remainder, and wherein the acrylate polymer has a glass transition temperature of -30.degree. C. or lower.