JPS5951946A - Polymer composition and antistatic film, sheet or molding - Google Patents

Abstract

PURPOSE:To provide a polymer compsn. which gives films and sheets having excellent antistatic properties, by uniformly mixing a specified high-molecular sulfonic acid (salt) and an org. compd. having a sulfo (salt) group with a thermoplastic polymer. CONSTITUTION:0.1-30pts.wt. polymer having a repeating unit of the formula (wherein R is H, methyl; M is H, alkali metal, alkaline earth metal, ammonium; R1, R2, R3, R4 are each H, halogen, alkyl, alkoxy) as a structural unit, such as polysodium styrenesulfonate, and 0.1-40pts.wt. org. compd. having a sulfo (salt) group, such as benzenesulfonic acid or sodium dodecylbenzene sulfonate, are blended with 100pts.wt. thermoplastic polymer such as magnesium type ionomer of an ethylene/methacrylic acid copolymer to obtain the desired polymer compsn.

Description

DETAILED DESCRIPTION OF THE INVENTION Antistatic compositions of various thermoplastic polymers such as polyvinyl chloride, anti-static films made from the compositions,
Regarding sheets or molded products. More specifically, the present invention relates to a thermoplastic polymer composition with good antistatic properties in which polystyrene sulfonate is uniformly mixed, and an antistatic film, sheet, or molded product made from the composition.

In recent years...;1? The range of products that require the ability to prevent the occurrence of heat leaks has become extremely wide-ranging. Examples include packaging for pharmaceuticals, cosmetics, and foods, covers for packaging machines, dust-proof curtains for clean rooms and operating rooms, seat covers, packaging for precision equipment, and packaging for semiconductors.

Particularly in packaging for semiconductors, metal oxide film semiconductor circuits and the like are destroyed by static electricity generated on the surface of the packaging film, so low-resistance packaging films and O/sheets are required.

In addition, when metal oxide film semiconductor circuits are exported or imported, static electricity is generated when the package is opened due to contents inspection at customs and is often destroyed, so the packaging film is both low-resistance and transparent. It is also necessary to be able to see the contents.

Conventionally, methods have been adopted in which surfactants, conductive carbon black, and metals are added to polymeric substances in order to impart static protection properties.

Ordinary surfactants have a low molecular weight of several hundred to 1,000, which is relatively easy to migrate, based on the idea that they have an antistatic effect by migrating and arranging the surfactant from the inside of the polymer substance to the surface. It consists mainly of surfactants. However, polymeric materials to which surfactants have been added may be removed from the surface of the polymeric material during handling operations, or washed off due to moisture adhesion, making them difficult to use for long-term purposes. could not be used.

However, some products that contain carbon black or metal powder have the drawback that the carbon black or metal powder is missing from the polymer material, contaminating the packaged item in packaging applications, and due to its opacity. This limited its use.

On the other hand, polymer-type antistatic agents are limited to alkylene oxide derivatives with specific structures and are hardly used in practice. It is completely unknown to use antistatic agents of the type T.

On the other hand, as anionic antistatic agents for surface treatment, metal salts such as thorium polystyrene sulfonate have been known for a long time.
",) 3 2 6 discloses that a type of oligostyrene sulfonate copolymerized with a special monomer is effective as a low-resistance treatment agent for paper and sheets. However, these (・1 It was developed for surface treatment, and the treatment agents described in the Examples have poor compatibility as antistatic agents for compounding polymeric substances, making them completely impractical.

In particular, processing agents with a high degree of sulfonation that have low resistance lack molecular flexibility, so even if they are blended with polymeric substances, they are not mixed uniformly and cannot exhibit their excellent antistatic properties. It was not found to be useful as an antistatic agent for compounding polymeric substances.

The present invention has solved the various problems related to polystyrene sulfonic acid (salt) mentioned above (as a result of intensive research, we have found that polystyrene sulfonic acid (salt) and sulfonic acid group (or metal base)
The present invention has been completed by discovering that a mixture of (a) with a relatively low-volume f-Fl compound can be uniformly mixed into a thermoplastic polymer and exhibits excellent antistatic properties.

That is, the present invention comprises (a) 100 parts by weight of a thermoplastic polymer, and (b) - general formula (where 几 is hydrogen or a methyl group, M is hydrogen, an alkali metal, an alkaline earth metal, or ammonium). ,
R1, 1t2, R3, R4 are each the same or different from each other and are hydrogen, halogen, alkyl group or alkoxyl group) A polymer 01 to 30 double fluorescent moiety having as a constituent unit a repeating unit, (C) A polymer composition comprising 01 to 40 parts by weight of an organic compound having a sulfonic acid group and/or an organic compound having a sulfonic acid metal base, and a surface resistivity formed from the polymer composition is 1013Ω or less. ) %-proof film, sheet or molded product.

Next, each component constituting the present invention will be explained.

Polymers having repeating units of the general formula % (where R, M, R, , It2, R8, and 几 are as described above) as essential constituent units are polymers with different sulfone group introduction rates. Polymeric sulfonate or polymeric sulfonic acid containing. There is no restriction on the introduction rate of sulfone groups, but from the relationship of conductivity and water solubility, the introduction rate is 40 to 100 mol%, preferably 50
~100 mol% is desirable. Of course, polymers of styrene sulfo 7M salt mo/mer or styrene,
Methacrylic acid (salt), acrylic acid (salt), fumaric acid (
Copolymers with salts are also included. Regarding molecular weight,
Although it is not particularly important, the molecular weight is 10 to 5 million, but the preferred molecular weight is 2000 in terms of compatibility with thermoplastic resins.
~50,000, more preferably 3000~so O,O
o range.

In addition, poly()-rogenated styrene) sulfonate, poly(alkylated styrene) sulfonate, poly(alkoxylated styrene) sulfonate, poly(alkoxylated styrene) sulfonate, polystyrene sulfonate having a substituent on its aromatic ring, It also contains poly(α-methylstyrene) sulfonate. The counter ion of the polymer is one or a mixture of two or more selected from hydrogen, alkali metals, alkaline earth metals, and ammonium.

Methods for obtaining the polymeric sulfonates and/or polymeric sulfonic acids of the present invention are well known in the art. An example of the manufacturing method is shown below.

(5) Polystyrene sulfonic acid obtained by reacting with a sulfonic acid such as sulfuric anhydride or chlorosulfonic acid in a solvent such as polystyrene carbon tetrachloride or ethylene dichloride,
A method of neutralizing polystyrene sulfonate using an ammonia compound, an ionic alkali metal compound, or an ionic alkaline earth metal compound. For example, Tokko Sho s i
= See Publication No. 37226.

(B) Using a free radical initiator, styrene sulfonate, vinyl aromatic compounds such as styrene, chlorstyrene, tertiary butylstyrene, acrylonitrile, methacrylic acid (salt), acrylic acid (salt), fumaric acid (salt) ), etc. For example, see Japanese Patent Application Laid-Open No. 14820/1983.

The blending amount of the polymer sulfonate and/or polymer sulfonic acid with respect to 100 parts by weight of the thermoplastic polymer is 01 to 100 parts by weight.
30 parts by weight, preferably in the range of 05 to 20 parts by weight. If the amount is less than 1 part by weight, no antistatic effect will be observed, so it is not preferred.

When adding in an amount exceeding 30 parts by weight, a large amount of the third component, an organic f-polymer having a sulfonic acid group and/or its base, is added, resulting in a decrease in the mechanical properties of the thermoplastic polymer. Undesirable.

An organic compound having a sulfonic acid group and/or an organic compound having a sulfonic acid metal group has a molecular weight of 1 O"
``0'' is less than 0. Examples include al-benzenesulfonic acid compounds such as benzenesulfonic acid, p-toluenesulfonic acid, totinolbenzenesulfonic acid, and octadecylbenzenesulfonic acid; 1.6 - Diituprobylnaphthalenesulfonic acid, 1,6-butylnaphthalenesulfonic acid, todenylnaphthalenesulfonic acid, alkylnaphthalenesulfonic acid compound of naphthalenesulfonic acid, dodecylsulfone e5 tetrazofursulfonic acid, octadecylsulfonic acid, etc. an alkyl sulfonic acid compound (however, the alkyl group has 6 to 50 carbon atoms)
, dialkyl sulfosuccinic acid compounds such as dioctyl sulfosuccinic acid, naphthalene sulfonic acid soda-polmarine condensates, alkenesulfonic acids obtained by sulfonation of α-olefins, α-olefin sulfonic acid compounds such as hydroxy-7 alkanesulfonic acids, oleyl methyl taurine fatty acid amide sulfonic acids such as polymers, polymerizable vinyl group-containing sulfonic acid compounds such as styrene sulfonic acid, allyl sulfonic acid, ethyl 2-sulfonate methacrylate, 2-acrylamido-2-methylpropanesulfonic acid, and the above compounds. Metal salts of sulfonic acids such as lithium salts, sodium salts, potassium salts, silver salts, magnesium salts, lucium salts, barium salts, zinc salts, aluminum salts, cobalt salts, manganese salts, and tin salts (as described above). The alkyl group is an argylsulfonic acid compound, so 1 has 1 carbon number.
~50 pieces). The compounds included in these formulations are
You may use one type, or you may use two or more types (
・.

The amount of these compounds added ranges from 01 to 40 parts by weight, preferably from 05 to 30 parts by weight, based on 100 parts by weight of the thermoplastic polymer. If the amount is less than 0.01 parts by weight, a thermoplastic polymer composition in which the polymeric sulfonic acid salt and/or polymeric sulfonic acid are uniformly dispersed cannot be obtained. Moreover, if it exceeds 40 parts by weight, it is not preferable because it causes a decrease in the mechanical properties of the thermoplastic polymer. The organic compound having a sulfonic acid group and/or the organic compound having a sulfonic acid metal group is used in an amount of 033 to 4000 parts by weight, preferably 10 to 500 parts by weight, per 100 parts by weight of the polymer sulfonate and/or polymer sulfonic acid. The amount is preferably in the range of 30 to 300 parts by weight.

Thermal R+J plastic resins include polyolefins such as polyethylene, polypropylene, polybutene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ethylene-methacrylic acid copolymer, ethylene ionomer, and chlorinated polyethylene, and their derivatives. , polystyrene, polystyrenes and their copolymers such as acrylonitrile-styrene copolymer, acrylonitrile-styrene-butadiene copolymer, polyvinyl acetate, polyvinyl formal, polyacetal, polyvinyl butyral, nylon 6.6, 6,6・Polyamides such as Jo and 12 and their derivatives, polyethylene terephthalate,
Polyesters such as polybutylene terephthalate (・, polyethylene terephthalate-polyethylene glycol block copolymer) and its derivatives, polyvinyl chloride and its copolymers, polyvinylidene chloride and its copolymers, polymethyl methacrylate Ray-1, acrylic ester copolymers, polycarbonate, polysulfone,
Examples include rubbers such as styrene-butadiene block copolymers, thermoplastic polyurequins, polybutadiene/, polyisopL//, acrylonitrile-butadiene copolymers, and polyphosphacenes.

A preferable thermoplastic polymer is one in which the polymer sulfonate and/or polymer sulfonic acid, which is the conductive substance of the present invention, migrates to the surface of the molded product after the three components are mixed and molded. l) Polyolefins or copolymerized polyolefins such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ethylene-methacrylic acid copolymer, ethylene ionomer, and their derivatives. .

More preferable thermoplastic polymers include dispersibility of polymeric sulfonic acid salts and/or polymeric sulfonic acids, transparency when the composition of the present invention is molded into films, sheets, etc., and heat-release properties. Among them, ethylene ionomers having ethylene and α,β-ethylenically unsaturated carboxylic acids and α,β-ethylenically unsaturated carboxylic acid metal salts are praised.

Next, to explain the ethylene ionomer, in the present invention, the ethylene ionomer refers to ethylene and α
, β-ethylenically unsaturated carboxylic acid and α,β-ethylenically unsaturated carboxylic acid metal salt, and if necessary, an α,β-ethylenically unsaturated carboxylic acid ester is further added thereto.

a) α,β-Ethylenically unsaturated carboxylic acid refers to a monomer having 3 to 8 carbon atoms such as acrylic acid, methacrylic acid, itaconic acid, fumaric acid, maleic acid, and monomethyl itaconate. These acid type polymers may be used singly in the polymer, or two or more types may be used in combination.

b) Carbo/acid in the α,β-ethylenically unsaturated carboxylic acid metal salt belongs to the above a), and metal ions include Ll, , Na, K, Cs
Monovalent metal ions such as Mg, Ca + Sr,
Ba.

→→−]→+ 1−++ ” + Divalent metal ions such as Zr1, Al,
Examples include trivalent metal ions such as li'e. Among them, Na
.

→−→ Mg, Ca, and Zn ions are preferred. Alternatively, it may be a mixture of two or more metal ions.

C) α, β-Ethylenically unsaturated carboxylic acid esters include methyl acrylate, ethyl acrylate, methyl methacrylate, butyl methacrylate, dimethyl fumarate,
A monomer having 4 to 8 carbon atoms such as monoethyl maleate.

The ratio of the composition type remains of the above-mentioned ionic ethylene co-vehicle combination is preferably as shown below. That is, the ethylene content is 7
5 to 995 mol%, preferably 85 to 99 mol%, of the group -C represented by the following formula. - monomer) 05-25
The proportions of carboxylic acid groups and carboxylic acid ester groups in mol%, preferably 1 to 15 monomers, are:
The former is 15 to 100 mol%, preferably 30 to 100 mol%, and the latter is 0 to 85 mol%, preferably 0 to 70 mol%. In the carboxylic acid group, the proportion of the carboxylic acid metal base in the free carboxylic acid groups and the carboxylic acid metal base is 1 mol% or more, preferably 10 mol% or more.

Next, a method for producing the above ethylene copolymer will be illustrated. One method is to copolymerize ethylene, α, β-ethylenically unsaturated carboxylic acid, and optionally α, β-ethylenically unsaturated carboxylic acid ester according to the method for producing high-pressure polyethylene. There is a method in which an ionic metal compound is applied to a copolymer. Another method is to completely or partially hydrolyze a copolymer of ethylene and α,β-ethylenically unsaturated carboxylic acid ester with an alkali, and then release a part of the metal salt of the carboxylic acid produced. There is also a method of converting it into a carboxylic acid. There is also a method in which polyethylene is graft-polymerized with an α,β-ethylenically unsaturated carboxylic acid and, if necessary, an α,β-ethylenically unsaturated carboxylic acid ester, and further treated with an ionic metal compound.

The thermoplastic polymer composition of the present invention can be produced by using a powder or aqueous solution of a polymeric sulfonic acid salt and/or a polymeric sulfonic acid, and an organic compound having a sulfonic acid group and/or a sulfonic acid group. A method of mixing an organic compound having an acid metal base with a thermoplastic polymer and heating and melting the mixture is preferable.There are various methods of mixing each component, but each component can be mixed by ordinary melt mixing using a Pan Bali mixer, an extruder, etc. The mixture thus obtained can be mixed using a conventional melt molding method such as a T-die film forming method, a tubular film forming method, an extrusion method, a roll rolling method, an injection molding method, etc. It can be a film, a sheet or a molded article.

A feature of the polymer composition according to the present invention is that the organic compound having a sulfonic acid group and/or the organic compound having a sulfonic acid metal group is added, so that the polymer sulfonic acid and/or polymer sulfonate is extremely uniform. The objective is to achieve a good antistatic effect by being dispersed in the liquid, to shorten the time it takes to develop the effect, and to maintain the effect for a long period of time. In addition, the mechanical properties of the composition are not deteriorated at all, or are so small that it is generally accepted. There is no difference in practical use, and it is irreplaceable.
It is a composition.

Since the film, sheet or molded article formed from the composition has a surface resistivity of 10,130 or less, various N
'It is useful as a product that requires protection against I-electronics.

In particular, since the film is transparent or translucent, it is extremely useful as a packaging material that allows the contents to be confirmed.

The final product form of the composition of the present invention can be various molded products such as radios, television cases, electrical parts, Fuming appliance parts, plastic containers, films, sheets, foams, filaments, stables, textile products such as cloth, etc. , self-discipline paper, and all other items that require anti-static properties.

The compositions, films, and sheets of the present invention may contain commonly known additives, as long as they do not impair their properties.
For example, antioxidants, ultraviolet deterioration inhibitors, weathering agents, antiblocking agents, normal phase agents, slip agents, plasticizers, and the like may be contained.

Further, in addition to the organic compound having a sulfonic acid group and/or the organic compound having a sulfonic acid group of the present invention, a water-soluble thermoplastic polymer or a polyhydric alcoholic compound having a hydroxyl group may be added as a compound.

Examples of water-soluble thermoplastic polymers having hydroxyl groups include polyvinyl alcohol with a saponification degree of 30 to 70 mol%, hydroquinlovir cellulose with a propylene oxide addition rate of 25 or more, hydroxyethyl cellulose with an ethylene oxide addition rate of 20 or more, and methyl Examples include cellulose derivatives having two or more substituents such as hydroquinlopylcellulose. Moreover, there is no particular restriction on the molecular weight. Examples of polyhydric alcoholic compounds include fats such as 1,2-ethanediol, I,3-propanediol, 1,2-propanediol, 1,4-butanediol, 1,6-hexanediol, glycerin, and pentaerythritol. group polyhydric alcohols, cyclic polyhydroxy compounds such as cyclohexanediol, and glucose,
D-xylose, ■)-norhitol, fructose,
Examples include natural polyhydric alcohols such as mannitol.

The present invention will be explained in more detail with reference to Examples below, where parts in the Examples and Comparative Examples are based on weight. Physical properties were measured by the following method.

(1) Two samples were placed under the conditions of surface resistivity temperature of 23°C and relative humidity of 50%.
These values were measured using a super insulation resistance meter (manufactured by Takeda Riken Co., Ltd.) under the same conditions after storage for 4 hours.

(2) Yield strength and breaking strength Films were measured by the method of JIS Z1702, and sheets were measured by the method of ASTM D4]2.

(3) Haze level ASi, 'MD 1003 Example 1 To 30 parts of a 130% aqueous solution of sulfonation degree 60 mol % and thorium nopolystyrene sulfonate (trade name Oligo 2, manufactured by Tagawa Paper Mills), oleyl methyl tauric acid was added. A mixed solution containing 9 parts of l-IJum was mixed with 100 parts of a magnesium-type ionomer of ethylene-methacrylic acid copolymer (methacrylic acid content: 345 mol%, degree of neutralization of magnesium ions: 25 mol%), and a biaxial The mixture was melted and mixed using an extruder to form pellets.

Next, a film with a thickness of 100 μm was manufactured by an inflation film forming method. Table 1 shows the physical properties of this film. The surface resistivity remained stable for 6 months without any change.

Comparative Example 1 The ionomer resin used in Example 1 was formed into a film and its physical properties were measured. Table IK shows the results. Surface resistivity is 1016
No anti-static effect was observed above Ω.

Comparative Example 2 9 parts of thorium oleylmethyltaurate was added to 100 parts of the ionomer '3f fat used in Example 1,
A film with a thickness of 100 μm was produced in the same manner as in Example 1. The physical properties of this film are not shown in Table 1.

Comparative Example: 3 30 parts of a 30% aqueous solution of sodium polystyrene sulfonate with a degree of sulfonation of 60 mol% was added and mixed to 100 parts of the ionomer resin used in Example 1, and a film with a thickness of 100μ7n was formed in the same manner as in Example 1. Manufactured. Table 1 shows the physical properties of this film.

The surface specific resistance value changes over time, reaching 8 x 108Ω after 2 weeks.
and then remained constant.

Table 1 Example 2 A mixture of 30 parts of sodium dodecylbenzenesulfonate to 80 parts of a 30% aqueous solution containing potassium nopholystyrene sulfonate with a degree of sulfonation of 60 mol% was added to a sodium-type ionomer of ethylene-methacrylic acid copolymer. (methacrylic acid content 67 mol%, sodium ion neutralization degree 3
5 mol %) and melt-mixed in a twin-screw extruder to form pellets. Next, a film with a thickness of 100 μm was manufactured by an inflation film forming method. Table 2 shows the physical properties of this film.

A sheet having a thickness Q of 5 mm obtained by compression molding the above composition had a surface resistivity of 2×10 8 Ω. In addition, by heat deep drawing this sheet, it has a diameter of 3 cm,
A molded product with a hole 2 cm deep and with uneven thickness was made.

Comparative Example 4 The ionomer resin used in Example 2 was used alone to form a film with a thickness of 100 μm. Table 2 shows the physical properties of this film. The surface resistivity was 10160 or more, and no antistatic effect was observed.

Comparative Example 5 30 parts of sodium dodecylbenzenesulfonate was added to 100 parts of the ionomer resin used in Example 2 and mixed,
A film having a thickness of 11,001 t was produced in the same manner as in Example 2. Table 2 shows the physical properties of this film.

Comparative Example 6 80 parts of a 30% aqueous solution of potassium polystyrene sulfonate with a degree of sulfonation of 60 mol% was added and mixed to 100 parts of the ionomer resin used in Example 2, and a film with a thickness of 100 μm was produced in the same manner as in Example 2. did. Table 2 shows the physical properties of this film. The surface resistivity value changes over time, and 5
It showed an I x 108°Ω after 1 day and remained constant thereafter.

Table 2 Example 3 30% aqueous solution of sodium polystyrene sulfonate with a degree of sulfonation of 60 mol% (trade name: Oligo Z).

A mixture of 4 parts (manufactured by Tagawa Paper Mill) and 2 parts of sodium tetradecyl sulfonate was added to low density polyethylene 100
The mixture was mixed in a double screw extruder to obtain a melt-mixed siehelet.

Next, a film with a thickness of 50 μm was manufactured by an inflation film forming method. Table 3 shows the physical properties of this film.

The surface resistivity remained stable for 6 months without changing.

Comparative Example 7 A film of J, 17 and 50711++ was produced by forming a film using only the low density polyethylene used in Example 3. Table 3 shows the physical properties of this film. Surface resistivity is 1016
Ω or more (no antistatic effect was observed at t'I).

Comparative Example 8 2 parts of sodium tetradecylbenzenesulfonate were added to 100 parts of the low-density polyethylene used in Example 3 and mixed, and a film having a thickness of 5 Q li+a was produced in the same manner as in Example 3. Table 3 shows the physical properties of this film.

Comparative Example 9 4 parts of a 30% aqueous solution of sodium polystyrene sulfonate (degree of sulfonation 60 mol%) was added and mixed to 100 parts of the low density polyethylene used in Example 3, and a film with a thickness of 50 μm was prepared in the same manner as in Example 3. was manufactured. Table 3 shows the physical properties of this film.

The surface resistivity did not change over 6 months.

Table 3 Example 4 20% aqueous solution 2 of a copolymer with a weight ratio of sodium styrene sulfonate and sodium fumarate of 80:20
A mixture of 5 parts and 3 parts of sodium 2-acrylamido-2-methylpropanesulfonate was dried to form a powder. This powder was added to and mixed with 100 parts of plasticized polyvinyl chloride resin, and the film was formed into a film with a thickness of 3 cm using the inflation film forming method.
A film of Q 1 (m) was manufactured. This film had a surface resistivity of 5 x 108 Ω, a haze level of 5%, and a yield strength of 230
kg/cm2. Note that the surface resistivity of the plasticized polyvinyl chloride used in this example alone was 7 × 1 o
': Ω, haze 5%, and breaking strength 250 kg/cm2.

Example 5 Soft detergent 9 was added to 50 parts of a 30% aqueous solution of sodium polystyrene sulfonate with a degree of sulfonation of 60 mol%.
5 [Lion@], mixture of α-olefin sodium sulfonate and hydroxyalkyl sodium sulfonate 31
After adding and mixing 2 parts, the mixture was dehydrated to obtain a powder. The powder 2
7 parts were added to 100 parts of nylon-6 resin, melt-mixed to form pellets, and then an injection molding machine was used to produce a sheet with a thickness of 3 mm. This sheet has a surface resistivity of 3×10
It had a yield strength of 8Ω and a yield strength of 750 kg/cm2. In addition,
The surface resistivity of nylon-6 used in this example alone is I
X] o'', Q, yield strength was 8ook Am2te.

Applicant: Asahi Dow Co., Ltd.

Claims (1)

[Claims] 1. (a) 100 parts of a thermoplastic polymer; (L)) a general formula (wherein R is hydrogen or a methyl group; M is hydrogen, an alkali metal, an alkaline earth metal, or ammonium); and
R1, R2, R3, and R4 are each the same or different from each other and are hydrogen, ), rogene, an alkyl group, or an alkoxyl group. c) A polymer composition comprising 0.1 to 40 parts by weight of an organic compound having a sulfonic acid group and/or an organic compound having a sulfonic acid metal group. 2. The composition according to claim 1, wherein the thermoplastic polymer is an ethylene ionomer containing ethylene, an α,β-ethylenically unsaturated carboxylic acid, and a metal salt of an α,β-ethylenically unsaturated carboxylic acid. thing. 3, (a) 100 parts by weight of a thermoplastic polymer, (b) general formula (wherein R is hydrogen or a methyl group, -M is hydrogen, an alkali metal, an alkaline earth metal, or ammonium, R3, R2,几., R4 are each the same or different from each other and are hydrogen, halogen, alkyl group or alkoxyl group) 01-3゜parts by weight k, (,,-)sulfone Organic compounds having acid groups and/or organic compounds having sulfonic acid metal bases 0, 1 to 4
An IE film, sheet, or molded product consisting of a 0-heavy portion and having an inherent surface resistance of 1013Ω or less. 4. Charging according to claim 3, wherein the thermoplastic polymer is an ethylene ionomer containing ethylene, an α,β-ethylenically unsaturated carboxylic acid, and a metal salt of an α,β-ethyleno-type saturated carboxylic acid. Prevention film, sheet or molded product.