JPH02255752A - Composition - Google Patents

Abstract

PURPOSE:To provide a composition containing an ethylene-vinyl alcohol copolymer and a deodorizing agent, having extremely excellent odor-barrierness and useful especially as a film for artificial anus bag. CONSTITUTION:The objective composition is produced by compounding (A) an ethylene-vinyl alcohol copolymer having an ethylene unit content of 20-50mol% (preferably 27-40mol%), a saponification degree of vinyl acetate unit of >=96% and a melt index of 0.2-60g/10min (190 deg.C, 2,160g) or a blend of the copolymer and another resin with (B) >=0.1wt.% of a deodorizing agent selected from Zn compound, Al compound, Si compound, Fe(II) compound and organic acid, preferably zinc silicate, etc., having amorphous structure and, as necessary, (C) 5-40wt.% (based on A+C) of an ethylenic copolymer resin containing 2-25mol% of a component selected from vinyl acetate and (meth) acrylic acid ester.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Product No. 1 The present invention relates to a composition exhibiting extremely excellent odor barrier properties.

B. Willill Examples of PlusDeck films that require barrier properties against odorous substances include films for colostomy bags, films for garbage and other malodorous waste, and films for preservation packaging of seafood, fruits, vegetables, etc. It will be done.

Conventionally, single-layer films such as low-density polyethylene and soft polyvinyl chloride have been used as films for colostomy bags. However, single-layer films made of polyethylene, soft vinyl chloride, or the like do not have sufficient odor barrier properties, and the odor of the contents leaks out while the device is being worn, causing discomfort to the person. Therefore, a film with odor barrier properties that does not leak the odor of the contents to the outside is desired. Therefore, ethylene-vinyl alcohol copolymer (hereinafter referred to as EVO), which has odor barrier properties, is used.
It has been proposed to use a multilayer film containing polyvinylidene chloride resin (denoted as H) or a polyvinylidene chloride resin as a barrier layer. A method of using EVOH as a barrier layer in a colostomy bag is found in Utility Model Application Publication No. 175248/1983, but EVOH
OH has somewhat insufficient barrier properties against low-molecular-weight amines such as ammonia, and a colostomy bag using EVO)I as an odor barrier layer is not currently in practical use. The method using polyvinylidene chloride resin is described in Japanese Patent Publication No. 57-501.
As can be seen in JP-A No. 631-137368, the odor barrier properties of polyvinylidene chloride-based colostomy bags currently on the market are not sufficiently satisfactory, and improvements in odor barrier properties are desired.

Also, JP-A No. 61-60732 and JP-A No. 61-14
8236 describes a plastic film containing a composition (deodorizing agent) consisting of an iron (Ii) compound and an organic acid, and JP-A-62-86031 describes a resin molding containing an organic acid (deodorizing agent). Showa 62-235363,
JP 62-235364, JP 82-235365
describes a resin composition containing a composition (deodorizer) consisting of a zinc compound and an organic acid.

However, there is a limit to the amount of odors that deodorizers can deodorize, and it is difficult to completely block out the odors of odorous substances. Furthermore, until now, no combination of EVOH and a deodorizing agent has been known.

Problems to be Solved by C1 As mentioned above, there has been a desire for materials, especially plastic films, that exhibit extremely excellent barrier properties against many odor components contained in odorous substances.

D: If the odor barrier layer used was EVOH alone, the odor barrier properties would not be sufficient, and sufficient odor barrier properties could not be obtained as a film for a colostomy bag.

However, it was surprisingly discovered that a film made of a composition containing EVOH and a deodorizing agent has a perfect odor barrier property against most odor components, and furthermore, a film containing a layer of this composition is particularly effective against artificial odor components. The present invention was completed after confirming that the film was useful as a film for anal bags. As described above, a film made of a composition containing EV 01-1 and a deodorizing agent is a revolutionary new material that has high barrier properties against various odors in addition to films for colostomy bags.

Although it is not fully clear why the film made of the composition of the present invention has such excellent odor barrier properties, EVO
It is understood that H and the deodorizing agent have a synergistic relationship in blocking various malodorous components.

The present invention will be explained in more detail below.

E V OH (A) used in the present invention includes any one obtained by hydrolyzing vinyl acetate units in a copolymer of ethylene and vinyl acetate, but
In particular, the content of ethylene units is 20 to 50 mol%, especially 27 to 40 mol%, and the degree of saponification of vinyl acetate units is 96% or more, especially 9
9% or more, and the melt index (19
0℃, 2taog) value is 0.2 to 60g/lo
A range of minutes is exemplified. Further, the EVOH referred to in the present invention may be modified with a copolymerizable monomer in a range of 5 mol% or less, and such modifying monomers include propylene,
1-butene, 1-hexene, 4-methyl-1-pentene,
Acrylic ester, methacrylic ester, maleic acid, fumaric acid, itaconic acid, higher fatty acid vinyl ester, alkyl vinyl ether, N-(2-dimethylaminoethyl) methacrylamide or its quaternized product, N
Examples include -vinylimidazole or its quaternized product, N-vinylpyrrolidone, N,N-butquine methylacrylamide, vinyltrimethoxinelan, vinylmethyldimethoxysilane, vinyldimethylmethoxysilane, and the like.

The deodorizing agent (B) used in the present invention includes various malodorous components, including: ammonia, trimethylamine, acetaldehyde, hydrogen sulfide, methyl mercaptan, methyl sulfide, methyl disulfide, styrene, phenol, n-valeric acid, -It is a substance that has a deodorizing effect on valeric acid, etc.
There are no particular restrictions on the type, but examples include organic acids, iron (II) compounds, zinc compounds, aluminum compounds, silicon compounds, and iron (II) compound-organic acid compositions. Further, these deodorizing agents can be used alone or as a composition of multiple types.

Examples of the zinc compound include zinc silicate, zinc oxide, zinc sulfate, zinc chloride, zinc phosphate, zinc nitrate, zinc carbonate, zinc acetate, zinc oxalate, zinc citrate, zinc fumarate, zinc formate, and the like.

In addition, aluminum compounds include aluminum sulfate,
Examples include aluminum phosphate, aluminum silicate, and potassium aluminum sulfate.

Examples of the silicon compound include silicon phosphate compounds such as silicon dioxide, silicon orthophosphate, silicon birophosphate-1 type, and silicon birophosphate-2 type, and activated silica gel.

Further, as the iron (II) compound, any compound can be used as long as it forms divalent iron ions.

Examples include iron(II) inorganic salts such as ferrous sulfate, ferrous chloride, ferrous nitrate, ferrous bromide, ferrous iodide, ferrous gallate, ferrous malate, Iron (such as ferrous fumarate)
II) Organic salts are mentioned, and among these, ferrous sulfate and ferrous chloride are preferred.

Compositions of zinc compounds and silicon compounds are also preferably used. A specific example of this composition is zinc silicate, which has a mostly amorphous structure and has a ratio of zinc oxide to silicon dioxide in the range of 1:5 to 5:1 by weight. Substantially amorphous fine particles are preferred. The ratio of zinc oxide to silicon dioxide is preferably in the range of 1:4 to 4:1, more preferably in the range of 1:3 to 3:1.

Also preferably used is a composition of a zinc compound and an aluminum compound. Specific examples of this composition include zinc oxide and/or zinc carbonate and aluminum sulfate and/or
or a mixture of potassium aluminum sulfate is preferred;
1 part aluminum compound to 100 parts by weight zinc compound
~1000 parts by weight, preferably 30-300 parts by weight.

The organic acids are preferably organic acids having 8 or more carbon atoms, such as aliphatic monocarboxylic acids, aliphatic polycarboxylic acids, aromatic monocarboxylic acids, and aromatic polycarboxylic acids, with aromatic carboxylic acids being particularly preferred. Examples of aromatic polycarboxylic acids include phthalic acid, terephthalic acid, isophthalic acid,
Trimellitic acid, 1.2.3-benzenetricarboxylic acid, 1,3.5-benzenetricarboxylic acid, pyromellitic acid, benzenehexacarboxylic acid, naphthalenedicarboxylic acid, naphthalenetricarboxylic acid, naphthalenetetracarboxylic acid, diphenyltetracarboxylic acid , diphenylethertetracarboxylic acid, azobenzenetetracarboxylic acid, or anhydrides thereof, among which benzenetricarboxylic acid, particularly trimellitic acid, is preferred.

Iron (II) compounds - iron (■) used in organic acid compositions
Any compound can be used as long as it dissolves in water to form divalent iron ions as described above. Examples include ferrous sulfate, ferrous chloride, ferrous nitrate,
Examples include iron(II) inorganic salts such as ferrous bromide and ferrous iodide, and iron(II) organic salts such as ferrous gallate, ferrous malate, and ferrous fumarate. Of these, ferrous sulfate and ferrous chloride are preferred.

The organic acid used in the iron (II) compound-organic acid composition may be any organic acid that is soluble in water. Examples include carboxylic acids such as lactic acid, tartaric acid, malic acid, and among these, L-ascorbic acid is preferred.

In the iron (II) compound-organic acid composition used in the present invention, it is preferable that both components are bonded together. , can be prepared by powdering. The component ratio of iron (U) compound and organic acid is l:Q, (11 to 1.(
The range is preferably 1, more preferably 1:0.02
~0.80. When the organic acid component is ascorbic acids, the ratio of the iron (If) compound to the organic acid is preferably in the range of 1:0.02 to 0.30 by weight, more preferably 1:0.02 to 0.013, particularly preferably is 1
: In the range of 0.05 to 0.13. In the present invention, two or more types of iron (II) compounds or two or more types of organic acids may be used in combination. Further, it is preferable to add alum to the iron (II) compound-organic acid composition as a stabilizer for the deodorizing function in an amount of 2 to 20% by weight based on the total amount of the iron (II) compound and the organic acid.

There are no particular restrictions on the alum, but potassium alum, ammonia alum, and sodium alum are suitable.

Furthermore, as other deodorizing agents, compositions in which metal compounds are stabilized, such as compositions consisting of zinc compounds and polycarboxylic acids, bioenzyme model compounds such as iron (DI)-phthalocyanine derivatives, thorn, holly, and osmanthus , tree sap or extracted components of plants such as Japanese butterbur, Japanese butterbur, lilac, Chinese alder, chestnut, alder, aluminum such as zeolite, hydrous magnesium silicate clay minerals such as silicates, sepiolite, white tile, palygorskite, and raffinite, activated humic acid, Activated alumina, activated carbon, etc. can also be used.

Among the above deodorizing agents, zinc compounds such as zinc oxide and zinc sulfate, silicon compounds such as silicon dioxide and silicon orthophosphate, aluminum compounds such as aluminum sulfate and potassium aluminum sulfate, compositions of zinc compounds and silicon compounds, and zinc compounds and a composition of aluminum compounds,
Furthermore, organic acids and iron(II) compound-organic acid compositions are particularly preferred.

The content of the deodorizer depends on the blended resin (EVOHl or E
041% by weight based on blends of VOH with other resins)
Above, preferably 0.2 to 50% by weight, more preferably 0
．． 5 to 1G% by weight. If less than 0.1% by weight, the EV
The synergistic effect of odor barrier properties in combination with OH becomes insufficient.

In the present invention, the EVOH deOH composition can be obtained by blending it with EVOH in advance using a Banbury mixer 1 short shaft or two-wheel screw extruder, Brabender Plastograph, etc., or by directly feeding it to various molding machines. A method of molding while mixing and compacting in a molding machine, a method of producing a high-concentration master pellet with a single-pressing machine, diluting it to about 1710 and performing melt extrusion molding, and a method of adding a deodorizer (especially An example of this method is to mix fine powder of deodorizing agent and then form a film using a casting method.

Further, in the composition of the present invention, particular flexibility may be required. For example, in the case of a colostomy bag, there is a demand for a film that does not cause discomfort when it comes into contact with the skin, does not produce noise due to bending or abrasion of the film while being worn, and does not allow others to notice that the bag is being worn. Furthermore, in applications where the film is subject to vibration or bending, a film with pinhole resistance is required.

In such cases, flexibility can be imparted by blending EVOH with a flexible resin or copolymerizing other monomers. Ethylene copolymer resin (hereinafter referred to as blend resin) containing 2 to 25 mol% of at least 6-component selected from vinyl acetate, acrylic ester and methacrylic ester in E V OH (A) (C ) is preferred because it improves flexibility. If the comonomer content of the blend resin is less than 2 mol %, the softening effect of EVOH will be poor, and if it exceeds 25 mol %, the thermal stability will be poor when blended with EVOH, and there will be a tendency for the blend layer to develop bubbles. Undesirable. Examples of acrylic esters copolymerized with ethylene include methyl acrylate, ethyl acrylate,
Propyl acrylate, butyl acrylate, acrylic acid 2
Examples include -ethylhexyl, dodecyl acrylate, eicosyl acrylate, etc., with methyl acrylate and ethyl acrylate being preferred, and ethyl acrylate being particularly preferred. In addition, examples of methacrylic esters copolymerized with ethylene include methyl methacrylate, ethyl methacrylate, propyl methacrylate, butyl methacrylate, 2-ethylhexyl methacrylate, dodecyl methacrylate, and eicosyl methacrylate. Methyl methacrylate and ethyl methacrylate are preferred, and methyl methacrylate is particularly preferred. Two or more types of these comonomers can also be used. Further, a third comonomer other than those mentioned above may be freely used as long as flexibility is not impaired. Further, the flexibility becomes better as two or more types of ethylene-vinyl acetate copolymer, ethylene-acrylic acid ester copolymer, or ethylene-methacrylic acid ester copolymer are simultaneously EVOHed. A preferred composition that has both odor barrier properties, gas barrier properties, and flexibility in a well-balanced manner is 60 to 95% by weight of EV OH (A) and blend resin (C) based on the total amount of (A) and (C). It ranges from 40 to 5% by weight. More preferably, EVOH (A) is 65 to 80% by weight, blend tree 11
1(C) is in the range of 35 to 20% by weight. The blending method of EVOH and blend resin is Banbury mixer 1.
There is a method using a single screw or twin screw extruder, a Brabender blastograph, etc., but each component may also be directly fed to various molding machines and molded while being kneaded by the molding machine. Furthermore, when kneading these, other additives (various resins, heat stabilizers, antioxidants, plasticizers, colorants, etc.) may be used as long as the effects of the present invention are not impaired. . As the thermal stabilizer, hydrotalcite compounds and compounds are particularly effective. Such additives are E
When VOH is used alone, it can be blended, and it can also be blended with other materials that make up the eyebrows.

The composition of the present invention may be used as a film with the composition as a single layer, but it may also be used as a multilayer structure (e.g. film) with a protective layer on one or both sides of the composition layer. This is often the case and is preferable. The protective layer here refers to the EVOH layer that provides a high level of odor barrier properties, as well as superior strength, flexibility, and moisture resistance.
It imparts heat-sealability, and protective materials include thermoplastic resins, particularly hydrophobic thermoplastic resins, paper, nonwoven fabrics, and cloth.

By the way, thermoplastic resins are not particularly limited, but include polyolefins such as low-density polyethylene, high-density polyethylene, linear low-density polyethylene, polypropylene, ethylene-propylene copolymer, polybutene, and ethylene-vinyl acetate copolymer. , ethylene-ethyl acrylate copolymer, copolymer mainly composed of olefins such as ionomer, and other thermoplastic resins with good heat-sealability are preferred; other examples include polyethylene terephthalate, and poly refers to the resin forming the protective layer. Young's modulus of a single layer film. Examples of the resin that provides the above-mentioned physical properties include low density polyethylene, linear low density polyethylene, ultra low density polyethylene, ethylene-vinyl acetate copolymer, ethylene-acrylic acid ester copolymer, or ethylene-methacrylic acid ester copolymer. Bonate, polyamide, polystyrene,
Examples include polyvinyl chloride. If polyethylene terephthalate or polyamide is used as the gas barrier resin, a material with different properties from polyethylene terephthalate or polyamide, such as better heat sealability or flexibility, should be used as the thermoplastic resin. It is preferable to choose.

When used in colostomy bags, etc. that require flexibility, as mentioned above, a blended resin is blended with the gas barrier resin to impart flexibility, and as a protective layer, Young's modulus at 20°C is added. It is preferable to use a thermoplastic resin layer having a Young's modulus of 2.5 kg/ms'' or less, particularly in the range of 0.1 to 2 kg/mai'. Here, examples include Young's modulus polymers for the protective layer, especially those having a vinyl acetate content of 5 to 45% by weight. % ethylene-vinyl acetate copolymer, containing acrylic ester j15
~45% by weight ethylene acrylic ester copolymer,
Alternatively, an ethylene-methacrylic ester copolymer with a methacrylic ester content of 5 to 45% by weight is preferable, and more preferably an ethylene-vinyl acetate copolymer with a vinyl acetate content of 10 to 30% by weight, an acrylic ester content of 4
It is an ethylene-acrylic ester copolymer having a content of 10 to 30% by weight, or an ethylene-methacrylic ester copolymer having a methacrylic ester content of 10 to 30% by weight. Slip agents and antiblocking agents for polyolefins can be added to these resins as necessary. Ethylene-vinyl acetate copolymer, -369 = If the acetate component, acrylate component, or methacrylate component of the ethylene-acrylic ester copolymer or ethylene-methacrylic ester copolymer is less than 5% by weight, multilayer The flexibility of the film is somewhat poor, and if it exceeds 45% by weight, the surface slip properties will be poor, and even with the addition of a slip agent or anti-blocking agent, satisfactory slip properties cannot be obtained.

As for the layer structure, the protective layer is P% and the EVOH composition layer is G,
When the deodorizer is D, P/D-containing G1 P/D-containing G/
P, D containing G/D containing G, D containing P/D containing G/P%D
Examples include containing P/D containing G/D containing P. Further, an adhesive resin, which will be described later, can be appropriately provided between each layer.

The thickness of the film or multilayer structure (film) made of the composition of the present invention is not particularly limited, but usually EVOH
The composition layer is 3-50μ, preferably 5-30μ, the protective layer, especially the protective layer containing the deodorizer, is 5-300μ, preferably 5-150μ, the total thickness is 20-500μ, preferably 60-200μ. It is.

Examples of methods for obtaining a multilayer structure using the composition of the present invention include coextrusion, extrusion lamination, dry lamination, and sand lamination.

When obtaining a multilayer structure, if the interlayer adhesion between the EVOH composition layer and the protective layer is insufficient, it is preferable to use an adhesive or provide an adhesive resin IN II.

The adhesive resin is not particularly limited as long as it does not cause delamination in the practical stage, but in the coextrusion method, polyolefin polymers such as polyethylene, ethylene-α-olefin copolymer, ethylene-
Vinyl acetate copolymer (vinyl acetate content 45% by weight or less)
, chemically (e.g., addition reaction,
A modified polyolefin copolymer obtained by bonding (by graft reaction) is preferably used. These adhesive resins can be added to either of the layers or both shoulders instead of being placed between the eyebrows.

The present invention will be explained in more detail below with reference to Examples.

Dan-m Example 1 Ethylene content is 32 mol%, saponification degree is 99%, 190
ASTM D 123 at 2160m load
E V OH4:n with a melt index (hereinafter referred to as Ml) of 4.5 g/10 minutes measured according to 1165T
-Dissolved in a solvent of propatool/water = 65/35 (weight ratio) at 20°C.

Next, a fine powder of zinc silicate having an amorphous structure (weight ratio of zinc oxide and silicon dioxide is 1:3, particle size is 5 microns or less on average) is added to the dissolved resin (EVOH) at a ratio of 3.
The mixture was added to the above solution in an amount of % by weight, stirred and mixed vigorously, and then a single layer film of EVOH with a thickness of 10 μm was obtained by a casting method.

Next, a vinyl acetate-containing product with a thickness of 30μ was obtained using an l-screw extruder.
! A multilayer film was obtained by placing 28% by weight ethylene-vinyl acetate copolymer film on both sides of the above EVOH film by dry lamination using a two-component polyester adhesive.

Regarding the obtained multilayer film, the membrane surface, oxygen gas permeation amount (
OTR), odor barrier properties, flexibility, wearing comfort, and noise properties were evaluated as follows.

The amount of oxygen gas permeation is measured using Modern Control 1.
The measurement was carried out using OX-TRAN 10-50A manufactured by Co., Ltd. at 20°C and relative humidity of 65%. In addition, the evaluation of odor permeability, flexibility, wearing comfort, and noise resistance was 140+ag.
+X 300mm laminated film, 140
A bag was used in which one side of mm and two sides of 3001 m were heat-sealed with a width of 5 mm. Odor permeability evaluation: 20℃, relative humidity 6
Place the odor substance in a bag in a room controlled at 5% and seal the bag using heat sealing. Place the bag in a wide mouth bottle with a capacity of 5001, stopper it, and leave it at 20℃ and 65% relative humidity for 24 hours. The odor inside the wide-mouthed bottle was evaluated using a 5-point sensory test. As the odor substances, Ig skatole and 5 cc of 25% ammonia aqueous solution were used.

In addition, as for flexibility, feeling of wearing, and noise resistance, this film had very good film surface and odor barrier properties, as shown in Table 1.

Example 2 The procedure was the same as in Example 1 except that a fine powder consisting of zinc oxide and alum (average particle size of 10 microns or less) was used in place of the fine zinc silicate powder in a weight ratio of 5:1 (weight ratio). A single-layer film of EVOH with a thickness of lOμ was obtained by a casting method, and an ethylene-vinyl acetate copolymer film was laminated on both sides of this EVOH film using a two-component curing polyester adhesive to form a multilayer film. I got it. The obtained multilayer film was evaluated in the same manner as in Example 1. As shown in the evaluation results in Table 1, this film had very good film surface and odor barrier properties, as well as good flexibility, wearing comfort, and noise resistance.

Example 3 70 parts by weight of an ethylene-vinyl acetate copolymer containing 28% by weight of vinyl acetate units and zinc silicate having an amorphous structure (the weight ratio of zinc oxide and di-silicon oxide was 1=3, and the particle size was average Fine powder of 5 microns or less) 30f (41 parts) was pelletized using a twin-screw extruder to obtain master pellets of zinc silicate.

70 parts by weight of EVOH with an ethylene content of 32 mol%, a saponification degree of 99%, an MI of 4.5 g/lo, an ethylene content of 89 mol%, a vinyl acetate content of 11 mol%, an MI of 6
．． An intermediate layer with a thickness of 10 μm consisting of a blend of 20 parts by weight of 0g/10 min ethylene-vinyl acetate copolymer and 10 parts by weight of the zinc silicate master pellet; , vinyl acetate content 28% by weight
It has a surface layer made of ethylene-vinyl acetate copolymer with a thickness of 5μ between each layer, a maleic anhydride-modified ethylene-vinyl acetate copolymer with a vinyl acetate content of 20% by weight and a maleic anhydride content of 0.5% by weight. A multilayer film with a total thickness of 70 μm, which was disposed through an adhesive resin layer consisting of a combination, was obtained by a coextrusion method using three extruders and a 3N5-layer multilayer die head.

As the composition of the intermediate layer, a pellet which had been blended in advance using an extruder was used.

The obtained multilayer film was evaluated in the same manner as in Example 1. As shown in the evaluation results in Table 1, this film had very good film surface and odor barrier properties, as well as good flexibility, wearing comfort, and noise resistance.

Comparative Example 1 A 10 μm polyvinylidene chloride film was obtained using a uniaxial extruder, and a multilayer film of 5 layers of 3 types was obtained by dry lamination in the same manner as in Example 1, except that this film was used as an intermediate layer.

The obtained film was evaluated in the same manner as in Example 1. As shown in the evaluation results in Table 1, this film had insufficient odor barrier properties.

Comparative Example 2 The single-layer film of EV OH used in Example 1 (containing no deodorizer) was obtained using a l-screw extruder. A multilayer film of three types and five layers was obtained by the dry lamination method in the same manner as in Example 1 except that this film was used as the intermediate layer.

The obtained film was evaluated in the same manner as in Example 1. As shown in the evaluation results in Table 1, this film had insufficient odor barrier properties.

Comparative Example 3 A monolayer film with a thickness of 70 μm was obtained using an ethylene-vinyl acetate copolymer having a vinyl acetate content of 28% by weight using a uniaxial extruder. The obtained film was evaluated in the same manner as in Example 1. As shown in the evaluation results in Table 1, this film had poor odor barrier properties.
1% lower margin F, effect of the invention The film obtained from the composition of the invention, especially the multilayer film, exhibits extremely excellent barrier properties against odorous substances, and is particularly useful as a film for colostomy bags, and is also useful as a film for colostomy bags. It can be used as an odor barrier feed material for garbage and other malodorous waste materials, preservation packaging materials for seafood, fruits, vegetables, etc., and materials for packaging corpses.

Patent applicant RiRashi Co., Ltd.

Claims (4)

[Claims] (1) A composition containing an ethylene-vinyl alcohol copolymer (A) having an ethylene content of 20 to 50 mol% and a deodorizing agent (B). (2) 2 to 25 moles of an ethylene-vinyl alcohol copolymer (A) having an ethylene content of 20 to 50 mol%, a deodorizing agent (B), and at least one component selected from vinyl acetate, acrylic ester, and methacrylic ester; % of the ethylene copolymer resin (C). (3) Add 5 to 4 of (C) to the total amount of (A) and (C).
3. The composition of claim 2, comprising 0% by weight. (4) Claims 1 to 3 wherein the deodorizing agent is a composition of one or more compounds selected from zinc compounds, aluminum compounds, silicon compounds, iron (II) compounds, and organic acids.
The composition described in any of the above.