Gas generator compositions

• US 5,656,793 A
• Filed: 01/16/1996
• Issued: 08/12/1997
• Est. Priority Date: 05/09/1994
• Status: Expired due to Fees

• Current Assignee: EIWA Chemical IND Company Limited, NOF Corporation
• Original Assignee: EIWA Chemical IND Company Limited
• Inventors: Harada, Kenji, Ochi, Koji, Sakumoto, Keiji, Asano, Nobukazu
• Primary Examiner(s): Skane, Christine
• Assistant Examiner(s): Hardee, John R.
• Application Number:
  US08/586,407
• Time in Patent Office: 574 Days
• Field of Search: 149/19.1, 149/22, 149/36, 149/37, 149/42, 149/43, 149/61, 149/77, 149/108.2, 149/75
• US Class Current: 149/22
• CPC Class Codes: C06D 5/06 by reaction of two or more solids

Abstract

A gas generator contains hydrazodicarbonamide serving as a reducing agent, oxoacid salt serving as an oxidizing agent, and a combustion controller which is catalytic or combustible. As a combustible combustion controller, boron, and zirconium are preferred. The gas generator includes a flame coolant containing at least one compound selected from the group consisting of hydrates of metal sulfates, hydrates of metal nitrates, hydrates of metal carbonates, metal hydroxides, and hydrates of metal hydroxides in which the metal moieties are selected from the III, IV, V, and VI Period metal of the Periodic Table. As a flame coolant, magnesium hydroxide is preferred.

Claims

1. A gas generator composition comprising:

hydrazodicarbonamide serving as a reducing agent for generating a gas when oxidized, said hydrazodicarbonamide ranging from 10 to 45% by weight;

oxoacid salt serving as an oxdizing agent for oxidizing the reducing agent, said oxoacid salt ranging from 90 to 55% by weight;

a combustion controller with catalytic function, said controller including at least one compound selected from the group consisting of titanium oxide (TiO₂), copper oxide (CuO), zinc oxide (ZnO), manganese dioxide (MnO₂), iron chloride (FeCl₃) and manganese sulfate (MnSO₄);

said combustion controller ranging from 0.1 to 5% by weight and

said combustion controller containing at least one element selected from the group consisting of boron, aluminum and zirconium.

2. A gas generator composition comprising:

hydrazodicarbonamide serving as a reducing agent for generating a gas when oxidized;

said hydrazodicarbonamide ranging from 10 to 45% by weight,

oxoacid salt serving an oxidizing agent for oxidizing the reducing agent,

said oxoacid salt ranging from 90 to 55% by weight,

a combustible combustion controller containing at least one element selected from the group consisting of boron, aluminum and zirconium; and

said combustible combustion controller ranging from 0.1 to 5% by weight.

3. The gas generator composition as set forth in claim 2, further including a combustion controller with catalytic function, said controller including at least one compound selected from the group consisting of titanium oxide (TiO₂), copper oxide (CuO), zinc oxide (ZnO), manganese dioxide (MnO₂), iron chloride (FeCl₃), and manganese sulfate (MnSO₄).

4. A gas generator composition comprising:

hydrazodicarbonamide serving as a reducing agent for generating a gas when oxidized, said hydrazodicarbonamide ranging from 10 to 42% by weight;

oxoacid salt serving as an oxidizing agent for oxidizing the reducing agent, said oxoacid salt ranging from 87 to 55% by weight;

a flame coolant containing at least one compound selected from the group consisting of hydrates of metal sulfates, hydrates of metal nitrates, metal carbonates, hydrates of metal carbonates, metal hydroxides and hydrates of metal hydroxides, in which the metal moiety is selected from the III, IV, V and VI Period metals of the Periodic Table, said time coolant ranging from 3 to 35% by weight;

a combustion controller with catalytic function containing at least one compound selected from the group consisting of titanium oxide (TiO₂), copper oxide (CuO), zinc oxide (ZnO), manganese dioxide (MnO₂), iron chloride (FeCl₃) and manganese sulfate (MnSO₄);

a combustible combustion controller containing at least one element selected from the group consisting of boron aluminum and zirconium; and

said combustion controller ranging from 0.1 to 5% by weight.

5. The gas generator composition as set forth in claim 4, wherein said flame coolant contains an element of metal selected from the group consisting of aluminum (Al), copper (Cu), iron (Fe), manganese (Mu), magnesium (Mg), nickel (Ni), tin (Sn) and zinc (Zn).

6. The gas generator composition as set forth in claim 5, wherein said flame coolant contains hydroxide of said metal or hydrate of hydroxide of said metal.

7. The gas generator composition as set forth in claim 6, wherein the total content of said combustion controller with catalytic function and said combustible combustion controller is in the ranges from 0.1 to 5% by weight.

8. The gas generator composition as set forth in claim 7, wherein the combustion temperature of the gas generator composition is in the range of 1300°

to 1500°

C.

9. The gas generator composition as set forth in claim 8, wherein the volume of gas generated by the combustion of said gas generator composition is in the range from 0.4 to 0.55 litters per gram.

10. A gas generator composition comprising:

hydrazodicarbonamide serving as a reducing agent for generating a gas when oxidized,

said hydrazodicarbonamide ranging from 10 to 42% by weight;

oxoacid salt serving as an oxidizing agent for oxidizing the reducing agent, said oxoacid salt ranging from 87 to 55% by weight;

a flame coolant containing at least one compound selected from the group consisting of hydrates of metal sulfates, hydrates of metal nitrates, metal carbonates, hydrates of metal carbonates, metal hydroxides and hydrates of metal hydroxides, in which the metal moiety is selected from the III, IV, V and VI Period metals of the Periodic Table, said flame coolant ranging from 3 to 35% by weight;

a combustible combustion controller containing at least one element selected from the group consisting of boron, aluminum and zirconium; and

said combustible combustion controller ranging from 0.1 to 5% by weight.