WO2007094376A1 - エチレン系樹脂およびそれからなるブロー成形体 - Google Patents
エチレン系樹脂およびそれからなるブロー成形体 Download PDFInfo
- Publication number
- WO2007094376A1 WO2007094376A1 PCT/JP2007/052646 JP2007052646W WO2007094376A1 WO 2007094376 A1 WO2007094376 A1 WO 2007094376A1 JP 2007052646 W JP2007052646 W JP 2007052646W WO 2007094376 A1 WO2007094376 A1 WO 2007094376A1
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- WIPO (PCT)
- Prior art keywords
- ethylene
- resin
- polyethylene
- polymerization
- mfr
- Prior art date
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- 239000011651 chromium Substances 0.000 description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N dodecane Chemical compound CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
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- GDOPTJXRTPNYNR-UHFFFAOYSA-N methylcyclopentane Chemical compound CC1CCCC1 GDOPTJXRTPNYNR-UHFFFAOYSA-N 0.000 description 2
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- NKFNBVMJTSYZDV-UHFFFAOYSA-N 2-[dodecyl(2-hydroxyethyl)amino]ethanol Chemical compound CCCCCCCCCCCCN(CCO)CCO NKFNBVMJTSYZDV-UHFFFAOYSA-N 0.000 description 1
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- 244000042314 Vigna unguiculata Species 0.000 description 1
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- 125000003118 aryl group Chemical group 0.000 description 1
- 125000000751 azo group Chemical group [*]N=N[*] 0.000 description 1
- IRERQBUNZFJFGC-UHFFFAOYSA-L azure blue Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[S-]S[S-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] IRERQBUNZFJFGC-UHFFFAOYSA-L 0.000 description 1
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- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- XMGMFRIEKMMMSU-UHFFFAOYSA-N phenylmethylbenzene Chemical group C=1C=CC=CC=1[C]C1=CC=CC=C1 XMGMFRIEKMMMSU-UHFFFAOYSA-N 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
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- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
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- 239000004094 surface-active agent Substances 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- MCULRUJILOGHCJ-UHFFFAOYSA-N triisobutylaluminium Chemical group CC(C)C[Al](CC(C)C)CC(C)C MCULRUJILOGHCJ-UHFFFAOYSA-N 0.000 description 1
- AZSKHRTUXHLAHS-UHFFFAOYSA-N tris(2,4-di-tert-butylphenyl) phosphate Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(=O)(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C AZSKHRTUXHLAHS-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/16—Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F10/02—Ethene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
-
- 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
-
- 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
- C08L23/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/10—Applications used for bottles
-
- 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
-
- 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
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/1397—Single layer [continuous layer]
Definitions
- the present invention relates to a polyethylene resin having excellent strength and moldability and a professional molded body (hollow molded body) made of the resin.
- Patent Document 1 Japanese Translation of Special Publication 2003—507538
- the present invention is intended to solve the problems associated with the prior art as described above, and has a high bending elastic modulus and excellent buckling strength, and is excellent in bottle ESCR and is less susceptible to environmental stress cracking. Regardless, the object is to provide a polyethylene resin excellent in moldability and a hollow molded body made of the resin.
- the ethylene resin of the present invention is characterized in that the following requirements [a] to [c] are simultaneously satisfied.
- Environmental stress fracture resistance (ES CR) T measured at 50 ° C according to ASTM-D-1693 is flexural modulus lOOOMPa ⁇ : 1500MPa ⁇ In the case of 1500MPa to 2000MPa, it must be 100 hours or more.
- the melt tension force at 190 ° C. is 3 ⁇ 40 (mN) or more.
- melt stretch breaking speed is 90 (m / min) or less.
- MFR (g / lOmin) measured at 2.16kg load at C is not less than 0.10 and less than 2.0.
- MFR ratio which is the ratio of MFR (g / lOmin) measured at 2.16kg load to C and HLMFR (gZlOmin) measured at 21.6kg load R / MFR) must be 50 or more and less than 150.
- the present invention relates to a blow molded article formed from the ethylene resin, preferably a fuel tank, an industrial chemical can or a bottle container.
- the ethylene-based resin of the present invention is excellent in rigidity and ESCR, and also in the stability and cutability of the parison, and the bottle formed from the resin is also excellent in appearance.
- the ethylene-based resin and hollow molded article of the present invention include detergents, shampoos, rinses, bleaches, softeners, cosmetics, waxes, edible oils, mayonnaise, knead wasabi, containers, fuel tanks, drug cans, drums It can be suitably used for applications such as water storage tanks.
- the ethylene-based resin of the present invention satisfies the above-described requirements [a] to [c], and preferably satisfies the requirements [d] to [f] in addition to [a] to [c]. These requirements are described in detail below.
- the ethylene-based resin of the present invention has an ESCR (environmental stress fracture resistance) T measured according to ASTM-D-1698 of at least 500 hours when the flexural modulus is lOOOMPa or more and less than 1500 MPa, preferably 600 hours.
- the time is 1000 hours or less, more preferably 600 hours or more and 1000 hours or less.
- the flexural modulus is 1500 MPa or more and less than 2000 MPa, it is 100 hours or more, preferably 100 hours or more and 500 hours or less, and more preferably 150 hours or more and 500 hours or less.
- T of the ethylene-based resin has 3 carbon atoms such as propylene, butene-1, hexene-1, 4-methylpentene-1, and otaten-1 in the ethylene main chain in the ethylene polymer (E) described later.
- Cowpea to be copolymerized in the range of 0 - 5 mole 0/0 Te can be adjusted within the above range.
- Comonomers copolymerized to reduce wrinkles To reduce the amount and conversely increase T, the comonomer amount should be increased.
- the ethylene resin of the present invention has a melt tension at 190 ° C of 50 (mN) or more, preferably 50 (mN) or more and 300 (mN) or less, more preferably 55 (mN) or more, 300 (mN) It is as follows.
- a melt tension of 50 (mN) or more is preferable in terms of stability during parison extrusion.
- Examples of a method for increasing the melt tension of an ethylene-based resin include a method of blending a low MFR polyethylene or a polyethylene having a long chain branch. It is known that low MFR polyethylene can be obtained by controlling the hydrogen / ethylene ratio during polymerization. Examples of the polyethylene having a long chain branch include a high-pressure polyethylene, a polyethylene polymerized using a chromium catalyst, and a polyethylene polymerized using a meta-octene. In other words, the melt tension of the ethylene-based resin can be controlled within the above range by controlling the blend amount of low MFR polyethylene or polyethylene having long chain branches.
- the ethylene-based resin of the present invention has a melt stretch breaking speed of 90 (m / min) or less, preferably 1 min or more and 80 min or less.
- a melt stretch breaking speed of 90 (m / min) or less is preferable because of excellent cutability when a parison is cut.
- a method for reducing the melt stretch breaking rate of an ethylene-based resin for example, there is a method of blending low MFR polyethylene or polyethylene having a long chain branch. It is known that low MFR polyethylene can be obtained by controlling the hydrogen / ethylene ratio during polymerization. Examples of polyethylene having a long chain branch include high pressure polyethylene, polyethylene polymerized using a chromium-based catalyst, and polyethylene polymerized using meta-octane. That is, by controlling the blend amount of low MFR polyethylene or polyethylene having long chain branches, it is possible to make the melt stretch breaking rate of the ethylene resin within the above range.
- the ethylene resin of the present invention has a flexural modulus M measured according to JIS K6922-2 of 10 OOMPa or more and 2000 MPa or less, preferably lOOMPa or more and 1800 MPa or less, more preferably 1200 MPa or more and 1700 MPa or less.
- High rigidity is preferable because the bottle buckling strength is increased when a hollow molded body is formed. Further, it is preferable to increase the elastic modulus because there is an advantage that the bottle buckling strength is improved and the thickness can be reduced.
- a method of increasing the flexural modulus of the ethylene-based resin for example, there is a method of increasing the density of the resin.
- a known method such as reducing the amount of comonomer during polymerization may be used.
- the ethylene resin of the present invention preferably has a melt flow rate measured at 190 ° C and a load of 2.16 kg in accordance with JIS K7210 in the range of 0:! To 20 (g / l0min). . More preferably, it is in the range of 0.2 to 1.5 (g / l 0 min). Within this range, good moldability, that is, good fluidity at the time of moldability is maintained and extrusion characteristics are excellent.
- the ethylene resin of the present invention is obtained by dividing the melt flow rate (HLMFR) value measured at 21.6 kg load by the melt flow rate (MFR) value measured at 2.16 kg load (HLM FR / MFR).
- the force is 50 or more and less than 150, preferably 70 or more and less than 125.
- a hollow molded article using a polyethylene resin in this range is excellent in the appearance of the bottle.
- a preferred embodiment of the blow molded article of the present invention is a hollow molded article, which may be a single layer or a multilayer.
- a hollow molded body is suitably used as a storage bottle container for fuel tanks, industrial chemical cans, detergents, whitening agents, softeners, and the like.
- the ethylene-based resin of the present invention satisfies the above-mentioned requirements [a] to [c], preferably the above-mentioned requirements [d] to [f] in addition to [a] to [c],
- the composition ratio and the composition method are not particularly limited.
- the above-mentioned requirements [a] to [c], preferably [a] to [f] are satisfied with an ethylene polymer (E) described later as an essential component. It is prepared by blending an olefin-based resin (R) in which the above-mentioned requirement [a] is different from that of the ethylene-based polymer (E) within the range to satisfy.
- polyolefin resins (R) include ethylene polymers, propylene polymers, butene polymers, 4-methyl-1-pentene polymers, 3_methyl_1-butene polymers. Examples thereof include a polymer, a 1-hexene polymer, and a 1-octene polymer. Among these, an ethylene polymer ( ⁇ ′) having a different requirement [a] from the ethylene polymer (E) is preferable.
- ethylene polymers ( ⁇ ') examples include low-density polyethylene produced by Ziegler-Natta catalysts such as Ultzettas 15150J and Ultzettas 20100J (trade name, manufactured by Prime Polymer Co., Ltd.), Evolyu SP1540, and AB SP Meta-Polycene catalyzed low-density polyethylene such as Milason 11P, Mirason 14P (trade name, Prime Polymer Co., Ltd.) and other high-pressure low-density polyethylene, Hi-Zex 7800 M, A high density polyethylene such as Hi-zex 1810J (trade name, manufactured by Prime Polymer Co., Ltd.) can be exemplified.
- high-pressure low-density polyethylene, high-density polyethylene or linear low-density polyethylene is preferable.
- the ethylene polymer occupies the ethylene resin.
- the total amount of ( ⁇ ) and the ethylene-based polymer ( ⁇ ′) is usually 70% by weight or more, preferably 80% by weight or more, more preferably 90% by weight or more, and particularly preferably 100% by weight.
- the composition ratio of the ethylene polymer ( ⁇ ′) to the total of the ethylene polymer ( ⁇ ) and the ethylene polymer ( ⁇ ′) in the ethylene resin of the present invention is usually 50% by weight or less. It is preferably 30% by weight or less, more preferably 20% by weight or less.
- the ethylene polymer ( ⁇ ) may be used alone or in combination of two or more.
- the ethylene-based polymer (E) according to the present invention is, for example, (A) a transition metal compound in which a cyclopentagenyl group and a fluorenyl group are bonded by a covalent bridge containing a Group 14 atom;
- (B-2) an organoaluminum oxide compound
- transition metal compound (A) transition metal compounds represented by the following general formulas (1) and (2) are preferably used.
- R 10 , R U , R 12 , R 13 , R 14 , R 15 , R 16 , R 17 , R 18 , R 19 and R 2 ° are selected from a hydrogen atom, a hydrocarbon group, and a silicon-containing hydrocarbon group
- Adjacent substituents from R 7 to R 18 may be the same or different, and they may be bonded to each other to form a ring.
- A is a partially unsaturated bond and / or aromatic ring. Is a divalent hydrocarbon group having 2 to 20 carbon atoms, and forms a ring structure with Y, and A contains two or more ring structures including the ring formed with Y.
- Y is carbon or key
- M is a metal selected from Group 4 of the periodic table
- Q can be coordinated by a halogen, a hydrocarbon group, an anion ligand, or a lone pair. May be selected from the same or different combinations of neutral ligands.
- J is an integer from:! To 4. ]
- R 7 to R 1Q are hydrogen, Y is carbon, and M is A compound with Zr and j of 2 is preferably used.
- transition metal compound (A) used in the examples described later is specifically represented by the following formula (3), but the present invention is not limited to this compound.
- the transition metal compound (A) represented by the general formula (1) or (2) is, for example, WO 01/2
- organometallic compound (B-1) used as necessary in the present invention include the following organoaluminum compounds.
- R a and R b each represent a hydrocarbon group having the same or different carbon number:!
- X represents a halogen atom
- m represents 0 ⁇ m ⁇ 3, or 0 ⁇ n ⁇ 3
- p is 0 ⁇ p ⁇ 3
- It is an organoaluminum compound.
- the aluminum compound used in this example is triisobutylaluminum or triethylaluminum.
- the organoaluminum compound (B-2) used as necessary in the present invention may be a conventionally known aluminoxane or a benzene-insoluble compound as exemplified in JP-A-2-78687. It may be an organoaluminum compound.
- the organoaluminum compound used in Examples described later is a commercially available MAO / toluene solution manufactured by Nippon Alkyl Aluminum Co., Ltd.
- ionic ionic compound examples include JP-A-1-501950, JP-A-1-502036, JP-A-3-179005, JP-A-3-17925.
- ionic ionic compound examples include JP-A-1-501950, JP-A-1-502036, JP-A-3-179005, JP-A-3-17925.
- heteropoly compounds and isopoly compounds can be listed.
- Such ionized ionic compounds (B-3) are used singly or in combination of two or more.
- the carrier (C) used as necessary in the present invention is an inorganic or organic compound,
- porous oxides inorganic halides, clays, clay minerals, or ion-exchangeable layered compounds are preferred.
- the carrier preferably used in the present invention has a particle size of 1 to 300/1111, preferably 3 to 200 / im. Te, 50 specific surface area: 1000 m 2 / g, preferably in the range of 100 ⁇ 800m 2 / g, it is preferably in the range of pore volume force S0.3 ⁇ 3.0cm 3 / g.
- Such carriers can be used as needed.
- the carrier used in the examples described later has an average particle diameter of 12 ⁇ and a specific surface area of 800 m 2 / g.
- the ethylene polymer (E) can be obtained by using the above-described catalyst for olefin polymerization by copolymerizing ethylene with ethylene or olefins having 3 to 20 carbon atoms. It is done.
- (P-1) A catalyst in which a transition metal compound (A) (hereinafter simply referred to as “component (A)”) is supported on a carrier (C). And (Bl) an organometallic compound, (B-2) an organoaluminum compound, and (B-3) an ionized ionic compound. Minute (B) ”and ⁇ .) Are added to the polymerization vessel in any order.
- (P-3) A method in which component (A) and component (B) are supported on a carrier (C) and a component (B) is added to the polymerization vessel in any order.
- each component (B) may be the same or different.
- (P-4) A method in which the catalyst component having component (B) supported on carrier (C) and component (A) are added to the polymerization vessel in any order.
- (P-5) A method in which the catalyst component having component (B) supported on support (C), component (A), and component (B) are added to the polymerization vessel in any order.
- each component (B) may be the same or different.
- (P-6) A method in which a catalyst in which a component (A) and a component (B) are supported on a carrier (C) is added to a polymerization vessel and a catalyst component that has been brought into contact with the component (B) in advance is added.
- each component (B) may be the same or different.
- (P-7) A catalyst in which component (A) and component (B) are supported on a carrier (C), a catalyst component previously contacted with component (B), and component (B) in any order To add to the polymerization vessel.
- each component (B) may be the same or different.
- At least two or more of the catalyst components may be contacted in advance.
- the solid catalyst component in which the component (A) and the component (B) are supported on the carrier (C) may be prepolymerized with polyolefin.
- the prepolymerized solid catalyst component normally solid catalyst per medium components lg, Pojisai Refuinka s 0. 1 ⁇ :! OOOg, preferably 0. 3 ⁇ 500G, particularly preferred properly: Preliminary in a ratio of ⁇ 200 g It is composed and polymerized.
- an antistatic agent for the purpose of causing the polymerization to proceed smoothly, an antistatic agent, an anti-fouling agent, or the like may be used in combination or supported on a carrier.
- the polymerization is carried out by any of liquid phase polymerization methods such as solution polymerization and suspension polymerization, and gas phase polymerization methods. In particular, suspension polymerization is preferable.
- the inert hydrocarbon medium used in the liquid phase polymerization method include aliphatic hydrocarbons such as propane, butane, pentane, hexane, heptane, octane, decane, dodecane, and kerosene; cyclopentane, cyclohexane List alicyclic hydrocarbons such as hexane and methylcyclopentane; aromatic hydrocarbons such as benzene, toluene and xylene; halogenated hydrocarbons such as ethylene chloride, chlorobenzene and dichloromethane, or mixtures thereof. Force olefin can be used as a solvent.
- Component (B-1) used as necessary includes component (B-1) and a transition metal atom in component (A) (
- Mono-ratio ratio with M) [(B-1) / M] force Usually used in an amount of 0.01 to 100000, preferably 0.05 to 50000.
- Component (B-2) used as necessary includes the aluminum atom in component (B-2) and component (A
- Component (B-3) used as necessary includes component (B-3) and a transition metal atom (A) in component (A).
- M) is used in such an amount that the molar ratio [(B-3) / M] is usually:! -10, preferably 1-5.
- the polymerization temperature using such an olefin polymerization catalyst is usually in the range of 50 to + 250 ° C, preferably 0 to 200 ° C, particularly preferably 60 to 170 ° C.
- the polymerization pressure is usually from normal pressure to 100 kgZcm2, preferably from normal pressure to 50 kg / cm2, and the polymerization reaction can be carried out in any of batch-wise (batch-type), semi-continuous and continuous methods. it can. Among these, it is preferable to carry out by a batch type. Polymerization is carried out in the gas phase or in a slurry phase in which polymer particles are precipitated in the solvent. In the present invention, the polymerization is preferably carried out in two or more stages having different reaction conditions.
- the polymerization temperature is preferably 75 to 90 ° C, more preferably 80 to 85 ° C. By polymerizing in this temperature range, an ethylene polymer having a narrower composition distribution can be obtained.
- the resulting polymer is tens to thousands ⁇ m It has a particle size of about ⁇ .
- the ethylene polymer ( ⁇ ) When the ethylene polymer ( ⁇ ) is produced, for example, in two stages, the ethylene polymer having an intrinsic viscosity of 0.3 to 1.8 dlZg in the previous stage is converted to 40 to 80 wt% of the ethylene polymer ( ⁇ ). It is preferable to produce an amount in which the (co) polymer having an intrinsic viscosity of 2.0 to 8. OdlZg is 20 to 60% by weight of the ethylene polymer (E) at a later stage. . This order may be reversed.
- the ethylene-based polymer (E) can be obtained by producing an ethylene homopolymer in the previous stage and producing an ethylene'-olefin copolymer in the later stage.
- the intrinsic viscosity ([ ⁇ ]) is a value measured at 135 ° C using a decalin solvent. That is, about 20 mg of an ethylene polymer is dissolved in 15 ml of decalin, and the specific viscosity ⁇ sp is measured in an oil bath at 135 ° C. After adding 5 ml of decalin solvent to this decalin solution and diluting, measure the specific viscosity 77 in the same way. Repeat this dilution two more times and extrapolate the concentration (C) to zero.
- ⁇ / C The value of ⁇ / C is calculated as the intrinsic viscosity.
- [77] lim (77 / C) (C ⁇ 0)
- the molecular weight of the resulting ethylene polymer can be adjusted by allowing hydrogen to be present in the polymerization system or changing the polymerization temperature. Furthermore, it can be adjusted according to the difference in the component (B) used.
- the comonomer content of the ethylene-based polymer according to the present invention (E) is usually 0.5 mole 0/0 or less, preferably 0.5 01-0. 5 mole 0/0 It is in the range.
- the polymer particles obtained by the polymerization reaction may be pelletized by the following method.
- [0083] [1] A method of mechanically blending ethylene-based polymer particles and other components optionally added using an extruder, a kneader or the like, and cutting the mixture into a predetermined size.
- Ethylene-based polymer and other optional components added as appropriate good solvents (for example; hydrocarbon solvents such as hexane, heptane, decane, cyclohexane, benzene, tonylene and xylene) ) And then the solvent is removed, and then mechanically blended using an extruder, kneader, etc., and cut to a predetermined size.
- solvents for example; hydrocarbon solvents such as hexane, heptane, decane, cyclohexane, benzene, tonylene and xylene
- the ethylene-based polymer (E) thus produced usually satisfies the above requirements [a] and [b].
- the above requirements [d], [e], and [f] are satisfied, but the melt stretch breaking speed usually exceeds 90 (m / min) and the above requirement [c] is not satisfied.
- ethylene resin of the present invention by blending the ethylene polymer (E) and the olefin resin (R), preferably the ethylene polymer ( ⁇ ′), various known methods can be adopted. For example, mixing with a Henschel mixer, V-blender, ribbon blender, tumbler blender, etc., or after mixing, melt kneading with a single screw extruder, twin screw extruder, kneader, Banbury mixer, etc., and granulation Or, it can be prepared by grinding.
- the ethylene resin of the present invention includes a weather resistance stabilizer, a heat resistance stabilizer, an antistatic agent, an anti-slip agent, an anti-blocking agent, an antifogging agent, a lubricant, and a dye as long as the object of the present invention is not impaired.
- Nucleating agents, plasticizers, anti-aging agents, hydrochloric acid absorbents, antioxidants and other additives, carbon black, titanium oxide, titanium yellow, phthalocyanine, isoindolinone, quinacridone compounds, condensed azo compounds, ultramarine, cobalt blue Or the like may be blended if necessary.
- the ethylene-based resin of the present invention can be formed into a blow-molded product, an extruded product such as a pipe or a deformed product, or an injection-molded product.
- These molded products include molded products (laminates and the like) including a part made of an ethylene-based resin and a part made of another resin.
- the blow molded article of the present invention and the hollow molded article which is a preferred embodiment are obtained by molding the above-described ethylene-based resin.
- the hollow molded body according to the present invention may be formed of a single layer such as a single layer container, or may be formed of two or more layers such as a multilayer container.
- the multilayer container is formed of two layers
- one layer is formed of the above-described ethylene-based resin of the present invention
- the other layer is a resin different from the ethylene-based resin of the present invention.
- Examples of the above different resins include polyamide (nylon 6, nylon 66, nylon 12 , Copolymer nylon, etc.), ethylene 'vinyl alcohol copolymer, polyester (polyethylene terephthalate, etc.), modified polyolefin, etc.
- the polyethylene hollow molded article according to the present invention is prepared by a conventionally known hollow molding (blow molding) method.
- blow molding There are various blow molding methods, which can be broadly divided into extrusion blow molding, two-stage blow molding, and injection molding.
- the extrusion blow molding method is particularly preferably employed.
- the hollow molded body prepared as described above is suitable for uses such as fuel tanks, industrial chemical cans, bleach containers, detergent containers, bleach containers, and the like, for example, cosmetics, detergents, and soft finishes. It can be suitably used as a container for surfactants for household use used for agents, shampoos, rinses, treatments, etc. or a container for bleaching agents.
- the resin measurement method and molded body evaluation method employed in the examples of the present application are as follows.
- HLMFR and MFR Comply with JIS K7210, 190 ° C, 21 ⁇ 6kg and 2 ⁇ 16kg respectively.
- Vent method ESCR measurement method Conforms to ASTM-D-1693 2mm thickness press sheet 50 ° C, test solution nonionic surfactant 10% aqueous solution (trade name Wako Pure Chemicals; Antalox Co630).
- Measuring temperature 190. C barrel diameter 9.5mm, barrel extrusion speed 15mm / min., Nose diameter 2.10mm, nose length 8. Take the melt strand extruded from the nose at Omm and melt stretch the speed at which the strand broke The breaking speed was used. [0099] [m6] Density: JIS K6922-2, MFR meter Strand measurement sample measured after 30 minutes of boiling water annealing.
- the parison cuts smoothly after 30 shots after molding. Good parison cut performance. Out of 30 shots, 1 or more shots of the parison are fused to the parison cutter. What occurred was defined as a poor parison cut property. In addition, when the parison was extruded after parison cut, the parison diameter at the middle portion was larger than 30% of the die core diameter.
- the first polymerization tank 45 liters of hexane, 0.1 lmmol / hr of the solid catalyst component ( ⁇ ) in terms of Zr-converted atoms, 20 mmol / hr of triethylaluminum, and 5.
- Okg / hr of ethylene While continuously supplying hydrogen and continuously withdrawing the contents of the polymerization tank so that the liquid level in the polymerization tank becomes constant, the polymerization temperature is 85 ° C, the reaction pressure is 8.5 kg / cm 2 G, The polymerization was carried out under an average residence time of 2.5 hours.
- the contents continuously withdrawn from the first polymerization tank were substantially free of unreacted ethylene and hydrogen by a flash drum maintained at an internal pressure of 0.2 kg / m 2 G and 65 ° C.
- the Thereafter, the contents were continuously fed to the second polymerization tank together with hexane 35 liter / hr, ethylene 4. Okg / hr, hydrogen 0.2 N-liter / hr, 1-hexene 130 g / hr, and polymerized. Polymerization was continued under the conditions of a temperature of 80 ° C., a reaction pressure of 4.5 kg / cm 2 G, and an average residence time of 1.2 hours.
- the contents of the polymerization tank are continuously withdrawn so that the liquid level in the polymerization tank becomes constant, and hexane and unreacted monomers in the contents are removed by a solvent separator. Drying gave an ethylene polymer.
- the density of the obtained ethylene polymer was 958 (kg / m 3 ) and MFR 0.5 (g / l 0 min).
- Example 1 Manufactured by the high pressure method with MFR of 0.3 (g / 10min) and density of 921 (kg / m 3 ) with respect to 95 parts by weight of the compound (E1) obtained in Production Example 1.
- Table 1 shows the physical properties of the ethylene resin thus obtained and the moldability and physical properties of the bottles obtained from the polyethylene resin.
- Table 1 shows the physical properties of the polyethylene resin prepared by blending and the properties of the hollow molded body made of the resin.
- Table 1 shows the physical properties of the ethylene polymer blend obtained in Production Example 1 alone and the properties of the hollow molded body made of the resin.
- High-density polyethylene commercial product HB333RE (trade name, manufactured by Nippon Polyethylene Co., Ltd.) Table 1 shows the physical properties of the hollow molded body made of the resin.
- Table 1 shows the physical properties of the ethylene-based polymer blend (E2) used in Example 4 and the hollow molded body made of the resin. It can be seen that the balance between ESCR, flexural modulus, melt tension, and melt stretch breaking speed is inferior to that of the examples.
- Table 1 shows the physical properties of the ethylene-based polymer blend (E3) used in Example 4 and the hollow molded body made of the resin. It can be seen that the balance between ESCR, flexural modulus, melt tension, and melt stretch breaking speed is inferior to that of the examples.
- Table 1 shows the physical properties of Prime Polymer Co., Ltd.) and the properties of the hollow molded body with the resin power. It can be seen that the balance between ESCR, flexural modulus, melt tension, and melt stretch rupture rate is inferior to that of the examples.
- the ethylene-based resin of the present invention is excellent in rigidity and ESCR, and further in the stability and cutting property of the parison, and the bottle formed from the resin is also excellent in appearance.
- the ethylene-based resin and the hollow molded article of the present invention are detergents, shampoos, rinses, bleaches, softeners, cosmetics, waxes, edible oils, mayonnaise, kneaded wasabi, containers, fuel tanks, drug cans, drums It is preferably used in applications such as water storage tanks.
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Abstract
Description
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Priority Applications (3)
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EP07714199A EP1992649A4 (en) | 2006-02-15 | 2007-02-14 | ETHYLENE RESIN AND EXTRUSION-BLOW MOLDED ARTICLE COMPRISING THE SAME |
JP2008500529A JPWO2007094376A1 (ja) | 2006-02-15 | 2007-02-14 | エチレン系樹脂およびそれからなるブロー成形体 |
US12/223,934 US20100227098A1 (en) | 2006-02-15 | 2007-02-14 | Ethylenic Resin and Blow Molded Article Obtained Therefrom |
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Also Published As
Publication number | Publication date |
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EP1992649A1 (en) | 2008-11-19 |
EP1992649A4 (en) | 2009-04-22 |
KR20080094722A (ko) | 2008-10-23 |
CN101384627A (zh) | 2009-03-11 |
JPWO2007094376A1 (ja) | 2009-07-09 |
US20100227098A1 (en) | 2010-09-09 |
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