JP2001002846A - Resin composition for inhibiting generation of chloride and method for inhibiting generation of chloride using the composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a resin composition, which is able to efficiently inhibit generation of chlorides such as dioxins when combusted along with a chlorine- bearing polymer by adding a reducing agent to a resin base selected from a polyethylene resin, a polypropylene resin, a polystyrene resin and a polyester resin. SOLUTION: The resin composition for inhibiting generation of chlorides by adding 0.01 to 60 wt.% of a reducing agent to one or more resin bases selected from a resin base selected from a polyethylene resin, a polypropylene resin, a polystyrene resin and a polyester resin. An aluminium compound may be used in combination with the reducing agent. The reducing agent preferably includes hypophoshites or phosphites, and the aluminium compound preferably includes one or more members selected from aluminium phosphate, aluminium sulfate, aluminium hydroxide, aluminium oxide and activated alumina. The resin composition is added to a refuse in an amount of 1.0 to 90 wt.% and incinerated to inhibit generation of chlorides.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin composition for preventing chlorinated products and a method for preventing chlorinated products using the composition.

[0002]

2. Description of the Related Art Conventionally, chlorine-based polymers such as polyvinyl chloride-based resins and polyvinylidene chloride-based resins used in large quantities as containers, decorative sheets, wrap films, etc. If incinerated when treated as waste, chlorinated substances containing toxic dioxins may be generated, and the generated chlorinated substances are discharged into the atmosphere together with smoke and cause air pollution.
It is a big social problem.

In order to solve such a problem, conventionally,
Calcium hydroxide, calcium carbonate, etc. in chlorine polymers such as polyvinyl chloride resins and polyvinylidene chloride resins, and in polyolefin resins, polystyrene resins, and polyester resins that are usually incinerated with chlorine polymers. To capture hydrogen chloride gas, which is a precursor of dioxins and the like generated when the chlorine-based polymer is incinerated,
A method for preventing generation of chlorinated substances such as dioxins has also been proposed. However, the total surface area of calcium carbonate, calcium hydroxide, and the like added to the resin is insufficient to effectively capture the generated hydrogen chloride gas, and the efficiency of capturing the hydrogen chloride gas is insufficient. There was a problem. In addition, in order to sufficiently capture the generated hydrogen chloride gas, a large amount of calcium carbonate or calcium hydroxide must be added. And there is a problem economically.

The present inventors have conducted intensive studies in view of the above-mentioned problems of the prior art, and as a result, have been conventionally incinerated together with a chlorine-based polymer or the like in a garbage incineration plant, and have themselves been incinerated to produce a chlorine-based compound such as dioxin. When a reducing agent is added to a resin substrate selected from a polyolefin-based resin, a polystyrene-based resin, and a polyester-based resin that does not occur, when these are incinerated with a chlorine-based polymer,
The inventors have found that chlorinated substances such as dioxins which may be generated during incineration of a chlorine-based polymer can be efficiently prevented, and have completed the present invention.

[0005]

That is, the resin composition for preventing chlorinated product of the present invention comprises one or more selected from polyethylene resins, polypropylene resins, polystyrene resins and polyester resins. Characterized in that a reducing agent is added to a resin base material.

[0006] The content of the reducing agent in the composition of the present invention is preferably 0.01 to 60% by weight. In addition, a reducing agent and an aluminum compound may be used in combination. In this case, one or more selected from hypophosphorous acids and phosphorous acids as the reducing agent, and aluminum phosphate and aluminum sulfate as the aluminum compound, It is preferable to use one or more selected from aluminum hydroxide, aluminum oxide, and activated alumina.

[0007] The method for preventing chlorinated products of the present invention is characterized by incinerating dust together with the resin composition.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION As the base resin in the resin composition for preventing chlorinated product of the present invention, one or more selected from polyolefin resins, polystyrene resins and polyester resins are used. You. Polyolefin resins include high-density polyethylene, low-density polyethylene, linear low-density polyethylene, polyethylene resins such as ethylene copolymer, polypropylene homopolymer,
Examples include polypropylene-based resins such as propylene copolymers. Polystyrene resins include polystyrene, acrylonitrile-styrene copolymer, butadiene-styrene copolymer, acrylonitrile-butadiene-
Styrene copolymer, methyl methacrylate-styrene copolymer and the like can be mentioned. Examples of the polyester-based resin include polyethylene terephthalate, polybutylene terephthalate, and polycarbonate. These can be used in combination of two or more. In addition, a polymer blend of the above resin and another resin, a polymer alloy, or the like can also be used.

Examples of the reducing agent contained in the resin substrate include hypophosphorous acids, phosphorous acids, metal hydrides, metal hydride complex compounds, borane, hydrazine and the like. These can be used alone or in combination of two or more.

As the above-mentioned hypophosphorous acid, hypophosphorous acid and hypophosphite are used. Examples of the hypophosphite include sodium hypophosphite, potassium hypophosphite, calcium hypophosphite, magnesium hypophosphite, ammonium hypophosphite and the like. Sodium phosphite and calcium hypophosphite are preferred. The above-mentioned hypophosphorous acid and hypophosphite can be used alone or in combination of two or more.

As the phosphorous acid, phosphorous acid or phosphite is used. Examples of the phosphite include sodium phosphite, potassium phosphite, calcium phosphite, magnesium phosphite, ammonium phosphite, sodium hydrogen phosphite, potassium hydrogen phosphite, calcium hydrogen phosphite, and sodium phosphite. Magnesium phosphate and the like. Of these, phosphorous acid, sodium phosphite, and calcium phosphite are preferred. Phosphorous acid or phosphite can be used alone or in combination of two or more.

Examples of the metal hydride include alkylaluminum hydride (for example, diisobutylaluminum hydride, etc.) and trialkyl (or aryl) having 1 to 18 carbon atoms.
Ammonium (eg, trimethylammonium, triisobutylaluminum, etc.), alkyltin hydride compounds (eg, tri-α-butyltin hydride, triphenyltin hydride, etc.), alkylhydrasilanes having 1 to 18 carbon atoms (eg, triethylsilane, Phenyldimethylsilane, triethoxysilane, tri-n-butylsilane, diphenylsilane, diethylsilane and the like). These metal hydrides can be used alone or in combination of two or more.

The metal hydride complexes include metal borohydride salts of metals such as lithium, potassium, sodium, calcium, zinc and aluminum (eg, sodium trimethoxyborohydride, sodium triacetoxyborohydride, borohydride). Zinc, etc.), lithium,
Metal alkyl borohydrides, aluminum hydride metal salts, alkyl aluminum hydride metal salts of metals such as potassium, sodium, calcium, zinc, aluminum and the like. Examples of borane include boron tribromide, alkylborane such as texyl borane and disiamyl borane, amine complexes of borane such as diborane and trimethyl borane, and hydrazines include hydrazine, hydrazine dihydrochloride, hydrazine hydrate, hydrazine hydrochloride, Hydrazine sulfate and the like can be mentioned. These hypophosphorous acids, phosphorous acids, metal hydrides, metal hydride complex compounds, borane, hydrazine and the like can be used alone or in combination of two or more. Of the above reducing agents, hypophosphorous acids and phosphorous acids are preferred.

In the present invention, an aluminum compound is preferably used in combination with the above reducing agent. One or more selected from hypophosphorous acid and phosphorous acid are used as the reducing agent, and aluminum phosphate and aluminum sulfate are used as the aluminum compound. , Aluminum hydroxide, aluminum oxide, and activated alumina.

The resin composition of the present invention is obtained by adding the above-mentioned reducing agent to the resin base component by adding and kneading the resin component. The content of the reducing agent in the resin composition of the present invention is as follows. , 0.01 to 60% by weight, especially 1.0 to 50%
% By weight. If the content of the reducing agent in the polymer composition is less than 0.01% by weight, the effect of preventing the generation of dioxins may not be exhibited,
If it exceeds 60% by weight, the resin becomes brittle, and there is a possibility that the resin cannot be molded.

As a method for mixing the base resin component and the reducing agent, a method in which the reducing agent is added and kneaded in a state where the resin is melted in an extruder or the like can be mentioned, for example, injection molding, extrusion molding, compression molding, and the like. It is formed by molding, T-die extrusion or the like.

In the resin composition of the present invention, in addition to the reducing agent, an inorganic calcium salt, a plasticizer, a stabilizer, an antioxidant, a lubricant, a filler, a colorant, a reinforcing agent, and an ultraviolet absorber For example, various additives conventionally used by being added to a resin may be contained.

According to the method for preventing chlorinated product of the present invention, a chlorinated product is incinerated by burning a resin composition containing a reducing agent together with refuse containing a chlorine-based polymer or the like which may generate a chlorinated product by incineration. Is to prevent the occurrence of.
The addition ratio of the resin composition of the present invention to dust is 1.0%.
% By weight to 90.0% by weight.

The resin composition of the present invention can be molded into a sheet or the like, and products such as containers and packaging materials that have been widely used in the past can be formed from the resin composition of the present invention. When products such as containers are formed from the resin composition of the present invention, when these products are used up and disposed of by incineration, they are incinerated together with the garbage containing the chlorine-based polymer, and the chlorine-based heavy It is possible to effectively prevent the generation of chlorinated substances such as dioxins which may be generated by incineration of the coalescence.

[0020]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples. Examples 1-4, Comparative Example 1 In an extruder, low density polyethylene (Nippon Petrochemical Co., Ltd.)
Manufactured by Lexlon F-31) per 100 parts by weight,
After adding and kneading the reducing agents and the like shown in Table 1 (Comparative Example 1 did not add the reducing agents and the like), it was extruded from an extruder to form a sheet. After 800 g of this sheet was mixed with 200 g of a vinyl chloride sheet (Super Clean, manufactured by Mitsubishi Chemical Corporation),
It was incinerated at 00 ° C, and the concentration of chlorinated substances in the generated flue gas was measured. Chlorinated substance concentration (equivalent to dioxins)
Was measured in accordance with "Manual for Standard Measurement and Analysis of Dioxins in Waste Disposal", Environmental Improvement Section, Water Environment Department, Health and Welfare Bureau, Ministry of Health and Welfare. The chlorinated product concentration was measured at the outlet of the bag filter. The results are shown in Table 1. In Table 1, the mixing ratio of the reducing agent and the like indicates the weight ratio.

[0021]

[Table 1]

Examples 5-6, Comparative Example 2 In an extruder, polypropylene (manufactured by Nippon Petrochemical Co., Ltd.)
After adding and kneading the reducing agents and the like shown in Table 2 with respect to 100 parts by weight of Nisseki Poly F-150J) (Comparative Example 2 did not add the reducing agents and the like), it was extruded from an extruder to form a sheet. 800 g of this sheet was incinerated at 600 ° C. with 200 g of the same vinyl chloride sheet as used in Examples 1 to 4, and the concentration of chlorinated substances in the generated flue gas was measured in the same manner as in Examples 1 to 4. The results are shown in Table 2. In Table 2, the mixing ratio of the reducing agent and the like indicates a weight ratio.

[0023]

[Table 2]

Examples 7 and 8, Comparative Example 3 In an extruder, per 100 parts by weight of polycarbonate (Calibur 300-10, manufactured by Sumitomo Dow), Table 3
(Comparative Example 3 did not add a reducing agent or the like) and extruded from an extruder to form a sheet.
500 g of this sheet was mixed with 500 g of the same vinyl chloride sheet as used in Examples 1 to 4, then incinerated at 700 ° C., and the concentration of chlorinated substances in flue gas generated in the same manner as in Examples 1 to 4. Was measured. The results are shown in Table 3. In Table 3, the mixing ratio of the reducing agent and the like indicates the weight ratio.

[0025]

[Table 3]

Examples 9 to 10, Comparative Example 4 In an extruder, a reducing agent or the like shown in Table 4 was added and kneaded to 100 parts by weight of polystyrene (Estyrene GP G-20 manufactured by Nippon Steel Chemical Co., Ltd.). After that (Comparative Example 4 did not add a reducing agent or the like), it was extruded from an extruder to form a sheet. After mixing 500 g of this sheet with 500 g of the same vinyl chloride sheet as used in Examples 1 to 4,
And the concentration of chlorinated substances in the flue gas generated in the same manner as in Examples 1 to 4 was measured. The results are shown in Table 4. In Table 4, the mixing ratio of the reducing agent and the like indicates the weight ratio.

[0027]

[Table 4]

[0028]

As described above, the olefin of the present invention in which a reducing agent or a reducing agent and an aluminum compound are contained in a resin base composed of a polyethylene-based resin, a polypropylene-based resin, a polystyrene-based resin, and a polyester-based resin. The polymer system composition itself is not likely to generate chlorinated substances such as dioxins by incineration itself, and by incineration with garbage which may generate chlorinated substances by incineration of chlorine-based polymers and the like, The generation of dioxins in a garbage incineration plant can be effectively prevented. Polyethylene-based resins, polypropylene-based resins, polystyrene-based resins, and polyester-based resins used as the base resin of the composition of the present invention are widely used together with chlorine-based polymers, and containers such as these resins, products such as packaging films, etc. In addition, a large amount of polyethylene resin products, polypropylene resin products, polystyrene resin products, and polyester resin products are disposed of after use in large quantities. Therefore, by manufacturing a product such as a container with the resin composition of the present invention,
It is incinerated together with garbage containing a chlorine-based polymer that may generate chlorinated substances when discarded, and the generation of chlorinated substances can be effectively prevented.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C08K 3/00 F23G 7/12 Z C08L 23/10 B01D 53/34 ZAB 25/04 134E 67/00 B09B 3 / 00 ZAB F23G 7/12 303F (72) Inventor Kazuhiro Terada 4-66-1, Horikiri, Katsushika-ku, Tokyo Miyoshi Oil & Fats Co., Ltd. (72) Inventor Masafumi Moriya 4-66-1, Horikiri, Katsushika-ku, Tokyo Miyoshi Y-Fat Co., Ltd. F-term (reference) DE147 DG047 DH026 DH036 DH047 FD206 FD207

Claims (5)

[Claims] 1. Chlorine obtained by adding a reducing agent to one or more resin base materials selected from polyethylene resin, polypropylene resin, polystyrene resin and polyester resin. A resin composition for preventing generation of a compound. 2. The content of the reducing agent is 0.01 to 60% by weight.
The resin composition for preventing chlorinated matter generation according to claim 1, which is: 3. The resin composition according to claim 1, wherein an aluminum compound is used in combination with the reducing agent. 4. The reducing agent is one or more selected from hypophosphorous acids and phosphorous acids, and the aluminum compound is selected from aluminum phosphate, aluminum sulfate, aluminum hydroxide, aluminum oxide and activated alumina. 4. The resin composition for preventing chlorinated product according to claim 3, wherein the resin composition is one or two or more kinds. 5. A method for preventing generation of chlorinated substances, comprising incinerating dust together with the resin composition according to any one of claims 1 to 4.