WO2012099357A2 - Composition de mousse biodégradable pour semelle contenant de l'acide polylactique, et son procédé de préparation - Google Patents

Composition de mousse biodégradable pour semelle contenant de l'acide polylactique, et son procédé de préparation Download PDF

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WO2012099357A2
WO2012099357A2 PCT/KR2012/000253 KR2012000253W WO2012099357A2 WO 2012099357 A2 WO2012099357 A2 WO 2012099357A2 KR 2012000253 W KR2012000253 W KR 2012000253W WO 2012099357 A2 WO2012099357 A2 WO 2012099357A2
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parts
weight
polylactic acid
copolymer
foam composition
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PCT/KR2012/000253
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English (en)
Korean (ko)
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WO2012099357A3 (fr
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최경만
백인규
김영민
박재형
이지은
한동훈
임대휘
최인철
손관식
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(주)컴테크케미칼
한국신발피혁연구소
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Publication of WO2012099357A2 publication Critical patent/WO2012099357A2/fr
Publication of WO2012099357A3 publication Critical patent/WO2012099357A3/fr

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B1/00—Footwear characterised by the material
    • A43B1/0063—Footwear characterised by the material made at least partially of material that can be recycled
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/38—Built-in insoles joined to uppers during the manufacturing process, e.g. structural insoles; Insoles glued to shoes during the manufacturing process
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
    • A43B17/10—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined specially adapted for sweaty feet; waterproof
    • A43B17/102—Moisture absorbing socks; Moisture dissipating socks
    • A43B17/105—Disposable
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
    • A43B17/14—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined made of sponge, rubber, or plastic materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2409/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
    • C08J2409/06—Copolymers with styrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/08—Copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2453/00—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
    • C08J2453/02—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers of vinyl aromatic monomers and conjugated dienes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

Definitions

  • the present invention relates to a biodegradable foam composition for shoe soles using polylactic acid and a method for preparing the same. More specifically, a large amount of polylactic acid is mixed with a mixed substrate composed of a polylactic acid and a copolymer mixture of biodegradable resin.
  • the present invention relates to a biodegradable foam composition for shoe soles using a polylactic acid, characterized by high biodegradability, and excellent durability and hardness.
  • biodegradable resins that are hydrolyzed or degraded by microorganisms when they are buried in soil after use are attracting attention.
  • various types of biodegradable resins have been developed and expanded to develop fibers, films and other industrial materials using the same.
  • Plastic foams made of general petrochemical products such as polystyrene, polyvinyl chloride, foams using polyolefin resins or polyurethane resins, have been widely used because of their excellent lightness, heat insulation, moldability, and buffering properties.
  • these resin foams although lightweight, are virtually impossible to recycle because they are bulky when discarded and are difficult to reuse and produce products by crosslinking.
  • such resin foams have a low recyclability and are mostly incinerated after use. In this case, harmful substances such as dioxin are generated, and problems such as discharge of environmental hormones are included. Even though it is buried in the soil, it remains semipermanently, so it is difficult to secure a waste disposal site by incineration or landfill, causing pollution to the global environment.
  • biodegradable polymers and molded products thereof that decompose in the natural environment are required, and research on biodegradable resins such as aliphatic polyesters is being actively conducted.
  • polylactic acid (PLA) resin is a biodegradable resin based on starch. It has a small amount of heat generated by combustion, is easily hydrolyzed in soil or water, and is converted into water and carbon dioxide by soil microorganisms. Since it is completely decomposed, it does not have to go through a separate disposal process such as incineration or recycling, and it can be called an environmentally friendly resin. In addition, since the melting point is sufficiently high at 120 to 180 ° C., and shows excellent high rigidity and transparency, it is used in various industrial fields, especially molded articles requiring manufacturing and transparency of disposable cups, containers, packaging materials, cushioning materials, automotive interior materials, and the like. have.
  • the base material is a polylactic acid mixed with a large amount of biodegradable resin in a mixture of ethylene vinyl acetate copolymer, styrene isoprene styrene copolymer and ethylene methyl acrylic acid copolymer
  • a rubber additive such as a crosslinking agent and a foaming agent to foam molding of the shoe sole foam at high temperature / high pressure
  • the biodegradability is high by the biodegradable resin contained in the substrate, and the durability and hardness are excellent by the copolymer mixture.
  • An object of the present invention is to provide a biodegradable foam composition for shoe soles using a polylactic acid and a method for producing the same.
  • the present invention is manufactured through a processing process of primarily master batching the substrate in a twin-screw compressor, so that the biodegradable resin is applied at a high content while foam molding is possible under high temperature / high pressure, which is a conventional foam molding method for shoes.
  • the biodegradable resin can not only improve biodegradability but also satisfy the durability of the biodegradable resin as a material for shoe soles.
  • the present invention provides a biodegradable foam composition for shoe soles made of a polylactic acid mixed substrate,
  • the mixed substrate consists of a mixture of polylactic acid and a copolymer
  • the present invention provides a biodegradable foam composition for shoe soles using polylactic acid, comprising 2 parts by weight and 1 to 10 parts by weight of calcium carbonate.
  • the polylactic acid is 20 to 60 parts by weight based on 100 parts by weight of the mixed base material
  • the copolymer mixture is 10 to 60 parts by weight of ethylene vinyl acetate copolymer, 5 to 30 parts by weight of styrene isoprene styrene copolymer, 5 to 25 parts by weight of ethylene methacrylate copolymer, based on 100 parts by weight of the mixed substrate,
  • the plasticizer is a hydroxycarboxylic acid ester plasticizer
  • the crosslinking agent is used alone or in combination with an organic peroxide crosslinking agent or an epoxy crosslinking agent,
  • the blowing agent may be used alone or in combination with an azodicarbonamide blowing agent or a dinitrosopentamethylenetetraamine blowing agent.
  • the present invention is a method for producing a biodegradable foam composition for shoe soles using polylactic acid, 20 to 60 parts by weight of polylactic acid, 10 to 60 parts by weight of ethylene vinyl acetate copolymer, styrene isoprene styrene copolymer 5 to 30 parts by weight, 5 to 25 parts by weight of the ethylene methacrylic acid copolymer are mixed, and a master batch is prepared (S1) under a temperature condition of 180 to 200 ° C. through a twin screw extruder, and the substrate prepared by the above master batch.
  • the hardness and durability of the ethylene vinyl acetate copolymer, the styrene isoprene styrene copolymer and / or the ethylene methylacrylic acid copolymer are mixed with a polylactic acid-based substrate mixed with a large amount of biodegradable resin.
  • This excellent sole foam can be manufactured, and in particular, the foam composition for shoe soles to which the conventional biodegradable resin is applied contains less than 20 parts by weight of the biodegradable resin with respect to 100 parts by weight of the base material, and thus the effect of substantial biodegradability.
  • the present invention enables the use of a high content of biodegradable resin, thereby improving the biodegradability and having the effect of satisfying the hardness and durability as a material for shoe soles.
  • the present invention relates to a biodegradable foam composition for shoe soles using a polylactic acid to achieve the above effects, and a method for manufacturing the same. Only those parts necessary for understanding the technical configuration of the present invention are described. Note that it will be omitted so as not to distract the subject matter.
  • biodegradable foam composition for shoe soles using the polylactic acid in accordance with the present invention and a manufacturing method thereof will be described in detail.
  • the present invention provides a biodegradable foam composition for shoe soles made of a polylactic acid mixed substrate,
  • the mixed substrate consists of a mixture of polylactic acid and a copolymer
  • plasticizer 1 to 10 parts by weight of plasticizer, 1 to 10 parts by weight of silane coupling agent, 0.1 to 1.5 parts by weight of crosslinking agent, 2 to 5 parts by weight of blowing agent, 1 to 10 parts by weight of metal oxide, 0.5 to stearic acid, based on 100 parts by weight of the mixed substrate. It is characterized by comprising 2 parts by weight, 1 to 10 parts by weight of calcium carbonate.
  • the polylactic acid is mixed with 20 to 60 parts by weight based on 100 parts by weight of the mixed base.
  • Polylactic acid (polylactic acid) used in the present invention is a polyester synthesized by condensation polymerization of lactiate, and has a medium physical property between polyamide and polyethylene terephthalate (PET). Natural vegetable sugars obtained from potatoes and corn are used as raw materials, so biodegradability is high. However, due to the high hardness, low elasticity, and low durability, a large amount of polylactic acid cannot be used when foams are manufactured alone.
  • an ethylene vinyl acetate copolymer, a styrene isoprene styrene copolymer and an ethylene methacrylic acid acid are used to suppress the increase in hardness caused by the use of a large amount of polylactic acid. It is characterized by using a mixture of copolymers.
  • the amount of polylactic acid to be used is preferably 20 to 60 parts by weight, biodegradation performance is lower than 20 parts by weight or less, it is difficult to form a foam at 60 parts by weight or more, hardness for use as a material for shoe weight There is a high problem.
  • the amount of polylactic acid used is more preferably 30 to 50 parts by weight.
  • the copolymer mixture is 10 to 60 parts by weight of ethylene vinyl acetate copolymer, 5 to 30 parts by weight of styrene isoprene styrene copolymer, and 5 to 25 parts by weight of ethylene methacrylate copolymer based on 100 parts by weight of the mixed substrate. It is preferable.
  • the ethylene vinyl acetate copolymer is a resin that is widely used for shoe soles due to its excellent compressive strain, impact absorption rate, mechanical strength, etc., and when the amount of the ethylene vinyl acetate copolymer is less than 10 parts by weight, the compressive strain, The impact absorption rate, mechanical strength, etc. may be lowered, and when it exceeds 60 parts by weight, the biodegradability may be lowered as the amount of polylactic acid is relatively decreased.
  • the styrene isoprene styrene copolymer is a resin having excellent properties such as flexibility and resilience.
  • the amount of the styrene isoprene styrene copolymer used is less than 5 parts by weight, the properties such as flexibility and repulsive force may be deteriorated.
  • it exceeds 30 parts by weight the tearing strength of the foam decreases, and the appearance of the product may be deteriorated due to the deterioration of the flowability of the compound.
  • the ethylene methacrylic acid copolymer is generally a resin having high strength and excellent adhesiveness when melted, and when the amount of the ethylene methacrylic acid copolymer used is less than 5 parts by weight, the foam may be unstable. If the part is exceeded, adhesiveness occurs in the processing equipment, which may cause problems in uniform mixing or workability.
  • the plasticizer used in the present invention is a hydroxycarboxylic acid ester plasticizer, tributyl acetyl citrate, triethyl acetyl citrate, tributyl It is used alone or in combination in tributyl citrate, 1 to 10 parts by weight based on 100 parts by weight of the base material, when the content of the plasticizer exceeds 10 parts by weight of the mechanical strength and hardness is lowered Problems may arise.
  • the silane coupling agent used in the present invention is a vinyl silane (vinyl trichloro silane, vinyl trimethoxy silane, vinyl triethoxy silane), epoxy silane ( ⁇ -glycidoxypropylmethyldiepoxy silane, ⁇ -gly) Cidoxypropyltrimethoxy silane, ⁇ -glycidoxypropyltriethoxy silane), amino silane ( ⁇ -aminopropyltrimethoxy silane, ⁇ -aminopropyltriethoxy silane), methacryloxy silane ( ⁇ - Methacryloxypropyltriethoxy silane, ⁇ -methacryloxypropyltrimethoxy silane), chloropropyl silane ( ⁇ -chloropropyltriethoxy silane), mercapto silane ( ⁇ -mercaptopropyltrimethoxy silane ) Is used alone or in combination, and 1 to 10 parts by weight with respect to 100 parts by weight of the base material, there is a problem
  • the silane coupling agent is effective to improve the moldability of the foam when using 20 to 60 parts by weight of the polylactic acid as a substrate.
  • the crosslinking agent used in the present invention is preferably used alone or in combination with an organic peroxide crosslinking agent or an epoxy crosslinking agent, and the organic peroxide crosslinking agent is 2,5-bis (tertbutylperoxy) -2,5-dimethyl-3.
  • the blowing agent used in the present invention is preferably used alone or in combination with an azodicarbonamide blowing agent or a dinitrosopentamethylenetetraamine blowing agent, using 2 to 5 parts by weight based on 100 parts by weight of the substrate, If the amount used is less than 2 parts by weight, the foam density is high, and there is no foaming effect. If the amount is used more than 5 parts by weight, the molding of the foam is not smooth and it can be applied as a shoe insole due to a big problem in durability. There will be no.
  • additives that are typically used in foam for footwear is preferably used 1 to 10 parts by weight of metal oxide, 0.5 to 2 parts by weight of stearic acid, 1 to 10 parts by weight of calcium carbonate based on 100 parts by weight of the substrate, which Typically referred to as the range used in the composition of the foam for shoes.
  • Bio-degradable foam composition for shoe soles using polylactic acid is prepared by mixing (S3) the kneaded material, 0.1 to 1.5 parts by weight of crosslinking agent, and 2 to 5 parts by weight of blowing agent in an open roll at 80 to 100 ° C.
  • the present invention undergoes a processing process for firstly mastering the substrate in a twin-screw compressor, because of the high melting point polylactic acid and ethylene when the substrate is manufactured in a masterbatch form using a twin-screw extruder. It improves dispersibility when mixed with vinyl acetate copolymer, polyolefin copolymer, ethylene methylacrylic acid copolymer, styrene isoprene styrene copolymer, etc., and when mixing additives, crosslinking agent, foaming agent, etc. in the substrate, This is because it is possible to work in a kneader at a temperature of 100 to 120 ° C., which is a processing condition of a window compound, and to improve the dispersibility and formability of the foam.
  • the compound is uniformly mixed by adding 0.9 parts by weight of the crosslinking agent and 3 parts by weight of the blowing agent with respect to 100 parts by weight of the substrate in an open roll mill to prepare a sheet-like compound having a thickness of 2 to 5 mm.
  • the sheet-like compound thus prepared is introduced into a mold having a mold thickness of 10 mm, and then press-molded for about 10 minutes at a press condition of 170 ° C. and 150 kg / cm 2 to prepare a foam.
  • the compound is uniformly mixed by adding 0.9 parts by weight of the crosslinking agent and 3 parts by weight of the blowing agent with respect to 100 parts by weight of the substrate in an open roll mill to prepare a sheet-like compound having a thickness of 2 to 5 mm.
  • the sheet-like compound thus prepared is introduced into a mold having a mold thickness of 10 mm, and then press-molded for about 10 minutes at a press condition of 170 ° C. and 150 kg / cm 2 to prepare a foam.
  • the compound is uniformly mixed by adding 0.9 parts by weight of the crosslinking agent and 3 parts by weight of the blowing agent with respect to 100 parts by weight of the substrate in an open roll mill to prepare a sheet-like compound having a thickness of 2 to 5 mm.
  • the sheet-like compound thus prepared is introduced into a mold having a mold thickness of 10 mm, and then press-molded for about 10 minutes at a press condition of 170 ° C. and 150 kg / cm 2 to prepare a foam.
  • the compound was prepared by kneading 30 parts by weight of polylactic acid and 70 parts by weight of ethylene vinyl acetate copolymer at 180 ° C. for about 20 minutes in a kneader as a compound kneader. After completion of the kneader work, the compound is uniformly mixed by adding 0.9 parts by weight of the crosslinking agent and 3 parts by weight of the blowing agent with respect to 100 parts by weight of the substrate in an open roll mill to prepare a sheet-like compound having a thickness of 2 to 5 mm. The sheet-like compound thus prepared is introduced into a mold having a mold thickness of 10 mm, and then press-molded for about 10 minutes at a press condition of 170 ° C. and 150 kg / cm 2 to prepare a foam.
  • the present invention is a biodegradable foam composition for shoe soles made of a polylactic acid mixed substrate, wherein the mixed substrate is made of a mixture of polylactic acid and a copolymer, with respect to 100 parts by weight of the mixed substrate, 1 to 10 weight of plasticizer Part, 1 to 10 parts by weight of silane coupling agent, 0.1 to 1.5 parts by weight of crosslinking agent, 2 to 5 parts by weight of blowing agent, 1 to 10 parts by weight of metal oxide, 0.5 to 2 parts by weight of stearic acid, 1 to 10 parts by weight of calcium carbonate
  • a biodegradable foam composition for shoe soles using polylactic acid is characterized in that it forms a form for carrying out the invention.
  • the polylactic acid is preferably 20 to 60 parts by weight based on 100 parts by weight of the mixed substrate.
  • the copolymer mixture is 10 to 60 parts by weight of ethylene vinyl acetate copolymer, 5 to 30 parts by weight of styrene isoprene styrene copolymer, and 5 to 25 parts by weight of ethylene methacrylate copolymer based on 100 parts by weight of the mixed substrate. It is preferable.
  • the plasticizer is preferably a hydroxycarboxylic acid ester plasticizer.
  • the said crosslinking agent individually or in combination with an organic peroxide type crosslinking agent or an epoxy type crosslinking agent.
  • the said foaming agent individually or in combination with an azodicarbonamide type foaming agent or a dinitrosopentamethylene tetraamine type foaming agent.
  • the present invention in the method for producing a biodegradable foam composition for shoe soles made of a polylactic acid mixed base material,
  • the present invention is excellent in hardness and durability by using a substrate in which a polylactic acid, which is a large amount of biodegradable resin, is mixed with a mixture of ethylene vinyl acetate copolymer, styrene isoprene styrene copolymer and / or ethylene methylacrylic acid copolymer. It is possible to manufacture foam for soles, and in particular, the foam composition for shoe soles to which the conventional biodegradable resin is applied contains less than 20 parts by weight of the biodegradable resin with respect to 100 parts by weight of the base material, and thus the effect of substantial biodegradability is insufficient.
  • the present invention provides a biodegradable foam composition for shoe soles using a polylactic acid having an effect of satisfying hardness and durability as a material for shoe midsoles while improving biodegradability by allowing use of a high content of biodegradable resins.
  • a manufacturing method it is widely used in industrial sites To be expected.

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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)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

Cette invention concerne une composition de mousse biodégradable pour semelle contenant de l'acide polylactique et son procédé de préparation, ledit procédé de préparation consistant à incorporer une grande quantité d'acide polylactique dans une base de mélange qui contient l'acide polylactique à titre de résine biodégradable et un mélange de copolymères. Comme la base de mélange contient une grande quantité d'acide polylactique à titre de résine biodégradable, la mousse ainsi obtenue peut manifester une forte biodégradabilité. De plus, comme le mélange de copolymères constitué d'un copolymère d'éthylène-acétate de vinyle, d'un copolymère de styrène-isoprène-styrène, et d'un copolymère d'éthylène-acide méthylacrylique est utilisé pour préparer la composition, la mousse ainsi obtenue peut avoir une bonne longévité et une dureté élevée. Elle peut être utilisée de manière avantageuse comme matériau pour fabriquer une semelle.
PCT/KR2012/000253 2011-01-20 2012-01-11 Composition de mousse biodégradable pour semelle contenant de l'acide polylactique, et son procédé de préparation WO2012099357A2 (fr)

Applications Claiming Priority (2)

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KR1020110005813A KR101223219B1 (ko) 2011-01-20 2011-01-20 폴리락틱엑시드를 이용한 신발 중창용 생분해성 발포체 조성물 및 이의 제조방법
KR10-2011-0005813 2011-01-20

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WO2012099357A2 true WO2012099357A2 (fr) 2012-07-26
WO2012099357A3 WO2012099357A3 (fr) 2012-10-18

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014005684A1 (fr) * 2012-07-05 2014-01-09 Bk Giulini Gmbh Mélange de matière de remplissage utilisé pour produire des matériaux thermoplastiques de renforcement de chaussure
EP2881426A4 (fr) * 2012-07-30 2016-05-25 Lotte Fine Chemical Co Ltd Composition de résine pour moussage contenant de la résine biodégradable, et mousse obtenue avec cette composition
CN110591309A (zh) * 2019-08-31 2019-12-20 佛山碧嘉高新材料科技有限公司 一种可生物降解的发泡塑料复合材料及其制备方法与应用
CN111440423A (zh) * 2020-05-20 2020-07-24 安踏（中国）有限公司 一种生物可降解发泡鞋中底材料及其制备方法
CN111718564A (zh) * 2020-07-10 2020-09-29 广州大草原鞋业有限公司 一种环保易生物降解的登山鞋鞋材及其制备方法
CN112831150A (zh) * 2021-02-01 2021-05-25 陶相琴 一种透气吸汗eva发泡鞋材的制备方法
CN113416361A (zh) * 2021-06-17 2021-09-21 特步(中国)有限公司 一种聚乳酸鞋底及其制作方法

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WO2014005684A1 (fr) * 2012-07-05 2014-01-09 Bk Giulini Gmbh Mélange de matière de remplissage utilisé pour produire des matériaux thermoplastiques de renforcement de chaussure
EP2881426A4 (fr) * 2012-07-30 2016-05-25 Lotte Fine Chemical Co Ltd Composition de résine pour moussage contenant de la résine biodégradable, et mousse obtenue avec cette composition
CN110591309A (zh) * 2019-08-31 2019-12-20 佛山碧嘉高新材料科技有限公司 一种可生物降解的发泡塑料复合材料及其制备方法与应用
CN110591309B (zh) * 2019-08-31 2022-07-01 佛山碧嘉高新材料科技有限公司 一种可生物降解的发泡塑料复合材料及其制备方法与应用
CN111440423A (zh) * 2020-05-20 2020-07-24 安踏（中国）有限公司 一种生物可降解发泡鞋中底材料及其制备方法
CN111440423B (zh) * 2020-05-20 2021-10-15 安踏（中国）有限公司 一种生物可降解发泡鞋中底材料及其制备方法
CN111718564A (zh) * 2020-07-10 2020-09-29 广州大草原鞋业有限公司 一种环保易生物降解的登山鞋鞋材及其制备方法
CN112831150A (zh) * 2021-02-01 2021-05-25 陶相琴 一种透气吸汗eva发泡鞋材的制备方法
CN113416361A (zh) * 2021-06-17 2021-09-21 特步(中国)有限公司 一种聚乳酸鞋底及其制作方法

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