WO2018056539A1 - Composition de résine biodégradable et article biodégradable fabriqué à partir de celle-ci - Google Patents

Composition de résine biodégradable et article biodégradable fabriqué à partir de celle-ci Download PDF

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WO2018056539A1
WO2018056539A1 PCT/KR2017/003780 KR2017003780W WO2018056539A1 WO 2018056539 A1 WO2018056539 A1 WO 2018056539A1 KR 2017003780 W KR2017003780 W KR 2017003780W WO 2018056539 A1 WO2018056539 A1 WO 2018056539A1
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biodegradable
resin composition
weight
group
pla
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PCT/KR2017/003780
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English (en)
Korean (ko)
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김희수
강경돈
김예진
천종필
윤기철
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롯데정밀화학 주식회사
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Publication of WO2018056539A1 publication Critical patent/WO2018056539A1/fr

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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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
    • C08G63/06—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from hydroxycarboxylic acids
    • C08G63/08—Lactones or lactides
    • 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
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • 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
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • 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
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • 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
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/0016—Plasticisers
    • 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
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • 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
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • 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
    • C08K2003/265—Calcium, strontium or barium carbonate
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/018—Additives for biodegradable polymeric composition
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/06—Biodegradable

Definitions

  • the present invention relates to a biodegradable resin composition and a biodegradable article prepared therefrom, and more particularly, to a biodegradable resin composition capable of producing a biodegradable article having excellent mechanical properties, improved whiteness and hiding power, and low gloss.
  • a biodegradable bag such as a biodegradable film made therefrom or a shopping bag made from the film.
  • Synthetic resins such as polyethylene, polystyrene, polypropylene, and polyvinyl chloride have been widely used in trash bags, rollbacks, shopping bags, food packaging, building materials and home appliances in various fields throughout the industry, and are indispensable in everyday life. Occupies. Although these synthetic resins are very durable, there is a problem in that degradability in the natural state adversely affects the ecosystem and causes environmental destruction upon disposal after use. Among these, the proportion of disposable products using the resins is increasing, which is a big social problem and also causes an increase in economic cost.
  • biodegradable resin polylactic acid (PLA), polybutylene succinate (PBS), polybutylene succinate adipate (PBSA), polybutylene adipate-co-terephthalate (PBAT), etc. are commercially available. . These resins can be biodegraded due to the action of the enzymes produced by environmentally existing microorganisms to break down into low molecular weight materials and finally to water and carbon dioxide.
  • PLA has the advantage of excellent rigidity and good transparency in addition to biodegradability, but brittle is strong, brittle, brittle, heat deformation temperature is low as low as 60 °C low thermal stability, very low flexibility and tear characteristics film If manufactured with a disadvantage that is easily torn.
  • Patent Document 1 Korean Unexamined Patent Publication No. 10-2001-0032052
  • Patent Document 1 Korean Unexamined Patent Publication No. 10-2001-0032052
  • a polylactic acid-family polymer and other aliphatic polyester in a weight ratio of 80:20 to 20:80. It discloses about a film and it is described that according to the said method, a brittleness improves and the biodegradable film excellent in sealing property is obtained.
  • the tensile strength of the film produced is poor due to lack of compatibility between the polylactic acid polymer and other aliphatic polyester.
  • Patent Document 2 Korean Patent Publication No. 10-2012-0131961 uses the montmorillonite-based nanoclay together with PLA to manufacture a PBSA blend to improve the compatibility between the resins.
  • Patent Document 2 although the tensile strength and elongation of the produced film was slightly improved, it did not show an improvement effect on the tear strength.
  • biodegradable film prepared according to the prior documents may be insufficiently limited to the application of products such as shopping bags or garbage bags for mart due to insufficient whiteness, hiding power, glossiness, and the like.
  • Patent Document 1 KR1020010032052 A
  • Patent Document 2 KR1020120131961 A
  • the problem to be solved by the present invention is a biodegradable resin composition
  • a biodegradable resin composition comprising PLA and an inorganic material capable of producing a biodegradable article having excellent tensile strength, tensile elongation and tear strength and improved whiteness and hiding power and low gloss To provide.
  • Another object of the present invention is to provide a biodegradable article prepared from the biodegradable resin composition.
  • the present invention (a) 20 to 30% by weight of poly lactic acid (PLA), (b) made of an aliphatic polyester resin and aliphatic / aromatic polyester resin other than the PLA 60 to 70% by weight of at least one biodegradable polyester resin selected from the group, (c) 3 to 10% by weight of calcium carbonate (CaCO 3 ) and (d) 3 to 10% by weight of titanium dioxide (TiO 2 ), ( e) a basic resin composition having a total content of calcium carbonate and titanium dioxide in an amount of 10 to 20% by weight; Plasticizers; And it provides a biodegradable resin composition comprising a compatibilizer.
  • PVA poly lactic acid
  • b made of an aliphatic polyester resin and aliphatic / aromatic polyester resin other than the PLA 60 to 70% by weight of at least one biodegradable polyester resin selected from the group, (c) 3 to 10% by weight of calcium carbonate (CaCO 3 ) and (d) 3 to 10% by weight of titanium dioxide (TiO 2 ),
  • the content ratio of titanium dioxide: calcium carbonate is preferably 1: 1 to 1: 2 (by weight).
  • the (b) biodegradable polyester resin is poly butylene adipate-co-terephthalate (PBAT), poly butylenes succinate (PBS), polybutylene succinate It may include at least one selected from the group consisting of poly butylene succinate-co-adipate (PBSA) and poly hydroxyl alkanoate (PHA).
  • PBAT poly butylene adipate-co-terephthalate
  • PBS poly butylenes succinate
  • PHA poly hydroxyl alkanoate
  • the amount of the plasticizer may be 0.1 to 1.0 parts by weight based on 100 parts by weight of the base resin composition, the plasticizer in the group consisting of dioctyl adipate (DOA), citric acid ester and fatty acid ester It may include at least one selected from the group consisting of at least one ester plasticizer, citric acid (citric acid), polyethylene glycol (PEG) and polypropylene glycol (PPG).
  • DOA dioctyl adipate
  • PEG polyethylene glycol
  • PPG polypropylene glycol
  • the content of the compatibilizer may be 0.1 to 0.5 parts by weight based on 100 parts by weight of the base resin composition, the compatibilizer is a polyisocyanate, a styrene-acrylate copolymer having an epoxy functional group and a carbodiimide It may include one or more selected from the group consisting of.
  • the present invention also provides a biodegradable article prepared from the biodegradable resin composition.
  • the biodegradable article may be a biodegradable film, or may be a biodegradable envelope prepared from the biodegradable film.
  • the biodegradable resin composition comprising polylactic acid according to the present invention comprises calcium carbonate (CaCO 3 ) and titanium dioxide (TiO 2 ) in an appropriate content and ratio to provide a biodegradable article having excellent whiteness and hiding power and reduced gloss. It can manufacture.
  • the biodegradable resin composition may include a suitable plasticizer and a compatibilizer to prepare a biodegradable article having excellent mechanical properties such as tensile strength, tensile elongation and tear strength.
  • the present invention (a) 20 to 30% by weight of poly lactic acid (PLA), (b) at least one biodegradable polyester selected from the group consisting of aliphatic polyester resins and aliphatic / aromatic polyester resins other than the PLA Resin 60 to 70% by weight, (c) 3 to 10% by weight of calcium carbonate (CaCO 3 ) and (d) 3 to 10% by weight of titanium dioxide (TiO 2 ), (e) of the calcium carbonate and titanium dioxide A basic resin composition having a total content of 10 to 20% by weight; Plasticizers; And a biodegradable resin composition comprising a compatibilizer and a biodegradable article prepared therefrom.
  • PLA poly lactic acid
  • biodegradable polyester selected from the group consisting of aliphatic polyester resins and aliphatic / aromatic polyester resins other than the PLA Resin 60 to 70% by weight, (c) 3 to 10% by weight of calcium carbonate (CaCO 3 ) and (d) 3 to 10% by weight of titanium dioxide (TiO 2 ), (
  • PLA is obtained by polymerizing lactic acid or ring-opening polymerization of lactide, which is relatively inexpensive and has advantages as a raw material for biodegradable resins.
  • Such PLA may be at least one selected from the group consisting of poly L-lactic acid, poly D-lactic acid and poly L, D-lactic acid.
  • the content of PLA is 20 to 30% by weight based on the weight of the base resin composition.
  • the content of PLA is less than 20% by weight, the mechanical properties such as tensile strength of the finally produced biodegradable article are lowered, and the content of relatively expensive biodegradable polyester resin is increased, thereby reducing economic efficiency.
  • the content of PLA exceeds 30% by weight, brittleness of the biodegradable article is increased, resulting in a problem in that tensile elongation, tear strength and impact strength are lowered.
  • the content of such biodegradable polyester resin is 60 to 70% by weight based on the weight of the base resin composition.
  • the content of the biodegradable polyester resin composition is less than 60% by weight, the effect of improving the brittleness of the PLA is insignificant, resulting in a problem that the tensile elongation and tear strength of the biodegradable article are lowered.
  • the mechanical properties such as tensile strength of the article is poor and has the disadvantage of low economic efficiency.
  • the biodegradable polyester resin is poly butylene adipate-co-terephthalate (PBAT), poly butylenes succinate (PBS), polybutylene succinate-co- It may include at least one selected from the group consisting of adipate (poly butylene succinate-co-adipate (PBSA) and poly hydroxyl alkanoate (PHA), preferably PBAT.
  • PBAT poly butylene adipate-co-terephthalate
  • PBS poly butylenes succinate
  • PHA poly hydroxyl alkanoate
  • the biodegradable resin composition according to the present invention is titrated with two inorganic additives consisting of calcium carbonate (CaCO 3 ) and titanium dioxide (TiO 2 ) for the purpose of simultaneously obtaining the hiding power, the whiteness improvement and the gloss reduction effect of the biodegradable article. Include in content.
  • the content of (c) calcium carbonate (CaCO 3 ) is 3 to 10% by weight based on the weight of the base resin composition.
  • the content of the calcium carbonate (CaCO 3 ) is less than 3% by weight, there is a problem that the hiding power of the biodegradable article is lowered, whereas when the content of more than 10% by weight, the b value of the chromaticity value is lowered and the whiteness is lowered. .
  • the content of the (d) titanium dioxide (TiO 2 ) is 3 to 10% by weight based on the weight of the base resin composition.
  • the content of the titanium dioxide (TiO 2 ) is less than 3% by weight, a problem arises in that the whiteness of the biodegradable article is lowered.
  • the content of the titanium dioxide (TiO 2 ) is more than 10% by weight is not well stretched, there is a difficulty in producing a biodegradable article in the form of a film, for example.
  • the total content of the calcium carbonate and titanium dioxide is 10 to 20% by weight, and in particular, the content ratio of the titanium dioxide: calcium carbonate is 1: 1 to 1: It is more preferable that it is 2 (weight basis).
  • the plasticizer is an additive that is added to the polymer to modify the properties and functions, such as processability, flexibility
  • the content of the plasticizer is preferably 0.1 to 1.0 parts by weight based on 100 parts by weight of the base resin composition. If the content of the plasticizer is less than 0.1 parts by weight, there is a concern that the improvement of physical properties may be insignificant. On the other hand, if the content of the plasticizer exceeds 1.0 parts by weight, the plasticizer may be included in an excessive amount to migrate to the surface after the biodegradable article is manufactured. The sealing strength of the shopping bag may be gradually weakened, which may cause a problem of degrading the quality of the biodegradable final product.
  • the plasticizer may be at least one ester plasticizer selected from the group consisting of dioctyl adipate (DOA), citric acid ester and fatty acid ester, citric acid, polyethylene glycol (PEG) and It may include one or more selected from the group consisting of polypropylene glycol (PPG).
  • DOA dioctyl adipate
  • PEG polyethylene glycol
  • PPG polypropylene glycol
  • the compatibilizer is added to ensure compatibility of PLA and biodegradable polyester resins other than PLA, and serves to improve mechanical properties such as tensile strength and tear strength of biodegradable articles.
  • the content of the compatibilizer is preferably 0.1 to 0.5 parts by weight based on 100 parts by weight of the base resin composition. When the content of the compatibilizer is less than 0.1 parts by weight, the compatibility between the resins may be lowered, whereas mechanical properties may be lowered. On the other hand, when the content of the compatibilizer exceeds 0.5 parts by weight, the melt index (MI) may be excessively low, resulting in a biodegradable article. There is a fear that the workability is poor.
  • the compatibilizer may include at least one selected from the group consisting of polyisocyanate, styrene-acrylate copolymer having an epoxy functional group, and carbodiimide.
  • styrene-acrylate copolymer having an epoxy functional group for example, the "JONCRYL” (registered trademark) series of BASF can be used.
  • polyisocyanate may be used as the compatibilizer, and more preferably trifunctional polyisocyanate, such as trifunctional polyisocyanate represented by Formula 1 below, may be used.
  • biodegradable resin composition according to the present invention may further include an antioxidant.
  • the antioxidant prevents crosslinking of the polymer that may occur during the process of processing, and serves to prevent discoloration as well as to maintain long-term physical properties of the finished product.
  • the content of the antioxidant is preferably 0.1 to 5 parts by weight based on 100 parts by weight of the base resin composition. When the content of the antioxidant is less than 0.1 parts by weight, the antioxidant effect is insignificant, which may lower the durability of the biodegradable article. On the other hand, if the content of the antioxidant is more than 5 parts by weight, the effect of the content may be insufficient, rather, the excessive amount of the antioxidant may be transferred to the surface may not look good.
  • the antioxidant may include a primary antioxidant and a secondary antioxidant.
  • the primary antioxidant is to inhibit the generation of unstable free radicals generated by the oxidation action or to make the free radicals in a stable form, phenolic or aromatic amine-based antioxidants are typical .
  • the secondary antioxidant serves to inhibit the production of another unstable free radical that may be caused by the oxidation of hydroperoxides formed by the combination of unstable free radicals with oxygen, and phosphorus or thio-based antioxidants Can be used.
  • the present invention also provides a biodegradable article prepared from the biodegradable resin composition.
  • the biodegradable article may be a biodegradable film prepared from the biodegradable resin composition.
  • the biodegradable film can be produced using a film maker according to a conventional method.
  • calcium carbonate (CaCO 3 ) and titanium dioxide (TiO 2 ) may be used for film production in the form of a master batch (M / B) chip to improve dispersibility.
  • biodegradable film is excellent in tensile strength, tensile elongation and tear strength can be used to replace the existing synthetic resin.
  • the biodegradable article may be a biodegradable bag made from the biodegradable film, and may be used, for example, in a garbage bag, a roll bag, a shopping bag, or the like.
  • the biodegradable article may be widely commercialized in fields such as food packaging materials.
  • the biodegradable film prepared according to the present invention is excellent in whiteness, hiding power and low glossiness, when used as a shopping bag for mart, it is more preferable to satisfy the needs of consumers.
  • a plasticizer dioctyl adipate, Aekyung emulsification
  • a twin-screw extruder manufactured by Changsung P & R, L / D: 36/1, diameter: 24.2 mm
  • a compatibilizer trifunctional polyisocyanate, Aekyung Chemical
  • the pellets were melt kneaded at a processing temperature of 170 ° C. using a Eugene Engineering Co., Ltd. YJF-2 (diameter: 60 mm) film molding machine to prepare a biodegradable film having a width of 400 mm and a thickness of 50 ⁇ m, 300 m.
  • Biodegradable film was prepared in the same manner as in Example 1 except that the content of PBAT, PLA, TiO 2 , CaCO 3 , plasticizer and compatibilizer were adjusted as described in Table 1 below.
  • MI Melt index
  • the melt index of the biodegradable resin composition (pellet state) prepared according to Examples 1 to 4 and Comparative Examples 1 to 3 was measured according to ASTM D1238. Specifically, the amount (g) flowing through an orifice (radius: 2 mm, length: 8 mm) for 10 minutes under a temperature of 190 ° C. and a 2.16 kg load was measured as a melt index (MI).
  • the chromaticities L *, a * and b * of the biodegradable films prepared according to Examples 1 to 4 and Comparative Examples 1 to 3 were obtained using a CIE-L * a * b * (CIE 1976) colorimeter using a Konica Minolta colorimeter. Measured at The " L * ", " a * " values and " b * " values are indices of color tone displayed in the CIE-L * a * b * (CIE1976) colorimeter.
  • the value "L *” represents brightness, and the larger this value, the brighter it is.
  • the value "a *” indicates the degree of redness, and the larger this value, the higher the degree of redness.
  • the value "b *” indicates the degree of yellowness, and the larger this value, the higher the yellowness and the lower the whiteness.
  • the tensile strength and tensile elongation in the longitudinal direction (MD) and the transverse direction (TD) of the biodegradable films prepared according to Examples 1 to 4 and Comparative Examples 1 to 3 were measured based on JIS K6251-1.
  • the hiding power of the biodegradable films prepared according to Examples 1 to 4 and Comparative Examples 1 to 3 was measured using a hiding rate measuring instrument (NOVO-SHOADE DUO, Rhopoint Instrument).
  • the glossiness of the biodegradable film was measured using a gloss meter (Micro-TRI-Gloss, BKY).
  • Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 PBAT (% by weight) 67 67 62 62 74 74 70 PLA (% by weight) 23 23 25 25 19 19 23 TiO 2 (% by weight) 7 5 9 4.5 5 5 5 CaCO 3 (% by weight) 3 5 4 8.5 2 2 2 Total (% by weight) 100 100 100 100 100 100 100 100 100 Plasticizer (parts by weight) 0.30 0.30 0.30 - 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 Compatibilizer (parts by weight) 0.25 0.25 0.25 0.25 - 0.25 0.25 MI (g / 10min) 3.5 3.6 3.4 3.8 4.7 4.0 3.9 Film chromaticity L 96 96 97 96 96 96 96 a -0.5 -0.5 -0.3 -0.4 -0.7 -0.4 -0.5 b 1.1 1.0 0.8 1.0 1.3 1.2 1.3 Tear strength (gf) MD 49 49 48 48
  • the content units of the plasticizer and the compatibilizer in Table 1 are parts by weight based on 100 parts by weight of the total amount of PBAT, PLA, TiO 2 and CaCO 3 .
  • the biodegradable film prepared according to Examples 1 to 4 is excellent in whiteness and hiding power and low glossiness as compared to the biodegradable film prepared according to Comparative Examples 1 to 3.
  • the hiding power is markedly high and the gloss is also low. It may be more preferably used for the use of biodegradable bags such as shopping bags for marts and the like.
  • the melt index is lower than that of the resin pellets prepared according to Comparative Examples 1 to 3, and thus the biodegradable resin compositions having excellent processability are It can be confirmed that the manufacturing.
  • biodegradable films according to Comparative Examples 2 and 3 prepared by adding a plasticizer and a compatibilizer may be confirmed to exhibit higher tensile strength, tensile elongation and tear strength than the biodegradable films of Comparative Example 1.
  • the biodegradable films of Examples 1 to 4 were prepared by applying the same plasticizer and compatibilizer content as in Comparative Examples 2 and 3, and a biodegradable film showing excellent physical properties could be prepared.

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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)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Biological Depolymerization Polymers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

La présente invention concerne une composition de résine biodégradable et un article biodégradable fabriqué à partir de celle-ci, la composition de résine biodégradable comprenant : une composition de résine de base ; un plastifiant ; et un agent de compatibilité, la composition de résine de base comprenant (a) 20 à 30 % en poids d'acide polylactique (PLA), (b) 60 à 70 % en poids d'au moins une résine de polyester biodégradable choisie dans le groupe constitué des résines de polyester aliphatique, à l'exclusion du PLA, et des résines de polyester aliphatique/aromatique, (c) 3 à 10 % en poids de carbonate de calcium (CaCO3), et (d) 3 à 10 % en poids de dioxyde de titane (TiO2), (e) la somme des teneurs en carbonate de calcium et en dioxyde de titane variant de 10 à 20 % en poids. La composition de résine biodégradable comprenant de l'acide polylactique selon la présente invention peut produire un article biodégradable présentant une blancheur et un pouvoir couvrant améliorés et un brillant réduit, ainsi qu'une excellente résistance à la traction, un excellent allongement à la traction et une grande résistance à la déchirure.
PCT/KR2017/003780 2016-09-23 2017-04-06 Composition de résine biodégradable et article biodégradable fabriqué à partir de celle-ci WO2018056539A1 (fr)

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KR10-2016-0122157 2016-09-23
KR1020160122157A KR20180032896A (ko) 2016-09-23 2016-09-23 생분해성 수지 조성물 및 이로부터 제조된 생분해성 물품

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020008030A1 (fr) 2018-07-06 2020-01-09 Carbiolice Matiere plastique à haute teneur en pla comprenant des oligomeres d'acide lactique
WO2020008029A1 (fr) 2018-07-06 2020-01-09 Carbiolice Matiere plastique à haute teneur en pla comprenant un ester de citrate
WO2021005205A1 (fr) 2019-07-10 2021-01-14 Carbiolice Matiere plastique à haute teneur en pla comprenant du ppgdge
CN112795155A (zh) * 2020-12-30 2021-05-14 重庆和泰润佳股份有限公司 一种生物降解薄膜及其制备方法和卫生巾
CN114149664A (zh) * 2021-12-15 2022-03-08 中广核高新核材科技（苏州）有限公司 一种高挺度、强韧性全生物降解吹膜改性材料
WO2024103558A1 (fr) * 2022-11-17 2024-05-23 达亚帆布(上海)有限公司 Matériau de film souple publicitaire et décoratif

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KR102466532B1 (ko) 2020-11-09 2022-11-14 (주)도일에코텍 수계 생분해성 조성물, 이를 포함하는 제품 및 수계 생분해성 제품의 제조방법
KR102595757B1 (ko) 2021-11-01 2023-10-30 (주)도일에코텍 물성이 향상된 수계 생분해성 조성물, 이를 포함하는 제품 및 수계 생분해성 제품의 제조방법
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WO2020008029A1 (fr) 2018-07-06 2020-01-09 Carbiolice Matiere plastique à haute teneur en pla comprenant un ester de citrate
WO2021005205A1 (fr) 2019-07-10 2021-01-14 Carbiolice Matiere plastique à haute teneur en pla comprenant du ppgdge
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WO2024103558A1 (fr) * 2022-11-17 2024-05-23 达亚帆布(上海)有限公司 Matériau de film souple publicitaire et décoratif

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