WO2012077706A1 - 変性ポリプロピレン組成物およびそれを用いた積層体 - Google Patents
変性ポリプロピレン組成物およびそれを用いた積層体 Download PDFInfo
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- WO2012077706A1 WO2012077706A1 PCT/JP2011/078276 JP2011078276W WO2012077706A1 WO 2012077706 A1 WO2012077706 A1 WO 2012077706A1 JP 2011078276 W JP2011078276 W JP 2011078276W WO 2012077706 A1 WO2012077706 A1 WO 2012077706A1
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- modified polypropylene
- weight
- propylene
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- polypropylene composition
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- 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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
- B32B27/327—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polyolefins obtained by a metallocene or single-site catalyst
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- 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
- C08L23/10—Homopolymers or copolymers of propene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- 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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
- B32B2250/246—All polymers belonging to those covered by groups B32B27/32 and B32B27/30
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
- B32B2307/7244—Oxygen barrier
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/70—Food packaging
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31909—Next to second addition polymer from unsaturated monomers
- Y10T428/31913—Monoolefin polymer
- Y10T428/3192—Next to vinyl or vinylidene chloride polymer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31938—Polymer of monoethylenically unsaturated hydrocarbon
Definitions
- the present invention relates to a modified polypropylene composition and a laminate (laminated structure) using the composition. More specifically, a modified polypropylene composition for forming a laminate that is excellent in film moldability and can prevent a decrease in interlayer adhesion even when the laminate is molded or stretch-molded at high speed, and The present invention relates to a laminate having excellent interlayer adhesion using the composition.
- Polypropylene resin is excellent in mechanical strength, rigidity, heat resistance, chemical resistance, oil resistance, transparency, low temperature impact resistance, etc., and using these properties, packaging of films, sheets, bottles, etc. It is widely used as a decorative material such as a material / coating material or wallpaper.
- a polypropylene resin cannot be used for packaging materials that require high gas barrier properties such as foods, medicines, and cosmetics because of the high permeability of gases such as oxygen.
- a modified polypropylene composition for forming a laminate capable of preventing a decrease in the interlayer adhesive force, and the composition are used.
- the appearance of a laminate having excellent interlayer adhesion is desired.
- An object of the present invention is to provide a modified polypropylene composition for forming a laminate that can prevent a decrease in interlayer adhesion even when it is molded at high speed or stretch-molded in a modified polypropylene composition and a laminate using the same. It is an object of the present invention to provide a composition and a laminate having excellent interlayer adhesion using the composition.
- the propylene polymer (A-1) is 60 to 85% by weight
- the melt flow rate (MFR; ASTM D1238, 230 ° C., 2.16 kg load) is 0.01 to 40 g / 10 minutes
- the density (ASTM D1505) is a modified polypropylene (C) partially or entirely graft-modified with an ethylene / ⁇ -olefin copolymer (B) of 0.900 g / cm 3 or less and an unsaturated carboxylic acid or derivative thereof (C).
- the propylene polymer (A-1) is [1] MFR (230 ° C., 2.16 kg load) is 1 to 50 (g / 10 min), [2] The elution peak temperature by TREF is 75 ° C. or lower, and the integrated elution value is less than 0.1% by weight at 20 ° C. [3] The melting point determined by DSC is 135 ° C. or lower, A modified polypropylene composition characterized in that: And preferably any of the following.
- ⁇ 2> 25-85% by weight of propylene polymer (A-1), 0-45% by weight of propylene polymer (A-2), melt flow rate (MFR: ASTM D1238, 230 ° C., 2.16 kg load) ) Is 0.01 to 40 g / 10 min, and the density (ASTM D1505) is 0.900 g / cm 3 or less, 10 to 30% by weight of an ethylene / ⁇ -olefin copolymer (B), an unsaturated carboxylic acid or Modified polypropylene composition comprising 0.01 to 10% by weight of a modified polypropylene (C) partially or entirely graft-modified with its derivative [(A-1) + (A-2) + (B) + (C) 100% by weight.
- the propylene polymer (A-1) is [1] MFR (230 ° C., 2.16 kg load) is 1 to 50 (g / 10 min), [2] The elution peak temperature by TREF is 75 ° C. or lower, and the integrated elution value is less than 0.1% by weight at 20 ° C. [3] The melting point determined by DSC is 135 ° C. or lower, A modified polypropylene composition, wherein the propylene resin (A-2) has an elution peak temperature by TREF of more than 75 ° C.
- the propylene polymer (A-1) is obtained by homopolymerization of propylene or copolymerization of propylene and an ⁇ -olefin having 2 to 20 carbon atoms excluding propylene in the presence of a metallocene catalyst (copolymerization).
- a laminate comprising a two-layer or three-layer structure composed of a composition layer made of the modified polypropylene composition and a resin layer provided on one or both surfaces of the composition layer.
- the resin layer includes a layer made of a polymer containing a monomer having at least a polar group.
- the propylene polymer (A′-1) is [1] MFR (230 ° C., 2.16 kg load) is 1 to 50 (g / 10 min), [2 ′]
- the elution peak temperature by TREF is 75 ° C.
- a modified polypropylene composition characterized in that: And preferably ⁇ 8> A layer (Z) made of an ethylene-vinyl alcohol copolymer, a layer (Y) made of any of the above-mentioned modified polypropylene compositions, and a layer (X) made of unmodified polypropylene are laminated in this order. Laminated body. It is.
- the propylene-based polymer (A-1) of the present invention has a melt flow rate (MFR; ASTM D1238, 230 ° C., 2.16 kg load) of 0.01 to 10 g / 10 min, and a density (ASTM D1505) of 0.
- MFR melt flow rate
- ASTM D1238, 230 ° C., 2.16 kg load 0.01 to 10 g / 10 min
- ASTM D1505 density
- a modified polypropylene comprising an ethylene / ⁇ -olefin copolymer (B) of 900 g / cm 3 or less and a modified polypropylene (C) partially or entirely graft-modified with an unsaturated carboxylic acid or a derivative thereof.
- the composition can improve the interlayer adhesion in the laminate and enable high speed molding and stretch molding.
- the propylene-based polymer (A′-1) of the present invention has a melt flow rate (MFR; ASTM D1238, 230 ° C., 2.16 kg load) of 0.01 to 10 g / 10 min, and a density (ASTM D1505).
- MFR melt flow rate
- ASTM D1238, 230 ° C., 2.16 kg load 0.01 to 10 g / 10 min
- ASTM D1505 density
- B ethylene / ⁇ -olefin copolymer
- C modified polypropylene
- the resulting modified polypropylene composition can improve the interlayer adhesion in the laminate, and enable high speed molding and stretch molding.
- a laminate excellent in gas barrier properties can be obtained, such as food, medicine, cosmetics, etc. Can be suitably used.
- Propylene polymer (A-1), (A'-1) The propylene polymer (A-1), which is one of the components constituting the modified polypropylene composition of the present invention, has [1] MFR satisfying 1 to 50 g / 10 min, and [2] the elution peak temperature by TREF. It has a feature that it is 75 ° C. or lower, an integrated dissolution value is 0.1 wt% or lower at 20 ° C., and [3] the melting point determined by DSC is 135 ° C. or lower.
- the propylene polymer (A′-1) which is one of the components constituting the modified polypropylene composition of the present invention, has [1] MFR of 1 to 50 g / 10 minutes, and [2 ′] TREF The elution peak temperature is 75 ° C. or lower, and [3] the melting point determined by DSC is 135 ° C. or lower.
- the MFR of the propylene-based polymers (A-1) and (A′-1) according to the present invention is in the range of 1 to 50 g / 10 minutes, preferably 1 to 10 g / 10 minutes, and more preferably 2 to 6 g. / 10 minutes. If the MFR is less than 1 g / 10 minutes, the extrusion characteristics are poor and it is difficult to mold, and if it exceeds 50 g / 10 minutes, the melt tension becomes too small and film formation becomes difficult, which is not preferable.
- the propylene polymers (A-1) and (A′-1) according to the present invention are preferably 25 to 85% by weight, more preferably 30 to 80% by weight with respect to 100% by weight of the modified polypropylene composition. %, More preferably 35 to 70% by weight.
- the content of the propylene polymer (A-1) is in the above range, the interlayer adhesion at the time of high speed molding and stretch molding is particularly high when a laminate or the like is molded using the modified polypropylene composition. Since it is excellent, it is preferable.
- the propylene polymer (A-1) according to the present invention has an elution peak temperature of [2] TREF of 75 ° C. or lower and an integrated elution value of less than 0.1% by weight at 20 ° C.
- a propylene-based polymer having an elution peak temperature by TREF exceeding 75 ° C. and an elution integrated value of 20 ° C. and 0.1% by weight or more is used, the interlayer adhesion at the time of high-speed molding and stretch molding decreases. There is a fear.
- the propylene polymer (A′-1) according to the present invention has an elution peak temperature by [2 ′] TREF of 75 ° C. or lower.
- the use of a propylene polymer having an elution peak temperature by TREF of 75 ° C. or lower is preferable because the interlayer adhesion at the time of high speed molding and stretch molding is particularly excellent.
- the propylene polymers (A-1) and (A′-1) according to the present invention have a melting point (Tm) determined by DSC of 135 ° C. or lower, preferably 120 ° C. or lower.
- Tm melting point
- the propylene polymer (A-1) having the above characteristic [2] according to the present invention and the propylene polymer (A′-1) having the above characteristic [2 ′] according to the present invention are preferably metallocene. It is obtained by homopolymerizing propylene in the presence of a catalyst or copolymerizing propylene and an ⁇ -olefin having 2 to 20 carbon atoms excluding propylene.
- the metallocene catalyst used in the present invention includes at least one compound selected from metallocene compounds and compounds capable of reacting with organometallic compounds, organoaluminum oxy compounds and metallocene compounds to form ion pairs.
- a metallocene catalyst which can be subjected to stereoregular polymerization such as an isotactic or syndiotactic structure, if necessary, is preferably a metallocene catalyst comprising a particulate carrier.
- crosslinkable metallocene compounds described in published patent publication WO 01/27124 are preferably used.
- R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 are It is selected from hydrogen, a hydrocarbon group, and a silicon-containing group, and each may be the same or different.
- Such hydrocarbon groups include methyl, ethyl, n-propyl, allyl, n-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, n- Linear hydrocarbon groups such as nonyl group and n-decanyl group; isopropyl group, tert-butyl group, amyl group, 3-methylpentyl group, 1,1-diethylpropyl group, 1,1-dimethylbutyl group, 1 -Branched hydrocarbon groups such as methyl-1-propylbutyl group, 1,1-propylbutyl group, 1,1-dimethyl-2-methylpropyl group, 1-methyl-1-isopropyl-2-methylpropyl group; Cyclic saturated hydrocarbon groups such as cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, norbornyl
- Examples of the silicon-containing group include a trimethylsilyl group, a triethylsilyl group, a dimethylphenylsilyl group, a diphenylmethylsilyl group, and a triphenylsilyl group.
- the adjacent substituents of R 5 to R 12 may be bonded to each other to form a ring.
- Examples of such substituted fluorenyl groups include benzofluorenyl group, dibenzofluorenyl group, octahydrodibenzofluorenyl group, octamethyloctahydrodibenzofluorenyl group, octamethyltetrahydrodicyclopentafluorenyl group, etc. Can be mentioned.
- R 1 , R 2 , R 3 and R 4 substituted on the cyclopentadienyl ring are preferably hydrogen or a hydrocarbon group having 1 to 20 carbon atoms.
- the hydrocarbon group having 1 to 20 carbon atoms include the aforementioned hydrocarbon groups. More preferably, R 3 is a hydrocarbon group having 1 to 20 carbon atoms.
- R 5 to R 12 substituted on the fluorene ring are preferably hydrocarbon groups having 1 to 20 carbon atoms.
- Examples of the hydrocarbon group having 1 to 20 carbon atoms include the aforementioned hydrocarbon groups.
- the adjacent substituents of R 5 to R 12 may be bonded to each other to form a ring.
- Y that bridges the cyclopentadienyl ring and the fluorenyl ring is preferably a group 14 element, more preferably carbon, silicon, or germanium, and further preferably a carbon atom.
- R 13 and R 14 substituted for Y are preferably hydrocarbon groups having 1 to 20 carbon atoms. These may be the same as or different from each other, and may be bonded to each other to form a ring. Examples of the hydrocarbon group having 1 to 20 carbon atoms include the aforementioned hydrocarbon groups. More preferably, R 14 is an aryl group having 6 to 20 carbon atoms.
- aryl group examples include the above-mentioned cyclic unsaturated hydrocarbon group, a saturated hydrocarbon group substituted with a cyclic unsaturated hydrocarbon group, and a heteroatom-containing cyclic unsaturated hydrocarbon group.
- R 13 and R 14 may be the same or different from each other, and may be bonded to each other to form a ring.
- a fluorenylidene group, a 10-hydroanthracenylidene group, a dibenzocycloheptadienylidene group, and the like are preferable.
- M is preferably a Group 4 transition metal, more preferably Ti, Zr, Hf and the like.
- Q is selected from the same or different combinations from halogen, a hydrocarbon group, an anionic ligand, or a neutral ligand capable of coordinating with a lone pair of electrons.
- j is an integer of 1 to 4, and when j is 2 or more, Qs may be the same or different from each other.
- Specific examples of the halogen include fluorine, chlorine, bromine and iodine
- specific examples of the hydrocarbon group include those described above.
- anionic ligand examples include alkoxy groups such as methoxy, tert-butoxy and phenoxy, carboxylate groups such as acetate and benzoate, and sulfonate groups such as mesylate and tosylate.
- neutral ligands that can be coordinated by a lone pair include organophosphorus compounds such as trimethylphosphine, triethylphosphine, triphenylphosphine, diphenylmethylphosphine, tetrahydrofuran, diethyl ether, dioxane, 1,2-dimethoxy And ethers such as ethane.
- At least one Q is preferably a halogen or an alkyl group.
- Such bridged metallocene compounds include isopropylidene (3-tert-butyl-5-methyl-cyclopentadienyl) (fluorenyl) zirconium dichloride, isopropylidene (3-tert-butyl-5-methyl-cyclopentadienyl).
- ions react with the organometallic compound, organoaluminum oxy compound, and transition metal compound (A) used together with the Group 4 transition metal compound represented by the general formula [I].
- the compounds disclosed in the above-mentioned publications (WO01 / 27124) and JP-A-11-315109 are used. Can be used without restriction.
- Preferred specific examples of the ⁇ -olefin used together with propylene in the copolymerization according to the present invention include ethylene, 1-butene, 1-pentene, 1-hexene, 4-methyl-1-pentene, 1-octene and the like. These can be used simultaneously, and a plurality of them can be used simultaneously. Among them, ethylene and 1-butene are preferably used.
- an antioxidant if necessary, within a range not impairing the performance as the propylene polymer (A-1) or (A′-1).
- Additives such as blocking agents and crystal nucleating agents may be included.
- the film formation described later as a pellet using a uniaxial or biaxial extruder can also be used in a film forming machine in a state where the above components are blended.
- Propylene polymer (A-2) The propylene polymer (A-2) which may be contained in the modified polypropylene composition of the present invention is a homopolymer of propylene or a copolymer of propylene and a small amount of ⁇ -olefin, usually as polypropylene. It is a polymer that is manufactured and sold. These propylene polymers (A-2) may be a single polymer or a mixture of several different propylene polymers.
- the propylene polymer (A-2) according to the present invention is any propylene polymer as long as it is different from the propylene polymers (A-1) and (A′-1).
- a propylene polymer having an elution peak temperature by TREF exceeding 75 ° C. is preferable.
- the method for producing the propylene polymer (A-2) according to the present invention is not particularly limited, and is produced by a known method using a known catalyst such as a Ziegler-Natta catalyst or a metallocene catalyst. be able to.
- a crystalline polymer can be preferably used, and in the case of a copolymer, it may be a random copolymer or a block copolymer.
- stereoregularity and the molecular weight as long as the moldability is satisfactory and it has a strength that can be used when formed into a molded body.
- Commercially available resins can be used as they are.
- the propylene homopolymer and the propylene / ⁇ -olefin random copolymer can be produced by a conventionally known method using a vanadium catalyst, a titanium catalyst or a metallocene catalyst.
- the propylene polymer (A-2) according to the present invention is preferably 0 to 45% by weight, more preferably 0 to 35% by weight, and still more preferably 0 to 45% by weight based on 100% by weight of the modified polypropylene composition. 20% by weight. If it exceeds 45% by weight, the interlaminar adhesive strength at the time of high speed molding and stretch molding is lowered, which is not preferable.
- Ethylene / ⁇ -olefin copolymer (B) which is one of the components constituting the modified polypropylene composition of the present invention has a melt flow rate (MFR; ASTM D 1238, 230 ° C., load 2.16 kg) of 0. 01 to 40 g / 10 min, preferably 0.01 to 20 g / 10 min, more preferably 0.1 to 10 g / 10 min, and the density (ASTM D 1505) is 0.900 g / cm 3. In the following, it is preferably in the range of 0.850 to 0.900 g / cm 3 , more preferably 0.860 to 0.890 g / cm 3 .
- the ethylene / ⁇ - olefin copolymer (B) having such physical properties is usually amorphous or has low crystallinity of less than 40% as measured by X-ray diffraction.
- the ethylene / ⁇ - olefin copolymer (B) according to the present invention is a random copolymer obtained by copolymerizing ethylene and an ⁇ -olefin, preferably an ⁇ -olefin having 3 to 20 carbon atoms.
- ⁇ - olefin having 3 to 20 carbon atoms to be copolymerized with ethylene examples include propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1 -Decene, 1-undecene, 1-dodecene, 1-tetradecene, 1-hexadecene, 1-octadecene, 1-nonadecene, 1-eicocene, 4-methyl-1-pentene and the like.
- ⁇ - olefins having 3 or 4 carbon atoms are preferred. These ⁇ -olefins may be used alone or in combination of two or more.
- the constitutional unit derived from ethylene is not particularly limited as long as the density is in the above range, but it is preferably 55 to 95% by weight, more preferably 60%.
- the structural unit derived from an ⁇ -sodium olefin having 3 to 20 carbon atoms in an amount of ⁇ 90 wt% is preferably contained in an amount of 5 to 45 wt%, more preferably 10 to 40 wt%.
- ethylene / ⁇ -olefin copolymer (B) examples include an ethylene / propylene random copolymer, an ethylene / 1-butene random copolymer, and an ethylene / propylene / 1-butene random copolymer.
- examples thereof include a polymer, an ethylene / 1-hexene random copolymer, an ethylene / 1-butene / 1-hexene random copolymer, and an ethylene / 1-octene random copolymer.
- an ethylene / propylene random copolymer is preferable. Two or more of these copolymers may be used in combination.
- the ethylene / ⁇ - olefin copolymer (B) as described above can be produced by a conventionally known method using a vanadium catalyst, a titanium catalyst or a metallocene catalyst.
- the ethylene / ⁇ - olefin copolymer (B) includes a propylene polymer (A-1), a propylene polymer (A-2), an ethylene / ⁇ - olefin copolymer (B), and a modified polypropylene.
- the total amount of (C) is preferably 10 to 30% by weight, more preferably 12 to 30% by weight, and still more preferably 15 to 30% by weight.
- Modified polypropylene (C) which is one of the components constituting the modified polypropylene composition of the present invention is a polypropylene graft-modified with an unsaturated carboxylic acid and / or a derivative thereof.
- the polypropylene used for the graft modification is a propylene homopolymer and / or a propylene / ⁇ -olefin copolymer.
- the ⁇ -olefin of the propylene / ⁇ -olefin copolymer include ethylene and / or ⁇ -olefin having 4 to 20 carbon atoms, and these ⁇ -olefins may be used alone or in combination of two or more. Good.
- Preferred ⁇ -olefins in the present invention are ⁇ -olefins having 4 to 10 carbon atoms, among which ⁇ -olefins having 4 to 8 carbon atoms can be preferably used.
- the method for producing polypropylene used for graft modification of the modified polypropylene according to the present invention is not particularly limited, and is produced by a known method using a known catalyst such as a Ziegler-Natta catalyst or a metallocene catalyst. be able to.
- a crystalline polymer can be preferably used, and in the case of a copolymer, it may be a random copolymer or a block copolymer.
- stereoregularity and the molecular weight as long as the moldability is satisfactory and it has a strength that can be used when formed into a molded body.
- Commercially available polypropylene can be used as it is.
- the melt flow rate (MFR: ASTM D1238, 230 ° C., 2.16 kg load) of the modified polypropylene (C) according to the present invention is usually 0.01 to 400 g / 10 minutes, preferably 0.1 to 90 g / 10 minutes. Since the modified polypropylene (C) having a melt flow rate in this range is excellent in fluidity, it is possible to obtain a modified polypropylene composition that can be molded into a large product and can be molded at a high speed.
- Examples of the unsaturated carboxylic acid and / or derivative thereof used as a graft monomer include an unsaturated compound having one or more carboxylic acid groups, an ester of a compound having a carboxylic acid group and an alkyl alcohol, or 1 carboxylic anhydride group.
- Examples of the unsaturated group include the vinyl group, vinylene group, unsaturated cyclic hydrocarbon group, and the like.
- Specific compounds include, for example, acrylic acid, maleic acid, fumaric acid, tetrahydrophthalic acid, itaconic acid, citraconic acid, crotonic acid, isocrotonic acid, nadic acid [trademark] (endocis-bicyclo [2.2.1] Unsaturated carboxylic acids such as hept-5-ene-2,3-dicarboxylic acid); or derivatives thereof such as acid halides, amides, imides, anhydrides, esters and the like. Specific examples of such derivatives include, for example, maleyl chloride, maleimide, maleic anhydride, citraconic anhydride, monomethyl maleate, dimethyl maleate, glycidyl maleate and the like.
- unsaturated carboxylic acids and / or derivatives thereof can be used singly or in combination of two or more.
- unsaturated dicarboxylic acids or acid anhydrides thereof are suitable, and maleic acid, nadic acid or acid anhydrides thereof are particularly preferably used.
- Control of the content of the unsaturated carboxylic acid and / or derivative thereof can be easily performed by, for example, appropriately selecting the grafting conditions.
- a method of grafting a graft monomer selected from unsaturated carboxylic acid and / or a derivative thereof onto polypropylene is not particularly limited, and conventionally known graft polymerization methods such as a solution method and a melt-kneading method can be employed. For example, there are a method of melting polypropylene and adding a graft monomer thereto to cause a graft reaction, or a method of dissolving polypropylene in a solvent to form a solution, and adding a graft monomer thereto to cause a graft reaction.
- the radical initiator is usually used in an amount of 0.001 to 1 part by weight with respect to 100 parts by weight of the polypropylene.
- Organic radicals, azo compounds, etc. are used as such radical initiators. Specifically, benzoyl peroxide, dichlorobenzoyl peroxide, dicumyl peroxide, di-t- butyl peroxide, 2,5-dimethyl-2,5- di (peroxide benzoate) hexyne-3, 1,4-bis (t -Butylperoxyisopropyl) benzene, lauroyl peroxide, t-butylperacetate, 2,5-dimethyl-2,5- di- (t-butylperoxide) hexyne-3, 2,5-dimethyl-2,5- di ( t-butyl peroxide) hexane, t-butyl perbenzoate, t-butyl perphenyl acetate, t-butyl perisobutyrate, t-butyl per-sec-sec octoate, t-butyl perpivalate, cum
- dicumyl peroxide, di-t- butyl peroxide, 2,5-dimethyl-2,5- di (t-butylperoxy) hexyne-3, 2,5-dimethyl-2,5- di (t Dialkyl peroxides such as -butylperoxy) hexane and 1,4-bis (t-butylperoxyisopropyl) benzene are preferably used.
- the reaction temperature of the graft polymerization reaction using a radical initiator or the graft polymerization reaction performed without using a radical initiator is usually set in the range of 60 to 350 ° C, preferably 150 to 300 ° C.
- the content of the unsaturated carboxylic acid or derivative thereof in the modified polypropylene (C) according to the present invention is usually 0.1 to 10% by weight, preferably 1 to 10% by weight, based on 100% by weight of the modified polypropylene (C). More preferably, it is 2 to 9% by weight.
- the propylene polymer (A-2) is an optional component, and when the propylene polymer (A-2) is 0% by weight, the modified polypropylene composition of the present invention contains propylene
- the polymer (A-1) 60 to 85% by weight, the melt flow rate (MFR; ASTM D1238, 230 ° C., 2.16 kg load) is 0.01 to 40 g / 10 min, and the density (ASTM D1505) is 0.
- the modified polypropylene composition of the present invention has a propylene polymer (A′-1) of 60 to 85% by weight and a melt flow rate (MFR: ASTM D1238, 230 ° C., 2.16 kg load) of 0.01 to 40 g. / 10 minutes, and the density (ASTM D1505) is 0.900 g / cm 3 or less of ethylene / ⁇ -olefin copolymer (B) of 10 to 30% by weight, and part or all of unsaturated carboxylic acid or derivative thereof
- the propylene polymer (A′-1) is 25 to 85% by weight
- the propylene polymer (A-2) is 0 to 45% by weight
- the melt flow rate (MFR; ASTM D1238, 230 ° C.). , 2.16 kg load) is 0.01 to 40 g / 10 min
- the density (ASTM D1505) is 0.900 g / cm 3 or less, 10-30 wt% of ethylene / ⁇ -olefin copolymer (B)
- the modified polypropylene composition of the present invention has a melt flow rate (MFR; ASTM D 1238, 230 ° C., 2.16 kg load) usually 0.1 to 50 g / 10 minutes, preferably 0.5 to 40 g / 10 minutes. More preferably, it is within the range of 1.0 to 25 g / 10 min.
- the density (ASTM D 1505) is usually, 880 ⁇ 910kg / m 3, preferably 882 ⁇ 908kg / m 3, still more preferably in the range of 885 ⁇ 905kg / m 3.
- the modified polypropylene composition of the present invention comprises the propylene polymer (A-1), the ethylene / ⁇ -olefin copolymer (B), the modified polypropylene (C) and, if necessary, the propylene polymer (A-2). ), And then melt-kneading.
- the modified polypropylene composition of the present invention comprises the propylene polymer (A′-1), the ethylene / ⁇ -olefin copolymer (B), the modified polypropylene (C) and, if necessary, a propylene polymer ( It can be obtained by mixing each component of A-2) and then melt-kneading.
- Melting and kneading is performed using a kneading apparatus such as a mixing roll, a Banbury mixer, a kneader, a uniaxial or biaxial extruder, and is preferably performed in a non-open kneading apparatus.
- the melt kneading is preferably performed in an inert gas atmosphere such as nitrogen.
- the kneading temperature is usually 200 to 310 ° C., preferably 280 to 300 ° C., and the kneading time is 1 to 10 minutes, preferably 1 to 2 minutes.
- the propylene polymer (A-1), the ethylene / ⁇ -olefin copolymer (B) and the modified polypropylene (C), or the propylene polymer (A′-1), ethylene / ⁇ -For the olefin copolymer (B) and modified polypropylene (C), etc. if necessary, a phenol-based antioxidant, a phosphorus-based antioxidant, a sulfur-based antioxidant, which are usually used in a modified propylene homopolymer, and Additives such as metal compounds and metal salts of higher fatty acids can be added as long as the object of the present invention is not impaired.
- the modified polypropylene composition of the present invention comprises the propylene polymer (A-1), the ethylene / ⁇ -olefin copolymer (B), and, if necessary, the propylene polymer (A-2).
- the modified polypropylene composition of the present invention can be blended with other resins, elastomers, tackifiers, fillers, and the like that can be mixed within a range that does not impair the object of the present invention.
- the other resins and the like are blended when the above-mentioned (A-1), (B), (C) and, if necessary, (A-2) are melt-kneaded, or (A′-1), When (B), (C) and, if necessary, (A-2) are melt-kneaded, they may be blended at the same time, or once a modified polypropylene composition is obtained, they may be blended.
- Laminate The modified polypropylene composition of the present invention can be used alone, but can also be suitably used as an adhesive layer of a laminate in the configuration of a laminate laminated on a substrate.
- the substrate constituting the laminate of the present invention is not particularly limited, but is a polymer containing a polyolefin resin film such as polyethylene or polypropylene, a styrene resin film, or a monomer having at least a polar group.
- Polyester films such as polyethylene terephthalate and polybutylene terephthalate, polyamide films such as nylon 6 and nylon 6,6, ethylene-vinyl alcohol copolymer films or stretched films thereof, modified propylene polymer films and polyamide films, and ethylene-vinyl
- a film made of a resin layer such as a laminate (film) with a gas barrier film such as an alcohol copolymer film, or a vapor deposited film obtained by depositing aluminum or silica on a film made of a resin layer.
- metal foil, such as aluminum, paper, etc. are suitably selected and used according to the intended purpose of the packaging material.
- This base material can be used not only in one type but also in combination of two or more types.
- polyamide constituting the laminate of the present invention examples include nylon 6, nylon 66, MXD nylon (metaxylylenediamine copolymer nylon) and the like.
- the ethylene / vinyl alcohol copolymer constituting the laminate of the present invention is desirably a copolymer containing 20 to 50 mol%, preferably 25 to 48 mol% of a polymer unit derived from ethylene. These can be produced by saponifying a corresponding ethylene / vinyl acetate copolymer by a conventional method.
- the laminate of the present invention includes a layer made of a polymer containing a monomer having a polar group as a structural unit, a layer made of the modified polypropylene composition of the present invention, and a polymer containing a monomer having no polar group as a structural unit.
- the layers are laminated in this order, and the layer made of ethylene-vinyl alcohol copolymer or polyamide, the layer made of the modified polypropylene composition of the present invention, and the layer made of polyolefin are More preferably, the layers are laminated in order, and a layer made of an ethylene-vinyl alcohol copolymer, a layer made of the modified polypropylene composition of the present invention, and a layer made of unmodified polypropylene are laminated in this order.
- a laminated body is particularly preferable.
- the laminate of the present invention is mainly composed of a layer made of a polymer containing a monomer having a polar group as a constituent unit, a layer made of the modified polypropylene composition of the present invention, and a monomer having no polar group as a constituent unit.
- the layer made of the polymer to be included may be a laminate having a three-kind five-layer structure laminated in this order.
- the laminate of the present invention can be produced by various known methods. For example, it can be produced by a known coextrusion method such as inflation molding, cast molding, tube molding, extrusion coating molding, etc. Also, after forming a single-layer or multi-layer film, etc., dry laminating by heating, etc. It can be illustrated. In the present invention, it is preferable to use coextrusion molding.
- MAO methylaminoxan
- the obtained prepolymerized catalyst was resuspended in purified heptane and adjusted with n-heptane so that the solid catalyst component concentration was 2 g / L. A part was sampled and the prepolymer was analyzed. This prepolymer contained 10 g of polyethylene per 1 g of the solid catalyst component.
- the obtained slurry was sent to a vessel polymerization vessel equipped with a stirrer having an internal volume of 500 L and further polymerized.
- propylene was supplied at 11 kg / hr
- ethylene was supplied at 1.5 kg / hr
- hydrogen was supplied so that the hydrogen concentration in the gas phase was 0.15 mol%.
- Polymerization was performed at a polymerization temperature of 59 ° C. and a pressure of 2.4 MPa ⁇ G.
- the resulting propylene / ethylene random copolymer was pelletized in accordance with the following molding / processing method [a1] pelletizing method to obtain a propylene polymer (A-1-1).
- Table 1 shows the primary physical property values of the obtained polymer propylene polymer (A-1-1).
- Propylene polymer (A-1-2) The procedure was the same as that for the propylene polymer (A-1-1) except that the prepolymerization was changed as follows.
- the temperature of the tubular reactor was 30 ° C., and the pressure was 2.6 MPa ⁇ G.
- the resulting propylene polymer (A-1-2) is pelletized in accordance with the following molding and processing method [a1] pelletizing method, and the propylene polymer (A-1-2) Got.
- Table 1 shows the primary physical property values of the resulting propylene polymer (A-1-2).
- the reaction was further continued at 160 ° C. for 30 minutes, and then cooled to room temperature to precipitate the polymer.
- the precipitated polymer was filtered, further washed repeatedly with acetone, and dried under reduced pressure at 80 ° C. overnight to obtain the desired modified propylene homopolymer (C-1).
- Elemental analysis was performed on this modified propylene homopolymer and the amount of maleic anhydride grafted was measured. As a result, it was found that maleic anhydride equivalent to 2.0 g per 100 g of the modified propylene homopolymer was graft polymerized.
- Ethylene concentration in propylene random copolymer Px (mol%) In order to measure the ethylene concentration Px (mol%) in the propylene random copolymer, 20-30mg of sample was dissolved in 0.6ml of 1,2,4-trichlorobenzene / heavy benzene (2: 1) solution, then carbon. Nuclear magnetic resonance analysis (13C-NMR) was performed. Propylene, ethylene, and ⁇ -olefin were quantitatively determined from the dyad chain distribution.
- the endothermic peak in the third step was defined as the melting point (Tm).
- Tm melting point
- First step The temperature is raised to 240 ° C. at 10 ° C./min and held for 10 minutes.
- Second step Decrease the temperature to 60 ° C at 10 ° C / min.
- 3rd step The temperature is raised to 240 ° C at 10 ° C / min.
- Mw / Mn weight average molecular weight (Mw), number average molecular weight (Mn)] Measurement was performed as follows using GPC150C Plus manufactured by Waters.
- the separation columns are TSKgel GMH6-HT and TSKgel GMH6-HTL, the column size is 7.5 mm in inner diameter and 600 mm in length, the column temperature is 140 ° C., the mobile phase is o-dichlorobenzene (Wako Pure Chemical Industries, Ltd.) ) And 0.025 wt% BHT (Wako Pure Chemical Industries) as the antioxidant, moved at 1.0 ml / min, the sample concentration was 0.1 wt%, the sample injection volume was 500 microliters, and a differential refractometer as the detector Was used.
- the standard polystyrene used was manufactured by Tosoh Corporation for molecular weights of Mw ⁇ 1000 and Mw> 4 ⁇ 10 6 , and used by Pressure Chemical Co. for 1000 ⁇ Mw ⁇ 4 ⁇ 10 6 .
- CFC measurement Cross chromatographic fractionation measurement (CFC measurement) CFC was measured under the following conditions using the following apparatus equipped with a temperature rising elution fractionation (TREF) part for performing compositional fractionation and a GPC part for performing molecular weight fractionation, and the amount of eluted components at 40 ° C. or less was calculated.
- TEZ temperature rising elution fractionation
- Measuring device CFC T-150A, manufactured by Mitsubishi Yuka Co., Ltd., trademark column: Shodex AT-806MS (three) Dissolved solution: o-dichlorobenzene flow rate: 1.0 ml / min Sample concentration: 0.3 wt / vol% (with 0.1% BHT) Injection volume: 0.5 ml Solubility: Complete dissolution detector: Infrared absorption detection method, 3.42 ⁇ (2924cm -1 ), NaCl plate elution temperature: 0 to 135 ° C, 28 fractions [0, 10, 20, 30, 40, 45, 50, 55 , 60, 65, 70, 75, 80, 85, 90, 94, 97, 100, 103, 106, 109, 112, 115, 118, 121, 124, 127, 135 ° C] [m5] Melt flow rate (MFR) Measurement was performed at 230 ° C.
- Propylene-based random copolymer particle pelletization method 100 parts by weight of propylene-based random copolymer, tetrakis [methylene-3 (3,5-di-t-butyl-4-hydroxyphenyl) as an antioxidant Propionate] 0.1 parts by weight of methane, 0.1 parts by weight of 2,4-bis (1,1-dimethyl) -phosphate phenol, 0.1 parts by weight of calcium stearate as a neutralizer, 0.15 parts by weight of synthetic silica, erucamide Was blended and melt-kneaded at a resin temperature of 250 ° C. using a KTX-30 twin screw extruder to pelletize a propylene random copolymer.
- the propylene polymer (A-2-1) 160 ⁇ m) / Co-extrusion molding at a molding speed of 5 m / min so as to form a three-layer structure laminated in the order of / modified polypropylene composition (S-1) (40 ⁇ m) / EVOH (40 ⁇ m).
- S-1) 40 ⁇ m
- EVOH 40 ⁇ m
- a polymer layer, a (Y) layer is a modified polypropylene composition layer, and a (Z) layer is an EVOH layer.
- a laminated structure (a laminated body made of a laminated film) was produced.
- a laminated structure composed of three layers having the same structure as described above was manufactured at various molding speeds.
- the above three-layer laminated structure molded at a speed of 5 m / min using a batch-type biaxial stretching machine is simultaneously tripled vertically and horizontally at a preheating temperature of 60 ° C., a preheating time of 30 seconds, and a stretching speed of 1.5 m / s. Biaxial stretching was performed to obtain a stretched laminated structure (F-1).
- each of the extruders is provided with a propylene polymer (A-2-1), Supply the modified polypropylene composition (S-2) obtained in (1) above and the above EVOH, and set the maximum temperature during extrusion to 240 ° C. 350 mm) to 5 m so as to form a three-layer structure in which propylene polymer (A-2-1) (160 ⁇ m) / modified polypropylene composition (S-2) (40 ⁇ m) / EVOH (40 ⁇ m) are laminated in this order.
- (X) layer is a propylene polymer layer
- (Y) layer is a modified polypropylene composition layer
- (Z) layer is a three-layer structure consisting of an EVOH layer A body (laminated film) was produced.
- a laminated structure composed of three layers having the same structure as described above was manufactured at various molding speeds.
- the above three-layer laminated structure molded at a speed of 5 m / min using a batch-type biaxial stretching machine is simultaneously tripled vertically and horizontally at a preheating temperature of 60 ° C., a preheating time of 30 seconds, and a stretching speed of 1.5 m / s. Biaxial stretching was performed to obtain a stretched laminated structure (F-2).
- (X) layer is a propylene polymer layer
- (Y) layer is a modified polypropylene composition layer
- (Z) layer is a three-layer structure consisting of an EVOH layer A body (laminated film) was produced.
- a laminated structure composed of three layers having the same structure as described above was manufactured at various molding speeds.
- the above three-layer laminated structure molded at a speed of 5 m / min using a batch-type biaxial stretching machine is simultaneously tripled vertically and horizontally at a preheating temperature of 60 ° C., a preheating time of 30 seconds, and a stretching speed of 1.5 m / s. Biaxial stretching was performed to obtain a stretched laminated structure (F-3).
- each of the extruders is provided with a propylene polymer (A-2-1), Supply the modified polypropylene composition (S-4) obtained in (1) above and EVOH above, and set the maximum temperature during extrusion to 240 ° C. 350 mm) to 5 m so as to form a three-layer structure in which propylene polymer (A-2-1) (160 ⁇ m) / modified polypropylene composition (S-4) (40 ⁇ m) / EVOH (40 ⁇ m) are laminated in this order.
- (X) layer is a propylene polymer layer
- (Y) layer is a modified polypropylene composition layer
- (Z) layer is a three-layer structure consisting of an EVOH layer A body (laminated film) was produced.
- a laminated structure composed of three layers having the same structure as described above was manufactured at various molding speeds.
- the above three-layer laminated structure molded at a speed of 5 m / min using a batch-type biaxial stretching machine is simultaneously tripled vertically and horizontally at a preheating temperature of 60 ° C., a preheating time of 30 seconds, and a stretching speed of 1.5 m / s. Biaxial stretching was performed to obtain a stretched laminated structure (F-4).
- (X) layer is a propylene polymer layer
- (Y) layer is a modified polypropylene composition layer
- (Z) layer is a three-layer structure consisting of an EVOH layer A body (laminated film) was produced.
- a laminated structure composed of three layers having the same structure as described above was manufactured at various molding speeds.
- the above three-layer laminated structure molded at a speed of 5 m / min using a batch-type biaxial stretching machine is simultaneously tripled vertically and horizontally at a preheating temperature of 60 ° C., a preheating time of 30 seconds, and a stretching speed of 1.5 m / s. Biaxial stretching was performed to obtain a stretched laminated structure (F-5).
- (X) layer is a propylene polymer layer
- (Y) layer is a modified polypropylene composition layer
- (Z) layer is a three-layer structure consisting of an EVOH layer A body (laminated film) was produced.
- a laminated structure composed of three layers having the same structure as described above was manufactured at various molding speeds.
- the above three-layer laminated structure molded at a speed of 5 m / min using a batch-type biaxial stretching machine is simultaneously tripled vertically and horizontally at a preheating temperature of 60 ° C., a preheating time of 30 seconds, and a stretching speed of 1.5 m / s. Biaxial stretching was performed to obtain a stretched laminated structure (F-6).
- (X) layer is a propylene polymer layer
- (Y) layer is a modified polypropylene composition layer
- (Z) layer is a three-layer structure consisting of an EVOH layer A body (laminated film) was produced.
- a laminated structure composed of three layers having the same structure as described above was manufactured at various molding speeds.
- the above three-layer laminated structure molded at a speed of 5 m / min using a batch-type biaxial stretching machine is simultaneously tripled vertically and horizontally at a preheating temperature of 60 ° C., a preheating time of 30 seconds, and a stretching speed of 1.5 m / s. Biaxial stretching was performed to obtain a stretched laminated structure (F-7).
- (X) layer is a propylene polymer layer
- (Y) layer is a modified polypropylene composition layer
- (Z) layer is a three-layer structure consisting of an EVOH layer A body (laminated film) was produced.
- a laminated structure composed of three layers having the same structure as described above was manufactured at various molding speeds.
- the above three-layer laminated structure molded at a speed of 5 m / min using a batch-type biaxial stretching machine is simultaneously tripled vertically and horizontally at a preheating temperature of 60 ° C., a preheating time of 30 seconds, and a stretching speed of 1.5 m / s. Biaxial stretching was performed to obtain a stretched laminated structure (F-8).
- (X) layer is a propylene polymer layer
- (Y) layer is a modified polypropylene composition layer
- (Z) layer is a three-layer structure consisting of an EVOH layer A body (laminated film) was produced.
- a laminated structure composed of three layers having the same structure as described above was manufactured at various molding speeds.
- the above three-layer laminated structure molded at a speed of 5 m / min using a batch-type biaxial stretching machine is simultaneously tripled vertically and horizontally at a preheating temperature of 60 ° C., a preheating time of 30 seconds, and a stretching speed of 1.5 m / s. Biaxial stretching was performed to obtain a stretched laminated structure (F-9).
- (X) layer is a propylene polymer layer
- (Y) layer is a modified polypropylene composition layer
- (Z) layer is a three-layer structure consisting of an EVOH layer A body (laminated film) was produced.
- a laminated structure composed of three layers having the same structure as described above was manufactured at various molding speeds.
- the above three-layer laminated structure molded at a speed of 5 m / min using a batch-type biaxial stretching machine is simultaneously tripled vertically and horizontally at a preheating temperature of 60 ° C., a preheating time of 30 seconds, and a stretching speed of 1.5 m / s. Biaxial stretching was performed to obtain a stretched laminated structure (F-10).
- (X) layer is a propylene polymer layer
- (Y) layer is a modified polypropylene composition layer
- (Z) layer is a three-layer structure consisting of an EVOH layer A body (laminated film) was produced.
- a laminated structure composed of three layers having the same structure as described above was manufactured at various molding speeds.
- the above three-layer laminated structure molded at a speed of 5 m / min using a batch-type biaxial stretching machine is simultaneously tripled vertically and horizontally at a preheating temperature of 60 ° C., a preheating time of 30 seconds, and a stretching speed of 1.5 m / s. Biaxial stretching was performed to obtain a stretched laminated structure (F-11).
- (X) layer is a propylene polymer layer
- (Y) layer is a modified polypropylene composition layer
- (Z) layer is a three-layer structure consisting of an EVOH layer A body (laminated film) was produced.
- a laminated structure composed of three layers having the same structure as described above was manufactured at various molding speeds.
- the above three-layer laminated structure molded at a speed of 5 m / min using a batch-type biaxial stretching machine is simultaneously tripled vertically and horizontally at a preheating temperature of 60 ° C., a preheating time of 30 seconds, and a stretching speed of 1.5 m / s. Biaxial stretching was performed to obtain a stretched laminated structure (F-12).
- (X) / (Y) / (Z) 160/40/40 ( ⁇ m) @ 5m / min (Adhesive strength measurement before and after stretching)
Abstract
Description
〈1〉プロピレン系重合体(A-1)60~85重量%とメルトフローレート(MFR;ASTM D1238,230℃、2.16kg荷重)が0.01~40g/10分であり、密度(ASTM D1505)が0.900g/cm3 以下のエチレン・α-オレフィン共重合体(B)10~30重量%と、不飽和カルボン酸もしくはその誘導体で一部または全部がグラフト変性された変性ポリプロピレン(C)0.01~10重量%を含有してなる変性ポリプロピレン組成物〔(A-1)+(B)+(C)=100重量%とする。〕であって、
当該プロピレン系重合体(A-1)が、
[1]MFR(230℃、2.16kg荷重) が1~50(g/10分)、
[2]TREFによる溶出ピーク温度が75℃以下であり、且つ、溶出積算値が20℃で0.1重量%未満、
[3]DSCで求めた融点が135℃以下、
であることを特徴とする変性ポリプロピレン組成物。
であり、好ましくは以下のいずれかである。
〈2〉プロピレン系重合体(A-1)25~85重量%とプロピレン系重合体(A-2)0~45重量%と、メルトフローレート(MFR;ASTM D1238,230℃、2.16kg荷重)が0.01~40g/10分であり、密度(ASTM D1505)が0.900g/cm3 以下のエチレン・α-オレフィン共重合体(B)10~30重量%と、不飽和カルボン酸もしくはその誘導体で一部または全部がグラフト変性された変性ポリプロピレン(C)0.01~10重量%を含有してなる変性ポリプロピレン組成物〔(A-1)+(A-2)+(B)+(C)=100重量%とする。〕であって、
当該プロピレン系重合体(A-1)が、
[1]MFR(230℃、2.16kg荷重) が1~50(g/10分)、
[2]TREFによる溶出ピーク温度が75℃以下であり、且つ、溶出積算値が20℃で0.1重量%未満、
[3]DSCで求めた融点が135℃以下であり、
当該プロピレン系樹脂(A-2)が、TREFによる溶出ピーク温度が75℃を超えるものであることを特徴とする変性ポリプロピレン組成物。
〈3〉前記プロピレン系重合体(A-1)が、メタロセン触媒の存在下にプロピレンの単独重合またはプロピレンとプロピレンを除く炭素数2~20のα-オレフィンとを共重合して得られる(共) 重合体であることを特徴とする前記の変性ポリプロピレン組成物。
〈4〉前記プロピレン系重合体(A-1)のメルトフローレート(MFR;ASTM D1238,230℃、2.16kg荷重)が2~6g/10分であることを特徴とする前記の変性ポリプロピレン組成物。
〈5〉前記の変性ポリプロピレン組成物からなる組成物層と、該組成物層の片面または両面上に設けられた樹脂層とからなる2層または3層構造を含む積層体。
〈6〉前記樹脂層が、少なくとも極性基を有するモノマーを含む重合体からなる層を含むことを特徴とする前記の積層体。
〈7〉プロピレン系重合体(A’-1)60~85重量%とメルトフローレート(MFR;ASTM D1238,230℃、2.16kg荷重)が0.01~40g/10分であり、密度(ASTM D1505)が0.900g/cm3 以下のエチレン・α- オレフィン共重合体(B)10~30重量%と、不飽和カルボン酸もしくはその誘導体で一部または全部がグラフト変性された変性ポリプロピレン(C)0.01~10重量%を含有してなる変性ポリプロピレン組成物〔(A'-1)+(B)+(C)=100重量%とする。〕であって、
当該プロピレン系重合体(A’-1)が、
[1]MFR(230℃、2.16kg荷重)が1~50(g/10分)、
[2’]TREFによる溶出ピーク温度が75℃以下、
[3]DSCで求めた融点が135℃以下、
であることを特徴とする変性ポリプロピレン組成物。
であり、好ましくは、
〈8〉エチレン-ビニルアルコール共重合体からなる層(Z)、前記のいずれかの変性ポリプロピレン組成物からなる層(Y)、および未変性ポリプロピレンからなる層(X)が、この順で積層された積層体。
である。
本発明の変性ポリプロピレン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-1)は、[1]MFRが1~50g/10分を満たし、[2] TREFによる溶出ピーク温度が75℃以下であり、且つ溶出積算値が20℃で0.1重量%以下であり、[3]DSCで求めた融点が135℃以下であるという特徴を有する。
本発明の変性ポリプロピレン組成物に含まれていてもよいプロピレン系重合体(A-2)は、プロピレンの単独重合体あるいはプロピレンと少量のα-オレフィンとの共重合体であり、通常、ポリプロピレンとして製造・販売されている重合体である。これらプロピレン系重合体(A-2)は、単一の重合体であっても、幾つかの異なるプロピレン系重合体の混合物であってもよい。
本発明の変性ポリプロピレン組成物を構成する成分の一つであるエチレン・α- オレフィン共重合体(B)は、メルトフローレート(MFR;ASTM D 1238、230℃、荷重2.16kg)が0.01~40g/10分、好ましくは0.01~20g/10分、さらに好ましくは0.1~10g/10分の範囲内にあり、かつ、密度(ASTM D 1505)が0.900g/cm3以下、好ましくは0.850~0.900g/cm3、さらに好ましくは0.860~0.890g/cm3の範囲内にある。
本発明の変性ポリプロピレン組成物を構成する成分の一つである変性ポリプロピレン(C)は、不飽和カルボン酸および/またはその誘導体でグラフト変性されたポリプロピレンである。
本発明の変性ポリプロピレン組成物は、プロピレン系重合体(A-1)25~85重量%とプロピレン系重合体(A-2)0~45重量%と、メルトフローレート(MFR;ASTM D1238,230℃、2.16kg荷重)が0.01~40g/10分であり、密度(ASTM D1505)が0.900g/cm3 以下のエチレン・α- オレフィン共重合体(B)10~30重量%と、不飽和カルボン酸もしくはその誘導体で一部または全部がグラフト変性された変性ポリプロピレン(C)0.01~10重量%を含有してなる変性ポリプロピレン組成物〔(A-1)+(A-2)+(B)+(C)=100重量%とする。〕である。
本発明の変性ポリプロピレン組成物は、それ単独で使用することも可能であるが、基材に積層した積層体の構成で、積層体の接着層としても好適に使用し得る。
(1)プロピレン系重合体(A-1)、(A’-1)
(i)プロピレン系重合体(A-1-1)の製造
(1)固体触媒担体の製造
1L枝付フラスコにSiO2(洞海化学社製)300gをサンプリングし、トルエン800mlを入れスラリー化した。次に5L四つ口フラスコへ移液し、トルエン260mlを加えた。メチルアミノキサン(以下MAO)トルエン溶液(アルべマール社製10wt%溶液)を2830ml導入し、室温下で30分間攪拌した。1時間かけて110℃まで昇温し、同温度で4時間攪拌処理を行った。攪拌終了後、室温まで冷却した。冷却後、上澄みトルエンを抜き出し、フレッシュなトルエンで置換し、置換率が95%になるまで置換を行った。
(2)固体触媒成分の製造(担体への金属触媒成分の担持)
グローブボックス内にて、5L四つ口フラスコにジメチルシリレンビス-(2-メチル-4-フェニルインデニル)ジルコニウムジクロリドを2.0g秤取った。フラスコを外へ出し、トルエン0.46Lと前記(1)で調製したMAO/SiO2/トルエンスラリー1.4Lを窒素下で加え、30分間攪拌し担持を行った。得られたジメチルシリレンビス-(2-メチル-4-フェニルインデニル)ジルコニウムジクロリド/MAO/SiO2/トルエンスラリーはn-ヘプタンにて99%置換を行い、最終的なスラリー量を4.5Lとした。この操作は、室温で行った。
(3)前重合[P-1]
前記固体触媒の製造の項で調製した固体触媒成分202g、トリエチルアルミニウム109mL、n-ヘプタン100Lを内容量200Lの攪拌機付きオートクレーブに挿入し、内温15~20℃に保ちエチレンを2020g挿入し、180分間攪拌しながら反応させた。重合終了後、固体成分を沈降させ、上澄み液の除去およびn-ヘプタンによる洗浄を2回行った。得られた前重合触媒を精製ヘプタンに再懸濁して、固体触媒成分濃度で2g/Lとなるよう、n-ヘプタンにより調整を行った。一部、サンプリングを行い、前重合体の分析を行った。この前重合体は固体触媒成分1g当りポリエチレンを10g含んでいた。
(4)予備重合[P-2]
内容量58Lの管状重合器にプロピレンを57kg/hr、水素を4NL/hr、前重合で製造した触媒スラリーを固体触媒成分として3.5g/hr、トリエチルアルミニウム2.3mL/hrを連続的に供給し、気相の存在しない満液の状態にて重合した。管状反応器の温度は30℃であり、圧力は2.6MPa・Gであった。
(5)本重合[P-3]
前記の(3)予重合で得られたスラリーを内容量1000Lの攪拌機付きベッセル重合器へ送り、更に重合を行った。重合器へは、プロピレンを50kg/hr、エチレンを2.0kg/hr、水素を気相部の水素濃度が0.15mol%になるように供給した。重合温度60℃、圧力2.5MPa・Gで重合を行った。
(6)得られたプロピレン・エチレンランダム共重合体を以下の成形・加工方法[a1]ペレット化法に準拠してペレット化を行い、プロピレン系重合体(A-1-1)を得た。
(ii)プロピレン系重合体(A-1-2)
予重合を以下の様に変えた以外はプロピレン系重合体(A-1-1)と同様の方法で行った。
(4)予備重合[P-2]
内容量58Lの管状重合器にプロピレンを57kg/hr、水素を4NL/hr、前重合で製造した触媒スラリーを固体触媒成分として4.7g/hr、トリエチルアルミニウム3.1mL/hrを連続的に供給し、気相の存在しない満液の状態にて重合した。管状反応器の温度は30℃であり、圧力は2.6MPa・Gであった。
(6)得られたプロピレン系重合体(A-1-2)を以下の成形・加工方法[a1]ペレット化法に準拠してペレット化を行い、プロピレン系重合体(A-1-2)を得た。
(i)プロピレン系重合体(A-2-1)
株式会社プライムポリマー製ランダムポリプロピレン(商品名 F327):MFR=7.2g/10分、密度=0.900g/cm3、TREFによる溶出ピーク温度:95.2℃、TREFによる20℃での溶出積算値:0.4重量%
(3)エチレン・α-オレフィン共重合体(B)
(i)エチレン・プロピレン共重合体(B-1)
三井化学株式会社製エチレン・プロピレンランダム共重合体(商品名:タフマーP-0680):MFR=7.0g/10分、密度=0.870g/cm3
(4)変性ポリプロピレン(C)
(i)変性プロピレン単独重合体(C-1)
反応溶媒としてトルエンを用い、トルエン5.7リットル当たり825gのプロピレン単独重合体を160℃で溶解させた。次に、このトルエン溶液に無水マレイン酸のトルエン溶液(4.13g/250ml)およびジクミルペルオキシド(DPC)のトルエン溶液(0.33g/50ml)を別々の導管から4時間かけて除々に供給した。
(5)プロピレン系重合体(E)
(i)プロピレン系重合体(E-1)
日本ポリプロ株式会社製メタロセン系ポリプロピレン(商品名:WINTEC WFX4TA):MFR=7.0g/10分、密度=0.900g/cm3、TREFによる溶出ピーク温度:80.4℃、TREF20℃での溶出積算値:0.1重量%未満
[分析方法]
[m1]プロピレン系ランダム共重合体中のエチレン濃度Px(mol%)
プロピレン系ランダム共重合体中のエチレン濃度Px(mol%)を測定するために、サンプル20~30mgを1,2,4-トリクロロベンゼン/重ベンゼン(2:1)溶液0.6mlに溶解後、炭素核磁気共鳴分析(13C-NMR)を行った。プロピレン、エチレン、α-オレフィンの定量はダイアッド連鎖分布より求めた。例えば、プロピレン-エチレン共重合体の場合、PP=Sαα、EP=Sαγ+Sαβ、EE=1/2(Sβδ+Sδδ)+1/4Sγδを用い、以下の計算式(Eq-7)および(Eq-8)により求めた。
プロピレン(mol%)=(PP+1/2EP)x100/(PP+1/2EP)+(1/2EP+EE)・・・(Eq-7)
エチレン(mol%)=(1/2EP+EE)x100/(PP+1/2EP)+(1/2EP+EE)・・・(Eq-8)
その他、α-オレフィンとの帰属については、Macromolecules1982,15,1150、Macromolecules1991,24,4813、J.Appl.Polym.Sci.,1991,42,399等の公開情報を参照した。
[m2]融点(Tm)
示差走査熱量計(DSC、パーキンエルマー社製)を用いて測定を行った。ここで、第3stepにおける吸熱ピークを融点(Tm)と定義した。
(測定条件)
第1step : 10℃/分で240℃まで昇温し、10分間保持する。
第2step : 10℃/分で60℃まで降温する。
第3step : 10℃/分で240℃まで昇温する。
[m3]分子量分布(Mw/Mn)[重量平均分子量(Mw)、数平均分子量(Mn)]
ウォーターズ社製GPC150C Plusを用い以下の様にして測定した。分離カラムは、TSKgel GMH6-HT及びTSKgel GMH6-HTLであり、カラムサイズはそれぞれ内径7.5mm、長さ600mmであり、カラム温度は140℃とし、移動相にはo-ジクロロベンゼン(和光純薬工業)および酸化防止剤としてBHT(和光純薬工業)0.025重量%を用い、1.0ml/minで移動させ、試料濃度は0.1重量%とし、試料注入量は500マイクロリットルとし、検出器として示差屈折計を用いた。標準ポリスチレンは、分子量がMw<1000およびMw>4×106については東ソー社製を用い、1000≦Mw≦4×106についてはプレッシャーケミカル社製を用いた。
CFCは組成分別を行う温度上昇溶離分別(TREF)部と、分子量分別を行うGPC部とを備えた下記装置を用いて、下記条件で測定し、40℃以下溶出成分の量を算出した。
測定装置 : CFC T-150A型、三菱油化(株)製、商標
カラム : Shodex AT-806MS(3本)
溶解液 : o-ジクロロベンゼン
流速 : 1.0 ml/min
試料濃度 : 0.3 wt/vol%(0.1%BHT入り)
注入量 : 0.5 ml
溶解性 : 完全溶解
検出器 : 赤外吸光検出法、3.42μ(2924cm-1)、NaCl板
溶出温度 :0~135℃、28フラクション[0, 10, 20, 30, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 94, 97, 100, 103, 106, 109, 112, 115, 118, 121, 124, 127, 135 ℃]
[m5]メルトフローレート(MFR)
ASTM D-1238の方法により230℃、荷重2.16kgで測定した。
[m6]曲げ弾性率
ASTM D-790に準拠して測定した。
[m7]引張弾性率
ASTM D-638に準拠して測定した。
[m8]接着強度
剥離雰囲気温度23℃、剥離速度300mm/分、ピール幅15mmの条件でT型剥離して求めた。
[a1]プロピレン系ランダム共重合体粒子のペレット化法
プロピレン系ランダム共重合体100重量部に、酸化防止剤としてテトラキス[メチレン-3(3,5-ジ-t-ブチル-4-ヒドロキシフェニル)プロピオネート]メタンを0.1重量部、2,4-ビス(1,1-ジメチル)-フォスフェイトフェノールを0.1重量部、中和剤としてステアリン酸カルシウムを0.1重量部、合成シリカを0.15重量部、エルカ酸アミドを0.1重量部 配合し、KTX-30二軸押出機を用いて、樹脂温250℃で溶融混練してプロピレン系ランダム共重合体のペレット化を行った。
(1)変性ポリプロピレン組成物(S-1)の製造
プロピレン系重合体(A-2-1)68重量%、エチレン・プロピレン共重合体(B-1)25重量%、変性プロピレン単独重合体(C-1)7重量%を予備混合し、単軸押出機(ダイ径65mmφ、L/D=28)を用いて220℃の温度で溶融混練した後ストランド状に押出し、切断してペレットを製造し、変性ポリプロピレン組成物(S-1)を得た。
(2)積層構造体(F-1)の製造
三台の押出機を1つのダイに結合した押出成形装置を用いて、それぞれの押出機に、プロピレン系重合体(A-2-1)、上記の(1)で得た変性ポリプロピレン組成物(S-1)、株式会社クラレ製エチレン-ビニルアルコール共重合体(EVOH)(グレードF101A; MFR=1.6g/10分、密度=1190kg/m3)を供給し、押し出し時の最高温度を共に240℃になるように設定して、押出成形装置のTダイ(ダイ幅は350mm)から、プロピレン系重合体(A-2-1)(160μm)/変性ポリプロピレン組成物(S-1)(40μm)/EVOH(40μm)の順に積層した三層構造になるようにして5m/minの成形速度で共押出成形を行って、(X)層がプロピレン系重合体層、(Y)層が変性ポリプロピレン組成物層、(Z)層がEVOH層である3層からなる積層構造体(積層フィルムからなる積層体)を製造した。
(1)変性ポリプロピレン組成物(S-2)の製造
プロピレン系重合体(A-2-1)48重量%、プロピレン系重合体(A-1-1)20重量%、エチレン・プロピレン共重合体(B-1)25重量%、変性プロピレン単独重合体(C-1)7重量%を予備混合し、単軸押出機(ダイ径65mmφ、L/D=28)を用いて220℃の温度で溶融混練した後ストランド状に押出し、切断してペレットを製造し、変性ポリプロピレン組成物(S-2)を得た。
(2)積層構造体(F-2)の製造
三台の押出機を1つのダイに結合した押出成形装置を用いて、それぞれの押出機に、プロピレン系重合体(A-2-1)、上記の(1)で得た変性ポリプロピレン組成物(S-2)、上記EVOHを供給し、押し出し時の最高温度を共に240℃になるように設定して、押出成形装置のTダイ(ダイ幅は350mm)から、プロピレン系重合体(A-2-1)(160μm)/変性ポリプロピレン組成物(S-2)(40μm)/EVOH(40μm)の順に積層した三層構造になるようにして5m/minの成形速度で共押出成形を行って、(X)層がプロピレン系重合体層、(Y)層が変性ポリプロピレン組成物層、(Z)層がEVOH層である3層からなる積層構造体(積層フィルム)を製造した。
(1)変性ポリプロピレン組成物(S-3)の製造
プロピレン系重合体(A-2-1)33重量%、プロピレン系重合体(A-1-1)35重量%、エチレン・プロピレン共重合体(B-1)25重量%、変性プロピレン単独重合体(C-1)7重量%を予備混合し、単軸押出機(ダイ径65mmφ、L/D=28)を用いて220℃の温度で溶融混練した後ストランド状に押出し、切断してペレットを製造し、変性ポリプロピレン組成物(S-3)を得た。
(2)積層構造体(F-3)の製造
三台の押出機を1つのダイに結合した押出成形装置を用いて、それぞれの押出機に、プロピレン系重合体(A-2-1)、上記の(1)で得た変性ポリプロピレン組成物(S-3)、上記EVOHを供給し、押し出し時の最高温度を共に240℃になるように設定して、押出成形装置のTダイ(ダイ幅は350mm)から、プロピレン系重合体(A-2-1)(160μm)/変性ポリプロピレン組成物(S-3)(40μm)/EVOH(40μm)の順に積層した三層構造になるようにして5m/minの成形速度で共押出成形を行って、(X)層がプロピレン系重合体層、(Y)層が変性ポリプロピレン組成物層、(Z)層がEVOH層である3層からなる積層構造体(積層フィルム)を製造した。
(1)変性ポリプロピレン組成物(S-4)の製造
プロピレン系重合体(A-2-1)18重量%、プロピレン系重合体(A-1-1)50重量%、エチレン・プロピレン共重合体(B-1)25重量%、変性プロピレン単独重合体(C-1)7重量%を予備混合し、単軸押出機(ダイ径65mmφ、L/D=28)を用いて220℃の温度で溶融混練した後ストランド状に押出し、切断してペレットを製造し、変性ポリプロピレン組成物(S-4)を得た。
(2)積層構造体(F-4)の製造
三台の押出機を1つのダイに結合した押出成形装置を用いて、それぞれの押出機に、プロピレン系重合体(A-2-1)、上記の(1)で得た変性ポリプロピレン組成物(S-4)、上記EVOHを供給し、押し出し時の最高温度を共に240℃になるように設定して、押出成形装置のTダイ(ダイ幅は350mm)から、プロピレン系重合体(A-2-1)(160μm)/変性ポリプロピレン組成物(S-4)(40μm)/EVOH(40μm)の順に積層した三層構造になるようにして5m/minの成形速度で共押出成形を行って、(X)層がプロピレン系重合体層、(Y)層が変性ポリプロピレン組成物層、(Z)層がEVOH層である3層からなる積層構造体(積層フィルム)を製造した。
(1)変性ポリプロピレン組成物(S-5)の製造
プロピレン系重合体(A-1-1)68重量%、エチレン・プロピレン共重合体(B-1)25重量%、変性プロピレン単独重合体(C-1)7重量%を予備混合し、単軸押出機(ダイ径65mmφ、L/D=28)を用いて220℃の温度で溶融混練した後ストランド状に押出し、切断してペレットを製造し、変性ポリプロピレン組成物(S-5)を得た。
(2)積層構造体(F-5)の製造
三台の押出機を1つのダイに結合した押出成形装置を用いて、それぞれの押出機に、プロピレン系重合体(A-2-1)、上記の(1)で得た変性ポリプロピレン組成物(S-5)、上記EVOHを供給し、押し出し時の最高温度を共に240℃になるように設定して、押出成形装置のTダイ(ダイ幅は350mm)から、プロピレン系重合体(A-2-1)(160μm)/変性ポリプロピレン組成物(S-5)(40μm)/EVOH(40μm)の順に積層した三層構造になるようにして5m/minの成形速度で共押出成形を行って、(X)層がプロピレン系重合体層、(Y)層が変性ポリプロピレン組成物層、(Z)層がEVOH層である3層からなる積層構造体(積層フィルム)を製造した。
(1)変性ポリプロピレン組成物(S-6)の製造
プロピレン系重合体(A-1-1)88重量%、エチレン・プロピレン共重合体(B-1)5重量%、変性プロピレン単独重合体(C-1)7重量%を予備混合し、単軸押出機(ダイ径65mmφ、L/D=28)を用いて220℃の温度で溶融混練した後ストランド状に押出し、切断してペレットを製造し、変性ポリプロピレン組成物(S-6)を得た。
(2)積層構造体(F-6)の製造
三台の押出機を1つのダイに結合した押出成形装置を用いて、それぞれの押出機に、プロピレン系重合体(A-2-1)、上記の(1)で得た変性ポリプロピレン組成物(S-6)、上記EVOHを供給し、押し出し時の最高温度を共に240℃になるように設定して、押出成形装置のTダイ(ダイ幅は350mm)から、プロピレン系重合体(A-2-1)(160μm)/変性ポリプロピレン組成物(S-6)(40μm)/EVOH(40μm)の順に積層した三層構造になるようにして5m/minの成形速度で共押出成形を行って、(X)層がプロピレン系重合体層、(Y)層が変性ポリプロピレン組成物層、(Z)層がEVOH層である3層からなる積層構造体(積層フィルム)を製造した。
(1)変性ポリプロピレン組成物(S-7)の製造
プロピレン系重合体(A-2-1)48重量%、プロピレン系重合体(A-1-2)20重量%、エチレン・プロピレン共重合体(B-1)25重量%、変性プロピレン単独重合体(C-1)7重量%を予備混合し、単軸押出機(ダイ径65mmφ、L/D=28)を用いて220℃の温度で溶融混練した後ストランド状に押出し、切断してペレットを製造し、変性ポリプロピレン組成物(S-7)を得た。
(2)積層構造体(F-7)の製造
三台の押出機を1つのダイに結合した押出成形装置を用いて、それぞれの押出機に、プロピレン系重合体(A-2-1)、上記の(1)で得た変性ポリプロピレン組成物(S-7)、上記EVOHを供給し、押し出し時の最高温度を共に240℃になるように設定して、押出成形装置のTダイ(ダイ幅は350mm)から、プロピレン系重合体(A-2-1)(160μm)/変性ポリプロピレン組成物(S-7)(40μm)/EVOH(40μm)の順に積層した三層構造になるようにして5m/minの成形速度で共押出成形を行って、(X)層がプロピレン系重合体層、(Y)層が変性ポリプロピレン組成物層、(Z)層がEVOH層である3層からなる積層構造体(積層フィルム)を製造した。
(1)変性ポリプロピレン組成物(S-8)の製造
プロピレン系重合体(A-2-1)33重量%、プロピレン系重合体(A-1-2)35重量%、エチレン・プロピレン共重合体(B-1)25重量%、変性プロピレン単独重合体(C-1)7重量%を予備混合し、単軸押出機(ダイ径65mmφ、L/D=28)を用いて220℃の温度で溶融混練した後ストランド状に押出し、切断してペレットを製造し、変性ポリプロピレン組成物(S-8)を得た。
(2)積層構造体(F-8)の製造
三台の押出機を1つのダイに結合した押出成形装置を用いて、それぞれの押出機に、プロピレン系重合体(A-2-1)、上記の(1)で得た変性ポリプロピレン組成物(S-8)、上記EVOHを供給し、押し出し時の最高温度を共に240℃になるように設定して、押出成形装置のTダイ(ダイ幅は350mm)から、プロピレン系重合体(A-2-1)(160μm)/変性ポリプロピレン組成物(S-8)(40μm)/EVOH(40μm)の順に積層した三層構造になるようにして5m/minの成形速度で共押出成形を行って、(X)層がプロピレン系重合体層、(Y)層が変性ポリプロピレン組成物層、(Z)層がEVOH層である3層からなる積層構造体(積層フィルム)を製造した。
(1)変性ポリプロピレン組成物(S-9)の製造
プロピレン系重合体(A-2-1)18重量%、プロピレン系重合体(A-1-2)50重量%、エチレン・プロピレン共重合体(B-1)25重量%、変性プロピレン単独重合体(C-1)7重量%を予備混合し、単軸押出機(ダイ径65mmφ、L/D=28)を用いて220℃の温度で溶融混練した後ストランド状に押出し、切断してペレットを製造し、変性ポリプロピレン組成物(S-9)を得た。
(2)積層構造体(F-9)の製造
三台の押出機を1つのダイに結合した押出成形装置を用いて、それぞれの押出機に、プロピレン系重合体(A-2-1)、上記の(1)で得た変性ポリプロピレン組成物(S-9)、上記EVOHを供給し、押し出し時の最高温度を共に240℃になるように設定して、押出成形装置のTダイ(ダイ幅は350mm)から、プロピレン系重合体(A-2-1)(160μm)/変性ポリプロピレン組成物(S-9)(40μm)/EVOH(40μm)の順に積層した三層構造になるようにして5m/minの成形速度で共押出成形を行って、(X)層がプロピレン系重合体層、(Y)層が変性ポリプロピレン組成物層、(Z)層がEVOH層である3層からなる積層構造体(積層フィルム)を製造した。
(1)変性ポリプロピレン組成物(S-10)の製造
プロピレン系重合体(A-1-2)68重量%、エチレン・プロピレン共重合体(B-1)25重量%、変性プロピレン単独重合体(C-1)7重量%を予備混合し、単軸押出機(ダイ径65mmφ、L/D=28)を用いて220℃の温度で溶融混練した後ストランド状に押出し、切断してペレットを製造し、変性ポリプロピレン組成物(S-9)を得た。
(2)積層構造体(F-10)の製造
三台の押出機を1つのダイに結合した押出成形装置を用いて、それぞれの押出機に、プロピレン系重合体(A-2-1)、上記の(1)で得た変性ポリプロピレン組成物(S-10)、上記EVOHを供給し、押し出し時の最高温度を共に240℃になるように設定して、押出成形装置のTダイ(ダイ幅は350mm)から、プロピレン系重合体(A-2-1)(160μm)/変性ポリプロピレン組成物(S-10)(40μm)/EVOH(40μm)の順に積層した三層構造になるようにして5m/minの成形速度で共押出成形を行って、(X)層がプロピレン系重合体層、(Y)層が変性ポリプロピレン組成物層、(Z)層がEVOH層である3層からなる積層構造体(積層フィルム)を製造した。
(1)変性ポリプロピレン組成物(S-11)の製造
プロピレン系重合体(A-1-2)88重量%、エチレン・プロピレン共重合体(B-1)5重量%、変性プロピレン単独重合体(C-1)7重量%を予備混合し、単軸押出機(ダイ径65mmφ、L/D=28)を用いて220℃の温度で溶融混練した後ストランド状に押出し、切断してペレットを製造し、変性ポリプロピレン組成物(S-11)を得た。
(2)積層構造体(F-11)の製造
三台の押出機を1つのダイに結合した押出成形装置を用いて、それぞれの押出機に、プロピレン系重合体(A-2-1)、上記の(1)で得た変性ポリプロピレン組成物(S-11)、上記EVOHを供給し、押し出し時の最高温度を共に240℃になるように設定して、押出成形装置のTダイ(ダイ幅は350mm)から、プロピレン系重合体(A-2-1)(160μm)/変性ポリプロピレン組成物(S-11)(40μm)/EVOH(40μm)の順に積層した三層構造になるようにして5m/minの成形速度で共押出成形を行って、(X)層がプロピレン系重合体層、(Y)層が変性ポリプロピレン組成物層、(Z)層がEVOH層である3層からなる積層構造体(積層フィルム)を製造した。
(1)変性ポリプロピレン組成物(S-12)の製造
プロピレン系重合体(E-1)68重量%、エチレン・プロピレン共重合体(B-1)25重量%、変性プロピレン単独重合体(C-1)7重量%を予備混合し、単軸押出機(ダイ径65mmφ、L/D=28)を用いて220℃の温度で溶融混練した後ストランド状に押出し、切断してペレットを製造し、変性ポリプロピレン組成物(S-12)を得た。
(2)積層構造体(F-12)の製造
三台の押出機を1つのダイに結合した押出成形装置を用いて、それぞれの押出機に、プロピレン系重合体(A-2-1)、上記の(1)で得た変性ポリプロピレン組成物(S-12)、上記EVOHを供給し、押し出し時の最高温度を共に240℃になるように設定して、押出成形装置のTダイ(ダイ幅は350mm)から、プロピレン系重合体(A-2-1)(160μm)/変性ポリプロピレン組成物(S-12)(40μm)/EVOH(40μm)の順に積層した三層構造になるようにして5m/minの成形速度で共押出成形を行って、(X)層がプロピレン系重合体層、(Y)層が変性ポリプロピレン組成物層、(Z)層がEVOH層である3層からなる積層構造体(積層フィルム)を製造した。
(X)/(Y)/(Z)=160/40/40(μm) @5m/min(延伸前後の接着力測定)
(X)/(Y)/(Z)=40/10/20(μm) @20m/min
(X)/(Y)/(Z)=20/5/10(μm) @40m/min
(X)/(Y)/(Z)=10/2.5/5(μm) @80m/min
Claims (8)
- プロピレン系重合体(A-1)60~85重量%とメルトフローレート(MFR;ASTM D1238,230℃、2.16kg荷重)が0.01~40g/10分であり、密度(ASTM D1505)が0.900g/cm3 以下のエチレン・α-オレフィン共重合体(B)10~30重量%と、不飽和カルボン酸もしくはその誘導体で一部または全部がグラフト変性された変性ポリプロピレン(C)0.01~10重量%を含有してなる変性ポリプロピレン組成物〔(A-1)+(B)+(C)=100重量%とする。〕であって、
当該プロピレン系重合体(A-1)が、
[1]MFR(230℃、2.16kg荷重)が1~50(g/10分)、
[2]TREFによる溶出ピーク温度が75℃以下であり、且つ溶出積算値が20℃で0.1重量%未満、
[3]DSCで求めた融点が135℃以下、
であることを特徴とする変性ポリプロピレン組成物。 - プロピレン系重合体(A-1)25~85重量%とプロピレン系重合体(A-2)0~45重量%と、メルトフローレート(MFR;ASTM D1238,230℃、2.16kg荷重)が0.01~40g/10分であり、密度(ASTM D1505)が0.900g/cm3 以下のエチレン・α-オレフィン共重合体(B)10~30重量%と、不飽和カルボン酸もしくはその誘導体で一部または全部がグラフト変性された変性ポリプロピレン(C)0.01~10重量%を含有してなる変性ポリプロピレン組成物〔(A-1)+(A-2)+(B)+(C)=100重量%とする。〕であって、
当該プロピレン系重合体(A-1)が、
[1]MFR(230℃、2.16kg荷重) が1~50(g/10分)、
[2]TREFによる溶出ピーク温度が75℃以下であり、且つ溶出積算値が20℃で0.1重量%未満、
[3]DSCで求めた融点が135℃以下であり、
当該プロピレン系樹脂(A-2)が、TREFによる溶出ピーク温度が75℃を超えるものであることを特徴とする変性ポリプロピレン組成物。 - 前記プロピレン系重合体(A-1)が、メタロセン触媒の存在下にプロピレンの単独重合またはプロピレンとプロピレンを除く炭素数2~20のα-オレフィンとを共重合して得られる(共) 重合体であることを特徴とする請求項1または2に記載の変性ポリプロピレン組成物。
- 前記プロピレン系重合体(A-1)のメルトフローレート(MFR;ASTM D1238,230℃、2.16kg荷重)が2~6g/10分であることを特徴とする請求項1または2に記載の変性ポリプロピレン組成物。
- 請求項1または2に記載の変性ポリプロピレン組成物からなる組成物層と、該組成物層の片面または両面上に設けられた樹脂層とからなる2層または3層構造を含む積層体。
- 前記樹脂層が、少なくとも極性基を有するモノマーを含む重合体からなる層を含むことを特徴とする請求項5に記載の積層体。
- プロピレン系重合体(A’-1)60~85重量%とメルトフローレート(MFR;ASTM D1238,230℃、2.16kg荷重)が0.01~40g/10分であり、密度(ASTM D1505)が0.900g/cm3 以下のエチレン・α-オレフィン共重合体(B)10~30重量%と、不飽和カルボン酸もしくはその誘導体で一部または全部がグラフト変性された変性ポリプロピレン(C)0.01~10重量%を含有してなる変性ポリプロピレン組成物〔(A'-1)+(B)+(C)=100重量%とする。〕であって、
当該プロピレン系重合体(A’-1)が、
[1]MFR(230℃、2.16kg荷重)が1~50(g/10分)、
[2’]TREFによる溶出ピーク温度が75℃以下、
[3]DSCで求めた融点が135℃以下、
であることを特徴とする変性ポリプロピレン組成物。 - エチレン-ビニルアルコール共重合体からなる層(Z)、請求項1、2、7のいずれか1項に記載の変性ポリプロピレン組成物からなる層(Y)、および未変性ポリプロピレンからなる層(X)が、この順で積層された積層体。
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JP2016522758A (ja) * | 2013-03-18 | 2016-08-04 | ダウ グローバル テクノロジーズ エルエルシー | 紙熱積層用のフィルム組成物 |
US11123964B2 (en) | 2013-03-18 | 2021-09-21 | Dow Global Technologies Llc | Film composition for paper thermal lamination application |
WO2015083702A1 (ja) | 2013-12-06 | 2015-06-11 | 三井化学株式会社 | 積層体、それを使用した包装材料およびその製造方法 |
US10000849B2 (en) | 2013-12-06 | 2018-06-19 | Mitsui Chemicals, Inc. | Laminate, packaging material using the same and production process for the same |
JP2020093428A (ja) * | 2018-12-11 | 2020-06-18 | 三井化学株式会社 | 組成物層および金属層を有する複合体 |
JP7134853B2 (ja) | 2018-12-11 | 2022-09-12 | 三井化学株式会社 | 組成物層および金属層を有する複合体 |
WO2023022168A1 (ja) * | 2021-08-18 | 2023-02-23 | 三井化学株式会社 | 接着性樹脂組成物およびフィルム |
Also Published As
Publication number | Publication date |
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EP2650328A4 (en) | 2014-07-09 |
JP5735004B2 (ja) | 2015-06-17 |
US9447267B2 (en) | 2016-09-20 |
CN103210034B (zh) | 2015-09-30 |
US20130273386A1 (en) | 2013-10-17 |
CN103210034A (zh) | 2013-07-17 |
JPWO2012077706A1 (ja) | 2014-05-22 |
EP2650328B1 (en) | 2016-07-27 |
EP2650328A1 (en) | 2013-10-16 |
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