JP2001354861A - Plastic molding compound and plastic molded product made by using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a plastic molding compound with high combustion efficiency and markedly slight discoloration. SOLUTION: This plastic molding compound is obtained by incorporating a plastic with an organic acid iron salt such as iron behenate at 0.01-1.0 wt.% calculated as iron content. Thus, dioxin emission from this plastic molding compound and plastic molded products made therefrom can effectively be prevented; since the burnable temperature of the above molding compound or molded products therefrom is much lower than the temperature having been required as the temperature for decomposing dioxins, this molding compound or the plastic molded products therefrom can be incinerated through suppressing formation of dioxins even with existing (small-sized) incinerators under no control of high combustion temperatures; furthermore, since this plastic molding compound is slight in discoloration due to the color of the iron molecule itself and therefore suitable for coloration by dye incorporation, the plastic molded products made therefrom can meet aesthetic demands.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic molding material provided with excellent flammability and a plastic molded product using the material.

[0002]

2. Description of the Related Art In recent years, due to changes in lifestyle, improvement in living standards and income levels, new products have overflowed, and a rich material culture has been formed. The amount of waste is also increasing rapidly, and the problem of garbage disposal has become a major social problem. Among these refuse treatments, combustible garbage is packed in plastic bags represented by polyethylene resin with various pigments added or not added into plastic bags, which are incinerated in an incinerator and residual ash after incineration. The remaining unburned waste is landfilled.

[0003] However, incineration of combustible waste has the following problems. That is, the problem of dioxin generation during combustion, air pollution by carbon monoxide and NOx, shortage of landfills to dispose of large amounts of residual ash and incineration after incineration, and harmful components in residual ash Leakage from landfills, or if combustible garbage contains a large amount of plastic waste, plastic garbage bags, or plastic containers with high calorie burns, it may cause an increase in the temperature inside the incinerator. And the incinerator was destroyed.

The annual emission of dioxins in Japan is estimated to be about 5100 to 5300 g TEQ,
Of these, emissions from the combustion process account for over 95%. Although the details of the mechanism of dioxin formation during the incineration process have not been clarified, the point that has become clear at this time is that if the temperature in the incinerator is increased and combustion is improved, it will not decompose. ing. In that case, the desirable temperature is 930 ° C. or higher. Unburned hydrocarbons and chlorides undergo a catalytic reaction by heavy metals in the dust to produce dioxins. The formation temperature range is 200 to 4 with the peak at 300 ° C.
It is in the range of 00 ° C. It is said to be generated by decomposition and synthesis of precursors such as unburned chlorophenol and chlorobenzene.

[0005] In particular, the problem of dioxin generation has been classified as an emergency measure and a permanent measure in the new guidelines of the Environment Agency as measures to reduce dioxins, and the emission concentration is specified for existing furnaces and new furnaces. As an emergency measure, the tolerable daily intake of dioxins into the human body should be 10 picograms per kilogram of body weight per day (0.6 kg for a body weight of 60 kg).
Based on this calculation, the emission concentration regulation from the chimney is set to 80 nanograms per cubic meter based on a calculation assuming that dioxins are diluted 200,000 times when reaching the ground from the chimney. As a permanent measure, continuous operation is being promoted as a study of expanding the scale of incineration facilities and operating methods.

[0006] Measures to prevent the generation of dioxins include: Improves combustion and reduces unburned components. (Complete combustion, reduction of unburned carbon monoxide and carbon monoxide)-Somewhat high combustion temperature (850-9)
30 ° C) (decomposition) ・ Residence time (2 to 3 seconds at 850 ° C) (decomposition) ・ Better mixing of combustion gas and air (complete combustion) Reduce the amount of dust. (Suppresses the catalytic action of dioxin formation) The residence time in the production temperature range (200 to 400 ° C.) is shortened. (Reduction of unburned chlorides) From the viewpoint of operation management, studies have been made to improve combustion and reduce unburned components. However, this is for a newly installed large-scale incinerator, In many small furnaces, countermeasures are difficult. Since it is difficult to improve combustion in these combustion furnaces from the viewpoint of operation management, it is necessary to take measures to select incinerated materials and to suppress the emission of dioxins from the side of plastic materials.

However, as a measure to prevent the generation of dioxins from the plastic material side, it is fundamental to reduce the amount of chlorine-containing plastic waste, but there are few technical measures. Only patent 282420
In the publication No. 3, an inorganic iron compound, that is, spindle-shaped hydrous ferric oxide particles (goethite) and a surface water content of 0.02
A plastic garbage bag made of a thermoplastic resin film containing 0.1 to 20.0% by weight of one or more types of granular magnetite particles having a weight percentage of at least ² % by weight / m ² / q together with combustible waste. By doing so, combustion efficiency can be maintained even under low temperature and low oxygen concentration conditions,
It is disclosed that the unburned residue and ash after incineration or harmful substances are reduced as much as possible.

[0008]

The above-mentioned Patent No. 28242
According to the technology disclosed in Japanese Patent Publication No. 03, the burning of plastic garbage bags is improved, and the emission of dioxins can be reduced, but the coloring of the spindle-shaped hydrous ferric oxide particles and the magnetite particles themselves is strong. Because it appears, it is not suitable for coloring by the addition of dye, and the color of the spindle-shaped hydrous ferric oxide particles and the magnetite particles themselves is brown, and the appearance is poor, so the garbage bag is the main use, and especially the aesthetic appearance It is hardly used for the required plastic molded products.

The present inventor has conducted tests and researches on measures to prevent the generation of dioxins from the side of plastic materials. As a result, the organic acid iron salt having a specific number of carbon atoms has improved the combustion efficiency of plastic-based garbage. It was found that combustion efficiency comparable to spindle-shaped hydrous ferric oxide particles and magnetite was obtained in a much smaller amount than spindle-shaped hydrous ferric oxide particles and magnetite, and that the material itself was less colored. The present invention has been accomplished.

[0010] That is, the object of the present invention is to provide a plastic molding material which is excellent in combustion efficiency, is colored as little as possible by the material itself, and can be colored by adding a dye depending on the use, and a plastic using the material. It is to obtain a molded article.

[0011]

According to a first aspect of the present invention, there is provided a plastic molding material containing 0.01 to 1.0% by weight of an organic acid iron salt selected from organic acid iron salts as a Fe content in a plastic. .

[0012] Such a plastic molding material has excellent combustion efficiency and burns completely within a short time. Further, by adding the organic acid iron salt to the plastic, excellent combustion efficiency can be obtained even when the amount of iron added is small. As described above, since the amount of iron added is small, coloring caused by iron contained in the plastic is small, and the coloring according to the application, that is, coloring by adding a dye is suitable.

A plastic molding material according to a second aspect is characterized in that the organic acid iron salt according to the first aspect has a carbon number in the range of 2 to 30.

When the organic acid iron salt has a carbon number in the range of 2 to 30, the kneadability with plastic is good,
It is possible to improve the moldability and strength of a molded article using this molding material.

The plastic molding material according to claim 3 is characterized in that the content of the organic acid iron salt in the plastic according to claim 1 or 2 does not exceed 2.0% by weight.

When the content of the organic acid iron salt in the plastic does not exceed 2.0% by weight, the kneadability with the plastic can be maintained and the color of the organic acid iron salt itself can be improved. Less coloring, suitable for coloring by adding dye.

The plastic molded product according to claim 4 is
In plastics, the organic acid iron salt is 0.01 to
It was molded from a plastic molding material containing 1.0% by weight.

Such a plastic molded article has excellent combustion efficiency and burns completely in a short time. And
By adding the organic acid iron salt to the plastic, excellent combustion efficiency can be obtained even when the amount of iron added is small. As described above, since the amount of iron added is small, there is little coloring caused by iron contained in the plastic, and the coloring according to the application, that is, the coloring by adding the dye is suitable. It will be able to meet the demand.

The plastic molded product according to claim 5 is
The organic acid iron salt according to claim 4, which has 2 to 3 carbon atoms.
It is characterized by being in the range of 0.

When the organic acid iron salt has a carbon number of 2 to 30, the kneadability with the plastic is good,
The strength of the molded product can be improved.

[0021] The plastic molded product according to claim 6 is
The content of the organic acid iron salt in the plastic according to claims 4 and 5 does not exceed 2.0% by weight.

As described above, when the content of the organic acid iron salt in the plastic does not exceed 2.0% by weight, the kneadability with the plastic can be maintained, and the color of the organic acid iron salt itself depends on the color. Since there is little coloring and it is suitable for coloring by adding a dye, the molded plastic molded article can meet aesthetic requirements.

[0023] The plastic molded product according to claim 7 is
Plastics contain 0.01 to 1.0% by weight of an organic acid iron salt having a carbon number of 2 to 30 as Fe, and organic aluminums, zinc oxides and organic acids having a carbon number of 2 to 30 Plastic molding containing at least one of a white organic acid metal salt or a white organic acid alkaline earth metal salt selected from calcium and 0.5% or more by weight of aluminum, zinc, or calcium with respect to Fe content. It is characterized by being molded from a material.

Such a plastic molded article has excellent combustion efficiency and burns completely in a short time. And
By adding the organic acid iron salt to the plastic, excellent combustion efficiency can be obtained even when the amount of iron added is small. As described above, since the amount of iron added is small, there is little coloring caused by iron contained in the plastic, and the coloring according to the application, that is, the coloring by adding the dye is suitable. It will be able to meet the demand. When the organic acid iron salt has a carbon number in the range of 2 to 30, the kneadability with the plastic is good, and the strength of the molded product can be improved. Furthermore, since the white organic acid metal salt is used in combination, the coloring caused by iron is masked, and a white plastic molded product is obtained as a whole.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a plastic molding material according to the present invention and a plastic molded product using the material will be described.

The plastic molding material of the present invention can be used in a plasticized manner, wherein the organic acid iron salt is contained in an amount of 0.01 to 1.0 as Fe content.
% By weight. The plastic includes a thermoplastic resin which can be formed into an arbitrary shape by heating and a thermosetting resin which is cured by heating and does not reproduce plasticity.

As the plastic used in the present invention,
For example, thermoplastic resins such as low-density polyethylene, linear low-density polyethylene, high-density polyethylene, polypropylene, polyacetal resin, various ABS resins, polystyrene resins, and copolymers and polymers of these resins with other resins Examples include blends, polyethylene having an inomer, and copolymers of ethylene with other polymerizable monomers such as (meth) acrylic acid ester and vinyl acetate. Examples of the thermosetting resin include various epoxy resins, melamine resins, phenol resins, and urea resins.

The organic acid iron salt used in the present invention refers to an organic compound having acidity. Examples of the acidic compound include compounds having the following functional groups: carboxylic acid, sulfonic acid, sphinic acid and the like. The carboxylic acid includes citric acid, gluconic acid, benzoic acid, naphthenic acid and the like, and aliphatic iron carboxylate is preferred from the viewpoint of heat stability and moldability.

The organic acid iron salt has a carbon number of 2 to 3
Those having a range of 0 are preferred as those which can be uniformly kneaded with the plastic, and particularly preferred are iron salts of aliphatic carboxylic acids having 16 or more carbon atoms. Aliphatic carboxylic acids are one or more of natural or synthetic, saturated or unsaturated carboxylic acids,
The structure may have a side chain, a hydroxyl group, a keto group, or an epoxy group.

Specific examples of the organic acid include stearic acid,
12-hydroxystearic acid, araginic acid, heptadecylic acid, elaidic acid, erucic acid, behenic acid, montanic acid, isostearic acid, epoxystearic acid, oleic acid, lauric acid, myristic acid, palmitic acid, ricinoleic acid, linolenic acid, linoleic acid Fatty acids such as acids can be used.

Among these organic acids, 12-hydroxystearic acid, stearic acid, and behenic acid are preferred, and 12-hydroxystearic acid is most preferred. The iron salts of these carboxylic acids can be mainly used in the present invention, but carboxylic acids such as zinc salts, aluminum salts and calcium salts can also be used in combination.

The above-mentioned organic iron iron salt used in the present invention is an amorphous particle. Unlike inorganic particles, even if it does not have a particle diameter of 1.0 μm or less, if it is in powder form, it can be dried into pellets. It can be blended and kneaded with a plastic easily and uniformly by an extruder.

The organic acid iron salt in the present invention can be produced by two methods, a substitution method and a melting method. In the substitution method, an aqueous solution of a meltable iron salt, an organic acid and an organic acid sodium are dissolved, and the organic acid iron salt is obtained as a precipitate. In the melting method, an organic acid and iron hydroxide are heated and melted and dehydrated to produce an organic acid iron salt.
In the present invention, an organic acid iron salt prepared by either method can be used. However, although a substitution method that tends to cause less coloring is desirable in terms of quality, a dry melting method is preferable in terms of cost. The dry melting method is a method in which iron oxide or iron hydroxide and an organic acid are heated and melted to obtain an organic acid iron salt by a dehydration reaction.

In the present invention, one of the metals other than iron, for example, one selected from zinc, aluminum, calcium, and magnesium according to purposes other than flammability, with iron as a main component, taking into account combustion efficiency. Alternatively, organic acid iron salts and zinc salts, organic acid iron salts and calcium salts, organic acid iron salts and magnesium salts prepared by mixing two or more kinds can also be used. By mixing and using these, the coloring of the iron molecules themselves can be further alleviated without lowering the combustion efficiency.

The content of the organic acid iron salt in the plastic in the present invention is not particularly limited as long as it contains 0.01 to 1.0% by weight in terms of Fe, but does not exceed 2.0% by weight. Is preferred. When the content of the organic acid iron salt in the plastic exceeds 2.0% by weight, the coloring of the plastic molding material due to the color of the organic acid iron salt itself becomes strong, and the molded article molded from the material. However, it is not preferable as a molding material for molded articles such as bags, for example, since the strength of the molded article decreases and the weather resistance also deteriorates.

The plastic of the present invention, particularly the molding material in which the plastic is a thermoplastic resin, is prepared as pellets. For the pellets to be used as the masterbatch, a method of preparing pellets having a concentration higher than the above-mentioned concentration of 2.0% by weight, mixing an appropriate amount with the natural pellets, blending and kneading the whole so as to have the above-mentioned content, and using the mixture Is common.

The plastic molded article of the present invention is formed from the plastic molding material. The molded article is not particularly limited. For example, plastic film, wrap film, protect film, stretch film, various bags sealed with plastic film, film film for inner layer of paper bag, plastic film are cut, stretched to increase strength, and woven into cloth. All plastic molding such as cross film, various bags sealed with cross film, bubble type cushioning sheet, composite material laminated with plastic film on paper sheet, liquid container using this composite material, various plastic miscellaneous goods, plastic container etc. Goods,
All articles for incineration or recovery as thermal energy are covered.

For example, when the molded article is a bag made of a blow-molded film using pellets of the above-mentioned plastic molding material as a raw material, generally, a plastic such as a polyethylene resin and an organic acid iron salt are adjusted to the above-mentioned content ratio. After mixing and supplying to an ordinary extruder, etc., and melt-mixing,
A pellet for a masterbatch to be a part of a plastic molding material is prepared, and then finally blended into a natural pellet so as to have an iron content range of the present invention, an inflation method,
It can be manufactured by forming a film into a film having a thickness of about 15 to 200 μm by a method such as a T-die method and heat-sealing the film into a predetermined shape.

The plastic molding material for molding the bag may further contain, if necessary, various conventional additives such as a lubricant, an antiblocking agent, a weathering agent, a coloring agent and an antistatic agent. Various organic and inorganic fillers can be used in combination.

The above-mentioned plastic molding material of this example and the plastic molded product using the material are prepared by adding an organic acid iron salt to a plastic in an amount of 0.01 to 1.0% by weight as Fe.
Since it contains, it has excellent combustion efficiency, can be completely burned in a short time, and has a small amount of iron to be added. Since it is suitable for coloring, that is, coloring by adding a dye, the plastic molded article can meet aesthetic requirements. When the organic acid iron salt has a carbon number in the range of 2 to 30, kneading with a plastic is good, and the moldability and strength of a molded article using this molding material can be improved. Also,
When the content of the organic acid iron salt in the plastic is not more than 2.0% by weight, the kneadability with the plastic can be maintained, and the coloration of the organic acid iron salt itself is small, and the addition of the dye is effective. This is also suitable for coloring, so that the plastic molding also meets the aesthetic requirements.

Furthermore, when a white organic metal salt is used in combination with the organic acid iron salt contained in the plastic, the coloring caused by iron is masked, and a white plastic molded product is obtained as a whole. Thus, plastic molded articles can meet even more aesthetic requirements.

[0042]

EXAMPLES Examples and comparative examples of the present invention will be described below.
The features of the present invention will be illustrated. However, the present invention is not limited to these examples.

Since the evaluation of the flammability can be judged even if it is not the final product, the evaluation of the flammability of the present invention was mainly performed on the cylindrical pellets.

<Evaluation Object> Example 1 Low-density polyethylene (J-LEX LDPEJH70)
7N 9A08DH3) to Asahi Denka Co., Ltd.
Zinc (iron / zinc = 2: 1, DM1022) was added to 1.0%, mixed, extruded by an extruder, cooled and cut to obtain pale-colored flesh-colored cylindrical pellets.

Example 2 In Example 1, the addition ratio of iron / zinc behenate was 2.0%.
The mixture was extruded with an extruder, cooled and cut to obtain pale-colored flesh-colored cylindrical pellets.

Example 3 In Example 1, iron behenate (DM666) was added in place of iron / zinc behenate, mixed, extruded by an extruder, cooled and cut to obtain pale-colored flesh-colored cylindrical pellets. Obtained.

Example 4 In Example 2, the addition ratio of iron / zinc behenate was 2.0%.
The mixture was extruded with an extruder, cooled and cut to obtain pale-colored flesh-colored cylindrical pellets.

Comparative Example 1 The same low-density polyethylene as in Example 1 without any addition was used
The mixture was extruded by an extruder, cooled and cut to obtain cylindrical pellets.

Comparative Example 2 In Example 1, instead of iron / zinc behenate, goethite (fused iron oxide hydroxide) manufactured by Iron Source Co., Ltd. was used in an amount of 0.2%.
5% was added and mixed, extruded with an extruder, and cut after cooling to obtain cylindrical pellets.

Comparative Example 3 In Comparative Example 2, mixing was carried out with the addition ratio of goethite changed to 0.5%, extruded with an extruder, cooled and cut to obtain cylindrical pellets.

Comparative Example 4 In Comparative Example 2, mixing was carried out with the addition ratio of goethite changed to 1.0%, extruded with an extruder, cooled and cut to obtain cylindrical pellets.

Comparative Example 5 In Example 1, the addition ratio of iron / zinc behenate was set to 0.
The mixture was changed to 25%, mixed, extruded by an extruder, cooled and cut to obtain columnar pellets.

Comparative Example 6 In Example 1, the addition ratio of iron / zinc behenate was set to 0.
The mixture was changed to 16%, mixed, extruded with an extruder, cooled and cut to obtain flesh-colored cylindrical pellets.

In the above Examples and Comparative Examples, the combustion efficiency was evaluated by the combustion time and the maximum temperature during combustion. The burning time was measured by weighing 10 mg of pellets and 300 ml /
In air at a rate of 10 ° C./min.
The change in weight when the temperature was raised to 600 ° C. was measured using a thermogravimetric analyzer (SSC / 5200S manufactured by Seiko Instruments Inc.).
II TG / DTA 32φ), and expressed as the time required from the time when rapid weight loss started to the time when rapid weight loss ended (combustion is estimated to occur during this time).

Table 1 shows that Examples 1 to 4 and Comparative Examples 1 to 6
e, the combustion start temperature, the combustion end temperature, the combustion time, and the maximum temperature during combustion.

[0056]

[Table 1] The calculated value of the amount of Fe contained in 100 g of the thermoplastic resin pellets (calculated from the amount of the iron compound added and the chemical structure, Fe00H for goethite, and trivalent iron salt for behenate iron salt). From the results of measurement using a thermogravimetric analyzer, the combustion start temperature was the temperature at which the weight loss rate exceeded 10%. The combustion end temperature was the temperature at which the weight loss rate exceeded 90%. The burning time was calculated from the difference between the two.

<Evaluation> From Table 1, it can be seen that Examples 1 to 4 have higher complete flammability than the pellets of Comparative Example 1 consisting of only low-density polyethylene, judging from the burning time, the burning peak temperature and the like. It can be seen that the property has been improved.

FIG. 1 shows the results of Examples 1 and 3 and Comparative Example 1.
3 shows the combustion state of the plastic pellet No. 3 in relation to the temperature and the weight loss rate measured by a thermogravimetric analyzer. In this figure, the vertical axis represents the weight reduction rate (%), the horizontal axis represents the temperature (° C.), the curve A is the plastic pellet of Example 1, the curve B is the plastic pellet of Example 3, and the curve C is Comparative Example 1. And the curve D indicates the plastic pellet of Comparative Example 3.

In FIG. 1, when curves A, B, and D, which are combustions in the same air, are compared with curve C, it is similar to curve D, which is the combustion of plastic pellets containing goethite in air. Since the curves A and B are steeper than the curve C, it can be understood that the combustion speed is high, the weight is suddenly reduced due to the combustion, and the combustion is completed in a very short time.

That is, the pellets as a plastic molding material according to the present invention, as shown by the curves A and B in FIG. ), About 3
When it exceeds 80 ° C, it burns at a stretch and burns completely in a short time. The time required for burning 10 mg pellets in air is 100 seconds or less, preferably 60 seconds or less, and the peak temperature during burning is 460 ° C or more. 480 ° C. or higher, and the combustion start temperature is preferably 370 ° C. or higher, and most preferably 390 ° C. or higher.

As shown in FIG. 1, in the comparison of the decomposability before combustion, the order of curve C> curve D> curve A ≧ curve B is in order, and Examples 1 and 3 of the present invention clearly show that unburned substances About 380
Less generation below ℃. Also, since it is a trivalent iron salt, since the organic acid iron salt is added to the goethite in an amount of a fraction of the real iron content, the organic acid iron salt is clearly smaller in effect than the organic acid iron salt. Can be seen. The organic acid iron salt selected from the organic acid iron salts is 0.01 to 1.0 to the plastic as Fe content.
The plastic pellets containing by weight have little thermal decomposability up to about 380 ° C., and burn at a burst when the temperature exceeds about 380 ° C., indicating that they are completely burned in a short time.

[0062]

As described above, according to the plastic molding material according to the present invention and the plastic molded article using the material, the organic acid iron salt is added to the plastic in an amount of 0.1%.
Since it contains from 0.01 to 1.0% by weight, it has excellent combustion efficiency. In the case of polyethylene, for example, it has almost no thermal decomposability up to about 380 ° C, and if it exceeds about 380 ° C, it burns at once and completes in a short time. Since it can be burned, it is possible to effectively prevent the generation of dioxins from the plastic molding material and the plastic molded article using the material, and the combustion temperature is a temperature which has been conventionally required as a temperature for decomposing dioxin. The plastic molding material and the material according to the present invention are also used in existing incinerators and small incinerators in which the combustion temperature is not controlled to maintain a high combustion temperature because the temperature is much lower than that of The incineration of plastic molded articles can be performed while suppressing the production of dioxins. Further, since the plastic molding material is less colored by the color of the iron molecule itself and is suitable for coloring by adding a dye, the molded plastic molded product can meet aesthetic requirements. If the organic acid iron salt is an aliphatic carboxylic acid iron salt, the heat stability and the moldability are good, and the molded article can be easily molded. Also, the content of the organic acid iron salt in the plastic,
When the content does not exceed 2.0% by weight, the coloring of the iron molecule itself is less and the coloring by the addition of the dye becomes possible. Can be obtained.

[Brief description of the drawings]

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a diagram showing a weight loss rate with respect to a temperature at which thermogravimetric analysis was performed in air on pellets of Examples 1 and 3 and Comparative Examples 1 and 3.

[Explanation of symbols]

 A Example 1 B Example 3 C Comparative Example 1 D Comparative Example 3

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4F071 AA12X AA15 AA20 AA22 AA22X AA34X AA40 AA41 AA42 AA77 AC09 BB06 BB09 BC01 BC04 4J002 BB031 BB121 BC031 BN151 CB001 CC031 CC181 CC191 CD001 EG037 EG046 206

Claims (7)

[Claims] 1. A plastic molding material characterized in that the plastic contains 0.01 to 1.0% by weight of an organic acid iron salt as Fe. 2. The organic acid iron salt having 2 to 30 carbon atoms.
The plastic molding material according to claim 1, wherein 3. The method according to claim 1, wherein the content of the organic acid iron salt in the plastic does not exceed 2.0% by weight.
Or the plastic molding material according to 2. 4. A plastic molded product obtained by molding a plastic from a plastic molding material containing 0.01 to 1.0% by weight of an organic acid iron salt as Fe content. 5. The iron salt of an organic acid has a carbon number of 2 to 30.
The plastic molded article according to claim 4, wherein 6. The plasticizer according to claim 4, wherein the content of the organic acid iron salt does not exceed 2.0% by weight.
Or a plastic molded article according to 5. 7. A plastic containing 0.01 to 1.0% by weight of an organic acid iron salt having a carbon number of 2 to 30 in terms of Fe, and an organic aluminum salt having a carbon number of 2 to 30; At least one of a white organic acid metal salt or a white organic acid alkaline earth metal salt selected from zinc acid and organic acid calcium, at least 0.5 times the weight of aluminum, zinc, or calcium with respect to Fe content; A plastic molded article characterized by being molded from a plastic molding material containing: