WO2022195843A1 - 再生樹脂組成物の製造方法 - Google Patents

再生樹脂組成物の製造方法 Download PDF

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Publication number
WO2022195843A1
WO2022195843A1 PCT/JP2021/011343 JP2021011343W WO2022195843A1 WO 2022195843 A1 WO2022195843 A1 WO 2022195843A1 JP 2021011343 W JP2021011343 W JP 2021011343W WO 2022195843 A1 WO2022195843 A1 WO 2022195843A1
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Prior art keywords
resin composition
raw material
mass
layer
recycled resin
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English (en)
French (fr)
Japanese (ja)
Inventor
忠志 立浪
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Kao Corp
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Kao Corp
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Priority to JP2023506661A priority patent/JPWO2022195843A1/ja
Publication of WO2022195843A1 publication Critical patent/WO2022195843A1/ja
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethylene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04—Homopolymers or copolymers of esters
    • C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
    • C08L33/08—Homopolymers or copolymers of acrylic acid esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04—Homopolymers or copolymers of esters
    • C08L33/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen

Definitions

  • the present invention relates to a recycled resin composition, a molded article of the recycled resin composition, a packaging material containing the molded article, a container containing the molded article, and a method for producing these.
  • thermoplastic composites and/or laminated materials are formed, for example, into bottles, refillable pouches, and the like. These materials may be composed of completely different types of films, inorganics such as aluminum, inks, etc. for functional reasons. Therefore, when packaging materials and the like made of these materials are recovered and the resins are recycled, the materials contain unmelted materials such as ink and inorganic substances, and polymers incompatible with the main component polymer.
  • Patent Document 1 in order to obtain a recycled plastic material or the like having high physical properties, a plurality of types of polymers, at least one of which is used, are reacted with an oxazoline-based compatibilizer, an elastomer-based compatibilizer, and A sheet-like or film-like molded article composed of a plastic material containing at least one kind of compatibilizing agent selected from the group consisting of a sexual compatibilizing agent and a copolymer-based compatibilizing agent is disclosed.
  • the present invention relates to the following [1] to [6].
  • [1] Melting of a resin composition raw material containing one or more selected from the group consisting of a polyamide-containing resin composition raw material for regeneration and a polyamide-containing recycled resin composition raw material, and a compound that reacts with an amine.
  • a method for producing a recycled resin composition comprising a kneading step, wherein the recycled resin composition has an amine value of 5 or less.
  • a method for producing a molded body comprising the step of molding the recycled resin composition obtained by the production method according to [1].
  • [3] Manufactured from a resin composition raw material containing one or more selected from the group consisting of a polyamide-containing resin composition raw material for regeneration and a polyamide-containing recycled resin composition raw material, containing a polyamide and an amine A recycled resin composition having a value of 5 or less.
  • a packaging material comprising the film of [4].
  • [6] A container containing the film described in [4].
  • a recycled resin composition having excellent seal strength between films when films are prepared a method for producing the same, a molded article of the recycled resin composition and a method for producing the same, a packaging material containing the molded article, A container containing the molded article can be provided.
  • FIG. 3 shows a film of embodiment 3
  • the sealing strength between the films may be low, and further improvement is required.
  • the present invention provides a recycled resin composition that exhibits excellent sealing strength between films when films are prepared, a method for producing the same, a molded product of the recycled resin composition, a method for producing the same, a packaging material containing the molded product, and the molded product. Relating to a container containing a body.
  • the present inventors newly discovered that when a film is prepared using a recycled resin composition containing polyamide as a raw material, the sealing strength between the films is significantly reduced. Furthermore, the inventors have newly found that a film having excellent seal strength can be prepared by using a recycled resin composition having an amine value of a specific value or less. Although this mechanism is not clear, it is presumed that the amount of amine transferred to the adhesive surface is suppressed.
  • the method for producing a recycled resin composition of the present invention comprises a resin composition raw material containing at least one selected from the group consisting of a polyamide-containing resin composition raw material for recycling and a polyamide-containing recycled resin composition raw material. , a melt-kneading step with a compound that reacts with the amine.
  • a resin composition raw material for recycling means a resin composition recovered from used products, factory waste materials, or the like as a raw material.
  • Recycled resin composition raw materials are materials made from recycled resin compositions such as mechanically recycled resins and chemically recycled resins obtained by melt-kneading after being collected from used products and factory waste materials.
  • the resin composition for regeneration (raw material) and the recycled resin composition (raw material) may be collectively referred to as "recycled resin (raw material)".
  • Examples of the recycled resin raw material used in the melt-kneading process include various resin compositions containing polyamide, such as compositions containing resins such as polyolefin resins, polyester resins, and polyurethane resins. Among these, compositions containing polyolefin resins, polyester resins, etc. as main components are preferred from the viewpoint of promoting the recycling of resins that are widely used as packaging materials.
  • polyolefin resins examples include polyethylene (PE resin) and polypropylene (PP resin). Among these, it is preferable to contain polyethylene as a main component from the viewpoint of promoting regeneration of resins that are widely used as packaging materials.
  • the content of the polyolefin resin in the recycled resin raw material (that is, the total amount of the resin composition raw material for recycling and the recycled resin composition raw material) is preferably 50% by mass or more, more preferably 75% by mass, from the viewpoint of adhesiveness. It is at least 85% by mass, more preferably at least 85% by mass, and preferably at most 99% by mass, more preferably at most 97% by mass, and even more preferably at most 95% by mass from the viewpoint of promoting regeneration.
  • the content when two or more kinds of polyolefin resins are contained is the total amount of the polyolefin resins.
  • polyester resins include polyethylene terephthalate (PET resin), polytrimethylene terephthalate (PTT resin), polybutylene terephthalate (PBT resin), polyethylene naphthalate (PEN resin), polybutylene naphthalate (PBN resin), and the like. .
  • PET resin polyethylene terephthalate
  • PBT resin polytrimethylene terephthalate
  • PEN resin polyethylene naphthalate
  • PBN resin polybutylene naphthalate
  • the content of the polyester resin in the recycled resin raw material is preferably 1% by mass or more, more preferably 2% by mass or more, and still more preferably 3% by mass or more from the viewpoint of promoting regeneration. , preferably 25% by mass or less, more preferably 20% by mass or less, and still more preferably 15% by mass or less.
  • the content when two or more kinds of polyester resins are contained is the total amount of the polyester resins.
  • a recycled resin raw material and a new resin raw material may be used in combination. More preferably, only the raw material is used. That is, the content of the recycled resin raw material in the resin composition raw material is preferably 50% by mass or more, more preferably 75% by mass or more, and still more preferably 90% by mass or more, from the viewpoint of promoting regeneration of the resin. Preferably it is 100% by mass. The content when two or more kinds of recycled resin raw materials are contained is the total amount of the recycled resin raw materials.
  • the content of the polyamide in the resin composition raw material in the melt-kneading step is preferably 0.01% by mass or more, more preferably 1% by mass or more, and still more preferably 3% by mass or more, from the viewpoint of promoting regeneration, and , from the viewpoint of adhesion, it is preferably 30% by mass or less, more preferably 20% by mass or less, and still more preferably 15% by mass or less.
  • Compounds that react with amines include compounds with carbonyl groups and epoxy groups. Examples thereof include ethylene-glycidyl methacrylate (E-GMA), maleic anhydride-modified polyethylene (MAH-PE), ethylene-acrylic acid copolymer and the like.
  • E-GMA ethylene-glycidyl methacrylate
  • MAH-PE maleic anhydride-modified polyethylene
  • ethylene-acrylic acid copolymer ethylene-acrylic acid copolymer and the like.
  • the amount of the compound that reacts with amine in the melt-kneading step is preferably 5 parts by mass or more, more preferably 10 parts by mass or more, from the viewpoint of reducing the amine value with respect to 100 parts by mass of the polyamide in the raw material of the resin composition. , more preferably 30 parts by mass or more, and from the viewpoint of moldability, it is preferably 90 parts by mass or less, more preferably 80 parts by mass or less, and even more preferably 70 parts by mass or less.
  • the content is the total amount of the compounds that react with amines.
  • raw materials containing various additives as necessary are stirred with a Henschel mixer or the like, or mixed with a closed kneader, a single-screw or twin-screw extruder, an open-roll kneader, or the like.
  • the kneading treatment can be performed using a known kneader.
  • the melting temperature is preferably 120° C., more preferably 150° C. or higher, and even more preferably 180° C. or higher from the viewpoint of improving the rigidity, heat resistance, and appearance of the molded product. , preferably 280° C. or lower, more preferably 250° C. or lower.
  • the production method of the present invention further includes steps such as a step of collecting used resin, a step of separating, a step of crushing/pulverizing, and a step of washing, if necessary. good too.
  • the recycled resin composition obtained by the production method of the present invention contains polyamide.
  • the amine value of the recycled resin composition obtained by the production method of the present invention is 5 or less, preferably 3 or less, more preferably 2 or less, and still more preferably 1 or less, from the viewpoint of seal strength. .
  • the amine value is measured according to the method described in Examples below.
  • the recycled resin composition of the present invention is produced from a resin composition raw material containing at least one selected from the group consisting of a polyamide-containing resin composition raw material for recycling and a polyamide-containing recycled resin composition raw material, It contains polyamide and has an amine value of 5 or less.
  • the type and amount of resin contained in the recycled resin composition of the present invention, the content of polyamide, the amine value, etc. are the same as those in the production method described above.
  • the recycled resin composition of the present invention can be prepared by the production method of the present invention. However, as long as it is prepared using the resin composition raw material, it is prepared by other production methods. may be
  • the recycled resin composition of the present invention When a film is prepared from the recycled resin composition of the present invention, it is excellent in sealing strength between the films, so that it can be suitably used by forming it into a film.
  • the recycled resin composition of the present invention can also be used as various molded articles such as sheets, fibers, filaments, blow molded articles and injection molded articles.
  • a laminate sheet forming method by co-extrusion processing or extrusion lamination processing using the recycled resin composition of the present invention is particularly effective, and the laminate sheet thus obtained can be suitably used.
  • the molded article can be prepared by a known molding process using the recycled resin composition of the present invention as a raw material.
  • a preferred embodiment of the method for producing a molded article includes a production method comprising a step of molding the recycled resin composition obtained by the production method of the present invention.
  • a preferred embodiment of the molded article is a film having a layer (A) made of a resin composition containing the recycled resin composition of the present invention.
  • the resin composition for layer (A) may be molded using only the recycled resin composition of the present invention as a raw material, or may optionally contain other resins, known additives, and the like.
  • layers may be arbitrarily laminated to form a multilayer structure.
  • EVOH ethylene-vinyl alcohol copolymer having an elastic modulus of 2000 MPa or more, preferably 3000 MPa or more, more preferably 4000 MPa or more % or more of the resin composition and has a laminated structure of the layer (A) and the layer (B).
  • the upper limit of the elastic modulus of the EVOH can be, for example, 10000 MPa or less. In this specification, the elastic modulus of EVOH is measured according to ISO527 and JISK7161.
  • EVOH can be obtained by a known method such as saponification of an ethylene-vinyl acetate copolymer.
  • Commercially available EVOH having an elastic modulus of 2000 MPa or more include “EVAL F171B” (manufactured by Kuraray Co., Ltd.), “ Soarnol D” (manufactured by Mitsubishi Chemical Corporation) or the like can be used.
  • the content of EVOH having an elastic modulus of 2000 MPa or more in the resin composition for the layer (B) is preferably 50% by mass or more, more preferably 55% by mass or more, and still more preferably 60% by mass, from the viewpoint of gas barrier properties. From the viewpoint of interlayer adhesion, the content is preferably 90% by mass or less, more preferably 80% by mass or less.
  • the resin composition for the layer (B) may optionally contain EVOH having an elastic modulus of 2000 MPa or more, a compound having a polar group and a polyolefin (excluding EVOH having an elastic modulus of 2000 MPa or more), and the like. .
  • Examples of polar groups in compounds having polar groups and polyolefins include organic isocyanate groups, (anhydrous) carboxylic acid groups, carboxylic acid halide groups, amino groups, hydroxy groups, epoxy groups, and ester groups.
  • Examples of polyolefins include ethylene-based polymers [high-density polyethylene, medium-density polyethylene, low-density polyethylene, ethylene and one or more other vinyl compounds (eg, ⁇ -olefin, vinyl acetate, methacrylic acid, acrylic acid, etc.).
  • copolymers, etc.] propylene-based polymers [polypropylene, copolymers of propylene and one or more other vinyl compounds, etc.], ethylene-propylene copolymers, polybutene, poly-4-methylpentene-1, etc. be done.
  • compounds having a polar group and a polyolefin include maleic anhydride-modified polyethylene (MAH-PE), ethylene-glycidyl methacrylate copolymer, vinyl acetate, vinyl acetate-acrylic copolymer, and ethylene-vinyl acetate copolymer having an elastic modulus of less than 2000 MPa.
  • examples include saponified polymers.
  • the laminated structure of the layer (A) and the layer (B) may be directly laminated without containing an interlayer adhesive between the layer (A) and the layer (B), or It may be laminated via an agent (adhesive resin layer).
  • interlayer adhesives examples include compounds having a polar group and polyolefin (excluding EVOH with an elastic modulus of 2000 MPa or more), compounds having urethane bonds, and the like, and one or more of them can be used. Details of the compound having a polar group and polyolefin are the same as described above.
  • Examples of compounds having urethane bonds include polyurethane compounds obtained from polyol compounds (polyester polyol, polyester polyurethane polyol, polyether polyurethane polyol, etc.) and isocyanate compounds (tolylene diisocyanate, 4,4'-diphenylmethane diisocyanate, hexamethylene diisocyanate, etc.). compound and the like.
  • the content of the interlayer adhesive is preferably 5 mass from the viewpoint of interlayer adhesion with respect to 100 parts by mass of the resin constituting the film. parts or more, more preferably 10 parts by mass or more, still more preferably 15 parts by mass or more, and from the viewpoint of cost, preferably 50 parts by mass or less, more preferably 40 parts by mass or less, and even more preferably 30 parts by mass or less.
  • the "resin constituting the film” refers to two layers of resin laminated via an interlayer adhesive.
  • the content of the interlayer adhesive in a film laminated as layer (A1)/interlayer adhesive/layer (B)/layer (A2) is the total amount of resin of layer (A1) and layer (B) 100 parts by mass.
  • FIG. 3 Another preferred embodiment (embodiment 3) is a film 1 having a structure in which layer (A) 2, layer (B) 3, and layer (A) 4 are laminated in this order (Fig. 1).
  • the resin compositions of layer (A) 2 and layer (A) 4 may be the same or different.
  • the presence or absence and amount of the interlayer adhesive between the layers may be the same or different.
  • the thickness of the film is preferably 0.01 mm or more, more preferably 0.02 mm or more, and still more preferably 0.03 mm or more from the viewpoint of workability, and is preferably 0.03 mm or more from the viewpoint of reducing environmental load. 0.7 mm or less, more preferably 0.2 mm or less, still more preferably 0.15 mm or less, still more preferably 0.1 mm or less, and even more preferably 0.08 mm or less.
  • the film of each of the above aspects has excellent sealing strength, so it can be suitably used for packaging materials, containers, and the like.
  • examples include a container that constitutes an air circuit of an AFB (Air in Film Bottle) that uses air pressure and a pouch that has an air circuit for holding. be done.
  • AFB Air in Film Bottle
  • the film of each aspect described above can be produced by a known method such as an extrusion molding method or an inflation molding method using the resin compositions of the layers (A) and (B).
  • the present invention further discloses the following method for producing a recycled resin composition.
  • ⁇ 2> The production method according to ⁇ 1>, wherein the recycled resin composition has an amine value of preferably 3 or less, more preferably 2 or less, and still more preferably 1 or less.
  • ⁇ 3> ⁇ 1> or ⁇ 2> wherein the polyamide content in the resin composition raw material is preferably 0.01% by mass or more, more preferably 1% by mass or more, and still more preferably 3% by mass or more.
  • ⁇ 4> ⁇ 1> to ⁇ 3>, wherein the polyamide content in the resin composition raw material is preferably 30% by mass or less, more preferably 20% by mass or less, and still more preferably 15% by mass or less. Production method.
  • ⁇ 5> The production method according to any one of ⁇ 1> to ⁇ 4>, wherein the compound that reacts with an amine includes a compound having one or more groups selected from the group consisting of a carbonyl group and an epoxy group.
  • ⁇ 6> The production method according to any one of ⁇ 1> to ⁇ 5>, wherein the compound that reacts with amine includes any one of ethylene-glycidyl methacrylate, maleic anhydride-modified polyethylene, and ethylene-acrylic acid copolymer.
  • the amount of the compound that reacts with the amine in the melt-kneading step is preferably 5 parts by mass or more, more preferably 10 parts by mass or more, and still more preferably 30 parts by mass with respect to 100 parts by mass of the polyamide in the raw material of the resin composition.
  • the amount of the compound that reacts with the amine in the melt-kneading step is preferably 90 parts by mass or less, more preferably 80 parts by mass or less, and still more preferably 70 parts by mass with respect to 100 parts by mass of the polyamide in the raw material of the resin composition.
  • the production method according to any one of ⁇ 1> to ⁇ 7> which is not more than parts by mass.
  • ⁇ 9> The production method according to any one of ⁇ 1> to ⁇ 8>, wherein in the melt-kneading step, the melt temperature is preferably 120°C, more preferably 150°C or higher, and still more preferably 180°C or higher.
  • the melt-kneading step the kneading is performed at a melting temperature of preferably 280°C or lower, more preferably 250°C.
  • the resin composition raw material for recycling or the recycled resin composition raw material contains, as a main component, one or more selected from the group consisting of polyethylene (PE resin) and polypropylene (PP resin) ⁇ 1> to ⁇ 10>
  • the content of the polyolefin resin in the total amount of the resin composition raw material for regeneration and the recycled resin composition raw material is preferably 50% by mass or more, more preferably 75% by mass or more, and still more preferably 85% by mass or more.
  • the content of the polyolefin resin in the total amount of the resin composition raw material for regeneration and the recycled resin composition raw material is preferably 99% by mass or less, more preferably 97% by mass or less, and still more preferably 95% by mass or less.
  • the resin composition raw material for recycling or the recycled resin composition raw material includes polyethylene terephthalate (PET resin), polytrimethylene terephthalate (PTT resin), polybutylene terephthalate (PBT resin), polyethylene naphthalate (PEN resin), and The production method according to any one of ⁇ 1> to ⁇ 13>, containing as a main component one or more selected from the group consisting of polybutylene naphthalate (PBN resin).
  • the content of the polyester resin in the total amount of the resin composition raw material for regeneration and the recycled resin composition raw material is preferably 1% by mass or more, more preferably 2% by mass or more, and still more preferably 3% by mass or more.
  • the content of the polyester resin in the total amount of the resin composition raw material for regeneration and the recycled resin composition raw material is preferably 25% by mass or less, more preferably 20% by mass or less, and still more preferably 15% by mass or less.
  • the content of the resin composition raw material for regeneration and the recycled resin composition raw material in the resin composition raw material is preferably 50% by mass or more, more preferably 75% by mass or more, and still more preferably 90% by mass or more.
  • ⁇ 18> Any one of ⁇ 1> to ⁇ 17>, further comprising one or more steps selected from the group consisting of a step of collecting used resin, a step of separating, a step of crushing/pulverizing, and a step of washing. manufacturing method.
  • ⁇ 19> A method for producing a molded body, comprising a step of molding the recycled resin composition obtained by the production method according to any one of ⁇ 1> to ⁇ 18>.
  • ⁇ 20> The manufacturing method according to ⁇ 19>, wherein the molded article is a film, sheet, fiber, filament, blow-molded article, or injection-molded article.
  • ⁇ 21> Manufactured from a resin composition raw material containing one or more selected from the group consisting of a polyamide-containing resin composition raw material for regeneration and a polyamide-containing recycled resin composition raw material, contains a polyamide, and has an amine value of 5.
  • the recycled resin composition is as follows. ⁇ 22> The recycled resin composition according to ⁇ 21>, wherein the amine value is preferably 3 or less, more preferably 2 or less, and still more preferably 1 or less. ⁇ 23> ⁇ 21> or ⁇ 22>, wherein the polyamide content in the resin composition raw material is preferably 0.01% by mass or more, more preferably 1% by mass or more, and still more preferably 3% by mass or more. Recycled resin composition.
  • the content of the ethylene-vinyl alcohol copolymer having an elastic modulus of 2000 MPa or more in the resin composition for the layer (B) is preferably 50% by mass or more, more preferably 55% by mass or more, and still more preferably 60% by mass.
  • the content of the ethylene-vinyl alcohol copolymer having an elastic modulus of 2000 MPa or more in the resin composition for the layer (B) is preferably 90% by mass or less, more preferably 80% by mass or less.
  • ⁇ 29> Any of ⁇ 25> to ⁇ 28>, wherein the resin composition for the layer (B) further contains a compound having a polar group and a polyolefin (excluding an ethylene-vinyl alcohol copolymer having an elastic modulus of 2000 MPa or more)
  • ⁇ 30> The film according to any one of ⁇ 25> to ⁇ 29>, having a structure in which the layer (A), the layer (B), and the layer (A) are laminated in this order.
  • ⁇ 31> The film according to any one of ⁇ 25> to ⁇ 30>, further comprising an interlayer adhesive between the layer (A) and the layer (B).
  • the interlayer adhesive contains one or more selected from the group consisting of a compound having a polar group and a polyolefin (excluding an ethylene-vinyl alcohol copolymer having a modulus of elasticity of 2000 MPa or more) and a compound having a urethane bond. , the film according to any one of ⁇ 25> to ⁇ 31>.
  • the compound having a polar group and a polyolefin is maleic anhydride-modified polyethylene (MAH-PE), ethylene-glycidyl methacrylate copolymer, vinyl acetate, vinyl acetate-acrylic copolymer, and ethylene vinyl acetate having an elastic modulus of less than 2000 MPa.
  • the film according to any one of ⁇ 25> to ⁇ 32> which is at least one selected from the group consisting of saponified copolymers.
  • the compound having a urethane bond is a polyurethane compound obtained from a polyol compound (polyester polyol, polyester polyurethane polyol, polyether polyurethane polyol, etc.) and an isocyanate compound (tolylene diisocyanate, 4-4'diphenylmethane diisocyanate, hexamethylene diisocyanate, etc.).
  • a polyol compound polyester polyol, polyester polyurethane polyol, polyether polyurethane polyol, etc.
  • an isocyanate compound tolylene diisocyanate, 4-4'diphenylmethane diisocyanate, hexamethylene diisocyanate, etc.
  • the content of the interlayer adhesive is preferably 5 parts by mass or more, more preferably 10 parts by mass or more, and still more preferably 15 parts by mass or more with respect to 100 parts by mass of the resin constituting the film.
  • the content of the interlayer adhesive is preferably 50 parts by mass or less, more preferably 40 parts by mass or less, and still more preferably 30 parts by mass or less with respect to 100 parts by mass of the resin constituting the film.
  • ⁇ 37> The film according to any one of ⁇ 25> to ⁇ 36>, having a thickness of preferably 0.01 mm or more, more preferably 0.02 mm or more, and even more preferably 0.03 mm or more.
  • ⁇ 38> ⁇ 25>- ⁇ 37> The film according to any one of the above.
  • ⁇ 39> The film according to any one of ⁇ 25> to ⁇ 38>, which is used for packaging materials or containers.
  • the packaging material or the container is a container that forms an air circuit of an AFB (Air in Film Bottle) that uses air pressure or a pouch that has an air circuit for gripping. the film.
  • AFB Air in Film Bottle
  • a packaging material comprising the film according to any one of ⁇ 25> to ⁇ 40>.
  • a container comprising the film according to any one of ⁇ 25> to ⁇ 40>.
  • ⁇ 43> ⁇ 25> to ⁇ 40> A pouch having an air circuit for gripping or a container constituting an air circuit of an AFB (Air in Film Bottle) using air pressure, comprising the film according to any one of ⁇ 25> to ⁇ 40>.
  • AFB Air in Film Bottle
  • Recycled resin Recycled polyethylene resin (manufactured by Iwai Kasei Co., Ltd., composition: 80% polyethylene, 10% polyamide, 10% polyester)
  • MAH-PE Admer HE810 (manufactured by Mitsui Chemicals)
  • E-GMA Bond Fast BF-E (manufactured by Sumitomo Chemical Co., Ltd.)
  • the layer (A) made of the recycled resin composition having an amine value of 5 or less was excellent in seal strength. Moreover, unexpectedly, the interlayer adhesion strength between the layers (B) and (C) was also excellent.
  • the recycled resin composition of the present invention can be suitably used for packaging materials, containers, and the like.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
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PCT/JP2021/011343 2021-03-19 2021-03-19 再生樹脂組成物の製造方法 Ceased WO2022195843A1 (ja)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017057463A1 (ja) * 2015-10-02 2017-04-06 三菱瓦斯化学株式会社 多層容器及びその製造方法、単層容器の製造方法、並びに、再生ポリエステル樹脂の製造方法
JP2020158698A (ja) * 2019-03-27 2020-10-01 花王株式会社 再生樹脂組成物
JP2020158699A (ja) * 2019-03-27 2020-10-01 花王株式会社 再生樹脂組成物の製造方法
JP2021024137A (ja) * 2019-07-31 2021-02-22 株式会社クラレ 多層構造体及びそれを用いた回収方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017057463A1 (ja) * 2015-10-02 2017-04-06 三菱瓦斯化学株式会社 多層容器及びその製造方法、単層容器の製造方法、並びに、再生ポリエステル樹脂の製造方法
JP2020158698A (ja) * 2019-03-27 2020-10-01 花王株式会社 再生樹脂組成物
JP2020158699A (ja) * 2019-03-27 2020-10-01 花王株式会社 再生樹脂組成物の製造方法
JP2021024137A (ja) * 2019-07-31 2021-02-22 株式会社クラレ 多層構造体及びそれを用いた回収方法

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