WO2024253483A1 - 생분해성 수지용 결정핵제 및 이를 포함하는 생분해성 수지 조성물 - Google Patents
생분해성 수지용 결정핵제 및 이를 포함하는 생분해성 수지 조성물 Download PDFInfo
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- WO2024253483A1 WO2024253483A1 PCT/KR2024/007862 KR2024007862W WO2024253483A1 WO 2024253483 A1 WO2024253483 A1 WO 2024253483A1 KR 2024007862 W KR2024007862 W KR 2024007862W WO 2024253483 A1 WO2024253483 A1 WO 2024253483A1
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- Prior art keywords
- biodegradable resin
- hydroxybutyrate
- pha
- nucleating agent
- polyhydroxyalkanoate
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- 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
- C08K5/05—Alcohols; Metal alcoholates
- C08K5/053—Polyhydroxylic alcohols
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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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- 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
- C08K5/0083—Nucleating agents promoting the crystallisation of the polymer matrix
-
- 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
- C08L67/03—Polyesters derived from dicarboxylic acids and dihydroxy compounds the dicarboxylic acids and dihydroxy compounds having the carboxyl- and the hydroxy groups directly linked to aromatic rings
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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
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
Definitions
- the present invention relates to a crystal nucleating agent for controlling the crystallization rate of a biodegradable resin and a biodegradable resin composition comprising the crystal nucleating agent.
- Petroleum-based synthetic plastics cause problems such as the creation of microplastics, environmental pollution, and the generation of large amounts of waste.
- the synthetic plastics are difficult to recycle, increase soil acidity, and pose a major threat to the marine ecosystem.
- PHA polyhydroxyalkanoate
- PHA polyhydroxyalkanoate
- biodegradable resins such as polyhydroxyalkanoate (PHA) have a slow crystallization rate, so it takes a long time to solidify after melting. If the solidification time is long and the solidification speed is slow, problems such as reduced productivity and mechanical properties of products using biodegradable resins may occur. For example, if the product manufactured using polyhydroxyalkanoate (PHA) is a film, it is difficult to apply it to a production line that produces films due to the slow solidification rate, and the cooling time is long, so production efficiency is reduced. In addition, after the film is made, secondary crystallization of polyhydroxyalkanoate (PHA) may occur over a certain period of time, which may reduce the physical properties of the product such as elongation and breaking strength.
- PHA polyhydroxyalkanoate
- the task of the present invention is to provide a crystal nucleating agent for a biodegradable resin, which optimizes the crystallization speed of a biodegradable resin, such as polyhydroxyalkanoate (PHA), thereby improving productivity (processability) when manufacturing a product using the biodegradable resin, and maintaining the mechanical properties of the product in an excellent state even after a certain period of time.
- a biodegradable resin such as polyhydroxyalkanoate (PHA)
- another object of the present invention is to provide a biodegradable resin composition comprising a crystal nucleating agent for the biodegradable resin and a biodegradable film manufactured from the biodegradable resin composition.
- the present invention provides a crystal nucleating agent for a biodegradable resin comprising an aliphatic compound having three or more hydroxyethyl groups.
- the aliphatic compound may be a compound represented by the following chemical formula 1, or a derivative thereof.
- R a is selected from the group consisting of hydrogen, a substituted or unsubstituted C 1 -C 5 alkyl group, and a substituted or unsubstituted C 1 -C 5 hydroxyalkyl group.
- the aliphatic compound may be at least one selected from the group consisting of trimethylolethane, trimethylolpropane, and tripentaerythritol.
- the present invention provides a biodegradable resin composition
- a biodegradable resin composition comprising a crystal nucleating agent for the biodegradable resin; and polyhydroxyalkanoate (PHA).
- PHA polyhydroxyalkanoate
- the polyhydroxyalkanoate (PHA) may include repeating units derived from one or more monomers selected from the group consisting of 3-hydroxybutyrate (3HB), 3-hydroxyhexanoate (3HH), 3-hydroxypropionate (3HP), 3-hydroxyvalerate (3HV), 4-hydroxybutyrate (4HB), 4-hydroxyhexanoate (4HH), 4-hydroxypropionate (4HP), and 4-hydroxyvalerate (4HV).
- the polyhydroxyalkanoate (PHA) may contain 1 to 50 wt% of repeating units derived from 4-hydroxybutyrate (4HB) based on the total weight of the polyhydroxyalkanoate (PHA).
- the polyhydroxyalkanoate (PHA) is a poly 3-hydroxybutyrate-co-3-hydroxyhexanoate copolymer (P3HB-co-3HH), a poly 3-hydroxybutyrate-co-3-hydroxyvalerate copolymer (P3HB-co-3HV), a poly 3-hydroxybutyrate-co-3-hydroxypropionate copolymer (P3HB-co-3HP), a poly 3-hydroxybutyrate-co-4-hydroxybutyrate copolymer (P3HB-co-4HV).
- P3HB-co-3HH poly 3-hydroxybutyrate-co-3-hydroxyhexanoate copolymer
- P3HB-co-3HV poly 3-hydroxybutyrate-co-3-hydroxyvalerate copolymer
- P3HB-co-3HP poly 3-hydroxybutyrate-co-3-hydroxypropionate copolymer
- P3HB-co-4HV a poly 3-hydroxybutyrate-co-4-hydroxybutyrate copolymer
- the composition may include at least one selected from the group consisting of poly-3-hydroxybutyrate-co-4-hydroxyhexanoate copolymer (P3HB-co-4HB), poly-3-hydroxybutyrate-co-4-hydroxyvalerate copolymer (P3HB-co-4HV), and poly-3-hydroxybutyrate-co-4-hydroxypropionate copolymer (P3HB-co-4HP).
- P3HB-co-4HB poly-3-hydroxybutyrate-co-4-hydroxyhexanoate copolymer
- P3HB-co-4HV poly-3-hydroxybutyrate-co-4-hydroxyvalerate copolymer
- P3HB-co-4HP poly-3-hydroxybutyrate-co-4-hydroxypropionate copolymer
- the polyhydroxyalkanoate (PHA) may be a poly 3-hydroxybutyrate-co-4-hydroxybutyrate copolymer (P3HB-co-4HB).
- the poly 3-hydroxybutyrate-co-4-hydroxybutyrate copolymer may contain 1 to 50 wt% of repeating units derived from 4-hydroxybutyrate (4HB) and 50 to 99 wt% of repeating units derived from 3-hydroxybutyrate (3HB), based on the total weight of the poly 3-hydroxybutyrate-co-4-hydroxybutyrate copolymer (P3HB-co-4HB).
- the content of the crystal nucleating agent for the biodegradable resin may be 0.01 to 30 parts by weight based on 100 parts by weight of the polyhydroxyalkanoate (PHA).
- the present invention provides a biodegradable film manufactured from the biodegradable resin composition.
- the present invention provides a use of a crystal nucleating agent for a biodegradable resin of an aliphatic compound having three or more hydroxyethyl groups when mixed with polyhydroxyalkanoate (PHA).
- PHA polyhydroxyalkanoate
- the crystal nucleating agent for a biodegradable resin according to the present invention has a specific functional group and a specific structure (e.g., a compound represented by the chemical formula 1, or a derivative thereof) that affect the crystallization process of the biodegradable resin, thereby improving the slow crystallization rate of the biodegradable resin more quickly, and thereby making the solidification rate in the molding process of the biodegradable resin (e.g., injection molding, extrusion molding, etc.) faster than before.
- a specific structure e.g., a compound represented by the chemical formula 1, or a derivative thereof
- the crystal nucleating agent for a biodegradable resin according to the present invention can significantly increase the crystallization rate (solidification rate) of polyhydroxyalkanoate (PHA) compared to conventional crystal nucleating agents of polyhydroxyalkanoate (PHA), such as cyanuric acid, talc, mannitol, xylitol, and sorbitol.
- PHA polyhydroxyalkanoate
- PHA polyhydroxyalkanoate
- the present invention can provide a product with significantly improved productivity (processability) and mechanical properties.
- the crystal nucleating agent for a biodegradable resin according to the present invention has a specific functional group and/or a specific structure that affects the crystallization speed of the biodegradable resin, thereby making the crystallization speed (solidification speed) of the biodegradable resin faster than before, and this will be specifically described as follows.
- the crystallization speed of the biodegradable resin may mean the time taken for a crystal array to be formed while the biodegradable resin in a molten state forms crystals through cooling.
- the crystallization speed of the biodegradable resin may mean the solidification rate of the biodegradable resin.
- the crystal nucleating agent for the biodegradable resin according to the present invention comprises a hydroxyethyl group ( ) includes an aliphatic compound having three or more hydroxyethyl groups.
- the number of hydroxyethyl groups of the aliphatic compound is not particularly limited as long as it is three or more, but considering the crystallization speed of the biodegradable resin and the overall physical properties of the product, it may be 3 to 15, 3 to 13, 3 to 10, 3 to 8, 3 to 6, 3 to 5, or 3 to 4.
- the aliphatic compound may be an acyclic type aliphatic compound having 3 to 10, 3 to 8, or 3 to 4 hydroxyethyl groups.
- the aliphatic compound may be a compound represented by the following chemical formula 1, or a derivative thereof.
- R a is selected from the group consisting of hydrogen; a substituted or unsubstituted C 1 -C 5 alkyl group; and a substituted or unsubstituted C 1 -C 5 hydroxyalkyl group.
- R a may be, but is not limited to, a substituted or unsubstituted methyl group, a substituted or unsubstituted ethyl group, a substituted or unsubstituted propyl group, a substituted or unsubstituted hydroxymethyl group, or a substituted or unsubstituted hydroxyethyl group.
- the substituent is not particularly limited, but may be at least one selected from the group consisting of deuterium, halogen (F, Cl, Br, I), a hydroxy group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, an ester group, a ketone group, a carboxyl group, a C 1 -C 5 alkyl group, a C 1 -C 5 hydroxyalkyl group, a C 2 -C 5 alkenyl group, a C 2 -C 5 alkynyl group, a C 1 -C 5 alkoxy group, a C 3 -C 10 heteroaryl group, and a C 6 -C 20 aryl group.
- a derivative of the compound represented by the above chemical formula 1 may be a compound obtained by chemically changing a part of the compound represented by the above chemical formula 1.
- the change may be introduction of a functional group, oxidation, or reduction, or substitution of atoms.
- the aliphatic compound may be at least one selected from the group consisting of trimethylolethane (a compound represented by chemical formula 1), trimethylolpropane (a compound represented by chemical formula 1), and tripentaerythritol (a derivative of the compound represented by chemical formula 1).
- the aliphatic compound may be trimethylolethane or trimethylolpropane.
- the crystallization speed of the biodegradable resin can be accelerated to a target level, while minimizing changes in the mechanical properties (e.g., breaking strength, elongation, etc.) of the biodegradable resin (biodegradable resin composition) and products manufactured therefrom even after a certain period of time (e.g., 1 to 3 weeks).
- the molecular weight of the above aliphatic compound may be specifically 100 to 450 g/mol, 100 to 430 g/mol, 105 to 420 g/mol, 105 to 400 g/mol, 110 to 380 g/mol, 110 to 350 g/mol, 115 to 320 g/mol, 115 to 300 g/mol, 120 to 250 g/mol, 120 to 200 g/mol and 120 to 150 g/mol, but is not limited thereto.
- the melting point of the aliphatic compound may be specifically 40 to 300°C, 45 to 280°C, 48 to 250°C, 50 to 230°C, 55 to 225°C, 70 to 220°C, 100 to 215°C, 150 to 210°C, or 180 to 210°C, but is not limited thereto.
- the biodegradable resin to which such aliphatic compounds can be applied as a crystal nucleating agent is not particularly limited as long as it is a commonly known biodegradable resin.
- the biodegradable resin may include at least one selected from the group consisting of polyhydroxyalkanoate (PHA), polylactic acid (PLA), polybutylene adipate terephthalate (PBAT), polybutylene succinate (PBS), polyglycolic acid (PGA), polycaprolactone (PCL), and thermoplastic starch (TPS), but is not limited thereto.
- the biodegradable resin may be polyhydroxyalkanoate (PHA), and accordingly, the crystal nucleating agent for the biodegradable resin may be a crystal nucleating agent for polyhydroxyalkanoate (PHA).
- a biodegradable resin composition according to the present invention comprises a crystal nucleating agent for a biodegradable resin; and polyhydroxyalkanoate (PHA).
- PHA polyhydroxyalkanoate
- the crystal nucleating agent for biodegradable resin included in the biodegradable resin composition according to the present invention is an additive that improves (enhances) the slow crystallization speed (solidification speed) of polyhydroxyalkanoate (PHA) by changing the crystallization form of polyhydroxyalkanoate (PHA) when the polyhydroxyalkanoate (PHA) is cooled after melting.
- This crystal nucleating agent for biodegradable resin has substantially the same composition and characteristics as the crystal nucleating agent for biodegradable resin described above.
- the content of the crystal nucleating agent for the biodegradable resin is not particularly limited, but may be 0.01 to 30 parts by weight relative to 100 parts by weight of the polyhydroxyalkanoate (PHA).
- the content of the crystal nucleating agent for the biodegradable resin may be 0.03 to 28 parts by weight, 0.05 to 25 parts by weight, 0.08 to 23 parts by weight, 0.1 to 20 parts by weight, 0.3 to 18 parts by weight, 0.5 to 15 parts by weight, 0.8 to 13 parts by weight, 1 to 10 parts by weight, 1.3 to 8 parts by weight, 1.5 to 6 parts by weight, 1.8 to 5 parts by weight, 2 to 4.5 parts by weight, 2.3 to 4.3 parts by weight, 2.5 to 4 parts by weight, 2.7 to 3.8 parts by weight, 2.8 to 3.5 parts by weight, or 2.9 to 3.3 parts by weight, relative to 100 parts by weight of the polyhydroxyalkanoate (PHA), but is not limited thereto.
- the content of the crystal nucleating agent for the biodegradable resin is within the above
- the polyhydroxyalkanoate (PHA) included in the biodegradable resin composition according to the present invention is a natural aliphatic polyester resin that accumulates in microbial cells.
- Such polyhydroxyalkanoate (PHA) can be completely decomposed into carbon dioxide, water, organic waste, etc. in soil and/or the ocean, and thus can have excellent biodegradability without generating microplastics.
- the above polyhydroxyalkanoate (PHA) can be obtained through cell disruption of a microorganism using a mechanical method or a physical method, or through cell disruption of a microorganism using a non-mechanical method or a chemical method.
- the polyhydroxyalkanoate (PHA) can be a copolymer obtained through an enzyme-catalyzed polymerization process of one or more monomers within a living microbial cell.
- PHAs polyhydroxyalkanoates
- PHAs may comprise repeating units derived from one or more monomers selected from the group consisting of 3-hydroxybutyrate (3HB), 3-hydroxyhexanoate (3HH), 3-hydroxypropionate (3HP), 3-hydroxyvalerate (3HV), 4-hydroxybutyrate (4HB), 4-hydroxyhexanoate (4HH), 4-hydroxypropionate (4HP) and 4-hydroxyvalerate (4HV).
- the above polyhydroxyalkanoate (PHA) can be classified into crystalline PHA (cPHA), semi-crystalline PHA (scPHA), or amorphous PHA (aPHA) depending on the type of monomer and the content of repeating units derived from the monomer.
- the polyhydroxyalkanoate (PHA) can be classified into cPHA, scPHA, or aPHA by controlling its crystallinity depending on the content of repeating units (4HB repeating units) derived from 4-hydroxybutyrate (4HB).
- the content of the 4HB repeating unit is not particularly limited, but may be 1 to 50 wt% based on the total weight of the polyhydroxyalkanoate (PHA).
- the content of the 4HB repeating unit may be 1 to 48 wt%, 1.2 to 45 wt%, 1.3 to 43 wt%, 1.5 to 42 wt%, 1.7 to 40 wt%, 1.8 to 38 wt%, 2 to 35 wt%, 2.1 to 33 wt%, 2.3 to 32 wt%, 2.5 to 30 wt%, 2.7 to 28 wt%, 2.9 to 27 wt%, 3 to 25 wt%, 4 to 24 wt%, 5 to 23 wt%, 6 to 20 wt%, 7 to 18 wt%, or 8 to 15 wt%, based on the total weight of the polyhydroxyalkanoate (PHA).
- PHA polyhydroxyalkanoate
- the crystallization speed (solidification speed) of the polyhydroxyalkanoate (PHA) can be controlled more quickly by the crystal nucleating agent for the biodegradable resin, thereby providing a product having excellent mechanical properties, processability, and productivity.
- the polyhydroxyalkanoate (PHA) is a poly 3-hydroxybutyrate-co-3-hydroxyhexanoate copolymer (P3HB-co-3HH), a poly 3-hydroxybutyrate-co-3-hydroxyvalerate copolymer (P3HB-co-3HV), a poly 3-hydroxybutyrate-co-3-hydroxypropionate copolymer (P3HB-co-3HP), a poly 3-hydroxybutyrate-co-4-hydroxybutyrate copolymer (P3HB-co-4HB), a poly 3-hydroxybutyrate-co-4-hydroxyhexanoate copolymer (P3HB-co-4HH), a poly 3-hydroxybutyrate-co-4-hydroxyvalerate copolymer (P3HB-co-4HV), and a poly It may include at least one selected from the group consisting of 3-hydroxybutyrate-co-4-hydroxypropionate copolymer (P3HB-co-4HP).
- the polyhydroxyalkanoate (PHA) may be a poly 3-hydroxybutyrate-co-4-hydroxybutyrate copolymer (P3HB-co-4HB) comprising a repeating unit (3HB repeating unit) derived from 3-hydroxybutyrate (3HB) and a repeating unit (4HB repeating unit) derived from 4-hydroxybutyrate (4HB), when considering the processability, productivity and mechanical properties of a product manufactured from the biodegradable resin composition.
- P3HB-co-4HB poly 3-hydroxybutyrate-co-4-hydroxybutyrate copolymer
- the content of each of the 3HB repeating unit and the 4HB repeating unit included in the above poly 3-hydroxybutyrate-co-4-hydroxybutyrate copolymer may not be particularly limited. Specifically, the content of the 3HB repeating unit may be 50 to 99 wt%, 55 to 99 wt%, 60 to 98 wt%, 65 to 98 wt%, 70 to 97 wt%, 75 to 97 wt%, 76 to 96 wt%, 77 to 95 wt%, 78 to 94 wt%, 79 to 93 wt%, 80 to 92 wt%, 81 to 91 wt%, or 82 to 90 wt%, based on the total weight of the poly 3-hydroxybutyrate-co-4-hydroxybutyrate copolymer (P3HB-co-4HB).
- the content of the 4HB repeating unit may be 1 to 50 wt%, 1 to 45 wt%, 2 to 40 wt%, 2 to 35 wt%, 3 to 30 wt%, 3 to 25 wt%, 4 to 24 wt%, 5 to 23 wt%, 6 to 22 wt%, 7 to 21 wt%, 8 to 20 wt%, 9 to 19 wt%, or 10 to 18 wt%, based on the total weight of the poly 3-hydroxybutyrate-co-4-hydroxybutyrate copolymer (P3HB-co-4HB).
- the interaction between the poly 3-hydroxybutyrate-co-4-hydroxybutyrate copolymer (P3HB-co-4HB) and the crystal nucleating agent for the biodegradable resin is maximized, thereby providing a biodegradable resin composition having a fast crystallization rate and excellent physical properties.
- the weight average molecular weight (Mw) of the above polyhydroxyalkanoate (PHA) is not particularly limited, but may be 100,000 to 800,000 g/mol, 130,000 to 780,000 g/mol, 150,000 to 750,000 g/mol, 200,000 to 700,000 g/mol, 250,000 to 650,000 g/mol, 280,000 to 600,000 g/mol, 300,000 to 550,000 g/mol, or 320,000 to 500,000 g/mol.
- the biodegradable resin composition according to the present invention may further contain commonly known additives in addition to the crystal nucleating agent for the biodegradable resin and the polyhydroxyalkanoate (PHA).
- the additives may be at least one selected from the group consisting of an antioxidant, a compatibilizer, a slip agent, a melt strength enhancer, an ultraviolet absorber, a crosslinking agent, an organic pigment, and an inorganic pigment, but are not limited thereto.
- the content of such additives may be appropriately adjusted within a range that does not affect the physical properties of the biodegradable resin composition and the product.
- biodegradable resin composition according to the present invention may further include a commonly known biodegradable resin in addition to the polyhydroxyalkanoate (PHA).
- the biodegradable resin is not particularly limited, but may include at least one selected from the group consisting of polylactic acid (PLA), polybutylene adipate terephthalate (PBAT), polybutylene succinate (PBS), polyglycolic acid (PGA), polycaprolactone (PCL), and thermoplastic starch (TPS).
- the biodegradable resin composition according to the present invention can have a remarkably fast solidification rate, and thus can exhibit excellent formability.
- the biodegradable resin composition according to the present invention may have a solidification rate, which is the time taken from melting to cooling, of less than 4 minutes, 3 minutes and 30 seconds or less, 3 minutes or less, 2 minutes or less, 2 minutes or less, 1 minute and 30 seconds or less, 1 minute or less, 30 seconds or less, 20 seconds or less, or 15 seconds or less.
- the solidification rate may be, but is not limited to, 3 seconds to 3 minutes, 3 seconds to 2 minutes, 4 seconds to 1 minute, 4 seconds to 40 seconds, 5 seconds to 35 seconds, 5 seconds to 25 seconds, 5 seconds to 23 seconds, 6 seconds to 20 seconds, 6 seconds to 18 seconds, or 7 seconds to 15 seconds.
- the biodegradable resin composition according to the present invention may be a state in which the crystal nucleating agent for the biodegradable resin and the polyhydroxyalkanoate (PHA) are physically or chemically mixed (compounded).
- the biodegradable resin composition according to the present invention may be a biodegradable resin pellet obtained by melting and kneading a composition raw material including the crystal nucleating agent for the biodegradable resin and the polyhydroxyalkanoate (PHA), extruding it in the form of a strand, cooling (solidifying) and cutting it in an underwater cutter including a water bath, and then drying it.
- the above melt mixing can be carried out by a conventionally known single-screw extruder or twin-screw extruder.
- the extrusion temperature (die extrusion temperature) applied in the above melt mixing is not particularly limited, but may be 145 to 165°C, 148 to 163°C, 150 to 160°C, 153 to 160°C, 155 to 160°C, or 155 to 158°C.
- the temperature of the above water bath is not particularly limited, but may be specifically 20 to 30°C, 22 to 28°C, or 24 to 26°C.
- the biodegradable resin composition according to the present invention can be manufactured in the form of pellets and then processed into various shapes through commonly known molding methods (e.g., injection molding, extrusion molding, compression molding, vacuum molding, pressure molding, blow molding, etc.). Specifically, the biodegradable resin composition according to the present invention can be processed into the form of a film, a sheet, a straw, a container, a cup, a spoon, a fork, a knife, a tray, a fishing net, or a bottle.
- molding methods e.g., injection molding, extrusion molding, compression molding, vacuum molding, pressure molding, blow molding, etc.
- the biodegradable resin composition according to the present invention can be processed into the form of a film, a sheet, a straw, a container, a cup, a spoon, a fork, a knife, a tray, a fishing net, or a bottle.
- the biodegradable film according to the present invention is manufactured from the biodegradable resin composition described above. Specifically, since the biodegradable film according to the present invention is manufactured from the biodegradable resin composition containing the crystal nucleating agent for the biodegradable resin described above, the mechanical properties are maintained with little change even after a certain period of time, and thus it can exhibit excellent properties while exhibiting significantly improved productivity.
- the biodegradable film according to the present invention can exhibit a first melting temperature (T m1 ), a second melting temperature (T m2 ), and a glass transition temperature (T c ), respectively, when analyzed using differential scanning calorimetry (DSC) equipment.
- T m1 first melting temperature
- T m2 second melting temperature
- T c glass transition temperature
- the first melting temperature (T m1 ) of the biodegradable film according to the present invention may be specifically, but not limited to, 130 to 150° C., 132 to 148° C., 134 to 146° C., 136 to 144° C., 138 to 142° C., or 140 to 141° C.
- the second melting temperature (T m2 ) of the biodegradable film according to the present invention may be specifically, but not limited to, 151 to 170° C., 152 to 168° C., 154 to 166° C., 156 to 164° C., 158 to 162° C., or 160 to 161° C.
- the glass transition temperature (T c ) of the biodegradable film according to the present invention may be specifically, but not limited to, 55 to 85° C., 57 to 83° C., 59 to 81° C., 60 to 80° C., 62 to 78° C., 64 to 76° C., or 65 to 75° C.
- the biodegradable film according to the present invention may have a breaking strength of 30 MPa or more as measured according to ASTM D 882.
- the biodegradable film may have a breaking strength of 31 MPa or more, 32 MPa or more, 33 MPa or more, 34 MPa or more, or 35 MPa or more (e.g., 30 to 40 MPa, 31 to 38 MPa, 32 to 37 MPa, 33 to 36 MPa, or 34 to 35 MPa), but is not limited thereto.
- the biodegradable film according to the present invention may have an elongation of 5 to 40% as measured according to ASTM D 882. Specifically, the biodegradable film may have an elongation of 5 to 38%, 6 to 35%, 6 to 32%, 7 to 30%, 7 to 25%, 8 to 20%, 8 to 18%, 9 to 15%, 9 to 13%, or 10 to 12%.
- the thickness of the biodegradable film according to the present invention is not particularly limited, but may be 5 to 250 ⁇ m, 5 to 200 ⁇ m, 5 to 150 ⁇ m, 5 to 100 ⁇ m, 10 to 90 ⁇ m, 15 to 80 ⁇ m, 20 to 70 ⁇ m, 25 to 65 ⁇ m, 30 to 60 ⁇ m, 40 to 55 ⁇ m, or 50 to 55 ⁇ m.
- the biodegradable film according to the present invention can be utilized in various fields because it has excellent mechanical properties and productivity while being environmentally friendly.
- the biodegradable resin composition manufactured above was melt-extruded and then put into a roll-to-roll process to manufacture a biodegradable film having a thickness of 50 ⁇ m. At this time, the temperature of the roll in the roll-to-roll process was maintained at approximately 38°C.
- a biodegradable resin composition (biodegradable resin pellets) and a biodegradable film were manufactured through the same process as Example 1, except that the crystal nucleating agent of Preparation Example 2 (trimethylolpropane) was used instead of the crystal nucleating agent of Preparation Example 1.
- the crystal nucleating agent of Preparation Example 2 trimethylolpropane
- a biodegradable resin composition (biodegradable resin pellets) and a biodegradable film were manufactured through the same process as Example 1, except that the crystal nucleating agent (Cyanuric Acid) of Preparation Example 3 was used instead of the crystal nucleating agent of Preparation Example 1.
- the crystal nucleating agent Cosmetic Acid
- a biodegradable resin composition (biodegradable resin pellets) and a biodegradable film were manufactured through the same process as Example 1, except that the crystal nucleating agent of Preparation Example 1 was not used (P3HB-co-4HB resin was applied alone).
- a biodegradable resin composition (biodegradable resin pellets) and a biodegradable film were manufactured through the same process as Example 1, except that the crystal nucleating agent (Xylitol) of Preparation Example 4 was used instead of the crystal nucleating agent of Preparation Example 1.
- a biodegradable resin composition (biodegradable resin pellets) and a biodegradable film were manufactured through the same process as Example 1, except that the crystal nucleating agent (D-Sorbitol) of Preparation Example 5 was used instead of the crystal nucleating agent of Preparation Example 1.
- the crystal nucleating agent D-Sorbitol
- a biodegradable resin composition (biodegradable resin pellets) and a biodegradable film were manufactured through the same process as Example 1, except that the crystal nucleating agent (Succinamide) of Preparation Example 6 was used instead of the crystal nucleating agent of Preparation Example 1.
- biodegradable resin compositions biodegradable resin pellets
- biodegradable films manufactured in Examples 1 and 2 and Comparative Examples 1 to 5 were analyzed using a commonly known differential scanning calorimetry (DSC) device to measure the melting temperature (T m ), crystallization temperature (T c ), cold crystallization temperature (T cc ), and heat capacity ( ⁇ H c ), respectively.
- DSC differential scanning calorimetry
- T m melting temperature
- T c crystallization temperature
- T cc cold crystallization temperature
- ⁇ H c heat capacity
- biodegradable resin compositions biodegradable resin pellets
- biodegradable films manufactured in Examples 1 and 2 and Comparative Examples 1 to 5, respectively were analyzed for breaking strength and elongation using a universal testing machine (UTM).
- UTM universal testing machine
- the biodegradable resin compositions (biodegradable resin pellets) or biodegradable films were pressed with a hot press (set temperature 160° C.) to manufacture test pieces (film test pieces) having a width of 15 mm, a length of 100 mm, and a thickness of 200 ⁇ m, and after leaving them at room temperature for 1 day, 7 days, and 14 days, the breaking strength and elongation were measured according to ASTM D 882 (Crosshead speed: 200 mm/min, width: 15 mm, gauge length: 50 mm).
- Comparative Example 2 where no crystal nucleating agent was used, it can be confirmed that the solidification speed is more than 5 minutes, so the manufacturing efficiency of the film is low, and the mechanical properties of the film are also significantly deteriorated over time.
- Comparative Examples 1, 3, 4, and 5 where a known crystal nucleating agent, not the crystal nucleating agent according to the present invention, was applied, it can be confirmed that the productivity (manufacturing efficiency) of the film is low or the mechanical properties of the film are deteriorated.
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Abstract
Description
| 구분 | 결정핵제(화합물) | 제조사 |
| 준비예 1 | Trimethylolethane | Sigma Aldrich |
| 준비예 2 | Trimethylolpropane | Sigma Aldrich |
| 준비예 3 | Cyanuric Acid | TLC |
| 준비예 4 | Xylitol | Sigma Aldrich |
| 준비예 5 | D-Sorbitol | Sigma Aldrich |
| 준비예 6 | Succinamide | Sigma Aldrich |
| 구분 | 결정핵제 | 결정핵제 첨가량 (phr) |
고화 속도 |
필름 제조 적합 여부 |
Tm1
(℃) |
Tm2
(℃) |
Tc
(℃) |
Tcc
(℃) |
△Hc
(J/g) |
| 실시예1 | Trimethylolethane | 3 | 7~15초 | ◎ | 140 | 160 | 66 | - | 33 |
| 실시예2 | Trimethylolpropane | 3 | 35초 | ○ | 142 | 160 | 75 | - | 63 |
| 비교예1 | Cyanuric Acid | 3 | 40초 | ○ | 153 | 164 | 104 | - | 51 |
| 비교예2 | - | - | 5분 이상 | × | 146 | 163 | 84 | - | 50 |
| 비교예3 | Xylitol | 3 | 4분 이상 | × | 142 | 159 | 43 | 47 | 9 |
| 비교예4 | D-Sorbitol | 3 | 4분 이상 | × | 140 | 160 | 59 | 47 | 20 |
| 비교예5 | Succinamide | 3 | 2분 이내 | △ | 154 | 164 | 108 | - | 50 |
| 구분 | 1일 후 | 7일 후 | 14일 후 | |||
| 파단강도 (MPa) |
신율 (%) |
파단강도 (MPa) |
신율 (%) |
파단강도 (MPa) |
신율 (%) |
|
| 실시예 1 | 35 | 11 | 35 | 8 | 36 | 4 |
| 실시예 2 | 34 | 15 | 34 | 9 | 35 | 6 |
| 비교예 1 | 35 | 18 | 35 | 10 | 35 | 7 |
| 비교예 2 | 31 | 300 | 33 | 123 | 34 | 21 |
| 비교예 3 | 31 | 80 | 33 | 50 | 35 | 21 |
| 비교예 4 | 31 | 75 | 32 | 74 | 35 | 15 |
| 비교예 5 | 32 | 45 | 33 | 19 | 35 | 8 |
Claims (12)
- 하이드록시에틸기를 3개 이상 갖는 지방족 화합물을 포함하는, 생분해성 수지용 결정핵제.
- 제 1 항에 있어서,상기 지방족 화합물이 트리메틸올에탄(trimethylolethane), 트리메틸올프로판(trimethylolpropane) 및 트리펜타에리트리톨(tripentaerythritol)로 이루어진 군에서 선택된 1종 이상인, 생분해성 수지용 결정핵제.
- 제 1 항에 따른 생분해성 수지용 결정핵제; 및폴리하이드록시알카노에이트(PHA)를 포함하는, 생분해성 수지 조성물.
- 제 4 항에 있어서,상기 폴리하이드록시알카노에이트(PHA)가 3-하이드록시부티레이트(3HB), 3-하이드록시헥사노에이트(3HH), 3-하이드록시프로피오네이트(3HP), 3-하이드록시발레레이트(3HV), 4-하이드록시부티레이트(4HB), 4-하이드록시헥사노에이트(4HH), 4-하이드록시프로피오네이트(4HP) 및 4-하이드록시발레레이트(4HV)로 이루어진 군에서 선택된 1종 이상의 모노머로부터 유래된 반복단위를 포함하는, 생분해성 수지 조성물.
- 제 4 항에 있어서,상기 폴리하이드록시알카노에이트(PHA)가 상기 폴리하이드록시알카노에이트(PHA) 총 중량을 기준으로, 4-하이드록시부티레이트(4HB)로부터 유래된 반복단위를 1 내지 50 중량%로 포함하는, 생분해성 수지 조성물.
- 제 4 항에 있어서,상기 폴리하이드록시알카노에이트(PHA)가 폴리 3-하이드록시부티레이트-co-3-하이드록시헥사노에이트 공중합체(P3HB-co-3HH), 폴리 3-하이드록시부티레이트-co-3-하이드록시발레레이트 공중합체(P3HB-co-3HV), 폴리 3-하이드록시부티레이트-co-3-하이드록시프로피오네이트 공중합체(P3HB-co-3HP), 폴리 3-하이드록시부티레이트-co-4-하이드록시부티레이트 공중합체(P3HB-co-4HB), 폴리 3-하이드록시부티레이트-co-4-하이드록시헥사노에이트 공중합체(P3HB-co-4HH), 폴리 3-하이드록시부티레이트-co-4-하이드록시발레레이트 공중합체(P3HB-co-4HV) 및 폴리 3-하이드록시부티레이트-co-4-하이드록시프로피오네이트 공중합체(P3HB-co-4HP)로 이루어진 군에서 선택되는 1종 이상을 포함하는, 생분해성 수지 조성물.
- 제 4 항에 있어서,상기 폴리하이드록시알카노에이트(PHA)가 폴리 3-하이드록시부티레이트-co-4-하이드록시부티레이트 공중합체(P3HB-co-4HB)인, 생분해성 수지 조성물.
- 제 8 항에 있어서,상기 폴리 3-하이드록시부티레이트-co-4-하이드록시부티레이트 공중합체(P3HB-co-4HB)가 상기 폴리 3-하이드록시부티레이트-co-4-하이드록시부티레이트 공중합체(P3HB-co-4HB) 총 중량을 기준으로, 4-하이드록시부티레이트(4HB)로부터 유래된 반복단위를 1 내지 50 중량%로 포함하고, 3-하이드록시부티레이트(3HB)로부터 유래된 반복단위를 50 내지 99 중량%로 포함하는, 생분해성 수지 조성물.
- 제 4 항에 있어서,상기 생분해성 수지용 결정핵제의 함량이 상기 폴리하이드록시알카노에이트(PHA) 100 중량부에 대하여 0.01 내지 30 중량부인, 생분해성 수지 조성물.
- 제 4 항의 생분해성 수지 조성물로부터 제조된, 생분해성 필름.
- 폴리하이드록시알카노에이트(PHA)와 혼합 시 하이드록시에틸기를 3개 이상 갖는 지방족 화합물의 생분해성 수지용 결정핵제 용도.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202480038229.6A CN121263474A (zh) | 2023-06-09 | 2024-06-10 | 用于可生物降解树脂的晶体成核剂和包含其的可生物降解树脂组合物 |
| EP24819634.7A EP4725986A1 (en) | 2023-06-09 | 2024-06-10 | Crystal nucleating agent for biodegradable resin and biodegradable resin composition comprising same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2023-0074509 | 2023-06-09 | ||
| KR1020230074509A KR20240174775A (ko) | 2023-06-09 | 2023-06-09 | 생분해성 수지용 결정핵제 및 이를 포함하는 생분해성 수지 조성물 |
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| KR (1) | KR20240174775A (ko) |
| CN (1) | CN121263474A (ko) |
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| WO (1) | WO2024253483A1 (ko) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110007185A (ko) * | 2008-04-15 | 2011-01-21 | 바스프 에스이 | 생분해성 폴리에스테르의 연속 제조 방법 |
| JP6318153B2 (ja) * | 2013-07-03 | 2018-04-25 | 株式会社カネカ | ポリエステル樹脂組成物および該樹脂組成物を含む成形体 |
| KR20210049226A (ko) * | 2019-10-24 | 2021-05-06 | 주식회사 삼양사 | 우수한 내가수분해성과 레이저 투과율을 갖는 열가소성 수지 조성물 및 이를 포함하는 성형품 |
| KR20210148523A (ko) * | 2020-05-29 | 2021-12-08 | 주식회사 대하맨텍 | 생활용품용 생분해성 캡슐 및 그 제조방법 |
| KR20230059925A (ko) * | 2021-10-26 | 2023-05-04 | 에이치디씨현대이피 주식회사 | 생분해성 수지 조성물 및 상기 조성물을 이용한 응용제품 |
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| JPS5645176U (ko) | 1979-09-17 | 1981-04-23 | ||
| JP3405624B2 (ja) | 1995-09-29 | 2003-05-12 | 株式会社東芝 | 静止衛星のgpsオーバーレイシステム |
| CN102027052A (zh) | 2008-04-17 | 2011-04-20 | 梅塔玻利克斯公司 | 用于聚羟基烷酸酯的成核剂 |
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2023
- 2023-06-09 KR KR1020230074509A patent/KR20240174775A/ko not_active Ceased
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- 2024-06-07 TW TW113121269A patent/TW202502970A/zh unknown
- 2024-06-10 CN CN202480038229.6A patent/CN121263474A/zh active Pending
- 2024-06-10 WO PCT/KR2024/007862 patent/WO2024253483A1/ko not_active Ceased
- 2024-06-10 EP EP24819634.7A patent/EP4725986A1/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110007185A (ko) * | 2008-04-15 | 2011-01-21 | 바스프 에스이 | 생분해성 폴리에스테르의 연속 제조 방법 |
| JP6318153B2 (ja) * | 2013-07-03 | 2018-04-25 | 株式会社カネカ | ポリエステル樹脂組成物および該樹脂組成物を含む成形体 |
| KR20210049226A (ko) * | 2019-10-24 | 2021-05-06 | 주식회사 삼양사 | 우수한 내가수분해성과 레이저 투과율을 갖는 열가소성 수지 조성물 및 이를 포함하는 성형품 |
| KR20210148523A (ko) * | 2020-05-29 | 2021-12-08 | 주식회사 대하맨텍 | 생활용품용 생분해성 캡슐 및 그 제조방법 |
| KR20230059925A (ko) * | 2021-10-26 | 2023-05-04 | 에이치디씨현대이피 주식회사 | 생분해성 수지 조성물 및 상기 조성물을 이용한 응용제품 |
Also Published As
| Publication number | Publication date |
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| TW202502970A (zh) | 2025-01-16 |
| CN121263474A (zh) | 2026-01-02 |
| EP4725986A1 (en) | 2026-04-15 |
| KR20240174775A (ko) | 2024-12-17 |
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