WO2022176437A1 - 樹脂組成物およびその用途 - Google Patents
樹脂組成物およびその用途 Download PDFInfo
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- WO2022176437A1 WO2022176437A1 PCT/JP2022/000623 JP2022000623W WO2022176437A1 WO 2022176437 A1 WO2022176437 A1 WO 2022176437A1 JP 2022000623 W JP2022000623 W JP 2022000623W WO 2022176437 A1 WO2022176437 A1 WO 2022176437A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- resin composition
- propylene
- based polymer
- mass
- ethylene
- Prior art date
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Classifications
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- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/06—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
Definitions
- Polyolefin resins such as polyethylene and polypropylene are widely used as constituent materials for various food packaging materials because they are excellent in moldability, sanitation, water vapor barrier properties, etc., and are also inexpensive.
- polyolefin resins have high gas permeability
- PA polyamide
- PET polyester
- a polar resin such as polyethylene terephthalate
- polyolefin resins have poor adhesion to polar resins
- graft-modified polyethylene, polypropylene, etc. are used as the adhesive layer
- polyolefin resins containing graft-modified polyethylene, polypropylene, etc. are used as polyolefin resins. in use.
- Food packaging materials composed of such laminates are produced by melt (co)extrusion molding such as casting, inflation, and extrusion coating. In order to improve the productivity of food packaging materials, efforts are being made to increase the speed of the molding process. Examples exist.
- Patent Document 1 discloses that the molding stability of a polypropylene film is improved by blending a polypropylene-based resin with a high-melt-tension polypropylene-based resin. It is a description about melt film stability during molding, and does not refer to high-speed moldability.
- Patent Documents 2 and 3 disclose an adhesive resin composition capable of high-speed lamination molding.
- the adhesive resin composition wraps around the edges of the film during co-extrusion film molding, if a "wrapping phenomenon" occurs, the film may stick to chill rolls and guide rolls, making it impossible to increase the molding speed.
- JP-A-2003-64193 Japanese Patent No. 5915253 Japanese Patent Application Laid-Open No. 2018-135488
- the object of the present invention is to have good high-speed moldability, low adhesion to chill rolls and guide rolls during film forming, and polar groups such as ethylene-vinyl alcohol copolymer (EVOH), polyamide (PA), and polyester.
- An object of the present invention is to obtain a resin composition having excellent adhesiveness to a resin (polar resin) possessed by the resin composition, and a laminate suitable for a food packaging film containing the resin composition.
- the present invention 75 to 100 parts by mass of the propylene-based polymer (A), 0 to 25 masses of a copolymer (B) of at least one ⁇ -olefin selected from ⁇ -olefins having 3 to 20 carbon atoms and ethylene satisfying the following requirements (b-1) and (b-2) Part [However, the total of (A) and (B) shall be 100 parts by mass.]
- a resin composition containing The propylene-based polymer (A) is at least partially modified with a polar compound, and The present invention relates to a resin composition characterized by satisfying the following requirements (1) to (3).
- (b-1) The content of structural units derived from ethylene is 50 to 99 mol%, and the content of structural units derived from ⁇ -olefins having 3 to 20 carbon atoms is 1 to 50 mol%. (provided that the sum of the content of structural units derived from ethylene and the content of structural units derived from ⁇ -olefin is 100 mol%), (b-2) Melt flow rate (MFR; 190° C., 2.16 kg load) measured by ASTM D1238 is in the range of 0.1 to 50 g/10 min. (1) Melt flow rate (MFR) measured at a temperature of 230° C. and a load of 2.16 kg is in the range of 1 to 100 g/10 minutes. (2) has a density in the range of 0.89 to 0.93 g/ cm3 ; (3) Melt tension measured at 230° C. is 10.0 mN or less.
- the resin composition of the present invention has good high-speed moldability, low adhesiveness to chill rolls and guide rolls during film forming, and ethylene-vinyl alcohol copolymer (EVOH), polyamide (PA), polyester ( For example, it is characterized by excellent adhesion to resins having polar groups (polar resins) such as polyethylene terephthalate (PET).
- EVOH ethylene-vinyl alcohol copolymer
- PA polyamide
- PET polyethylene terephthalate
- the resin composition of the present invention comprises a propylene-based polymer (A) and an ethylene/ ⁇ -olefin copolymer (B) (hereinafter, the copolymer is also referred to as “ethylene/ ⁇ -olefin copolymer (B)”). .).
- the propylene-based polymer (A) which is one of the components constituting the resin composition of the present invention, can satisfy the following requirements (1) to (4).
- the melt flow rate (MFR) measured at a temperature of 230° C. and a load of 2.16 kg is in the range of 1 to 100 g/10 minutes, preferably 1 to 50 g/10 minutes, more preferably 1 to 30 g/10 minutes.
- MFR of the propylene-based polymer (A) satisfies the above range, a molded article having good extrudability and excellent surface appearance can be obtained.
- the density is in the range of 0.89-0.93 g/cm 3 , preferably 0.89-0.92 g/cm 3 , more preferably 0.90-0.92 g/cm 3 .
- the density of the propylene-based polymer (A) satisfies the above range, the adhesion to chill rolls and guide rolls during film forming is low, and the forming stability is excellent.
- the melt tension measured at 230° C. is in the range of 10 mN or less, preferably 9.5 mN or less.
- the melt tension of the propylene-based polymer (A) is 10 mN or less, the pulsation of the melt-extruded melt curtain is less likely to occur when the film take-up speed is increased, resulting in excellent high-speed moldability.
- the propylene-based polymer (A) according to the present invention is at least partially modified with a polar compound, preferably modified (preferably graft-modified) with an unsaturated carboxylic acid or a derivative thereof.
- the phrase "at least partially modified with a polar compound” means a mixture (composition) of an unmodified propylene-based polymer and a propylene-based polymer modified with a polar compound, and the propylene-based polymer (A). is entirely modified with a polar compound, and "at least part” means that the entire propylene-based polymer (A) according to the present invention is not necessarily modified with a polar compound. This indicates that there is no need to
- the modified amount of the polar compound (graft amount of the polar compound) in the propylene-based polymer (A) according to the present invention is 0.01 to 10% by mass, more preferably 0.02 to 5% by mass, still more preferably 0.02% to 5% by mass. 04 to 1% by mass.
- the propylene-based polymer (A) according to the present invention is a propylene-based polymer (A) entirely modified with a polar compound
- the propylene-based polymer modified with a polar compound and unmodified propylene It may be a mixture (composition) with a system polymer, and in the case of a mixture, it is necessary that the modified amount of the polar compound in the mixture satisfies the above range.
- the propylene-based polymer (A) according to the present invention is a mixture of a propylene-based polymer modified with a polar compound and an unmodified propylene-based polymer
- the mixture satisfies the requirements (1) to It is preferable to satisfy (3), and more preferably to satisfy the following requirements (5) to (7). It is not necessary to satisfy all of (1) to (3) and requirements (5) to (7) below.
- the propylene-based polymer (A) according to the present invention is a mixture of a polar compound-modified propylene-based polymer and an unmodified propylene-based polymer
- the polar compound-modified propylene The amounts of the propylene-based polymer and the unmodified propylene-based polymer are not particularly limited, and can be appropriately determined according to the amount of modification of the propylene-based polymer modified with the polar compound.
- the propylene-based polymer (A) according to the present invention has excellent adhesion to polar resins such as ethylene-vinyl alcohol copolymer (EVOH), polyamide (PA), polyester, etc., by satisfying the above range of modification amount.
- polar resins such as ethylene-vinyl alcohol copolymer (EVOH), polyamide (PA), polyester, etc.
- EVOH ethylene-vinyl alcohol copolymer
- PA polyamide
- polyester etc.
- the propylene-based polymer is modified using a polar compound to adjust the amount of modification to the above range.
- a propylene-based polymer (A) can be prepared by mixing a propylene-based polymer obtained by increasing the amount with an unmodified propylene-based polymer and adjusting the amount of modification within the above range to obtain the propylene-based polymer (A).
- the propylene-based polymer is dissolved in an organic solvent, and then a polar compound such as an unsaturated carboxylic acid or a derivative thereof is added to the resulting solution. And if necessary, a radical initiator such as an organic peroxide is added, and the reaction is usually carried out at a temperature of 60 to 350° C., preferably 80 to 190° C., for 0.5 to 15 hours, preferably 1 to 10 hours.
- a polar compound such as an unsaturated carboxylic acid or a derivative thereof
- a radical initiator such as an organic peroxide
- a propylene-based polymer, an unsaturated carboxylic acid or a derivative thereof and, if necessary, a radical initiator such as an organic peroxide are added without a solvent, and the propylene-based polymer is usually A method of reacting at a temperature above the melting point of coalescence, preferably at 160 to 350° C. for 0.5 to 10 minutes can be adopted.
- the amount of graft modification of the propylene-based polymer (A) is determined by measuring the amount of structural units derived from a polar compound such as an unsaturated carboxylic acid or a derivative thereof (amount of graft modification) using an infrared absorption spectrometer. The intensity of the peak (1790 cm -1 when maleic anhydride was used) was measured and quantified using a previously prepared calibration curve.
- the propylene-based polymer (A) according to the present invention preferably satisfies the following requirement (5).
- the propylene-based polymer (A) according to the present invention preferably has a melt tension measured at 250° C. of 7 mN or less, more preferably 6.9 mN or less, still more preferably 6.8 mN or less.
- the propylene-based polymer (A) whose melt tension measured at 250°C satisfies the above range, is excellent in high-speed moldability because the pulsation of the melt-extruded melt curtain is less likely to occur when the film take-up speed is increased.
- the melt tension of the propylene-based polymer (A) according to the invention was measured by the following measuring method. Using a Capilograph 1D manufactured by Toyo Seiki Seisakusho (cylinder diameter 9.55 mm, cylinder effective length 250 mm), using an orifice with a nozzle diameter of 2.095 mm and a length of 8.0 mm, the propylene-based polymer (A) was heated to a set temperature of 230. °C and 250 °C, melt extruded at a piston moving speed of 15 m / min, the melt extruded strand was taken off at a take-off speed of 15 m / min for a certain period of time, and the average melt tension within the measurement time was taken as the melt tension (mN).
- the propylene-based polymer (A) according to the present invention preferably satisfies requirement (6) below.
- the propylene-based polymer (A) according to the present invention preferably has a crystallization peak measured by a differential scanning calorimeter (DSC) of 120 to 135°C, more preferably 120 to 132°C, still more preferably 120 to 130°C. in the range of
- the propylene-based polymer (A) having a crystallization peak satisfying the above range facilitates solidification of the melt-extruded melt curtain during film forming, and is excellent in forming stability.
- the propylene-based polymer (A) according to the present invention preferably satisfies the following requirement (7).
- the propylene-based polymer (A) according to the present invention preferably has a difference between the crystallization peak and the melting peak measured by a differential scanning calorimeter (DSC) of 35°C or more, more preferably 36°C or more, and more preferably It is in the range of 37°C or higher.
- DSC differential scanning calorimeter
- the propylene-based polymer (A) in which the difference between the crystallization peak and the melting peak satisfies the above range, has excellent adhesion to polar resins such as ethylene-vinyl alcohol copolymer (EVOH), polyamide (PA), and polyester.
- polar resins such as ethylene-vinyl alcohol copolymer (EVOH), polyamide (PA), and polyester.
- the propylene-based polymer (A) according to the present invention can be a propylene homopolymer or a copolymer of propylene and at least one ⁇ -olefin having 2 to 20 carbon atoms other than propylene.
- ⁇ -olefins having 2 to 20 carbon atoms other than propylene include ethylene, 1-butene, 1-pentene, 1-hexene, 4-methyl-1-pentene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene, 1-octadecene, 1-eicosene, etc., and ethylene or an ⁇ -olefin having 4 to 10 carbon atoms are preferred.
- the copolymer of propylene and these ⁇ -olefins may be a random copolymer or a block copolymer.
- the constituent units derived from these ⁇ -olefins can be contained in the copolymer of ⁇ -olefin and propylene in a proportion of 35 mol % or less, preferably 30 mol % or less.
- the propylene-based polymer (A) according to the present invention is not limited to one type, and may be a mixture (composition) of two or more types.
- the propylene-based polymer (A) according to the present invention is a composition of two or more kinds, the composition preferably satisfies the above requirements.
- the method for producing the propylene-based polymer (A) according to the present invention is not particularly limited, and examples include well-known methods using well-known catalysts such as Ziegler-Natta catalysts and metallocene-based catalysts.
- the propylene-based polymer (A) according to the present invention may have either an isotactic structure or a syndiotactic structure. structure can be selected.
- the ethylene/ ⁇ -olefin copolymer (B) which is another component constituting the resin composition of the present invention, is composed of ethylene and 3 carbon atoms that satisfy the following requirements (b-1) and (b-2). It is a copolymer with at least one ⁇ -olefin selected from ⁇ 20 ⁇ -olefins.
- the content of structural units derived from ethylene is in the range of 50 to 99 mol%, preferably 70 to 95 mol%, more preferably 75 to 90 mol%, and from ⁇ -olefins having 3 to 20 carbon atoms
- the content of the structural unit derived is in the range of 1 to 50 mol%, preferably 5 to 30 mol%, more preferably 10 to 25 mol% (however, the content of the structural unit derived from ethylene and the ⁇ -olefin and the content of the structural units derived from is 100 mol%).
- the resin composition containing the ethylene/ ⁇ -olefin copolymer (B) has good high-speed moldability and can be used as a chill roll or guide during film formation. Low adhesion to rolls.
- Melt flow rate (MFR; 190°C, 2.16 kg load) measured by ASTM D1238 is 0.1 to 50 g/10 minutes, preferably 0.1 to 35 g/10 minutes, more preferably 1 to 35 g/10 minutes in the range.
- the method for producing the ethylene/ ⁇ -olefin copolymer (B) according to the present invention is not particularly limited, and examples include known methods using known catalysts such as Ziegler-Natta catalysts and metallocene catalysts. be done.
- the resin composition of the present invention comprises 75 to 100 parts by mass, preferably 80 to 100 parts by mass, more preferably 90 to 100 parts by mass of the propylene-based polymer (A) and the ethylene/ ⁇ -olefin. 0 to 25 parts by mass, preferably 0 to 20 parts by mass, more preferably 0 to 10 parts by mass of polymer (B) [provided that the total of (A) and (B) is 100 parts by mass. ] is a resin composition containing.
- the propylene-based polymer (A) contained in the resin composition of the present invention is a mixture of a propylene-based polymer modified with a polar compound and an unmodified propylene-based polymer
- the propylene-based polymer The amount of the propylene-based polymer modified with a polar compound in the coalescence (A) is usually 1 to 25 parts by mass or 1 to 25% by mass, preferably 2 to 20 parts by mass or 2 to 20% by mass, and more It is preferably in the range of 3 to 15 parts by weight or 3 to 15% by weight.
- the resin composition of the present invention satisfies the following requirements (1) to (3).
- the melt flow rate (MFR) measured at a temperature of 230° C. and a load of 2.16 kg is in the range of 1 to 100 g/10 minutes, preferably 1 to 50 g/10 minutes, more preferably 1 to 30 g/10 minutes.
- MFR of the resin composition satisfies the above range, a molded article having good extrudability and excellent surface appearance can be obtained.
- the density is in the range of 0.89-0.93 g/cm 3 , preferably 0.89-0.92 g/cm 3 , more preferably 0.90-0.92 g/cm 3 .
- the density of the resin composition satisfies the above range, it is possible to obtain a resin composition having low adhesion to chill rolls and guide rolls during film forming and excellent forming stability.
- the melt tension measured at 230° C. is in the range of 10 mN or less or 10.0 mN or less, preferably 9.5 mN or less, more preferably 9.1 mN or less.
- the melt tension of the resin composition measured at 230 ° C. is the propylene polymer (A), which tends to have a relatively low melt tension, and the ethylene / ⁇ -olefin copolymer, which tends to have a relatively high melt tension.
- the blending amount of the coalescence (B) may be changed, or when the propylene-based polymer (A) is a composition of two or more types, the blending amount of each propylene-based polymer may be changed, or a crystal nucleating agent to be described later may be added. It can be controlled by changing the presence/absence of the added amount, the type of the crystal nucleating agent, and the like.
- the resin composition of the present invention preferably satisfies requirement (4) below.
- the resin composition of the present invention preferably has a melt tension measured at 250° C. of 7 mN or less or 7.0 mN or less, more preferably 6.9 mN or less, still more preferably 6.8 mN or less.
- a resin composition having a melt tension measured at 250° C. that satisfies the above range is excellent in high-speed moldability because the pulsation of the melt-extruded melt curtain is less likely to occur during film molding.
- the melt tension of the resin composition measured at 250°C can be controlled by the same method as the method for controlling the melt tension of the resin composition measured at 230°C.
- the measurement of the melt tension of the resin composition of the present invention is the same as the method of measuring the melt tension of the propylene-based polymer (A).
- the resin composition of the present invention preferably satisfies the following requirement (5).
- the resin composition of the present invention preferably has a crystallization peak derived from the propylene-based polymer (A) measured by a differential scanning calorimeter (DSC) of 120 to 135°C, more preferably 120 to 132°C. More preferably, it is in the range of 120-130°C.
- a resin composition having a crystallization peak that satisfies the above range facilitates solidification of a melt-extruded melt curtain during film forming, and is excellent in forming stability.
- the resin composition of the present invention preferably satisfies requirement (6) below.
- the resin composition of the present invention preferably has a crystallization peak derived from the propylene-based polymer (A) and a The difference in melting peaks derived from coalescence (A) is 35°C or more, more preferably 36°C or more, and still more preferably 37°C or more.
- a resin composition in which the difference between the crystallization peak and the melting peak satisfies the above range has excellent adhesion to polar resins such as ethylene-vinyl alcohol copolymer (EVOH), polyamide (PA), and polyester.
- polar resins such as ethylene-vinyl alcohol copolymer (EVOH), polyamide (PA), and polyester.
- the crystallization temperature (crystallization peak) and melting point (melting peak) of the resin composition of the present invention are measured according to the crystallization temperature (crystallization peak) and melting point (melting peak) of the propylene-based polymer (A). ) is the same as the measurement method of
- the resin composition of the present invention preferably contains a crystal nucleating agent in addition to the propylene-based polymer (A) and the ethylene/ ⁇ -olefin copolymer (B).
- crystal nucleating agents that can be added to the resin composition of the present invention include sodium benzoate, bisbenzylidene sorbitol, bis(p-methylbenzylidene) sorbitol, bis(p-ethylbenzylidene) sorbitol, and sodium-2.
- the resin composition of the present invention contains a crystal nucleating agent
- a resin composition containing a crystal nucleating agent has a high solidification speed of a melt-extruded melt curtain and is excellent in high-speed moldability. Also, a molded article having excellent transparency can be obtained. Furthermore, a resin composition containing a crystal nucleating agent tends to have a lower melt tension than a resin composition containing no crystal nucleating agent.
- the resin composition of the present invention contains, in addition to the crystal nucleating agent, an antioxidant, an ultraviolet absorber, a neutralizing agent, a light stabilizer, an antistatic agent, an antiblocking agent, and a lubricant, as long as the object of the present invention is not impaired. , odor adsorbents, antibacterial agents, pigments, inorganic and organic fillers, and various synthetic resins.
- the resin composition of the present invention can be used alone by known methods such as calendar molding, extrusion molding, injection molding, inflation molding, blow molding, extrusion blow molding, injection blow molding, press molding, vacuum molding, and foam molding. It can be used, for example, in sheets, films, hollow moldings, etc. by thermoforming methods.
- the resin composition of the present invention can also be laminated (bonded) with a substrate to form a laminate.
- the base material that can be laminated with the resin composition of the present invention is not particularly limited, and is not particularly limited as long as it is sheet-like, film-like, tray- or container-like and can be used as a laminate.
- substrates include polyester films such as polyethylene terephthalate and polyethylene naphthalate, polycarbonate films, polyamide films such as nylon 6 and nylon 66, ethylene-vinyl alcohol copolymer films, polyvinyl alcohol films, and polyvinyl chloride.
- Thermoplastic resin films such as vinyl films and polyvinylidene chloride films, sheets made of these thermoplastic resins, thermoformed trays or cup-shaped containers, aluminum foil, paper, etc. is mentioned.
- thermoplastic resin film may be an unstretched film or a uniaxially or biaxially stretched film.
- the substrate is a thermoplastic resin
- the resin composition of the present invention and the thermoplastic resin are co-extruded to form a laminate, and the resin of the present invention is applied to a previously obtained thermoplastic resin film or sheet.
- a laminate can be obtained by various known methods such as a method of forming a body. Among the methods for obtaining a laminate, a method of co-extrusion molding the resin composition of the present invention and a thermoplastic resin to form a laminate is preferred.
- the laminate containing the resin composition of the present invention can be used in various known applications, for example, food packaging films, cups, bottles, trays, tubes, food containers such as BIB (back-in-box), food fields, non-food Applications in various fields can be mentioned.
- polyester films such as polyethylene terephthalate and polyethylene naphthalate, polycarbonate films, polyamide films such as nylon 6 and nylon 66, ethylene-vinyl alcohol copolymer films, and polyvinyl alcohol films were used. It also has excellent gas barrier properties.
- a laminate containing the resin composition of the present invention can also be used as a packaging material.
- a packaging material it is suitably used as a material (packaging material) for food and beverages, cosmetics, miscellaneous goods, packaging containers and packaging bags such as food packaging, filling packaging, and fiber packaging.
- the packaging container and packaging bag may be obtained by molding a film-like or sheet-like laminate into a desired shape by vacuum forming, pressure forming, or the like, and the laminate is formed into the desired packaging container and packaging bag shape. It may be obtained by manufacturing as follows.
- a packaging container and a packaging bag in which contents are packaged can be obtained, for example, by filling the contents into the container or bag, then covering the container with a known film as a lid material, and heat-sealing the top or sides of the container.
- the container and bag are suitable for packaging instant noodles, miso, jelly, pudding, snacks, and the like.
- Propylene-based polymer (A) The propylene-based polymer (A) used in the examples and comparative examples was used by appropriately mixing the following PP-1, PP-2 and modified PP.
- Milliken's product name Millad NX8000 (nonitol-based crystal nucleating agent) was used.
- MFR Melt flow rate
- ⁇ Crystallization temperature and melting point> The crystallization temperature and melting point were measured using a differential scanning calorimeter (DSC) as follows. Approximately 5 mg of sample was sealed in an aluminum pan and heated from room temperature at 10°C/min to 230°C and the sample was held at 230°C for 10 minutes for complete melting. It was then cooled at 10°C/min to -20°C and after 10 minutes at -20°C, the sample was reheated at 10°C/min to 230°C. The peak temperature detected in the cooling test was adopted as the crystallization temperature (Tc), and the peak temperature in this second heating test was adopted as the melting point (Tm).
- DSC differential scanning calorimeter
- ⁇ Amount of graft modification The amount of structural units derived from unsaturated carboxylic acid and/or derivatives thereof (amount of graft modification) was measured by an infrared absorption spectrometer to determine the peak derived from the structural units (1790 cm -1 when maleic anhydride was used). Intensities were measured and quantified using a previously prepared calibration curve.
- the set temperature of the T-die was 220°C.
- Adhesive strength of laminate The adhesive strength (unit: N/15 mm) of the obtained laminate was measured at room temperature of 23° C. by the T-peel method using a tensile tester. The crosshead speed was 300 mm/min.
- Example 1 As the propylene-based polymer (A), the PP-1 (60 parts by mass), the PP-2 (36 parts by mass) and the modified PP (4 parts by mass) were extruded at 230°C using a single screw extruder.
- the resin composition 1 was obtained by melt-kneading.
- the amount of graft modification of the propylene-based polymer (A) in Resin Composition 1 was 0.04% by mass.
- Example 2 to 5 and Comparative Examples 1 to 3 In Examples 2 to 5 and Comparative Examples 1 to 3, resin compositions were produced in the same manner as in Example 1 according to the formulations shown in Tables 1 and 2, respectively.
- Example 2 The composition obtained in Example 2 was used as Resin Composition 2, and the amount of graft modification of the propylene-based polymer (A) in Resin Composition 2 was 0.08% by mass.
- the composition obtained in Example 3 was used as Resin Composition 3, and the amount of graft modification of the propylene-based polymer (A) in Resin Composition 3 was 0.04% by mass.
- the composition obtained in Example 4 was used as Resin Composition 4, and the amount of graft modification of the propylene-based polymer (A) in Resin Composition 4 was 0.04% by mass.
- the composition obtained in Example 5 was used as Resin Composition 5, and the amount of graft modification of the propylene-based polymer (A) in Resin Composition 5 was 0.09% by mass.
- the composition obtained in Comparative Example 1 was used as Resin Composition 6, and the amount of graft modification of the propylene-based polymer (A) in Resin Composition 6 was 0.04% by mass.
- the composition obtained in Comparative Example 2 was used as Resin Composition 7, and the amount of graft modification of the propylene-based polymer (A) in Resin Composition 7 was 0.04% by mass.
- the composition obtained in Comparative Example 3 was used as Resin Composition 8, and the amount of graft modification of the propylene-based polymer (A) in Resin Composition 8 was 0.04% by mass.
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Abstract
Description
プロピレン系重合体(A)を75~100質量部と、
下記要件(b-1)および(b-2)を満たすエチレンと炭素原子数3~20のα-オレフィンから選ばれる少なくとも1種のα‐オレフィンとの共重合体(B)を0~25質量部〔ただし、(A)および(B)の合計を100質量部とする。〕とを含む樹脂組成物であって、
当該プロピレン系重合体(A)が、少なくとも一部が極性化合物で変性されてなり、且つ、
当該樹脂組成物が下記要件(1)~(3)を満たすことを特徴とする樹脂組成物に係る。
(b-1)エチレンから導かれる構成単位の含有量が50~99モル%であり、かつ、炭素原子数3~20のα-オレフィンから導かれる構成単位の含有量が1~50モル%である(ただし、エチレンから導かれる構成単位の含有量とα-オレフィンから導かれる構成単位の含有量との合計を100モル%とする。)、
(b-2)ASTM D1238で測定したメルトフローレート(MFR;190℃、2.16kg荷重)が0.1~50g/10minの範囲にある。
(1)温度230℃、荷重2.16kgで測定されるメルトフローレート(MFR)が1~100g/10分の範囲にある、
(2)密度が0.89~0.93g/cm3の範囲にある、
(3)230℃で測定される溶融張力が10.0mN以下である。
本発明の樹脂組成物を構成する成分の一つであるプロピレン系重合体(A)は、下記要件(1)~(4)を満たすことができる。
温度230℃、荷重2.16kgで測定されるメルトフローレート(MFR)が1~100g/10分、好ましくは1~50g/10分、より好ましくは1~30g/10分の範囲にある。
プロピレン系重合体(A)のMFRが上記範囲を満たすことにより、押出性が良好で、表面外観に優れる成形体が得られる。
密度が0.89~0.93g/cm3、好ましくは0.89~0.92g/cm3、より好ましくは0.90~0.92g/cm3の範囲にある。
プロピレン系重合体(A)の密度が上記範囲を満たすことにより、フィルム成形時のチルロールやガイドロールへの粘着性が低く、成形安定性に優れる。
230℃で測定される溶融張力が10mN以下、好ましくは9.5mN以下の範囲にある。
プロピレン系重合体(A)の溶融張力が10mN以下であると、フィルム引取速度を上げた際に、溶融押出されたメルトカーテンの脈動が発生し難く、高速成形性に優れる。
本発明に係るプロピレン系重合体(A)は、少なくとも一部が極性化合物で変性、好ましくは不飽和カルボン酸もしくはその誘導体で変性(好ましくはグラフト変性)されてなる。
本発明に係るプロピレン系重合体(A)は、好ましくは下記要件(5)を満たす。
本発明に係るプロピレン系重合体(A)は、好ましくは250℃で測定される溶融張力が7mN以下、より好ましくは6.9mN以下、さらに好ましくは6.8mN以下の範囲にある。
東洋精機製作所製キャピログラフ1D(シリンダー径9.55mm、シリンダー有効長さ250mm)にて、ノズル径2.095mm、長さ8.0mmのオリフィスを用い、プロピレン系重合体(A)を設定温度、230℃および250℃、ピストン移動速度15m/分で溶融押出し、溶融押出しされたストランドを引き取り速度15m/分の条件で一定時間引き取り、測定時間内の平均溶融張力を溶融張力(mN)とした。
本発明に係るプロピレン系重合体(A)は、好ましくは下記要件(6)を満たす。
本発明に係るプロピレン系重合体(A)は、好ましくは示差走査型熱量計(DSC)により測定した結晶化ピークが120~135℃、より好ましくは120~132℃、さらに好ましくは120~130℃の範囲にある。
本発明に係るプロピレン系重合体(A)は、好ましくは下記要件(7)を満たす。
本発明に係るプロピレン系重合体(A)は、好ましくは示差走査型熱量計(DSC)により測定した結晶化ピークと、融解ピークの差が35℃以上、より好ましくは36℃以上、さらに好ましくは37℃以上の範囲にある。
本発明の樹脂組成物を構成する成分の他の成分であるエチレン・α‐オレフィン共重合体(B)は、下記要件(b-1)および(b-2)を満たすエチレンと炭素原子数3~20のα‐オレフィンから選ばれる少なくとも1種のα‐オレフィンとの共重合体である。
エチレンから導かれる構成単位の含有量が50~99モル%、好ましくは70~95モル%、より好ましくは75~90モル%の範囲であり、かつ、炭素原子数3~20のα-オレフィンから導かれる構成単位の含有量が1~50モル%、好ましくは5~30モル%、より好ましくは10~25モル%の範囲である(ただし、エチレンから導かれる構成単位の含有量とα-オレフィンから導かれる構成単位の含有量との合計を100モル%とする。)。
ASTM D1238で測定したメルトフローレート(MFR;190℃、2.16kg荷重)が0.1~50g/10分、好ましくは0.1~35g/10分、より好ましくは1~35g/10分の範囲にある。
プロピレン系重合体(A)のα-オレフィンから導かれる構成単位、およびプロピレンから導かれる構成単位の含有割合の定量化、エチレン・α-オレフィン共重合体(B)のα-オレフィンから導かれる構成単位、およびエチレンから導かれる構成単位の含有割合の定量化は、13C-NMRにより以下の装置および条件にて行った。
本発明の樹脂組成物は、上記プロピレン系重合体(A)を75~100質量部、好ましくは80~100質量部、より好ましくは90~100質量部と、上記エチレン・α‐オレフィンとの共重合体(B)を0~25質量部、好ましくは0~20質量部、より好ましくは0~10質量部〔ただし、(A)および(B)の合計を100質量部とする。〕を含む樹脂組成物である。
さらに、本発明の樹脂組成物は、下記要件(1)~(3)を満たす。
温度230℃、荷重2.16kgで測定されるメルトフローレート(MFR)が1~100g/10分、好ましくは1~50g/10分、より好ましくは1~30g/10分の範囲にある。
樹脂組成物のMFRが上記範囲を満たすことにより、押出性が良好で、表面外観に優れる成形体が得られる。
密度が0.89~0.93g/cm3、好ましくは0.89~0.92g/cm3、より好ましくは0.90~0.92g/cm3の範囲にある。
樹脂組成物の密度が上記範囲を満たすことにより、フィルム成形時のチルロールやガイドロールへの粘着性が低く、成形安定性に優れる樹脂組成物が得られる。
230℃で測定される溶融張力が10mN以下または10.0mN以下、好ましくは9.5mN以下、より好ましくは9.1mN以下の範囲にある。
230℃で測定される樹脂組成物の溶融張力は、相対的に溶融張力が低い傾向にあるプロピレン系重合体(A)と、相対的に溶融張力が高い傾向にあるエチレン・α‐オレフィン共重合体(B)の配合量を変えたり、プロピレン系重合体(A)が二種以上の組成物である場合にはそれぞれのプロピレン系重合体の配合量を変えたり、後述する結晶核剤の添加の有無、添加量、結晶核剤の種類を変えたりすることなどによって制御できる。
〈要件(4)〉
本発明の樹脂組成物は、好ましくは250℃で測定される溶融張力が7mN以下または7.0mN以下、より好ましくは6.9mN以下、さらに好ましくは6.8mN以下の範囲にある。
250℃で測定される樹脂組成物の溶融張力は、230℃で測定される樹脂組成物の溶融張力の制御方法と同様の方法で制御することができる。
なお、本発明の樹脂組成物の溶融張力の測定は、上記、プロピレン系重合体(A)の溶融張力の測定方法と同じである。
本発明の樹脂組成物は、好ましくは下記要件(5)を満たす。
本発明の樹脂組成物は、好ましくは示差走査型熱量計(DSC)により測定した際のプロピレン系重合体(A)に由来する結晶化ピークが120~135℃、より好ましくは120~132℃、さらに好ましくは120~130℃範囲にある。
結晶化ピークが上記範囲を満たす樹脂組成物は、フィルム成形時に溶融押出されたメルトカーテンの固化が進行し易く、成形安定性に優れる。
〈要件(6)〉
本発明の樹脂組成物は、好ましくは、下記式で表される、示差走査型熱量計(DSC)により測定した際に、プロピレン系重合体(A)に由来する結晶化ピークと、プロピレン系重合体(A)に由来する融解ピークの差が35℃以上、より好ましくは36℃以上、さらに好ましくは37℃以上である。
〔プロピレン系重合体(A)に由来する融解ピーク(℃)〕―〔プロピレン系重合体(A)に由来する結晶化ピーク(℃)〕
本発明の樹脂組成物に加え得る結晶核剤としては、具体的には、例えば安息香酸ナトリウム、ビスベンジリデンソルビトール、ビス(p-メチルベンジリデン)ソルビトール、ビス(p-エチルベンジリデン)ソルビトール、ソジウム-2,2-メチレンビス(4,6-ジ-t-ブチルフェニル)ホスファイト、タルク、酸化チタン、アルミニウムヒドロキシージーp-t-ブチルベンゾエート、芳香族リン酸エステル塩、芳香族カルボン酸、D-グリセロ-L-グロ-ノニトール,7,8,9,-トリデオキシ-3,5:45-ビス-O-[(R-プロピルフェニル)メチレン]などのノニトール系核剤や、ロジン系核剤などが挙げられ、これらは単独で又は2種以上を混合して用いることができる。
本発明の樹脂組成物は、本発明の目的を損なわない限り、上記結晶核剤の他に、酸化防止剤、紫外線吸収剤、中和剤、光安定剤、帯電防止剤、アンチブロッキング剤、滑剤、臭気吸着剤、抗菌剤、顔料、無機質及び有機質の充填剤並びに種々の合成樹脂などの公知の添加剤を必要に応じて含有することができる。
また、本発明の樹脂組成物は、基材と積層して(貼り合わせて)積層体とすることもできる。
本発明の樹脂組成物と積層し得る基材は、特に限定はされず、例えば、シート状、フィルム状、トレーあるいは容器状のもので積層体として使用できるものあれば、特に限定されない。基材の例として、ポリエチレンテレフタレート、ポリエチレンナフタレートに代表されるポリエステルからなるフィルム、ポリカーボネートフィルム、ナイロン6、ナイロン66等からなるポリアミドフィルム、エチレン・ビニルアルコール共重合体フィルム、ポリビニルアルコールフィルム、ポリ塩化ビニルフィルム、ポリ塩化ビニリデンフィルム、等の熱可塑性樹脂フィルム、あるいはそれら熱可塑性樹脂からなるシート、更にはシートを熱成形したトレーあるいはカップ状の容器、アルミニウム箔、紙等から構成されるそれら形状物が挙げられる。
基材が熱可塑性樹脂である場合は、本発明の樹脂組成物と熱可塑性樹脂とを共押出し成形して積層体とする方法、予め得た熱可塑性樹脂のフィルムあるいはシートに、本発明の樹脂組成物を押出しコーティング(押出しラミネーション)して積層体とする方法、予め得た熱可塑性樹脂のフィルムあるいはシートと本発明の樹脂組成物のフィルムあるいはシートとを貼り合わせて(ドライラミネーションして)積層体とする方法など、種々公知の方法で積層体とし得る。積層体を得る方法の中では、本発明の樹脂組成物と熱可塑性樹脂とを共押出し成形して積層体とする方法が好ましい。
本発明の樹脂組成物を含む積層体は、種々公知の用途、例えば、食品包装用フィルムや、カップ、ボトル、トレー、チューブ、BIB(バックインボックス)等の食品容器などの食品分野、非食品分野への用途があげられる。また、基材として、ポリエチレンテレフタレート、ポリエチレンナフタレートに代表されるポリエステルからなるフィルム、ポリカーボネートフィルム、ナイロン6、ナイロン66等からなるポリアミドフィルム、エチレン・ビニルアルコール共重合体フィルム、ポリビニルアルコールフィルムを用いた場合はガスバリア性にも優れる。
本発明の樹脂組成物を含む積層体は、包装材料としても使用し得る。包装材料としては、飲食料品、化粧品、雑貨品や、食品包装、充填包装、繊維包装など包装容器および包装袋などの材料(包装材)として好適に用いられる。
実施例および比較例で用いたプロピレン系重合体(A)およびエチレン・α‐オレフィン共重合体(B)を以下に示す。なお、特に断らない限り、これらポリオレフィンは、いずれも常法に従い重合を行い調製した。
実施例および比較例で用いたプロピレン系重合体(A)は、以下のPP-1、PP-2および変性PPを適宜混合して用いた。
MFR=7g/10分、密度0.90g/cm3。
(1-2)PP-2:ホモポリプロピレン(プロピレン単独重合体)
MFR=3g/10分、密度0.90g/cm3。
(1-3)変性PP:無水マレイン酸変性ホモポリプロピレン
MFR=100g/10分、密度0.90g/cm3、無水マレイン酸グラフト量1.0質量%。
(2-1)EBR:エチレン・1-ブテン共重合体
MFR=4g/10分、密度0.89g/cm3、エチレン含量=88モル%、1-ブテン含量=12モル%。
結晶核剤として、Milliken社製 商品名:Millad NX8000(ノニトール系結晶核剤)を用いた。
<メルトフローレート(MFR)>
ASTM D 1238に従い、プロピレン系重合体は230℃、2.16kg荷重の下、エチレン系重合体は190℃、2.16kg荷重の下、MFRを測定した。
JIS K7112(密度勾配管法)に準拠して密度を測定した。
<エチレン・α‐オレフィン共重合体の組成>
エチレン・α‐オレフィン共重合体中のα-オレフィンから導かれる構成単位、およびエチレンから導かれる構成単位の含有割合の定量化は、13C-NMRにより以下の装置および条件にて行った。
結晶化温度および融点は、示差走査型熱量計(DSC)を用いて、次のように測定した。試料5mg程度をアルミニウムパン中に密封し、室温から10℃/分で230℃まで加熱し、その試料を、完全融解させるために230℃で10分間保持した。次いで10℃/分で-20℃まで冷却し、-20℃で10分間置いた後、その試料を10℃/分で230℃まで再度加熱した。冷却試験にて検出されたピーク温度を、結晶化温度(Tc)、この2度目の加熱試験でのピーク温度を、融点(Tm)として採用した。
不飽和カルボン酸および/またはその誘導体に由来する構成単位の量(グラフト変性量)は、赤外線吸収分析装置により、前記構成単位に由来するピーク(無水マレイン酸を用いた場合は1790cm-1)の強度を測定し、予め作成した検量線を用いて定量した。
下記方法で得られた実施例および比較例で得られた樹脂組成物を、Tダイ付き押出成形機(フィルム成形機)を用い、直径40mm、有効長さL/D=26のスクリューを用いて240℃で押出し、25℃に設定したチルロールで引き取って、単層40μmのフィルムを成形した。引き取り速度5m/分、10m/分および20m/分の3条件で単層フィルムを成形し、下記2つの基準によって成形性を判定した。
成形性〇:フィルム幅方向の脈動が発生しない
成形性△:フィルム幅方向の脈動が僅かに発生
成形性×:フィルム幅方向の脈動が発生
チルロールに対する粘着性
成形性〇:チルロール通過時にフィルム表面に剥離痕が発生しない
成形性△:チルロール通過時にフィルム表面に剥離痕が僅かに発生
成形性×:チルロール通過時にフィルム表面に剥離痕が著しく発生
三種三層Tダイ付き成形機(多層フィルム成形機)を用い、共押出成形によって、エチレン・ビニルアルコール共重合体(クラレ社製 エバールF101A、MFR(190℃,2.16kg)=1.6g/10分)、実施例および比較例で得られた樹脂組成物、およびポリプロピレン(プライムポリマー社製 プライムポリプロF327、MFR=7)から成る積層体(積層フィルム)を作製した。エチレン・ビニルアルコール共重合体は直径40mm、有効長さL/D=26のスクリューを用いて220℃で押出し、樹脂組成物は直径40mm、有効長さL/D=26のスクリューを用いて240℃で押出し、ポリプロピレンは直径50mm、有効長さL/D=28のスクリューを用いて240℃で押出した。Tダイの設定温度は220℃とした。スクリュー回転数を適宜調整して、引き取り速度5m/分にて、エチレン・ビニルアルコール共重合体/樹脂組成物/ポリプロピレン=40/40/160μmの積層体を作製した。
得られた積層体の接着力(単位:N/15mm)を、引張試験機を使用して、Tピール法にて、室温23℃で測定した。クロスヘッドスピードは300mm/分とした。
プロピレン系重合体(A)として、上記PP-1(60質量部)と、上記PP-2(36質量部)および上記変性PP(4質量部)とを、一軸押出機を用いて230℃で溶融混練し、樹脂組成物1を得た。
なお、樹脂組成物1におけるプロピレン系重合体(A)のグラフト変性量は、0.04質量%である。
実施例2~5、比較例1~3において、それぞれ表1~2に示した配合処方に従い、実施例1と同様の方法で樹脂組成物を製造した。
実施例3で得られた組成物を樹脂組成物3、および樹脂組成物3におけるプロピレン系重合体(A)のグラフト変性量0.04質量%。
実施例4で得られた組成物を樹脂組成物4、および樹脂組成物4におけるプロピレン系重合体(A)のグラフト変性量0.04質量%。
実施例5で得られた組成物を樹脂組成物5、および樹脂組成物5におけるプロピレン系重合体(A)のグラフト変性量0.09質量%。
比較例2で得られた組成物を樹脂組成物7、および樹脂組成物7におけるプロピレン系重合体(A)のグラフト変性量0.04質量%。
比較例3で得られた組成物を樹脂組成物8、および樹脂組成物8におけるプロピレン系重合体(A)のグラフト変性量0.04質量%。
Claims (12)
- プロピレン系重合体(A)を75~100質量部と、
下記要件(b-1)および(b-2)を満たすエチレンと炭素原子数3~20のα‐オレフィンから選ばれる少なくとも1種のα‐オレフィンとの共重合体(B)を0~25質量部
〔ただし、(A)および(B)の合計を100質量部とする。〕とを含む樹脂組成物であって、
当該プロピレン系重合体(A)が、少なくとも一部が極性化合物で変性されてなり、且つ
当該樹脂組成物が下記要件(1)~(3)を満たすことを特徴とする樹脂組成物。
(b-1)エチレンから導かれる構成単位の含有量が50~99モル%であり、かつ、炭素原子数3~20のα-オレフィンから導かれる構成単位の含有量が1~50モル%である(ただし、エチレンから導かれる構成単位の含有量とα-オレフィンから導かれる構成単位の含有量との合計を100モル%とする。)、
(b-2)ASTM D 1238で測定したメルトフローレート(MFR;190℃、2.16kg荷重)が0.1~50g/10minの範囲にある。
(1)温度230℃、荷重2.16kgで測定されるメルトフローレート(MFR)が1~100g/10分の範囲にある、
(2)密度が0.89~0.93g/cm3の範囲にある、
(3)230℃で測定される溶融張力が10.0mN以下である。 - 樹脂組成物が、プロピレン系重合体(A)を90~100質量部と共重合体(B)を0~10質量部〔ただし、(A)および(B)の合計を100質量部とする。〕含む請求項1に記載の樹脂組成物。
- プロピレン系重合体(A)中の極性化合物で変性されてなるプロピレン系重合体の量が、1~25質量%の範囲である、請求項1または2に記載の樹脂組成物。
- プロピレン系重合体(A)を変性してなる極性化合物が、不飽和カルボン酸もしくはその誘導体である請求項1~3のいずれか1項に記載の樹脂組成物。
- 樹脂組成物が、250℃で測定される溶融張力が7.0mN以下である請求項1~4のいずれか1項に記載の樹脂組成物。
- 樹脂組成物が、示差走査型熱量計(DSC)により測定した際のプロピレン系重合体(A)に由来する結晶化ピークが120~135℃の範囲にある、請求項1~5のいずれか1項に記載の樹脂組成物。
- 樹脂組成物が、下記式で表される、示差走査型熱量計(DSC)により測定した際のプロピレン系重合体(A)に由来する結晶化ピークと、プロピレン系重合体(A)に由来する融解ピークの差が35℃以上である、請求項1~6のいずれか1項に記載の樹脂組成物。
(プロピレン系重合体(A)に由来する融解ピーク(℃))―(プロピレン系重合体(A)に由来する結晶化ピーク(℃)) - 樹脂組成物が、結晶核剤を含む樹脂組成物である請求項1~7のいずれか1項に記載の樹脂組成物。
- 前記結晶核剤の含有量が、前記プロピレン系重合体(A)と前記エチレン・α‐オレフィン共重合体(B)の合計量:100質量部に対して、0.4質量部以下である、請求項8に記載の樹脂組成物。
- 前記結晶核剤が、ノニトール系結晶核剤である、請求項8または9に記載の樹脂組成物。
- 請求項1~10のいずれか1項に記載の樹脂組成物を含む層を有する積層体。
- 積層体が、食品包装用フィルムである、請求項11に記載の積層体。
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EP22755763.4A EP4296314A1 (en) | 2021-02-19 | 2022-01-12 | Resin composition and use thereof |
JP2023500616A JPWO2022176437A1 (ja) | 2021-02-19 | 2022-01-12 | |
US18/277,203 US20240117164A1 (en) | 2021-02-19 | 2022-01-12 | Resin composition and use thereof |
CN202280015319.4A CN116897187A (zh) | 2021-02-19 | 2022-01-12 | 树脂组合物及其用途 |
KR1020237027839A KR20230130732A (ko) | 2021-02-19 | 2022-01-12 | 수지 조성물 및 그의 용도 |
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JPH0233399A (ja) * | 1988-01-28 | 1990-02-02 | Jujo Paper Co Ltd | 耐水紙及びその製造方法 |
JPH08176359A (ja) * | 1994-12-27 | 1996-07-09 | Showa Denko Kk | ポリオレフィン系樹脂組成物及びシート |
JPH09328587A (ja) * | 1996-06-11 | 1997-12-22 | Gurando Polymer:Kk | 塗装性のあるブロー成形用ポリプロピレン組成物およびそのブロー成形体 |
JP2001294836A (ja) * | 2000-04-14 | 2001-10-23 | Mitsui Chemicals Inc | 接着性樹脂組成物および積層体 |
JP2003064193A (ja) | 2001-08-30 | 2003-03-05 | Sunallomer Ltd | ポリプロピレンフィルム |
JP2004099633A (ja) * | 2002-09-04 | 2004-04-02 | Idemitsu Petrochem Co Ltd | 変性ポリオレフィン組成物 |
JP2011021123A (ja) * | 2009-07-16 | 2011-02-03 | Prime Polymer Co Ltd | プロピレン系重合体組成物及びその製造方法 |
JP5915253B2 (ja) | 2011-02-25 | 2016-05-11 | 三菱化学株式会社 | 樹脂組成物及び積層体 |
JP2018135488A (ja) | 2017-02-23 | 2018-08-30 | Mcppイノベーション合同会社 | 接着性樹脂組成物及び積層体 |
Family Cites Families (1)
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JPS5915253U (ja) | 1982-07-21 | 1984-01-30 | 三菱電機株式会社 | 外扇形回転電機 |
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2022
- 2022-01-12 CN CN202280015319.4A patent/CN116897187A/zh active Pending
- 2022-01-12 EP EP22755763.4A patent/EP4296314A1/en active Pending
- 2022-01-12 WO PCT/JP2022/000623 patent/WO2022176437A1/ja active Application Filing
- 2022-01-12 JP JP2023500616A patent/JPWO2022176437A1/ja active Pending
- 2022-01-12 US US18/277,203 patent/US20240117164A1/en active Pending
- 2022-01-12 KR KR1020237027839A patent/KR20230130732A/ko unknown
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0233399A (ja) * | 1988-01-28 | 1990-02-02 | Jujo Paper Co Ltd | 耐水紙及びその製造方法 |
JPH08176359A (ja) * | 1994-12-27 | 1996-07-09 | Showa Denko Kk | ポリオレフィン系樹脂組成物及びシート |
JPH09328587A (ja) * | 1996-06-11 | 1997-12-22 | Gurando Polymer:Kk | 塗装性のあるブロー成形用ポリプロピレン組成物およびそのブロー成形体 |
JP2001294836A (ja) * | 2000-04-14 | 2001-10-23 | Mitsui Chemicals Inc | 接着性樹脂組成物および積層体 |
JP2003064193A (ja) | 2001-08-30 | 2003-03-05 | Sunallomer Ltd | ポリプロピレンフィルム |
JP2004099633A (ja) * | 2002-09-04 | 2004-04-02 | Idemitsu Petrochem Co Ltd | 変性ポリオレフィン組成物 |
JP2011021123A (ja) * | 2009-07-16 | 2011-02-03 | Prime Polymer Co Ltd | プロピレン系重合体組成物及びその製造方法 |
JP5915253B2 (ja) | 2011-02-25 | 2016-05-11 | 三菱化学株式会社 | 樹脂組成物及び積層体 |
JP2018135488A (ja) | 2017-02-23 | 2018-08-30 | Mcppイノベーション合同会社 | 接着性樹脂組成物及び積層体 |
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KR20230130732A (ko) | 2023-09-12 |
CN116897187A (zh) | 2023-10-17 |
EP4296314A1 (en) | 2023-12-27 |
US20240117164A1 (en) | 2024-04-11 |
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