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WO2014204021A1 - Composition de résine biodégradable pour la préparation d'un corps en mousse - Google Patents

Composition de résine biodégradable pour la préparation d'un corps en mousse Download PDF

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Publication number
WO2014204021A1
WO2014204021A1 PCT/KR2013/005317 KR2013005317W WO2014204021A1 WO 2014204021 A1 WO2014204021 A1 WO 2014204021A1 KR 2013005317 W KR2013005317 W KR 2013005317W WO 2014204021 A1 WO2014204021 A1 WO 2014204021A1
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Prior art keywords
foam
resin composition
polylactic acid
weight
biodegradable
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Ceased
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PCT/KR2013/005317
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English (en)
Korean (ko)
Inventor
안종원
권오현
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BLISSPACK Co Ltd
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BLISSPACK Co Ltd
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Priority to PCT/KR2013/005317 priority Critical patent/WO2014204021A1/fr
Publication of WO2014204021A1 publication Critical patent/WO2014204021A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
    • C08F283/02—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polycarbonates or saturated polyesters
    • 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
    • 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
    • C08J9/12—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 by a physical blowing agent
    • C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/10—Esters; Ether-esters
    • C08K5/101—Esters; Ether-esters of monocarboxylic acids
    • 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
    • C08J2201/00—Foams characterised by the foaming process
    • C08J2201/02—Foams characterised by the foaming process characterised by mechanical pre- or post-treatments
    • C08J2201/026—Crosslinking before of after foaming
    • 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
    • C08J2201/00—Foams characterised by the foaming process
    • C08J2201/02—Foams characterised by the foaming process characterised by mechanical pre- or post-treatments
    • C08J2201/03—Extrusion of the foamable blend
    • 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
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/06—CO2, N2 or noble gases
    • 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
    • C08J2300/00—Characterised by the use of unspecified polymers
    • C08J2300/16—Biodegradable polymers
    • 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
    • C08J2433/00—Characterised by the use 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; Derivatives of such polymers
    • C08J2433/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
    • 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
    • C08J2433/00—Characterised by the use 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; Derivatives of such polymers
    • C08J2433/04—Characterised by the use 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; Derivatives of such polymers esters
    • C08J2433/06—Characterised by the use 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; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C08J2433/08—Homopolymers or copolymers of acrylic acid esters
    • 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
    • C08J2433/00—Characterised by the use 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; Derivatives of such polymers
    • C08J2433/04—Characterised by the use 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; Derivatives of such polymers esters
    • C08J2433/14—Characterised by the use 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; Derivatives of such polymers esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L101/00—Compositions of unspecified macromolecular compounds
    • C08L101/16—Compositions of unspecified macromolecular compounds the macromolecular compounds being biodegradable

Definitions

  • the present invention relates to a biodegradable resin composition for producing a foam, and more particularly, to a biodegradable resin composition for producing a foam having improved heat resistance and improved foamability.
  • Foamed plastics have excellent packaging functionality such as cushioning, waterproofing, hygiene, heat shielding, light weight, moldability, and so on.Insulation materials for building, buffering for consumer electronics, concentrated seafood box, rich for marine products, packaging for food and medicine, packaging for home delivery It is widely used as a helmet, surfboard interior material, and other industrial packaging materials.
  • Biodegradable plastics are produced using biomass, which is almost infinitely present in nature. After use, they are decomposed into water and carbon dioxide and used as raw materials for bioorganic resources. Cleanliness is completely decomposed into water and carbon dioxide.
  • Polylactic acid (poly (lactic acid), PLA) is a bio-based polymer, a lactic acid polymer produced by fermenting corn starch.
  • Polylactic acid is a relatively inexpensive biodegradable plastic that can be prepared relatively inexpensively and is compostable.
  • the polylactic acid has excellent characteristics such as resistance to mold, exploitation resistance to food, etc., and the range of its use field is expanding.
  • polylactic acid has some disadvantages such as weak impact resistance, heat resistance, long molding time, and the like.
  • the polymer material In general, in order to manufacture plastic foam, the polymer material must maintain an appropriate melt viscosity so that the foam cells can grow and stabilize under an appropriate foaming environment.
  • the polylactic acid an aliphatic polyester
  • the polylactic acid is an extrusion foaming process due to the linear structural characteristics, crystallization characteristics, low melt viscosity and weak melt strength, which do not effectively maintain the bubbles expanded by the blowing agent during melting and easily burst or collapse. This is not easy.
  • WO 2005/085346 discloses a foamable thermoplastic polymer containing 0.01 to 5 parts by weight of (meth) acrylic acid ester and / or glycidyl ester based on 100 parts by weight of polylactic acid aliphatic polyester.
  • the (meth) acrylic acid ester and glycidyl ester only serve as a crosslinking agent of the polylactic acid-based aliphatic polyester, thereby failing to obtain a flexible composition and having low heat resistance.
  • the inventors have described polylactic acid; And modifying the polylactic acid by melt kneading the biodegradable resin composition for preparing a foam comprising a monomer comprising 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate, acrylic acid and glycidyl methacrylate.
  • the present invention was completed by confirming that a foamed polylactic acid resin composition can form a biodegradable polylactic acid foam having a stable cell and improved heat resistance.
  • An object of the present invention is to provide a biodegradable resin composition for producing a foam having improved heat resistance and improved foamability.
  • Another object of the present invention is to provide a method for producing a biodegradable foam using the biodegradable resin composition for producing the foam.
  • Another object of the present invention is to provide a biodegradable foam produced by the above method.
  • this invention provides the biodegradable resin composition for foam manufacture containing the following.
  • polylactic acid means a polymer containing a lactic acid unit.
  • the lactic acid may be L-lactic acid, D-lactic acid, or a combination thereof.
  • the polylactic acid may be 50 mol% or more, preferably 50 to 80 mol% of lactic acid units.
  • the polylactic acid may contain ⁇ -hydroxy acid (ie, glycolic acid), 3-hydroxybutyl acid, 3-hydroxy valeric acid, 3-hydroxy caproic acid, etc., in addition to the lactic acid unit, and a mixing ratio thereof. Is not limited.
  • the polylactic acid does not easily maintain the bubble expanded by the blowing agent during melting due to the structural characteristics, crystallization characteristics, low melt viscosity and weak melt strength of the linearity, and easily burst or collapse, which is not easy to extrusion foaming process.
  • polylactic acid has a low heat resistance, so there is a limit to the application of products requiring heat. Accordingly, in order to produce a polylactic acid foam having a stable cell, it is necessary to maintain an appropriate melt viscosity so that the foam cell can grow stably and continuously, and to modify the polylactic acid to improve heat resistance.
  • the present invention (A) 50 to 95 parts by weight of polylactic acid; And (B) a biodegradable resin composition for preparing a foam comprising 5 to 50 parts by weight of a monomer comprising 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate, acrylic acid and glycidyl methacrylate. It is characterized in that the polylactic acid foam can be produced and improved heat resistance.
  • the polylactic acid in the biodegradable resin composition for producing a foam of the present invention is modified with monomers under melt kneading to exhibit improved properties.
  • the heat resistance of the polylactic acid foam can be improved by using a monomer containing acrylic acid.
  • the crystallization temperature (Tc) that the maximum crystallization rate is increased compared to the case without using it was confirmed that the heat resistance can be improved (Experimental example 1, Table 3).
  • the melt index (MI) of the resin composition can be lowered to increase the foamability.
  • the glycidyl methacrylate also serves as an initiator due to the epoxy group as a characteristic functional group, thereby allowing modification without additional addition of a peroxide initiator.
  • melt index of the resin composition can be significantly lowered than when not used (Experimental Example 2, Table 4).
  • the weight ratio of 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate, acrylic acid and glycidyl methacrylate may be 1 to 10: 1 to 6: 1: 0.1 to 1. That is, 1 to 10 parts by weight of 2-ethylhexyl acrylate, 1 to 6 parts by weight of 2-hydroxyethyl acrylate, and 0.1 to 1 part by weight of glycidyl methacrylate may be based on 1 part by weight of acrylic acid. .
  • peroxide initiator can be further used to more easily modify the polylactic acid.
  • glycidyl methacrylate also serves as an initiator, modification is possible without additional addition of peroxide initiator.
  • peroxide initiator di-t-butyl peroxide, dicumyl peroxide, di-t-amyl peroxide, 2,5-dimethyl-2,5-di (t-butylperoxy) hexyne-3, t-butyl Peroxy benzoate etc. can be used individually or in combination.
  • the content of the peroxide initiator may be 0.01 to 10 parts by weight based on 100 parts by weight of the total polylactic acid and monomers.
  • the present invention provides a method for producing a biodegradable foam comprising the following steps.
  • step 2 foaming the kneaded product (step 2).
  • the method may further include cooling the kneaded material (step 1-1) between step 1) and step 2).
  • Step 1 (A) 50 to 95 parts by weight of polylactic acid; And (B) melt kneading the biodegradable resin composition for preparing a foam comprising 5 to 50 parts by weight of a monomer comprising 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate, acrylic acid and glycidyl methacrylate. It is a step of modifying the polylactic acid into a monomer by melt kneading a resin composition comprising a polylactic acid and a monomer.
  • the biodegradable resin composition for producing a foam may further include (C) a peroxide initiator.
  • the melt kneading may be performed using an extruder.
  • an extruder a twin screw extruder, a single screw extruder, or the like may be used.
  • a twin screw extruder may be used.
  • the melt kneading is preferably performed by kneading the vacuum pump to a barrel of a twin screw extruder in a vacuum state of -1 kgf / cm 2 or less.
  • the biaxial screw may be used by mixing arrangement of the metering unit, the compression unit and the mixing unit, preferably the first metering unit, compression unit, mixing unit, the second metering unit, compression unit, mixing unit, compression unit , Mixing section, and compression section can be used.
  • the monomer comprising 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate, acrylic acid and glycidyl methacrylate is preferably injected through the second metering unit.
  • the injection of the monomer may use a liquid injection pump, preferably a high pressure metering pump capable of injection up to 10 bar.
  • the melt kneading may be preferably performed at 160 to 230 °C.
  • Step 1-1 is a step of cooling the kneaded material, wherein the modified polylactic acid resin composition is cooled for use in a subsequent process.
  • step 2 the kneaded product is foamed, and the kneaded and modified polylactic acid resin composition is foamed to prepare a foam.
  • the foaming is an azo compound such as azodicarbonamide as a blowing agent; Nitroso compounds such as N, N-dinitrosopentamethylenetetramine and N, N-dinitroso-N, N-dimethylterephthalate; Hydrazine compounds such as hydrazine hydrate; Inorganic blowing agents such as sodium bicarbonate; Inorganic compounds such as nitrogen, carbon dioxide, and water; Hydrocarbons such as methane, ethane, propane, butane and pentane; Freon compounds, such as chlorofluorocarbons (CFC);
  • the organic solvent represented by various alcohols, such as ethanol and methanol, can be performed using 1 or more types, but it is not limited to this.
  • polylactic acid 95 parts by weight of polylactic acid; And 5 parts by weight of a monomer comprising 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate, acrylic acid and glycidyl methacrylate in a weight ratio of 3: 2: 1: 0.6, followed by melt kneading in an extruder and foaming It was confirmed that a foam in which a stable cell was formed can be produced.
  • the present invention also provides a biodegradable foam prepared by the above production method.
  • the biodegradable foams of the present invention have excellent heat resistance, stable foaming properties and biodegradability by using polylactic acid modified with 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate, acrylic acid and glycidyl methacrylate.
  • biodegradable foam of the present invention is non-toxic because there is no unreacted monomer in the foam by using a polylactic acid modified with a specific monomer according to the above production method, Food Code No. 7. Has the advantage of meeting the standards and specifications of utensil and container packaging.
  • the biodegradable foam of the present invention is selected from the group consisting of food packaging materials, electronics packaging materials, food trays, refrigerator trays, aquatic products rich, helmet interior materials, surfboard interior materials and building insulation materials. It can be used as either material, and various applications are possible.
  • the present invention is polylactic acid; And modifying the polylactic acid by melt kneading a biodegradable resin composition for preparing a foam comprising a monomer comprising 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate, acrylic acid and glycidyl methacrylate.
  • a biodegradable polylactic acid foam having a stable cell and improved heat resistance can be produced.
  • Figure 1 is a result of observing the shape of the surface and cross-section of the foam using a scanning electron microscope (SEM) for the morphological observation of the foam of the sheet form of the present invention.
  • SEM scanning electron microscope
  • (a) is Tilt 0 °, x 1k surface appearance
  • (b) Tilt 15 °, x 30 cross-sectional view
  • (c) Tilt 0 °, x 50, cross-sectional view
  • (d ) Is the cross-sectional view when Tilt 15 °, x 50.
  • Figure 2 is a graph showing the results of examining the biodegradability of the foam of the sheet form of the present invention.
  • the biodegradable resin composition for preparing a foam was introduced into a single screw foam extruder (65 mm, L / D 48, model WKY-E65, Won Yeon, Korea), and foamed by injecting nitrogen gas as a blowing agent to obtain a foam in the form of a sheet.
  • a biodegradable resin composition for preparing a foam was obtained in the same manner as in Example 1, and then foamed in the same manner to obtain a foam in the form of a sheet.
  • a biodegradable resin composition for preparing foams was obtained in the same manner as in Example 1 to obtain a foam in the form of a sheet.
  • a biodegradable resin composition for preparing foams was obtained in the same manner as in Example 1 except that 2-ethylhexyl acrylate (EHA) and 2-hydroxyethyl acrylate (HEA) were used as monomers in a 1: 1 manner.
  • EHA 2-ethylhexyl acrylate
  • HOA 2-hydroxyethyl acrylate
  • thermo analysis of the biodegradable resin composition for preparing foams obtained in Examples 1 to 5 and Comparative Examples 1 to 14 was carried out to measure the glass transition temperature (Tg), crystallization temperature (Tc) and melting temperature (Tm).
  • Tg glass transition temperature
  • Tc crystallization temperature
  • Tm melting temperature
  • PVA polylactic acid
  • the melt index of the biodegradable resin composition for producing a foam obtained in Examples 1 to 5 and Comparative Examples 1 to 14 was measured.
  • the melt index of polylactic acid (PLA) was also measured.
  • the polylactic acid is modified as a monomer, but the overall melt index is significantly higher, but Examples 1 to 5, using the glycidyl methacrylate (GMA) as a monomer, and Comparative Examples 1 to In the case of 11, the melt index (MI) was lowered to maintain the proper melt viscosity to allow the foam cells (cell) to grow and stabilize, it was found that the foamability of the polylactic acid can be improved.
  • GMA glycidyl methacrylate
  • Foaming properties of the foam in the form of a sheet prepared in Example 1 were investigated. Specifically, the density, thickness and foaming rate of the foam sheet were measured. In this case, the foaming rate is a value obtained by dividing the density of the biodegradable resin composition for producing a foam by the density of the foam. For comparison, the density of polylactic acid (PLA) was also measured.
  • PVA polylactic acid
  • the foam of the present invention forms an overall homogeneous (foam cell), the inner surface of the closed cell is sufficiently formed as compared to the open cell (open cell), the outer surface of the outer shell without cell formation It was observed that there was no cell hole formed. Therefore, it was expected that the mechanical strength such as tensile strength, compressive strength and impact strength would be excellent through this structure.
  • the impact strength of the foam sheet was measured according to the test method of JIS K 7110 using an Izod impact strength device. As a result, the impact strength was found to be 2.7 kg f ⁇ cm / cm. The results show that the foam sheet forms a homogeneous cell as a whole, and that the closed cell is sufficiently formed on the inner surface as compared to the open cell, and the outer surface shows structurally sufficient resistance to impact by the formation of the shell without cell formation. It seemed to be due.
  • Example 1 The heat resistance of the foam in the form of a sheet prepared in Example 1 was investigated.
  • Heat Sag Test was performed for 60 minutes at a constant temperature according to Japanese standard JIS K-7195. As a result, the result was bent within 10 mm at 102 ⁇ 3 °C, from the results it can be seen that the foam sheet is heat resistance up to 105 °C maximum.
  • the biodegradability test was carried out according to the measurement of the biodegradability and disintegration degree of the plastic under composting conditions-Part 1: titration of carbon dioxide generated by titration (KSM 3100-1).

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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)
  • Biological Depolymerization Polymers (AREA)

Abstract

La présente invention concerne une composition de résine biodégradable pour la préparation d'un corps en mousse et, plus spécifiquement, une composition de résine biodégradable pour la préparation d'un corps en mousse, ayant une thermorésistance améliorée et une aptitude à la mise en œuvre de la mousse améliorée, la composition comprenant un poly(acide lactique), et un monomère comprenant l'acrylate de 2-éthylhexyle, l'acrylate de 2-hydroxyéthyle, l'acide acrylique et le méthacrylate de glycidyle.
PCT/KR2013/005317 2013-06-17 2013-06-17 Composition de résine biodégradable pour la préparation d'un corps en mousse Ceased WO2014204021A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/KR2013/005317 WO2014204021A1 (fr) 2013-06-17 2013-06-17 Composition de résine biodégradable pour la préparation d'un corps en mousse

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PCT/KR2013/005317 WO2014204021A1 (fr) 2013-06-17 2013-06-17 Composition de résine biodégradable pour la préparation d'un corps en mousse

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112409551A (zh) * 2020-11-26 2021-02-26 四会市邦得利化工有限公司 一种可降解聚乳酸树脂成膜乳液及其制备方法及应用
CN113929831A (zh) * 2021-09-08 2022-01-14 湖北中烟工业有限责任公司 一种高熔体强度聚乳酸的制备方法及其应用

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