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Substituted basic metal nitrates in gas generation

一种金属硝酸盐、气体发生的技术，应用在碱式金属硝酸盐化合物的材料,气体发生组合物,安全气囊领域，能够解决增加原料成本、增加生产烟火组合物成本、增加方法步骤等问题

Inactive Publication Date: 2007-10-10
AUTOLIV ASP INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of these materials increases the cost of producing the pyrotechnic composition, which increases the cost of raw materials and increases the number of process steps

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0038] In 50 milliliters (ml) of hot water, dissolve 2.24 grams (g) of 5-aminotetrazole (enough to replace the four hydroxyl groups of basic copper nitrate), and prepare the substituted 5-aminotetrazole by representative substitution reaction (1). basic copper nitrate. 3.20 g of basic copper nitrate was slowly added to the 5-aminotetrazole solution. Basic copper nitrate reacts with 5-aminotetrazole for about 5-10 minutes to form a water-insoluble green precipitate. The precipitate was collected and washed with copious amounts of water to remove the free 5-aminotetrazole present. The washed precipitate was dried at 80°C for about 2 hours, and subjected to chemical analysis and thermal analysis. The experimental yield of the dry precipitate was 3.81 g. Assuming substitution of two hydroxyl groups, the theoretical yield is 4.91 g. The results of the chemical analysis are shown in Table 1 below.

[0039] analyze

theoretical value

Experimental value

%c...

Embodiment 5-9

[0044] * ATbCN = basic copper nitrate substituted by 5-aminotetrazole

[0045] As shown in Table 2, the 5-aminotetrazole substituted basic copper nitrate was an effective burning rate enhancer. The data show that increasing the 5-aminotetrazole substituted basic copper nitrate in the mixture increases the burning rate of the mixture. The burn rate in this experiment was of a magnitude that would allow the processing of the gas generating composition into nubs or flakes as fewer thicker nubs or flakes would provide equivalent performance to gas generants without the unsubstituted basic metal nitrate cost reduction. In addition, the particle size limitations mentioned above can be overcome by using thicker nuggets or flakes which provide equivalent or enhanced burn rates.

[0046] It should be understood that theoretical discussions such as the discussion of the substitution reaction of acidic organic compounds with basic metal nitrates are here to aid in the understan...

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PUM

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Abstract

A material for a pyrotechnic composition and related pyrotechnic compositions are provided in which the material includes a substituted basic metal nitrate including a reaction product of an acidic organic compound and a basic metal nitrate. A method for enhancing a burn rate of a gas generant composition and a burn rate enhanced gas generant composition including a reaction product of basic metal nitrate and tetrazoles, tetrazole derivatives, and combinations thereof, and a nitrogen-containing co-fuel such as guanidine nitrate are also disclosed. The burn rate enhance gas generant composition may optionally include an additional oxidizer such as basic copper nitrate.

Description

Background of the invention [0001] The present invention generally relates to a material for gas generation, such as forming inflation gas for inflating an inflatable device such as an airbag contained in an inflatable passenger restraint system of an automobile. In particular, the present invention relates to a substituted basic metal nitrate compound-containing material comprising a reaction product of an acidic organic compound and a basic metal nitrate. [0002] It is well known to protect occupants using air cushions or airbags such as "airbags" that inflate, ie inflate, when a vehicle experiences sudden deceleration, such as in a crash. This airbag restraint system generally includes: one or more safety air cushions, which are packaged to minimize space requirements in the uninflated and folded condition; one or more crash sensors mounted on the frame or body of the vehicle to monitor sudden deceleration; an activation system initiated electronically by crash sensors; a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B31/00C06B47/08C06D5/06
CPCC06B31/00C06D5/06
Inventor I·V·门登霍尔R·D·泰勒
Owner AUTOLIV ASP INC
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