JPH039958B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a smoke reducing agent composition, and more particularly to a smoke reducing agent composition for combustible materials that can reduce smoke generation as much as possible when synthetic resins, fuel oil, etc. are combusted. Conventionally, bis(cyclopentadienyl)iron (generally referred to as ferrocene) has been widely used as a smoke reducing agent. However, since ferrocene is a crystalline solid with sublimation properties, it has disadvantages such as poor dispersibility when blended into synthetic resins and sublimation and volatilization over time. In order to improve this drawback, it has been proposed to use a liquid ferrocene derivative such as n-butylferrocene in place of ferrocene alone. Although the dispersibility of this derivative is improved, the sublimation property remains unchanged, and the problem of volatilization remains unsolved. In addition, products in which ferrocene is reacted with liquid polybutadiene have been proposed, but the smoke reduction effect has not been sufficient. Therefore, the present inventors solved these drawbacks and
As a result of intensive studies to develop a smoke reducing agent composition that has an excellent smoke reducing effect, has good dispersibility in synthetic resins, etc., and does not sublimate or volatilize, we have found that the above objective can be achieved by blending a specific compound with ferrocene. We have discovered that this can be achieved, and based on this knowledge, we have completed the present invention. That is, the present invention is a smoke reducing agent composition comprising bis(cyclopentadienyl) iron () and a liquid aliphatic hydrocarbon consisting essentially of components having a molecular weight of 140 or more. Bis(cyclopentadienyl)iron ( ) used in the present invention is a compound generally referred to as ferrocene, and is an organic iron compound having a structure in which an iron atom ( ) is inserted between two cyclopentadiene rings. be. However, since this ferrocene is sublimable, the present invention attempts to eliminate this drawback by blending it with the following compounds. Next, liquid aliphatic hydrocarbons consisting essentially of components with a molecular weight of 140 or more are those that have a molecular weight of 140 or more, although a small amount of components with a molecular weight of less than 140 may be included.
140 or more liquid aliphatic hydrocarbons.
By blending this component, the sublimation properties of ferrocene can be improved without reducing the smoke reduction effect of ferrocene. There is no particular upper limit to the molecular weight, but since it is liquid, a molecular weight of about 140 to 2,500 is usually suitably used. Specifically, examples thereof include isobutene oligomers having a number average molecular weight of about 140 to 2,500, dodecane, tridecane, polybutene, or mixtures thereof. In particular, isobutene oligomers are preferable because they depolymerize due to heat and produce extremely clean exhaust gas. In the present invention, ferrocene and substantially molecular weight
There are no particular restrictions on the amount of liquid aliphatic hydrocarbons containing 140 or more components, and they can be blended in various ratios. Usually, the ratio of ferrocene/liquid aliphatic hydrocarbon (weight ratio) is 0.01 to 500.
In particular, it is widely used as a combustible substance in the composition of the present invention, but the suitable blending ratio varies depending on the target substance.
For example, when used in synthetic resins, ferrocene/liquid aliphatic hydrocarbon (weight ratio) = 0.01 to 500, preferably 0.1 to 100; when used in fuel oil, etc., ferrocene/liquid aliphatic hydrocarbon (weight ratio) )=
0.01-250, preferably 0.05-100. The reason for this is that it is preferable to form a viscous composition when blended into a synthetic resin or the like, and it is preferable to form a non-viscous composition when added to fuel oil. The smoke reducing agent composition of the present invention is obtained by blending the above two components. The smoke reducing agent composition thus obtained can be used for various combustible substances, such as synthetic resins and fuel oils such as kerosene and light oil. The composition of the present invention may be added in an amount of 1 to 1000 ppm to the above-mentioned combustible substances, and as a result, the amount of smoke generated during combustion of the combustible substances can be reduced. Further, when blended with a combustible substance such as a synthetic resin, the composition of the present invention has good dispersibility and does not sublimate and volatilize, so that the smoke reduction effect is maintained. As described above, the smoke reducing agent composition of the present invention can be effectively used for combustible substances, especially synthetic resins, fuel oils, etc. that generate harmful smoke. Next, the present invention will be explained in detail with reference to Examples. Examples 1 to 3 Each component shown in Table 1 was blended in a predetermined amount to obtain a smoke reducing agent composition. The obtained composition was added to the combustible substances shown in Table 1 to a predetermined concentration, and the smoke reduction effect was measured. The results are shown in Table 1. Comparative Example 1 A composition was obtained by blending a predetermined amount of tetraethylbenzene with ferrocene. The smoke reduction effect of this composition was measured in the same manner as in Example 1. The results are shown in Table 1. Comparative Example 2 A composition was obtained by blending xylene in a predetermined amount with ferrocene. The smoke reduction effect of this composition was measured in the same manner as in Example 3. The results are shown in Table 1. Since xylene has a low vapor pressure, it evaporates during kneading into the resin.
Therefore, the dispersion of ferrocene was insufficient. Comparative Example 3 The smoke reduction effect was measured in the same manner as in Example 3 except that n-butylferrocene was used as the smoke reduction agent.
The results are shown in Table 1. 2-Butylferrocene was volatile, and a sufficient smoke reduction effect could not be obtained.

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Claims (1)

[Scope of Claims] 1. A smoke reducing agent composition comprising bis(cyclopentadienyl) iron () and a liquid aliphatic hydrocarbon consisting essentially of a component having a molecular weight of 140 or more. 2. The composition according to claim 1, wherein the liquid aliphatic hydrocarbon consisting essentially of components having a molecular weight of 140 or more is isobutene oligomer, dodecane, tridecane, or polybutene. 3 The blending ratio of liquid aliphatic hydrocarbon consisting of bis(cyclopentadienyl) iron () and components with a molecular weight of 140 or more is bis(cyclopentadienyl) iron ()/components with a molecular weight of 140 or more The composition according to claim 1, wherein the liquid aliphatic hydrocarbon consists of 0.1 to 500 (weight ratio).