Gas generants

A technology of gas generating agent and oxidizing agent, which is applied in the generation of compressed gas, non-explosive/non-thermal agent components, explosives, etc., and can solve the problems of high cost of tetrazole and expensive compounds

Inactive Publication Date: 2006-04-19
AUTOLIV ASP INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although such incorporation of diammonium tetrazolium transition metal complexes can desirably increase the burning rate of the formulation, these compounds are relatively expensive due to the higher cost of the bis tetrazolium portion

Method used

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  • Gas generants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Embodiment 1 prepares ethylenediamine 5,5'-tetrazolium copper (laboratory scale)

[0062] Bitetrazole dihydrate (50.95 g) was partially dissolved in a beaker containing 200 ml of water. Basic copper carbonate (32.75 g) was added and the temperature of the slurry was equilibrated at 190°F (88°C) and maintained at that temperature until the reaction was complete (approximately 1 hour). Ethylenediamine (35.55 g) was then gradually added to the beaker, immediately forming a complex (100 g).

Embodiment 2

[0063] Embodiment 2 prepares ethylenediamine 5,5'-tetrazolium copper (10 pounds)

[0064]A 10 lb sample of copper ethylenediamine 5,5'-bistetrazole was prepared by filling a spray drying mixing tank with water (9080 ml) and then adding bistetrazole dihydrate (2313.4 g) to partially dissolve it then add basic copper carbonate (1486.85 g) to the spray drying mixing tank, equilibrate the temperature of the slurry at 190°F (88°C), and maintain this temperature until the reaction is complete (approximately 1 hour); then add to the spray drying mixing tank Ethylenediamine was gradually added to form a complex immediately.

Embodiment 3 and comparative example 1、2

[0066] Preparation with basic copper nitrate as oxidant comprises guanidine nitrate and diamine 5,5'-copper tetrazolium as co-fuel (embodiment 3); only comprises guanidine nitrate as fuel (comparative example 1); comprises guanidine nitrate and di( Ethylenediamine) 5,5'-bitetrazolium copper as the gas generant composition of the co-fuel (Comparative Example 2), as shown in Table 2 below. The values ​​in Table 2 all refer to the weight percentage relative to the composition.

[0067] Element

Example 3

Comparative example 1

Comparative example 2

Basic copper nitrate

60.34

47.33

51.05

Guanidine nitrate

28.16

51.17

37.45

Aluminum oxide

1.50

1.50

1.50

Bis(ethylenediamine) 5,5'

-copper tetrazolium

10.00

-

-

Diazepam 5,5'-dinitrogen

Copper azole

-

-

10.00

[0068] Then, the gas generant compositions in Example 3 an...

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Abstract

Gas generant compositions which include at least one transition metal complex of ethylenediamine 5,5'-bitetrazole and gas generant compositions which include a fuel material of cobalt III nitrate complex with ammonia or water ligands, a burn rate catalyst of copper bis ethylenediamine dinitrate, and an oxidizer of basic copper nitrate are provided to produce or results in compositions having relatively high burn rates. Also provided are corresponding or associated gas generating devices and inflatable vehicle occupant safety restraint systems and methods of gas generation.

Description

field of invention [0001] The present invention relates generally to gas generant materials, such as are used to inflate automotive inflatable restraint air bag cushions. More specifically, how to increase the rate at which such materials burn or otherwise react. Background of the invention [0002] Gas generants or generant materials can be used in many different fields. An important use of such compositions is the restraint of occupants while driving. For example, it is known to protect vehicle occupants with cushions or airbags, such as "airbag cushions". When a vehicle suddenly slows down, such as in a crash, the gas inflates or expands the bumper or air bag. In such systems, the airbag cushion is typically placed in a deflated and folded state to minimize space requirements. Such systems typically also include one or more crash sensors mounted on the frame or body to detect sudden deceleration of the vehicle and trigger activation of the system via electronic contro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06D5/06C06B23/00C06B31/00
CPCC06B31/00C06D5/06
Inventor I·V·门登霍尔R·D·泰勒
Owner AUTOLIV ASP INC
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