JPH06306378A - Composition for smoke pot - Google Patents

Abstract

PURPOSE:To provide the title composition containing commonly used potassium perchlorate as the oxidizing agent and markedly reduced in the production of smoke. CONSTITUTION:The composition comprising an oxygen supply, a colorant and a flammable agent/binder, wherein at least 95wt.% of the potassium perchlorate used as the oxygen supply has a particle size of 45mum or below. When this composition contains the potassium perchlorate in an amount equal to that contained in an existing product, it can provide a signal effect of higher brightness. Further, when their brightnesses are the same, the amount of the potassium perchlorate used in this composition can be reduced to nearly one half of that of the existing product to markedly reduce the amount of the produced smoke.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flaming cylinder drug (hereinafter abbreviated as drug). In particular, the present invention relates to a drug in which the amount of smoke is reduced by specifying potassium perchlorate, which is mixed as an oxygen supply agent, to have a small particle size.

[0002]

2. Description of the Related Art Generally, as a drug, perchlorate or the like is used as an oxygen supplier, strontium salt or the like is used as a coloring agent, sulfur or wood powder is used as a combustible agent, and a combustible agent is also combined. Heavy oil, vegetable oil, etc. have been blended with the agent. Increasing luminous intensity and reducing smoke emission have been attempted by examining combustible agents. In Japanese Examined Patent Publication (Kokoku) No. 49-19854, the amount of smoke generated is reduced by adding polybutene.
In Japanese Patent No. 54391, the amount of smoke is reduced and the luminous intensity is increased by adding an aliphatic diacid ester.

In both of the above, potassium perchlorate is blended as an oxygen supply agent. At present, other oxygen supply agents are known in addition to potassium perchlorate, but when mixed with color formers and combustible agents as ingredients, safety, storage stability, light intensity as a signal effect, burning time, etc. are considered. Then, it does not reach the performance of potassium perchlorate.

However, as long as potassium perchlorate is used as the oxygen supply agent, it is not possible to suppress the production of potassium chloride, which is one of the main causes of smoke during combustion, and the amount of smoke generated by potassium perchlorate is reduced. In order to lower the amount, it seems that there is no solution other than reducing the amount of potassium perchlorate contained.

In a flaming cylinder using potassium perchlorate as an oxidant, a cylindrical container such as a paper cylinder is filled with a raw material, which is used to handle accidents on a national highway, an exclusive road for a highway, an emergency signal for railways, etc. It is used as an emergency flare cylinder.

However, in many cases, the visibility of the signal is significantly deteriorated due to the smoke generated when the flaming cylinder used for the signal at night or in the tunnel is fired. Therefore, there is a demand for a flaming cylinder with a further reduced amount of smoke.

[0007]

SUMMARY OF THE INVENTION The object of the present invention is to solve such a problem, to use potassium perchlorate which is generally used as an oxidant for foods, and to greatly reduce the amount of smoke emitted. It is to provide the drug that was made.

[0008]

Means for Solving the Problems As a result of intensive studies, the present inventors have completed the present invention by solving the above problems.

That is, according to the present invention, 95% by weight or more of potassium perchlorate used as an oxygen supplier is contained in a drug consisting of an oxygen supplier, a color former and a binder which also serves as a combustible agent.
The drug has a particle size of 45 μm or less.

Here, the particle size of 45 μm or less means that the particles have passed through a sieve having an opening of 45 μm as shown in Japanese Industrial Standard Z8801.

According to the present invention, if the amount of potassium perchlorate is the same, a higher luminous intensity can be realized, and if it is the same, the amount of potassium perchlorate can be reduced.
In addition, a drug with a significantly reduced amount of smoke can be obtained.

[0012]

The present invention will be described in detail below with reference to examples. In addition, "%" in an Example represents "weight%."

Example 1 Potassium perchlorate (particle size: 45 μm or less is 95 as an oxidizing agent
%, 45-63μm 5%) 10%, strontium nitrate 65% as a coloring agent, sulfur 10% as a flammable agent, wood flour and paraffin 10%, castor oil and heavy oil 5% as a binder. A blended drug was prepared. Table 1 shows the blending ratio of the drugs
Shown in.

The prepared medicine is placed in a paper cylinder (inner diameter 30 mm x length 20 c
m) was filled into a flaming cylinder, and a combustion test was conducted. Table 1 shows the test results of the smoke emission status obtained by visually observing the light intensity, the combustion time, and the smoke emission status at the time of combustion.

Example 2 In Example 1, 10% to 5% of potassium perchlorate was added,
A drug substance was prepared in the same manner as in Example 1 except that strontium nitrate was changed from 65% to 70%. Hereinafter, in the same manner as in Example 1, a flaming cylinder was prepared and a combustion test was conducted. Table 1 shows the compounding ratio of the drug and the test results.

Comparative Example 1 In Example 1, potassium perchlorate (particle size: 45% or less: 95%, 45 to 63 μm: 5%) was replaced by potassium perchlorate (particle size: 45 μm or less: 60%, 45 to 63 μm). 37%, 63 μm
A drug was prepared in the same manner as in Example 1 except that the above was 3%). Hereinafter, in the same manner as in Example 1, a flaming cylinder was prepared and a combustion test was conducted. Table 1 shows the compounding ratio of the drug and the test results.

The particle size and amount of potassium perchlorate in Comparative Example 1 are the same as those of the current product.

[0018]

[Table 1]

[0019]

According to the present invention, when potassium perchlorate is mixed in the same amount as the current product, a higher luminous intensity signal effect can be obtained. Also, if the brightness is the same, the compounding amount of potassium perchlorate can be reduced to about half that of the current product, and the amount of smoke generation can be greatly reduced.

Claims (1)

[Claims] 1. In a flaming cylinder drug comprising an oxygen supply agent, a color former, a combustible agent and a binder, 95% by weight or more of potassium perchlorate used as the oxygen supply agent has a particle size of 45 μm.
A medicine for a flare tube characterized by being: