WO2005019283A1 - プロピレン系ランダム共重合体及びその用途 - Google Patents
プロピレン系ランダム共重合体及びその用途 Download PDFInfo
- Publication number
- WO2005019283A1 WO2005019283A1 PCT/JP2004/012331 JP2004012331W WO2005019283A1 WO 2005019283 A1 WO2005019283 A1 WO 2005019283A1 JP 2004012331 W JP2004012331 W JP 2004012331W WO 2005019283 A1 WO2005019283 A1 WO 2005019283A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- propylene
- polymerization
- random copolymer
- film
- ethylene
- Prior art date
Links
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- 238000002844 melting Methods 0.000 claims abstract description 55
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- 238000006243 chemical reaction Methods 0.000 description 7
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- XMGMFRIEKMMMSU-UHFFFAOYSA-N phenylmethylbenzene Chemical group C=1C=CC=CC=1[C]C1=CC=CC=C1 XMGMFRIEKMMMSU-UHFFFAOYSA-N 0.000 description 7
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- 238000009826 distribution Methods 0.000 description 6
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- 229910052757 nitrogen Inorganic materials 0.000 description 6
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- 229920001223 polyethylene glycol Polymers 0.000 description 6
- 125000001424 substituent group Chemical group 0.000 description 6
- VPGLGRNSAYHXPY-UHFFFAOYSA-L zirconium(2+);dichloride Chemical compound Cl[Zr]Cl VPGLGRNSAYHXPY-UHFFFAOYSA-L 0.000 description 6
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 5
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- 125000000654 isopropylidene group Chemical group C(C)(C)=* 0.000 description 5
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- PBKONEOXTCPAFI-UHFFFAOYSA-N 1,2,4-trichlorobenzene Chemical compound ClC1=CC=C(Cl)C(Cl)=C1 PBKONEOXTCPAFI-UHFFFAOYSA-N 0.000 description 3
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Classifications
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- 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
- C08F210/04—Monomers containing three or four carbon atoms
- C08F210/06—Propene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08F4/00—Polymerisation catalysts
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- 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
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
- C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
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- 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
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
- C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
- C08F4/65912—Component covered by group C08F4/64 containing a transition metal-carbon bond in combination with an organoaluminium compound
-
- 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
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
- C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
- C08F4/65916—Component covered by group C08F4/64 containing a transition metal-carbon bond supported on a carrier, e.g. silica, MgCl2, polymer
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/14—Copolymers of propene
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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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S526/00—Synthetic resins or natural rubbers -- part of the class 520 series
- Y10S526/943—Polymerization with metallocene catalysts
-
- 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
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
- Y10T428/2998—Coated including synthetic resin or polymer
Definitions
- the present invention relates to a propylene-based random copolymer and its use. Related to the molded body to be manufactured. Background art
- Polymers are used in a wide variety of applications due to their excellent physical properties.
- propylene-based random copolymers are widely used as packaging films, but low-temperature heat-sealing properties may be required in the field of packaging films.
- Japanese Patent Application Laid-Open No. 2-173015 discloses a hafnium compound having a polydentate compound in which two groups selected from an indul group, a substituted indul group and a partial hydride thereof are bonded via a lower alkylene group as a ligand.
- Propylene-based random copolymers prepared from and aluminoxane have been proposed. Although the propylene-based random copolymer disclosed in the above publication has a low melting point, it has a problem in that it has low crystallinity and a large amount of low molecular weight components and is inferior in the blocking resistance of the film.
- JP-A-9-110934 discloses a propylene-based random copolymer comprising a chiral meta-mouth compound and an aluminoxane. According to the method disclosed in this publication, a low-melting-point propylene-based random copolymer can be produced. As a result of the by-product of the polymer, there are problems that the blocking resistance of the film is reduced and the haze is reduced after the heat treatment.
- Japanese Unexamined Patent Publication No. Hei 8-504457 discloses a low melting point propyle having a small amount of xylene solubles. However, there has been a problem that the impact resistance of the film is inferior because of the propylene homopolymer. Disclosure of the invention
- the present invention relates to a propylene random copolymer in which the above-mentioned problems have been solved and a molded article obtained therefrom. More specifically, the present invention relates to a propylene random copolymer having a low melting point, a high molecular weight, and a low normal decane soluble content. The present invention relates to a copolymer such as a film obtained from the copolymer.
- the present invention relates to a molded product such as a film obtained from the propylene random copolymer ( ⁇ ) or the propylene random copolymer particles ( ⁇ ⁇ ⁇ ⁇ ′).
- the propylene-based random copolymer ( ⁇ ) of the present invention simultaneously satisfies the following characteristics [1] to [4], preferably simultaneously satisfies the characteristics of [1] to [5]. It is a propylene-based random copolymer.
- the concentration (Pa, mol%) of propylene-derived skeletal component (a) contained in the propylene-based random copolymer, and ethylene (b) and ⁇ -olefins having 4 to 20 carbon atoms (The skeleton concentration (Px, mol%) derived from one or more types of olefins selected from c) satisfies the following relational expressions (Eq-1) to (Eq-S).
- a preferred embodiment of the propylene random copolymer (Z) of the present invention is a propylene random copolymer satisfying the following requirement [5] in addition to the requirements [1] to [4].
- Tm melting point
- the propylene-based random copolymer particles ( ⁇ ′) of the present invention are one form of the propylene-based copolymer, and inscribe the first skin layer [Ll] and the first skin layer present in the outermost shell.
- Propylene polymer particles characterized in that no staining components with a particle diameter of 3 ⁇ or more are observed in transmission electron microscope (TEM) photographs (magnification: ⁇ 4000) of thin sections.
- the first skin layer [L1] is polyethylene
- the second skin layer [L2] has a melting point (Tm) measured by DSC of 130 ° C. or higher.
- Tm melting point measured by DSC of 130 ° C. or higher.
- Propylene polymer particles whose core part [L3] is propylene homopolymer or a copolymer obtained from propylene and one or more olefins selected from ethylene and olefins having 4 or more carbon atoms. ( ⁇ ").
- the intrinsic viscosity [ ⁇ ] of the polyethylene in the first skin layer is 3 (g / dl) or more, and the density is 910 (kg / m 3 ) or more.
- the propylene-based random copolymer particles ( ⁇ ′′) or ( ⁇ ′) are sequentially subjected to the following three steps [Pl], [ ⁇ -2] and [ ⁇ -3] in the presence of a meta-mouth catalyst. It is obtained by implementing.
- Step [P-l] Step of producing a prepolymer [Pi] by polymerizing ethylene.
- Step [P-2] Propylene is polymerized in a quantity of 50 to 20,000 g / g-cat in the presence of the above prepolymer [Pi] at a temperature of 5 to 40 ° C. to obtain a prepolymer [ P 2 ].
- Step [P-3] Propylene homopolymerization in the presence of the prepolymer [P 2 ], or copolymerization of propylene and one or more olefins selected from ethylene and ⁇ -olefins having 4 or more carbon atoms. Producing a propylene-based polymer [ ⁇ 3 ].
- the prepolymer [Pi] produced in the above step [P-1] is preferably washed with an aliphatic or alicyclic hydrocarbon having 5 to 12 carbon atoms.
- At least one step selected from [Pl], step [P-2] and step [P-3] may be performed in the presence of a polyoxyalkylene compound represented by the following general formula [I]. It is good.
- Ri, R2 and R3 are selected from a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, and an acyl group having 1 to 20 carbon atoms.
- k represents the average number of repeating units and ranges from 1 to 100.
- a tubular reactor is preferably employed.
- the meta-acene catalyst used in the processes [P-1], [P-2] and [P-3] according to the present invention contains, as an essential component, a meta-acene compound represented by the following general formula [II]. It is preferably a meta-mouth catalyst. '
- Ris and Ri4 are selected from hydrogen, hydrocarbon groups, and silicon-containing groups. It may be different.
- M is a Group 4 transition metal
- Y is a carbon atom or a silicon atom
- Q is the same or different from a halogen, a hydrocarbon group, an ayon ligand or a neutral ligand capable of coordinating with a lone pair of electrons. Different combinations may be chosen, where j is an integer from 1 to 4. ]
- the present invention relates to a molded article, particularly a sealant film, a shrink film, or a shrink label obtained from the propylene-based random copolymer.
- FIG. 1 shows that the propylene random copolymers obtained in Examples 3 to 5 of the present invention and Comparative Examples 4 to 5 show Px (ethylene (b) and ethylene (b) contained in the propylene random copolymer).
- FIG. 4 is a diagram plotting the relationship between melting point (Tm) and a skeleton concentration derived from one or more types of a-olefins selected from a-olefins (c) having 4 to 20 carbon atoms.
- FIG. 2 is a transmission electron microscope (TEM) photograph of the core [L3] of the propylene-based random copolymer particles (Comparative Example 3) obtained using an existing Ziegler's Natta catalyst.
- TEM transmission electron microscope
- FIG. 3 is a transmission electron microscope (TEM) photograph of the propylene-based random copolymer particles (Comparative Example 3) near the first skin layer [L1] obtained using the existing Ziegler's Natta catalyst. .
- TEM transmission electron microscope
- FIG. 4 is a transmission electron microscope (TEM) photograph of the core [L3] of the propylene-based random copolymer particles obtained in Example 6.
- FIG. 5 is a transmission electron microscope (TEM) photograph of the vicinity of the first skin layer [L1] of the propylene-based random copolymer particles obtained in Example 6.
- TEM transmission electron microscope
- the propylene random copolymer (Z) of the invention is a propylene random copolymer that satisfies the following requirements [1] to [4] simultaneously.
- the concentration (Pa, mol%) of the skeleton component (a) derived from propylene contained in the propylene-based random copolymer, and ethylene (b) and ⁇ -olefin having 4 to 20 carbon atoms (The skeleton concentration (Px. mol%) derived from at least one orefin selected from c) satisfies the following relational expressions (Eq- :!) to (Eq- 3 ), preferably the following relational expression (Eq- ) To (Eq-3 ′), and particularly preferably the following relational expressions (Eq-1 ′′) to (Eq-3 ′′).
- Examples of the olefin (c) having 4 to 20 carbon atoms used in the present invention include 1-butene, 1-pentene, 3-methyl-1-butene, 1-hexene, 4-methyl-1-pentene, and 3-methyl Examples thereof include 1-pentane, 1-otaten, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene, 1-octadecene, and 1-eicosene. Among these, at least one selected from 1-butene, 1-hexene, and 4-methyl-1-pentene is preferable.
- the total amount of hetero bonds due to 2,1-insertion 1,3-insertion is .0.2 mol% or less, preferably 0.1 mol% or less, More preferably, the content is 0.08 mol% or less.
- the amount of heterogeneous bonds exceeds 0.2 mol%, the amount of low crystalline components in the propylene random copolymer increases.
- propylene usually forms 1,2-insertion (the methylene side is bonded to the catalyst) to form a head-to-tail propylene chain, but rarely 2,1-insertion or 1,3-insertion Sometimes. 2,1-Incorporated and 1,3-incorporated propylene form regiorandom units in the polymer.
- 2,1-insertion concentration of your Yopi 1,3 ⁇ propylene in the polymer constituent units can utilize the 13 C-NMR spectrum, Polymer, 30, l 35 0 (l 9 8 9) Ya Japanese It can be easily calculated with reference to the information disclosed in Kaihei 7-145212.
- the content of n-decane (nCio) soluble components in the propylene random copolymer of the present invention is 2.0 wt% or less, preferably 1.0 wt% or less, more preferably 0.5 wt% or less.
- the amount of n-decane-soluble part is an index closely related to the blocking characteristic of the propylene random copolymer or the resulting force, and usually, the fact that the amount of n-decane-soluble part is small means low crystallinity. It means that the component amount is small.
- the propylene random copolymer of the present invention has very good blocking resistance.
- the low-crystalline component in the propylene-based random copolymer of the present invention is small.
- the amount of eluted components at 0 ° -dichlorobenzene (ODCB) 40 ° C or less by cross-chromatographic separation measurement (CFC) is 2.0% by weight or less, preferably 1.0% by weight or less, more preferably 0.5% by weight or less. It is. If the amount of eluted components below ODCB 40 ° C exceeds 2.0 wt%, the low crystalline components in the propylene-based random copolymer will increase, and In many cases, there are problems such as a licking property and a decrease in transparency of the film after the heat treatment.
- the propylene random copolymer (Z) of the present invention preferably satisfies the following requirement [5] in addition to the requirements [1] to [4].
- the propylene random copolymer (Z) of the present invention has a melting point (Tm) determined by DSC of 140 ° C or less, preferably 95 to 140 ° C, more preferably 100 to 130 ° C. Particularly preferably, it is 100 to 120 ° C. If the melting point exceeds 140 ° C., the propylene-based random copolymer (Z) is not preferable because it may cause an increase in heat sealing temperature when applied to a molded article such as a film.
- Tm melting point
- the melt flow rate (MFR) of the propylene random copolymer (Z) of the present invention at 230 ° C and a load of 2.16 kg is determined by the propylene random copolymer (ZR) showing the optimum MFR depending on the application. ) Can be used without restriction. Generally speaking, if the MFR is 30 (g / 10 min) or less, it is preferable because it can be used for various molding purposes without any problem. More specifically, it is desirable that the MFR is 40 (g / 10min) or less for injection molding applications, and the MFR is 20 (g / 10min) or less for film applications. For applications, it is desirable that the MFR be 2 (g / 10min) or less.
- the copolymer (Z) is used particularly for a sealant film.
- a film whose Mw / Mn is usually 1.0 to 4.0, preferably 1.0 to 3.0 is preferably used.Films that do not require transparency In the field of molded products other than films and films, polymers having Mw / Mn exceeding 4.0 are also preferably used.
- the propylene-based random copolymer particles ( ⁇ ,) of the present invention are one form of the propylene-based copolymer ( ⁇ ), and are the first outer skin layer [L1] and the first outer skin layer present in the outermost shell.
- the propylene-based random copolymer particles are characterized in that no stain component having a particle diameter of 3 / ⁇ or more is observed in transmission electron microscope (TEM) photographs (magnification: ⁇ 4000) of ultrathin sections after staining.
- FIG. 4 and FIG. 5 attached as an example to the specification of the present application show that the layered structure of the propylene-based random copolymer particles ( ⁇ ,) and the homogeneity of the core [L3] of the present invention. It is easily understood.
- the first skin layer [L1] is polyethylene
- the second skin layer [L2] has a melting point (Tm) measured by DSC of 130 ° C. or higher.
- Tm melting point measured by DSC of 130 ° C. or higher.
- Propylene-based polymer whose core [L3] is propylene homopolymer or a copolymer obtained from propylene and one or more olefins selected from ethylene and olefins having 4 or more carbon atoms.
- the intrinsic viscosity [7j] of the polyethylene in the first skin layer is 3 (g / dl) or more, and the density is 910 (kg / m 3 ) or more.
- the propylene-based polymer particles ( ⁇ ′′ :) to ( ⁇ ′) of the present invention have a three-layer structure of a first skin layer [Ll], a second skin layer [L2] and a core part [L3] described below. Propylene polymer particles.
- the first skin layer [Ll]; the intrinsic viscosity [] of the polyethylene constituting the first skin layer [Ll] is preferably 3 (g / dl) or more, more preferably 5 (dl / g) or more. .
- the entanglement of the polyethylene molecular chains is strengthened, and destruction of particles during prepolymerization (and during main polymerization) is prevented.
- polyethylene is most suitable in view of the particle form.
- the density is preferably in a high density region, but may be in a low density region such as an ethylene copolymer.
- This first skin layer [L1] is formed in a step [P-1] described later.
- Second skin layer [L2]; intrinsic viscosity of polypropylene constituting the second skin layer [L2] inscribed in the first skin layer [7]] is 0.5 to 5 (g / dl), preferably 1 to 5. ⁇ 3.0 (g / dl) In range.
- the intrinsic viscosity [77] is larger than 5 (g / dl)
- the state becomes almost hydrogen-free at the time of polymerization in the step [P-2] described later, and the morphology of the particles deteriorates. Further, when it is less than 0.5 (g / dl), heat generation of the particles is large and fine powder is easily generated.
- the melting point Tm of the second skin layer [L2] measured by DSC is 130 ° C or higher, preferably 145 ° C or higher. If it is less than 130, the stereoregularity is low, the polymer is easily dissolved in the polymerization solvent, and blocking of the polymer particles tends to occur. In addition, when an attempt is made to obtain a polymer having a Tm of less than 130 ° C by copolymerization of ⁇ -olefins such as ethylene, a meta-mouth compound is generally easily released from the catalyst, and as a result, fouling increases. There is an adverse effect on the manufacturing side.
- This second skin layer [L2] is formed in a step [P-2] described later.
- Core [L3] The component constituting the core [L3], which is the innermost layer, is propylene homopolymer or propylene, and one or more kinds selected from ethylene and ⁇ -olefin having 4 or more carbon atoms. It is a copolymer obtained from Olefin.
- the core part [L3] is a layer that is formed in a step [III-3] described later and forms a main part of the propylene-based random copolymer of the present invention.
- the present invention also provides a method for producing a propylene-based polymer, characterized by sequentially performing the following three steps [Pl], [P-2] and [ ⁇ -3] in the presence of a meta-open catalyst. Includes.
- propylene-based polymer not only the above-mentioned propylene-based random copolymer particles ( ⁇ ′′) to ( ⁇ ′) but also a propylene-based polymer containing a propylene-derived skeleton as a main component can be produced.
- the production method of the present invention will be described in detail by taking the production of the above-mentioned propylene-based random copolymer particles ( ⁇ ′′) to ( ⁇ ′′ ′) as an example.
- Step [P-1] is a step of producing a prepolymer [Pi] by polymerizing ethylene.
- the amount of ethylene polymerization per unit weight of the catalyst does not always have an optimum range from the viewpoint of the performance of the propylene-based random copolymer (for example, the characteristics of a film).
- the amount of ethylene polymerization per unit weight of the catalyst is usually 1 to 50 g / g-cat, preferably 1 to 20 g / g-cat, and more preferably 1 to 10 g / g-cat. If the polymerization amount is 50 g / g-cat or more, a long reaction time is required, which is not preferable from the viewpoint of productivity.
- the polymerization to be performed may be referred to as “prepolymerization”
- the polymer [Pi] obtained by this prepolymerization may be referred to as “prepolymer”.
- step [P-2] propylene is polymerized at a temperature of 5 to 40 ° C in the presence of the prepolymer [Pi] in an amount of 50 to 20,000 g / g-cat to preload.
- This is the step of producing the united [P 2 ].
- a tubular reactor is usually preferably used, but the present invention is not limited to a tubular reactor as long as the above conditions to be included in the step [P-2] are satisfied.
- a tubular reactor is a tubular reactor consisting of a cylindrical channel immersed in a temperature control medium, the reactants are supplied from one end of the tubular reactor, polymerized inside the tubular reactor, and polymerized. Is taken out from the other end of the tubular reactor.
- tubular reactors In tubular reactors, the need for good heat exchange between the temperature control medium and the reactants requires that the cylindrical channel be narrow, typically 1 cm to: 15 cm in diameter. It is. In addition, the flow rates are balanced to prevent clogging, and sufficient heat exchange is provided for polymerization.
- Such a tubular reactor is preferably employed for producing the propylene-based random copolymer of the present invention, but it has no stagnant portion, prevents fouling by the stagnant portion, and enables mild polymerization at a low temperature.
- other reactors other than the tubular reactor can be used as described above.
- the amount of the prepolymerized polypropylene is usually 50 to 20,000 g / g-cat, but preferably 100 to 500 g / g-cat. At 50 g / g-cat or more, particle destruction at the time of main polymerization can be prevented for the first time, and when the polymerization amount is less than this, particles are easily broken. Those with more than 20,000 g / g-cat are not preferable in terms of equipment. (In the following description, E as "pre-polymerization" the polymerization is carried out in [P-2], the polymer obtained in this prepolymerization case the [P 2] may be referred to as "prepolymerization coalescence".)
- step [P-3] in the presence of the prepolymer [P2], 1) propylene homopolymerization, or 2) propylene and at least one selected from ethylene and ⁇ -olefin having 4 or more carbon atoms propylene copolymer of Orefin copolymerizing [[rho 3] is a step of manufacturing the.
- the polymerization amount per unit weight of the catalyst is preferably 3,000 to 50,000 (g / g-cat).
- main polymerization the polymerization performed in step [P-3] may be referred to as “main polymerization”
- the polymer obtained in this main polymerization [P 3 ] may be referred to as “main polymer”. is there. )
- Step [P-3] may be performed by sequentially performing two or more polymerizations with different polymerization conditions.
- One example of such a polymerization method is a method in which propylene is homopolymerized in one polymerization layer and propylene is copolymerized in another polymerization layer. (In the following description, this polymerization may be referred to as “step polymerization”.)
- step polymerization for obtaining a random copolymer suitably used for a film is specifically described below.
- step [P-3] is divided into two steps under different polymerization conditions, and step [P-3a], that is, homopolymerization of propylene is performed in the first reactor, and then in series.
- step [P-3b] that is, copolymerization of propylene with one or more olefins selected from ethylene and ⁇ -olefins having 4 or more carbon atoms is performed.
- the propylene-based random copolymer particles obtained by this step polymerization have [i] a GPC molecular weight distribution of 4.0 or less, and [ii] a melting point peak (Tm) measured by DSC of 130 ° C or more, preferably 135 ° C or more.
- Tm melting point peak
- a transmission electron microscope that exists at least one each on the high temperature side of C or higher and on the low temperature side of 125 ° C or lower, preferably 120 ° C or lower, and [iii] 4000 times magnification of ultrathin sections after metal oxide staining
- TEM TEM
- the propylene-based random copolymer particles of the present invention include (X) a propylene homopolymer obtained in the presence of a methacrylate catalyst, and ( ⁇ ) a copolymer obtained from propylene and ethylene in the presence of a methacrylate catalyst, ( ⁇ ) A copolymer obtained from propylene and a olefin having 4 or more carbon atoms in the presence of a meta-mouth catalyst (W) It can be said that it is a polypropylene copolymer in which at least one copolymer selected from copolymers obtained from propylene, ethylene, and ⁇ -olefin having 4 or more carbon atoms is uniformly dispersed.
- the prepolymer [Pi] produced in the step [P-1] is an aliphatic hydrocarbon having 5 to 12 carbon atoms or an alicyclic hydrocarbon compound having 5 to 12 carbon atoms (L2). Sol).
- Aliphatic hydrocarbons having 5 to 12 carbon atoms include n-pentane, 2-methylbutane, n-hexane, 2,3-dimethylbutane, 2-methylpentane, 3-methylpentane, n-heptane, 2 , 3-dimethylpentane, n-octane, n-nonane, n-decane and n-pentane.
- alicyclic hydrocarbons having 5 to 12 carbon atoms include cyclopentane, cyclohexane, methylcyclohexane, 1,2-dimethylcyclohexane, 1,3-dimethylcyclohexane, and isopropynolecyclo. Examples thereof include hexane, propylcyclohexane, and butylcyclohexane. Among them, n-heptane, n-hexane or a mixed solvent thereof is preferably used in terms of availability, ease of washing operation, and ease of recovery after use.
- the washing method and washing conditions are not particularly limited as long as 95% by weight or more of the eliminated meta-mouthen compound in the prepolymer [Pi] can be washed and removed.
- the above-mentioned hydrocarbon solvent (Sol) is added so that it becomes 1 (g / L-Sol) with respect to the prepolymer [Pi], and the mixture is stirred at normal pressure and 30 ° C or less for 15 minutes, and then stirred. This is performed by a method of removing a supernatant.
- 95% by weight or more of the eliminated meta-acene compound in the prepolymer [Pi] is washed away.
- the prepolymer [Pi] may be prepared by performing the step [P-1] in the presence of the hydrocarbon solvent (Sol).
- step [Pl], step [P-2] and step [P-3] is a polyoxyalkylene-based compound represented by the following general formula [I].
- the reaction is performed in the presence of a compound.
- RR 2 and R 3 are selected from a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, and an acyl group having 1 to 20 carbon atoms.
- k represents the average number of repeating units and ranges from 1 to 100.
- polyoxyalkylene compound specifically, polyoxyethylene lauryl ether Ter, polyoxyethylene oleyl ether, polyoxyalkylene lauryl ether, polyoxyethylene isodecyl ether, polyoxyethylene alkyl ether, polyoxyalkylene alkyl ether, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, Polyoxyethylene styrenated phenyl ether Polyoxyethylene oleate ester, polyoxyethylene distearate ester, polyoxyalkylene glycol, repeatedlybitan sesquioleate, sorbitan monooleate, sorbitan monostearate, sorbitan monolaurate , Polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan monooleate, polyoxy Ethylene lanolin alcohol ether, polyoxyethylene lanolin fatty acid ester, polyoxyethylene alkylamine ether, polyethylene glycol anolekyl ether,
- Nonionic surfactants can be used alone or in combination of two or more.
- Ri and R 2 are both hydrogen atoms, or at least one of R 1 and R 2 is an aliphatic acyl group having 12 to 18 carbon atoms, and R 3 is
- the use of a polyoxyalkylene compound, which is a hydrogen atom or a methyl group has a higher anti-fouling effect.
- the use of a compound in which at least one of R 1 and R 2 is an acyl group is limited when the environmental atmosphere during polymerization is alkaline.
- the polyoxyalkylene glycol represented by the following general formula is particularly preferably used because it exhibits an excellent antifouling effect.
- the polyoxyalkylene-based compound is added in at least one step selected from the step [Pl], the step [P-2] and the step [P-3]. -2I and step [P-3] are added in both steps.
- the amount of the polyoxyalkylene compound to be added is determined by the amount of the metallocene catalyst (as described below, the “metallocene catalyst” is usually composed of a carrier component such as silica, a cocatalyst component such as methylaluminoxane, and a metallocene compound. ;) Is from 3 to 300 wt%, preferably from 5 to 100 wt%, more preferably from 1 to 50 wt%.
- the addition form is usually diluted in a hydrocarbon solvent and added all at once, intermittently or continuously by pressure charging through a flow meter. It is also possible to feed the pump without dilution.
- the meta-acene catalyst used in the steps [P-1], [P-2] and [P-3] according to the present invention comprises: (A) a meta-acene compound; and (B) an organometallic compound. And at least one or more compounds selected from conjugates capable of forming an ion pair by reacting with an organoaluminoxy compound and a meta-acene compound, and, if necessary, a particulate carrier.
- a meta-mouth catalyst preferably a meta-mouth catalyst capable of performing stereoregular polymerization such as an isotactic or syndiotactic structure.
- a cross-linkable meta-opencen compound represented by the following general formula [II] which has already been published (WO 01/27124) by an international application by the present applicant, is preferably used.
- R12, R1S, and R14 are selected from hydrogen, a hydrocarbon group, and a silicon-containing group, and may be the same or different.
- Such hydrocarbon groups include methyl, ethyl, n-propyl, aryl (allyl), n-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl Linear hydrocarbon groups such as tert-butyl, n-nonyl and n-decanyl; isopropyl, tert-butyl, amyl, 3-methylpentyl, 1,1-methylpropyl, 1,1- Dimethylbutyl group, 1-methyl-1-propylbutyl group, 1,1-propylpyrubutyl group, 1,1-dimethyl-2-methylpropyl group, 1-methyl-1-isopropyl-2-methylpropylpyruyl group, etc.
- Cyclic hydrocarbon groups such as cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, norbornyl group and adamantyl group; phenyl group, tolyl group, naphthyl group and biphenyl group , Phenanthryl group, anthracenyl group, etc.
- Cyclic unsaturated hydrocarbon groups benzyl group, Tamyl group, 1,1-diphenylethyl group, triphenylmethyl group and other substituted cyclic hydrocarbon groups; saturated methoxy groups, ethoxy groups, phenoxy groups And a furyl group, an N-methylamino group, a ⁇ , ⁇ -dimethylamino group, a ⁇ -phenylamino group, a pyrinole group and a phenyl group, and the like.
- Examples of the silicon-containing group include a trimethylsilyl group, a triethylsilyl group, a dimethylphenylsilyl group, a diphenylmethylsilyl group, and a triphenylsilyl group. Adjacent substituents of R 5 to Ri 2 may be bonded to each other to form a ring.
- Examples of such a substituted fluorenyl group include a benzofluorenyl group, a dibenzophenyloleenyl group, an octahydrodibenzofluorenyl group, an otamethylmethyloctahydrodibenzofluorenyl group, and an otamethyltetrahydrodicyclopentafluorenyl group.
- a benzofluorenyl group a dibenzophenyloleenyl group
- an octahydrodibenzofluorenyl group an otamethylmethyloctahydrodibenzofluorenyl group
- an otamethyltetrahydrodicyclopentafluorenyl group otetrahydrodicyclopentafluorenyl group.
- Ri, R 2 , R 3 , and R 4 substituted on the cyclopentagenenyl ring are preferably hydrogen or a hydrocarbon group having 1 to 20 carbon atoms, and R 1 and R 3 are hydrogen.
- R 2 and R 4 are more 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.
- R 2 is more preferably a bulky substituent such as a tert-butyl group, an adamantyl group and a triphenylmethyl group
- R 4 is a methyl group, an ethyl group, and an n-propyl group. More preferably, it is a substituent sterically smaller than R 2 , such as a phenyl group.
- the term "sterically small" as used herein means that the volume occupied by the substituent is small.
- R 5 to R 12 substituted on the fluorene ring are preferably hydrogen or a hydrocarbon group 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 R12 may be bonded to each other to form a ring.
- Y bridging the cyclopentagenenyl ring and the fluorenyl ring is a carbon atom or a silicon atom, and is preferably a carbon atom.
- R 13 and R 14 substituted for Y 1 are preferably a hydrocarbon group having 1 to 20 carbon atoms. These may be the same as or different from each other, or 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 alkyl group having 1 to 5 carbon atoms or an aryl group having 6 to 20 carbon atoms. And may be the same or different, and may be bonded to each other to form a ring. As such a substituent, a fluorenylidene group, a 10-hydroanthracedylidene group, a dibenzocyclohepta-gedylidene group and the like are preferable.
- M is a Group 4 transition metal, preferably, Ti, Zr, Hf and the like.
- Q is selected from the same or a different combination from a halogen, a hydrocarbon group, an anion ligand, or a neutral ligand capable of coordinating with a lone electron pair.
- j is an integer of 1 to 4, and when j is 2 or more, Qs may be the same or different.
- Specific examples of the halogen include fluorine, chlorine, bromine, and iodine
- specific examples of the hydrocarbon group include the same as those described above.
- anion ligand examples include an alkoxy group such as methoxy, tert-butoxy and phenoxy, a carboxylate group such as isopropyl acetate and benzoate, and a sulfonate group such as mesylate and tosylate.
- neutral ligand capable of coordinating with a lone electron pair include organic phosphorus compounds such as trimethylphosphine, triethylphosphine, triphenylphosphine, diphenylmethylphosphine, tetrahydrofuran, getyl ether, dioxane, 1,2 -Ethers such as dimethoxyethane.
- At least one of Q is a halogen or an alkyl group.
- bridged meta-mouth compounds include isopropylidene (3-tert-butyl-5-methyl-cyclopentagenenyl) (fluorenyl) zirconium dichloride and isopropylidene (3-tert-butyl-5-methyl-cyclopentane).
- B an organometallic compound (Bl), an organoaluminoxy compound (B-2), and a compound capable of forming an ion pair by reacting with a metallocene compound (B-3), At least one compound, and optionally,
- organometallic compound (B-1) used in the present invention specifically, the following organometallic compounds of the first, second and twelfth and thirteenth groups are used.
- Rb may be the same or different from each other, and have 1 to 15, preferably 1-4 hydrocarbon groups
- X represents a halogen atom
- m is 0 ⁇ m ⁇ 3
- n is 0 ⁇ n ⁇ 3
- q is 0 ⁇ q ⁇ 3
- m + n + p + q 3
- Specific examples of such compounds include trimethylaluminum, triethylaluminum, triisobutylaluminum, and diisobutylaluminum hydride.
- M 2 represents a Li, Na or K
- R a is a carbon number 1 to 15, preferably a 1-4 hydrocarbon group
- complex of Group 1 metal and aluminum represented by Alkyl compounds examples include LiAl (C 2 H 5 ) 4 and LiAl (C 7 Hi 5 ) 4 .
- Ra and Rb may be the same or different from each other
- M3 is Mg, Zn or Cd).
- organometallic compounds (B-1) organoaluminum compounds are preferred. Further, such an organometallic compound (B-1) may be used alone or in combination of two or more.
- the organoaluminoxy compound (B-2) used in the present invention may be a conventionally known aluminoxane, or a benzene-insoluble organoaluminoxoxy compound as exemplified in JP-A-2-78687. It may be.
- aluminoxanes are prepared by adding an organic aluminum compound such as trialkylaluminum to a hydrocarbon medium suspension of a compound containing water of adsorption or a salt containing water of crystallization, and adding the water or water of crystallization to the suspension.
- an organic aluminum compound such as trialkylaluminum
- a hydrocarbon medium suspension of a compound containing water of adsorption or a salt containing water of crystallization and adding the water or water of crystallization to the suspension.
- Manufactured by a method of reacting with an organoaluminum compound or a method of directly acting water, ice or steam on an organoaluminum compound such as trialkylaluminum in a medium such as benzene, toluene, getyl ether, or tetrahydrofuran. .
- organoaluminum compound used in preparing the aluminoxane examples include those exemplified as the organoaluminum compound belonging to (B-la). The same organoaluminum compound can be mentioned. Of these, trialkylaluminum and tricycloalkylaluminum are preferred, and trimethylaluminum is particularly preferred.
- the above-mentioned organoaluminum compounds are used alone or in combination of two or more.
- the aluminoxane prepared from trimethylaluminum is referred to as methylaluminoxane or MAO, and is a particularly preferably used compound.
- organoaluminoxy compounds (B-2) are used alone or in combination of two or more.
- (B-3) A compound capable of forming an ion ⁇ ⁇ by reacting with a meta-mouth compound, a compound capable of forming an ion pair by reacting with the meta-mouth compound used in the present invention (B-3) ( Hereinafter, referred to as “ionized ionic compound.”
- ionized ionic compound are described in JP-A-1-501950, JP-A-1-502036, JP-A-3-179005, JP-A-3-179006, and JP-A-3-179006.
- heteropoly compounds and isopoly compounds can also be mentioned.
- Such ionized ionic compounds (B-3) are used alone or in combination of two or more.
- the particulate carrier (C) used as required in the present invention is an inorganic or organic compound, and is a granular or particulate solid.
- porous oxides which are preferably porous oxides, inorganic chlorides, clays, clay minerals or ion-exchange layered compounds, are particularly preferred.
- porous oxide specifically using the Si0 2, A1 2 0 3, MgO, Zr0 2, Ti0 2, B 2 0 3 CaO, ZnO, BaO, etc. ThO z, or composites or mixtures containing them Can be used. Of these, Shi also of the preferred mainly of Si_ ⁇ 2 and / or A1 2 0 3 les.
- the carrier preferably used in the present invention has a particle size of 5 to 300 mm, more preferably 10 to: 100 ⁇ , and a The surface area is preferably from 50 to: I000 m 2 / g, more preferably from 200 to 900 m 2 / g, and the pore volume is preferably from 0.3 to 3.0 cm 3 / g. Good.
- a carrier is used by calcining at 100 to 1000 ° C, preferably 150 to 700 ° C, if necessary.
- a post-treatment step such as a known catalyst deactivation treatment step, catalyst residue removal step, and drying step is performed.
- a propylene-based random copolymer is obtained as a powder (particle).
- Various additives such as synthetic resins can be blended as necessary, melt-kneaded, and further pelletized into pellets, which can be used for the production of various molded products.
- a usual kneading apparatus such as a Henschel mixer, a repump blender, and a bumper mixer can be used. Melt kneading and pelletizing are carried out using a usual single screw extruder or twin screw extruder, Brabender or roll at 170 to 300 ° C, preferably 190 to 250 ° C, and pelletized.
- the obtained propylene-based random copolymer composition is subjected to various molding methods such as an injection molding method, an extrusion molding method, an injection-stretching pro-molding method, and a blow molding method to form a desired molded product such as a film, a sheet, or the like. It can be processed into OPP sealants, professional molded products, injection stretch blow molded products, and injection molded products.
- the propylene-based random copolymer of the present invention has good blocking resistance even at a low melting point, and thus can be suitably used for sealants.
- the propylene random copolymer of the present invention can be biaxially stretched at a low temperature and has a large heat shrinkage. Therefore, it can be suitably used for shrink film applications. Further, since it has a low melting point and a high molecular weight, it is possible to manufacture an injection molded article having high transparency and high impact resistance.
- a sealant film, a shrinkable film which is a molded product obtained from the propylene random copolymer of the present invention.
- the link film (and shrink label) and the metallized film are described in detail.
- propylene-based resins have a relatively high melting point.
- propylene is copolymerized with ethylene or a-olefin having 4 to 10 carbon atoms to improve heat sealability at low temperatures.
- 'It was usually used as an ⁇ -olebuin copolymer.
- the packaging film made of a conventionally known propylene olefin copolymer has excellent transparency as compared with films made of high and low density polyethylene, but has insufficient heat sealability at low temperatures. There was a problem.
- the sealant film using the propylene-based random copolymer of the present invention as a raw material provides an excellent sealant film in which the above-mentioned problems have been solved.
- the first sealant film is the propylene-based random copolymer of the present invention, and has a melting peak (that is, melting point Tm) determined by DSC of 130 ° C. or higher and 125 ° C., respectively.
- Such a propylene-based random copolymer having a plurality of melting points may be produced by performing step polymerization in the step [P-3] as described above, or a propylene-based random copolymer having a different melting point. It may be manufactured by blending polymers.
- a preferred blending form is a propylene-based random copolymer (A) having a melting point (Tm) of 130 ° C or more determined by DSC of 5 to 80 ° C.
- the melting point (Tm) determined by DSC is 125 parts by weight.
- This is a method in which a polypropylene composition comprising 20 to 95 parts by weight of a propylene random copolymer (B) of not more than C is melt-kneaded using a twin-screw extruder or the like.
- the film By forming a film from the propylene-based random copolymer having a plurality of melting points, impact resistance and high heat seal strength (specifically, 2. ON / 15mm or more) and high-speed film forming of packaging materials that require low-temperature heat sealability.
- the film may be formed by a cast molding method or an inflation molding method, and a film having a uniform thickness can be produced usually at a resin temperature of 180 to 240 ° C.
- the thickness of the film is usually in the range of 1 to 100 ⁇ , preferably 3 to 80 / zm.
- the film thus obtained has good low-temperature impact resistance, high heat seal strength, and low-temperature heat sealability. It is suitably used as a sealant film for packaging materials for semi-retort.
- the second sealant film which is the propylene-based random copolymer of the present invention, has a melting point (Tm) determined by DSC that satisfies a specific range of 120 ° C. or less.
- Tm melting point
- the film may be formed by a cast molding method or an inflation molding method, and a film having a uniform thickness can be produced usually at a resin temperature of 180 to 240 ° C.
- the thickness of the film is usually in the range of 1 to 100 m, preferably in the range of 3 to 80 ⁇ .
- the second sealant film has an AHAZE (change rate of HAZE after 7 days at 80 ° C) of 2% or less, preferably 1.5% or less, and a heat seal strength of 5N / 15mm or more, preferably 6.5N / 15mm or more. It has the characteristic that there is. If ⁇ exceeds 2%, the appearance is impaired, and the blocking resistance is lowered, which limits its use in applications such as food packaging and industrial films, and is not preferred. If the heat seal strength is less than 5 N / 15 mm, This is preferable because the sealing portion of the packaging portion does not exhibit sufficient sealing properties to withstand high-speed packaging. As described above, the second sealant film has excellent low-temperature impact resistance, high heat-sealing strength and low-temperature heat-sealing properties, and is characterized by a small change in HAZE with time.
- AHAZE change rate of HAZE after 7 days at 80 ° C
- the first sealant film and the second sealant film can be used alone or independently, but are generally used as a packaging film or a packaging sheet in the form of a laminate laminated on a substrate.
- the substrate is not particularly limited, but may be a polyolefin film such as polyethylene or polypropylene, or a substrate.
- Tylene resin film polyester film such as polyethylene terephthalate or polybutylene terephthalate, polyamide film such as nylon 6, nylon 6, 6, or a stretched film thereof, polyolefin film and polyamide film, ethylene
- This substrate can be used in combination of two or more types, not only: I type.
- the film layer is preferably located on at least one outermost layer of the laminate and forms a sealant layer.
- the resin composition of the present invention is directly extruded on a base material, a base material and a sealant film are dry-laminated, or a resin constituting both layers is used. A coextrusion method can be employed.
- the structure of the sealant film layer (X) / polyolefin film layer (Y1) / other film layer (Y2) can be mentioned.
- the other film layer is selected from the group consisting of a polystyrene film, a polyester film, a polyamide film, a laminated film of a polyolefin film and a gas-barrier resin film, an aluminum foil, a vapor-deposited film, and paper. Layers can be mentioned.
- the structure of the sealant film layer / polyolefin film layer / adhesive layer / other film layer can be used.
- an anchor coat agent such as a urethane-based or isocyanate-based adhesive
- a modified polyolefin such as an unsaturated carboxylic acid-grafted polyolefin is used as the adhesive resin
- the adjacent layer is strengthened. Can be joined.
- the film layers of the laminate are faced to each other, or the film layer of the laminate is faced to another film, and then at least a part of the periphery thereof is heat-sealed from the outer surface side into a desired container shape.
- a container can be manufactured.
- the whole area was sealed by heat sealing.
- Bag-like containers can be manufactured. Combining this bag forming process with the filling process of the contents, i.e., filling the contents after heat-sealing the bottom and sides of the bag-shaped container, and then heat-sealing the upper part of the package, Can be manufactured. Therefore, this laminated film can be used for an automatic packaging device for solids, powders, or liquid materials such as confectionery and bread.
- the shrink film or shrink label using the propylene-based random copolymer of the present invention as a raw material can be stretched at 80 ° C or lower, and the film thus obtained has a shrinkage ratio at 80 ° C of 25%. It is a practical shrink label finolem that exhibits a shrinkage rate of 35% or more at 90 ° C or more and a 3.0% or less shrinkage rate at 40 ° C.
- the shrink film or shrink label is a propylene-based random copolymer of the present invention, and has a molecular weight distribution (Mw / Mn) of 4.0 or less, and further has a molecular weight distribution (Mw / Mn) of n-decane soluble component. ) Is 4.0 or less, and a resin composition blended with a petroleum resin, if necessary, and an antioxidant, a heat stabilizer, and a weather resistance stabilizer, if necessary. It is manufactured by a known co-extrusion technique and drawing technique by adding additives such as a slip agent, an anti-blocking agent and a crystal nucleating agent.
- a propylene-based random polymer or resin composition is extruded from a T-die into a flat sheet, cooled and drawn off, stretched 1.0 to 2.0 times in the machine direction, and stretched 10 to 10 times in the transverse direction. In the width direction, 0 to: Anneal while relaxing 12%, and then wind up to obtain a shrink film.
- the tubular sheet may be extruded from a round die and stretched in a tubular shape, that is, biaxial stretching simultaneously with the tubular method may be performed. .
- a hydrocarbon resin composed of an aliphatic hydrocarbon, an alicyclic hydrocarbon, a hydrogenated hydrocarbon, or the like, or a terpene resin can be arbitrarily used.
- the amount of the petroleum resin used is usually 0 to 45 parts by weight of the petroleum resin per 100 to 55 parts by weight of the propylene-based random copolymer, preferably 90 to 60 parts by weight of the propylene-based random copolymer.
- a resin composition containing 10 to 40 parts by weight of a petroleum resin is suitably used in the field of stretched films such as shrink films and shrink labels.
- a plastic film in which metal or metal oxide is vapor-deposited on a plastic film is known in order to suppress moisture vapor transmission of water vapor and to impart gas barrier property, light shielding property, conductivity and the like to gases such as oxygen and nitrogen.
- Films such as polyethylene terephthalate, polyamide, polycarbonate, polyethylene, and polypropylene are used as the plastic film as the base of the vapor deposition film.
- polypropylene prepared using a conventional Ziegler's Natta catalyst if the comonomer amount such as ethylene or 1-butene is increased to lower the melting point, the components in the low molecular weight region increase.
- the polypropylene which is found in the present invention and which is suitably used for a metal-deposited film such as aluminum having excellent performance is the xylene-soluble content (hereinafter, referred to as the content) in the propylene-based random copolymer of the present invention.
- cxs xylene-soluble content
- cxs is a copolymer satisfying 2.0 wt% or less, and a film obtained from this copolymer is further preferably represented by the following relational expression (Eq-5), preferably the following relational expression (Eq-5 ′). In other words, it satisfies the following relational expression (Eq-6) while satisfying the following relational expression (Ecj-5 ").
- E is the average value of Young's modulus in MD and TD.
- the metal vapor-deposited film obtained from the propylene-based random copolymer of the present invention has the following advantages: [1] adhesion to the vapor-deposited metal can be maintained for a long time, and vapor deposition peeling during use hardly occurs; For example, when a roll of a three-layer film composed of homopolypropylene (hi) / homopolypropylene (h2) / propylene random copolymer (r) is stored for a long time before metal deposition, the propylene random copolymer The amount of contamination from the surface of the coalesced (r) to the homopolypropylene (1) layer is suppressed, and [3] high rigidity against the melting point even in a high-temperature atmosphere, that is, wrinkles during deposition are unlikely to occur. It is a very practical metal-deposited film with
- Skeletal concentration Px (mol%) derived from one or more types of olefins selected from polyolefins having 4 to 20 carbon atoms and ethylene in the propylene-based random copolymer 20-30 mg of a sample was dissolved in 0.6 ml of a 1,2,4-trichlorobenzene (2: 1) solution (2: 1), and subjected to carbon nuclear magnetic resonance analysis ( 13 C-NMR). . Quantitative determination of propylene, ethylene, and olefins was obtained from the diatomic chain distribution.
- Propylene (mol%) (PP + 1 / 2EP) X 100 / [(PP + 1 / 2EP) + (1 / 2EP + EE) ⁇ (Eq-7)
- Ethylene (mol%) (1 / 2EP + EE ) X 100 / ((PP + 1 / 2EP) + (1 / 2EP + EE)-(Eq-8)
- ⁇ -olefin Macromoleculesl982,15,1150, Macromoleculesl991,24,4813, J Public information such as .Appl. Polym. Sci., 1991, 42, 399 was referenced.
- the measurement was performed using a differential scanning calorimeter (DSC: manufactured by PerkinElmer Inc.).
- DSC differential scanning calorimeter
- Tm melting point
- Third step The temperature is raised to 240 ° C at 10 ° C / min.
- Mw / Mn “weight average molecular weight fMw”, number average molecular weight (Mn) 1 Measured as follows using GPC150C Plus manufactured by Waters.
- the separation columns were TSKgel GMH6-HT and TSKgel GMH6-HTL, the column size was 7.5 mm in inner diameter and 600 mm in length, the column temperature was 140 ° C, and the mobile phase was 0-dichlorobenzene Using 0.025% by weight of BHT (Wako Pure Chemical Industries) as antioxidant and moving at l.Oml / min, the sample concentration was 0.1% by weight, the sample injection volume was 500 microliters, and detection was performed. A differential refractometer was used as the instrument. Standard polystyrene with molecular weight of the Mw rather 1000 and Mw> 4 X 10 6 The product was manufactured by Tosoh Corporation, and 1000 ⁇ Mw ⁇ 4 X 106 was manufactured by Pressure Chemical Company.
- n-decane insoluble portion 200 ml was added to 5 g of a sample of the propylene-based random copolymer, and the mixture was heated and dissolved at 145 ° C for 30 minutes. It was cooled to 20 ° C over about 3 hours and left for 30 minutes. Thereafter, the precipitate (n-decane insoluble portion) was separated by filtration. The filtrate was placed in about three times the amount of acetone, and the components dissolved in n-decane were precipitated. The precipitate was filtered off from acetone and dried. No residue was found even when the filtrate was concentrated to dryness. The amount of n-decane soluble part was determined by the following equation.
- n-decane soluble part amount (wt%) [precipitate weight / sample weight] X 100
- CFC was measured under the following conditions using the following equipment equipped with a temperature rising elution fractionation (TREF) section for performing compositional separation and a GPC section for performing molecular weight fractionation, and the amount of eluted components at 40 ° C or lower was calculated.
- TEZ temperature rising elution fractionation
- CFC T-150A type manufactured by Mitsubishi Yuka Corporation, trademark
- Elution temperature 0-135.
- 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]
- the measurement was performed at 135 ° C. using a decalin solvent. About 20 mg of the sample was dissolved in 15 ml of decalin, and the specific viscosity Ti sp was measured in an oil path at 135 ° C. After 5 ml of decalin 'solvent was added to this decalin solution for dilution, the specific viscosity ⁇ was measured in the same manner. Repeat this dilution operation twice more, and extrapolate the concentration (C) to 0? The value of 7 sp / C was determined as the intrinsic viscosity.
- Knife A DIATOME ULTRA DRY sample manufactured by DIATOME Inc. is separated from the resin, trimmed, exposed with an ultramicrotome equipped with a diamond knife, stained with metal oxide, ultra-thin sections are prepared, and TEM observation is performed. The photograph was taken at 4000x.
- the powder during the polymerization was sampled and visually judged.
- the polymerization tank was opened and visually judged.
- Sampling The pellets are heated and pressed at 230 ° C to create a thin sheet, cut to a predetermined size, and then inserted into a predetermined container. Measurement conditions: Heat up to 230 at 40 ° C / min and preheat in an atmosphere of 230 ° C for 10 minutes. After that, the temperature is lowered to 105 ° C at 320 ° C / min and kept in an atmosphere of 105 ° C. The time required to reach 1/2 of the total heat of crystallization obtained at that time is defined as a half-crystallization time ( ⁇ / 2 ).
- the film was sampled to a width of 5 mm, sealed at a sealing time of 1 second and a pressure of 0.2 MPa. Both ends of the sealed film were pulled at 300 mm / min and the maximum peeling strength was measured.
- the upper part of the sealer was set at a specified temperature of 115 to 130 ° C, and the lower part was set at 70 ° C.
- the stretched film was cut into a piece having a width of lcm and a length of 15 cm, and contracted by immersing it in warm water of a predetermined temperature for 10 seconds.
- the shrinkage was determined from the original length and the shrunken length.
- the stretched film was cut into a size of lcm in width and 15cm in length, stored in an open at 40 ° C for 7 days and shrunk. The shrinkage was determined from the original length and the shrunken length.
- the Young's modulus of the stretched film was measured according to JIS K 6781.
- the tensile speed is 200mm / min and the distance between chucks is 80mm.
- tetrakis [methylene-3 (3,5-di-t-butyl-4-hydroxyphenyl) propionate] methane is added as an antioxidant.
- 0.1 part by weight of 2,4-bis (1,1-dimethyl) -phosphate phenol, 0.1 part by weight of calcium stearate as a neutralizing agent, 0.15 part by weight of synthetic silica, 0.1 part by weight of L-acid amide The mixture was melted and kneaded at a resin temperature of 250 ° C. using a KTX-30 twin screw extruder to pelletize a propylene-based random copolymer.
- the pellet obtained by the above method [al] was melted at 250 ° C. using a 65 mm ⁇ extruder, and extruded from a die to obtain a film having a thickness of 30 ⁇ .
- the details of the film forming conditions are as follows.
- MAO methylaluminoxane
- a catalyst prepared in the above (3) with propylene at 45 kg / hr and hydrogen at 9 NL / hr in a tubular polymerization vessel with an inner volume of 58 L and a diameter of 2.5 cm (used in the prepolymerization described in all Examples and Comparative Examples described below).
- the slurry was continuously supplied at a rate of 4.2 g / hr as a solid catalyst component and at a rate of 3.5 mL / hr of triethylamine, and polymerization was carried out in a liquid-full state without a gas phase.
- the temperature of the tubular reactor was 30 ° C and the pressure was 3.0 MPa'G.
- the obtained prepolymer slurry was sent to a 1000 L vessel polymerization vessel with a stirrer and further polymerized.
- propylene was supplied at 72 kg / hr
- hydrogen was supplied at 15 NL / hr
- ethylene was supplied at 0.75 kg / hr.
- Polymerization was carried out at a polymerization temperature of 70 ° C and a pressure of 2.9 ⁇ & G.
- the obtained slurry was further sent to a 500 L vessel polymerization reactor equipped with a stirrer for further polymerization.
- propylene was supplied at 16 kg / lu: hydrogen, 10 NL / hr, and ethylene at 0.5 kg / hr.
- Polymerization was performed at a polymerization temperature of 69 ° C and a pressure of 2.8 MPa-G.
- the obtained polypropylene random copolymer was pelletized according to the above-mentioned molding and processing method [al] pelletizing method. (7) Film molding
- a film was prepared from the pellets obtained in the above (6) in accordance with the above-mentioned forming method [a2] film forming method.
- Table 1 shows the physical properties of the obtained polymer as primary films.
- the polymerization was performed in the same manner as in Example 1 except that the polymerization method in the main polymerization step [P-3] was changed as follows.
- a prepolymer slurry was obtained in the same manner as in the steps [P-1] and [ ⁇ -2] of Example 1.
- the obtained slurry was sent to a vessel polymerization device with a stirrer having a capacity of 1000 L and further polymerized.
- propylene was supplied at 72 kg / hr
- hydrogen was supplied at 15 NL / hr
- ethylene was supplied at 0.75 kg / hr.
- Polymerization was performed at a polymerization temperature of 70 ° C and a pressure of 2.9 MPa'G.
- the obtained slurry was further sent to a 500 L vessel polymerization reactor equipped with a stirrer, and further polymerized.
- propylene was supplied at 16 kg / hr
- hydrogen was supplied at 10 NL / hr
- ethylene was supplied at 0.6 kg / hr
- 1-butene was supplied at 2.5 kg / hr.
- Polymerization was performed at a polymerization temperature of 69 ° C and a pressure of 2.8 MPa'G.
- Table 1 shows the primary properties of the obtained polymer and physical properties as a film.
- a catalyst slurry obtained by a method similar to the method described in the prepolymerization step [P-1] of Example 1 was used as a solid catalyst component in a tubular polymerization vessel having an internal capacity of 58 L, containing 45 kg / hr of propylene and 9 NL / hr of hydrogen. 4.2g / hr, triethyl aluminum at 3.5mL / hr, Ethylene was continuously supplied at 0.08 kg / hr, and polymerization was carried out in a liquid full state without any gas phase.
- the temperature of the tubular reactor was 30 ° C and the pressure was 3.0 MPa'G.
- the obtained slurry was sent to a 1000-L vessel polymerization vessel with a stirrer for further polymerization.
- propylene was supplied at 72 kg / hr
- hydrogen was supplied at 15 NL / hr
- ethylene was supplied at 0.75 kg / hr.
- the polymerization was performed at a polymerization temperature of 70 and a pressure of 2.9 MPa'G.
- the obtained slurry was further sent to a 500 L vessel polymerization reactor equipped with a stirrer to further perform polymerization.
- propylene was supplied at 16 kg / hr
- hydrogen was supplied at 10 NL / hr
- ethylene was supplied at 0.5 kg / hr.
- Polymerization was performed at a polymerization temperature of 69 ° C and a pressure of 2.8 MPa'G.
- Table 1 shows the primary properties of the obtained polymer and physical properties as a film.
- Example 2 The same procedure as in Example 1 was carried out except that the prepolymerization step [P-2] and the main polymerization step [P-3] were changed as follows, and a polypropylene homopolymer was obtained by the following polymerization method. Manufactured.
- a catalyst slurry obtained by a method similar to the method described in the prepolymerization step [P-1] of Example 1 was used as a solid catalyst component in a tubular polymerization vessel having an internal capacity of 58 L, containing 45 kg / hr of propylene and 9 NL / hr of hydrogen.
- the temperature of the tubular reactor was 30 ° C and the pressure was 3.0 MPa'G.
- the obtained slurry was sent to a 1000 L vessel polymerization reactor with a stirrer, and further polymerization was performed.
- Propylene was supplied at 72 kg / hr and hydrogen was supplied at 15 NL / hr to the polymerization reactor. Paid. Polymerization was performed at a polymerization temperature of 70 ° C and a pressure of 2.9 MPa'G.
- the obtained slurry was further sent to a 500 L vessel polymerization reactor equipped with a stirrer to further perform polymerization.
- Propylene was supplied at 16 kg / hr and hydrogen was supplied at 10 NL / hr to the polymerization reactor.
- Polymerization was performed at a polymerization temperature of 69 and a pressure of 2.8 MPa'G.
- the 100% by weight of the polypropylene resin obtained by combining 6 parts by weight of the polypropylene homopolymer obtained above and 94 parts by weight of the propylene-based copolymer produced in Comparative Example 1 was subjected to the above-mentioned molding / processing method [al] pelletizing method. Then, a film was formed in accordance with the above-mentioned forming method [a2] film forming method.
- Table 1 shows the primary properties of the obtained polymer and physical properties as a film.
- 750 mL was added dropwise over 1 hour to 2000 mL of titanium tetrachloride kept at -20 ° C. After the dropwise addition, the temperature of the resulting mixture was raised to 110 ° C over 4 hours, and when it reached 11 Ot, 52.2 g of diisobutyl phthalate (DIBP) was added. Held. Next, a solid portion was collected by filtration while hot, and the solid portion was resuspended in 2750 mL of titanium tetrachloride, and then heated again at 110 ° C. for 2 hours.
- DIBP diisobutyl phthalate
- the solid portion was collected again by hot filtration, and washed with 110 ° C n-decane and n- hexane until no titanium compound was detected in the washing solution.
- the solid titanium catalyst component prepared as described above is stored as a hexane slurry, a part of which was dried and the catalyst composition was examined.
- Solid titanium catalyst component Contained 3% by weight of titanium, 58% by weight of chlorine, 18% by weight of magnesium and 21% by weight of DIBP.
- the resulting prepolymerized catalyst was resuspended in purified heptane, transferred to a catalyst supply tank, and adjusted with purified heptane so that the concentration of the solid titanium catalyst component was lg / L.
- the prepolymer (prepolymerized catalyst) thus obtained contained 10 g of polypropylene per lg of the solid titanium catalyst component.
- 66L of liquefied propylene is charged into a polymerization tank 1 with an internal volume of 100L and equipped with a stirrer. While maintaining this liquid level, liquefied propylene is 110kg / hr, prepolymer (prepolymerization catalyst) 1.2g / hr, and triethyl aluminum 5.4mL / hr, cyclohexylmethyldimethoxysilane 9.9 mL / hr, ethylene 0.09 kg / hr were continuously supplied, and polymerization was carried out at a temperature of 66 ° C. Hydrogen was continuously supplied so that the concentration of the gas phase in the polymerization tank 1 was maintained at 0.7 mol%. The obtained polymer was sent in a slurry state to a polymerization tank 2 having an internal volume of 1000 L with a stirrer.
- FIGS. 2 and 3 show TEM photographic images of the obtained propylene-based random copolymer particles measured in accordance with the above-mentioned analytical method [mil].
- Table 1 shows the primary properties of the obtained polymer and physical properties as a film. [table 1]
- diphenylmethylene (3-tert-butyl-5-methylcyclopentagenenyl) (2,7-di-tert-butylfluorenyl) zirconium dichloride was placed in a 5 L four-necked flask. 2.0 g was weighed. The flask was taken out, toluene 0.46 liters as in Example 1. The MAO / Si0 2 / toluene slurry 1.4 l was prepared in the same manner as (1) was added under nitrogen, the mixture was stirred carrying 30 min.
- the obtained prepolymer was resuspended in purified n-heptane and adjusted with n-heptane so that the concentration of the solid catalyst component became 2 g / L. A part was sampled and the prepolymer was analyzed. This prepolymer contained 10 g of polyethylene per gram of solid catalyst component.
- the slurry obtained in the above (3) prepolymerization was sent to a 1000 L internal vessel reactor with a stirrer and further polymerized.
- propylene was supplied at 50 kg / hr, ethylene at 1.7 kg / l, and hydrogen was supplied so that the hydrogen concentration in the gas phase became 0.16 mol%.
- Polymerization was performed at a polymerization temperature of 60 ° C and a pressure of 2.5 MPa'G.
- the resulting slurry was sent to a 500 L vessel polymerization vessel equipped with a stirrer for further polymerization.
- propylene was supplied at llkg / hr
- ethylene was supplied at 1.2 kg / hr
- hydrogen was supplied so that the hydrogen concentration in the gas phase became 0.16 mol%.
- Polymerization was performed at a polymerization temperature of 59 ° C and a pressure of 2.4 MPa'G.
- the slurry obtained by the pre-polymerization was sent to a 1000-L vessel reactor with a stirrer and further polymerized. 'To the polymerization vessel, propylene was fed at 50 kg / hr, ethylene at 1.5 kg / hr, and hydrogen so that the hydrogen concentration in the gas phase became 0.33 mol%. Polymerization was performed at a polymerization temperature of 60 ° C and a pressure of 2.5 MPa'G.
- the resulting slurry was sent to a 500 L vessel polymerization vessel equipped with a stirrer for further polymerization.
- propylene was supplied at llkg / hr
- ethylene was supplied at 1.0 kg / hr
- hydrogen was supplied so that the hydrogen concentration in the gas phase became 0.33 mol%.
- Polymerization was performed at a polymerization temperature of 59 ° C and a pressure of 2.4 MPa'G.
- a catalyst slurry prepared by a method similar to the method described in (2) Prepolymerization in Example 3 above was used as a solid hornworm medium component in a tubular polymerization vessel having an inner volume of 58 L, with propylene at 57 kg / hr, hydrogen at 4 NL / hr, and the method described in (2) Prepolymerization in Example 3 above.
- 4.9 g / hr and 2.7 mL / r of triethylaluminum were continuously supplied, and polymerization was carried out in a liquid-full state without a gas phase.
- the temperature of the tubular reactor was 30 ° C and the pressure was 2.6 MPa'G.
- the slurry obtained by the above prepolymerization was converted to a vessel weight with a stirrer having an internal volume of 1000 L.
- the mixture was sent to a combiner and further polymerized.
- propylene was fed at 50 kg / hj, ethylene at 1.5 kg / hr, 1-butene at 2.7 kg / hr, and hydrogen so that the hydrogen concentration in the gas phase became 0.33 mol%.
- Polymerization was performed at a polymerization temperature of 60 ° C and a pressure of 2.5 MPa'G.
- the resulting slurry was sent to a 500 L vessel polymerization vessel equipped with a stirrer for further polymerization.
- propylene was supplied at llkg / hr
- ethylene was supplied at 1.0 kg / hr
- hydrogen was supplied so that the hydrogen concentration in the gas phase became 0.33 mol%.
- Polymerization was performed at a polymerization temperature of 59 ° C and a pressure of 2.4 MPa'G.
- the resulting dimethylsilylenebis - (2-methyl-4-Hue Niruindeyuru) zirconium dichloride / MAO / Si0 2 / toluene slurry was subjected to 99% substitution at n- heptane, the final slurry amount was set to 4.5L . This operation was performed at room temperature.
- the obtained prepolymerized catalyst was resuspended in purified heptane and adjusted with n-heptane so that the concentration of the solid catalyst component became 2 g / L. A part was sampled and the prepolymer was analyzed. This prepolymer is solid The body catalyst component contained 10 g of polyethylene per lg.
- the slurry obtained in the above (3) prepolymerization was sent to a 1000 L internal vessel reactor with a stirrer and further polymerized.
- propylene was fed at 50 kg / hr
- ethylene was fed at 2.2 kg / hr
- hydrogen was fed so that the hydrogen concentration in the gas phase became 0.15 mol%.
- Polymerization was performed at a polymerization temperature of 60 ° C and a pressure of 2.5 MPa'G.
- the obtained slurry was sent to a 500 L vessel polymerization reactor equipped with a stirrer, and further polymerized.
- propylene was supplied at llkg / hr
- ethylene was supplied at 1.5 kg / hr
- hydrogen was supplied so that the hydrogen concentration in the gas phase became 0.15 mol%.
- Polymerization was performed at a polymerization temperature of 59 ° C and a pressure of 2.4 MPa'G.
- the polymerization was carried out in the same manner as in Comparative Example 4, except that the main polymerization was changed as follows.
- the slurry obtained by the same method as that described in (4) Prepolymerization of Comparative Example 4 was sent to a 1000-L vessel polymerization vessel with a stirrer and further polymerized.
- propylene was fed at 50 kg / hr, ethylene at 1.6 kg / hr, and hydrogen so that the hydrogen concentration in the gas phase became 0.09 mol%.
- Polymerization was performed at a polymerization temperature of 60 ° C and a pressure of 2.5 MPa'G.
- the obtained slurry was sent to a 500 L vessel polymerization reactor equipped with a stirrer, and further polymerized.
- propylene was supplied at llkg / hr
- ethylene was supplied at l.lkg / hr
- hydrogen was supplied so that the hydrogen concentration in the gas phase became 0.09 mol%.
- Polymerization temperature 59 ° C Polymerization was performed at a pressure of 2.4 MPa'G.
- a catalyst slurry of the prepolymer prepared in the same manner as described in Example 3, paragraph (2) of propylene, 50 kg / hr and hydrogen at 4 NL / hr in a 58 L tubular polymerization vessel was used.
- 5.0 g / hr and triethylaluminum 2.4 g / hr were continuously supplied, and polymerization was carried out in a liquid-full state without a gas phase.
- the temperature of the tubular reactor was 30 ° C. and the pressure was 2.6 MPa′G.
- the slurry obtained by the prepolymerization was sent to a 1000-L vessel reactor equipped with a stirrer, and further subjected to main polymerization.
- propylene was supplied at 40 kg / hr
- ethylene was supplied at 1.8 kg / hr
- hydrogen was supplied so that the hydrogen concentration in the gas phase became 0.16 mol%.
- Polymerization was carried out at a polymerization temperature of 60 ° C and a pressure of 2.5 MPa'G.
- a very small amount (0.5 wt% or less of the whole polymer) of coagulated powder that did not pass through the 10-mesh screen was observed.
- the obtained slurry was sent to a 500 L vessel polymerization reactor equipped with a stirrer, and further subjected to main polymerization.
- propylene was supplied at 15 kg / hr
- ethylene was supplied at 0.6 kg / hr
- hydrogen was supplied so that the hydrogen concentration in the gas phase became 0.16 mol%.
- Polymerization was performed at a polymerization temperature of 59 ° C and a pressure of 2.4 MPa'G. Although no fouling phenomenon was observed during the second main polymerization, a very small amount (0.5 wt% or less of the total polymer) of the agglomerated powder that did not pass through the 10-mesh screen was observed in the polymerization tank.
- FIGS. 4 and 5 show TEM photographic images of the obtained propylene-based random copolymer particles measured in accordance with the above-mentioned analytical method [mil].
- prepolymerized catalyst was resuspended in purified heptane and adjusted with n-heptane so that the solid catalyst component concentration became 2 g / L. Partially sampled and analyzed for prepolymer Prayed. This prepolymer contained 10 g of polypropylene per gram of solid catalyst component.
- a prepolymer slurry was obtained from this prepolymer by the same method as described in (1) Prepolymerization of Example 6.
- Propylene was supplied at 90 kg / hr, ethylene was supplied at 1.8 kg / hr, and hydrogen was supplied to a vessel polymerization vessel with a stirrer having a capacity of 1000 L so that the hydrogen concentration in the gas phase became 0.16 mol%. Further, 5.0 g / hr and 2.4 g / hr of triethylaluminum were supplied as a solid catalyst component using the catalyst slurry produced by the prepolymerization, and polymerization was carried out at a polymerization temperature of 60 ° C. and a pressure of 2.5 MPa′G.
- the resulting slurry was sent to a 500 L vessel polymerization vessel equipped with a stirrer for further polymerization.
- propylene was supplied at 15 kg / hr
- ethylene was supplied at 0.6 kg / hr
- hydrogen was supplied so that the hydrogen concentration in the gas phase became 0.16 mol%.
- Polymerization was performed at a polymerization temperature of 59 and a pressure of 2.4 MPa'G.
- Prepolymerization is not performed, and prepolymerization and main polymerization are performed in the same manner as in Example 6. It was.
- a catalyst slurry prepared by a method similar to that described in (2) Solid catalyst component of Example 6 above was used as a solid catalyst component in a 58 L tubular polymerization reactor with 50 kg / hr of propylene and 4 NL / hr of hydrogen. 5.0 g / hr and 2.4 g / hr of triethylaluminum were continuously supplied, and the polymerization was carried out in a liquid-full state without any gas phase.
- the temperature of the tubular reactor was 30 ° C and the pressure was 2.6 MPa'G.
- a propylene prepolymer prepared by a method similar to the method described in item (2) of Example 3 was prepared in a tubular polymerization vessel having a content of 58 L, with propylene at 48 kg / hr, ethylene at 2.2 kg / hr, hydrogen at 4 NL / hr.
- the catalyst slurry was continuously supplied at 5.0 g / hr as a solid catalyst component and 2.4 g / hr of triethylaluminum, and was polymerized in a liquid-full state without a gas phase.
- the temperature of the tubular reactor was 30 ° C and the pressure was 2.6 MPa'G.
- the obtained prepolymer was resuspended in purified n-heptane and adjusted with n-heptane so that the solid catalyst component concentration became 2 g / L. Some of the samples were sampled and the prepolymerized catalyst was analyzed. This prepolymerization catalyst contained 10 g of polyethylene per lg of solid catalyst component. Using this prepolymer, prepolymerization and main polymerization were carried out in the same manner as in Example 6. As a result, a slight fouling phenomenon was observed during the prepolymerization and the main polymerization. Table 3 shows the results.
- Example 6 was carried out in the same manner as in Example 6, except that the method for producing the prepolymer was changed as follows.
- the obtained prepolymerized catalyst was resuspended in purified heptane to a solid catalyst component concentration of 2 g / L. Adjustment was made with heptane so as to be as follows. Partial sampling was performed to analyze the prepolymerization catalyst.
- the prepolymerization catalyst contained 10 g of ethylene / 1-hexene copolymer per gram of solid catalyst component.
- prepolymerization and main polymerization were carried out in the same manner as in Example 6. As a result, a slight fouling phenomenon was observed during the prepolymerization and the main polymerization. Table 3 shows the results.
- the polymerization was carried out in the same manner as in Example 6, except that the main polymerization was changed as follows.
- the obtained prepolymerized catalyst was resuspended in purified heptane and adjusted with heptane so that the solid catalyst component concentration became 2 g / L. Partial sampling was performed to analyze the prepolymerization catalyst.
- the prepolymerization catalyst contained 100 g of polyethylene per lg of solid catalyst component. Table 4 shows the results.
- the same operation as in Example 6 was carried out except that 10% by weight was added to the medium component.
- 10% by weight was added to the medium component.
- Example 6 In the prepolymerization of Example 6 (this is the same polymerization as the prepolymerization of Example 3), the amount of n-heptane used during washing with n-heptane was reduced, and at the same time the number of washings was reduced to 1 (catalyst). The same procedure as in the prepolymerization of Example 3 was carried out except that the washing ratio was 90%. Using this prepolymer, an attempt was made to carry out a prepolymerization followed by a main polymerization in exactly the same way as the prepolymerization described in Example 6 and the main polymerization. As a result, fouling during the prepolymerization was extremely large, so the prepolymerization had to be stopped halfway.
- the obtained prepolymerized catalyst was resuspended in purified n-heptane and adjusted with n-heptane so that the solid catalyst component concentration became 2 g / L.
- the prepolymer contained polyethylene per log of solid catalyst component lg.
- the obtained slurry was sent to a 1000-L vessel polymerization vessel with a stirrer for further polymerization.
- Propylene was supplied at 65 kg / hr and hydrogen was supplied at 10 NL / hr to the polymerization reactor.
- Polymerization was performed at a polymerization temperature of 66 ° C and a pressure of 2.6 MPa'G.
- the obtained slurry was sent to a 500 L vessel polymerization reactor equipped with a stirrer, and further polymerized.
- propylene was supplied at 16 kg / hr
- hydrogen was supplied at 7 NL / hr
- ethylene was supplied at 1.5 kg / hr.
- Polymerization was performed at a polymerization temperature of 60 ° C and a pressure of 2.5 MPa'G.
- the obtained polypropylene random copolymer was pelletized in accordance with the above-mentioned molding and processing method [all pelletizing method.
- Table 6 shows the primary property values and physical properties of the obtained polymer as a film.
- Example 11 The same procedure as in Example 11 was carried out except that the polymerization method was changed as follows. A fundamental difference from Example 11 is that the main polymerization [P-3a] was omitted and the prepolymerization [P-2]) was shifted to the main polymerization [P-3b]).
- the obtained slurry was sent to a 1000 L vessel polymerization reactor with a stirrer, and further polymerization was performed.
- propylene was supplied at 69 kg / hr
- hydrogen was supplied at 10 NL / hr
- ethylene was supplied at 1.6 kg / hr.
- Polymerization was carried out at a polymerization temperature of 60 and a pressure of 2.6 MPa'G.
- the obtained slurry was sent to a 500 L vessel polymerization reactor equipped with a stirrer, and further polymerized.
- Propylene was supplied at 10 kg / hr
- hydrogen was supplied at 7 NL / hr
- ethylene was supplied at 0.6 kg / hr.
- Polymerization was performed at a polymerization temperature of 50 ° C and a pressure of 2.5 MPa'G.
- the propylene random copolymer thus obtained was pelletized and formed into a film in the same manner as described in Example 11.
- Table 6 shows the primary property values and physical properties of the obtained polymer as a film.
- 300 L of liquefied propylene was charged into a 500 L polymerization tank 1 equipped with a stirrer, and while maintaining the liquid level, 137 kg / hr of liquefied propylene, 1.9 g / hr of the prepolymer prepared in the above (1), 5.0 mL of aluminum, 7.1 mL / hr of cyclohexylmethyldimethoxysilane, and 2.8 kg / hr of ethylene were continuously supplied, and polymerization was performed at a temperature of 65 ° C. Hydrogen was continuously supplied so that the concentration of the gas phase in the polymerization tank 1 was maintained at 4.0 mol%.
- the propylene random copolymer thus obtained was formed into a pelletized film in the same manner as described in Example 11.
- Table 6 shows the physical properties of the obtained polymer as a primary property film.
- Table 7 shows the physical properties measured for the obtained pellets and films.
- Example 12 The propylene random copolymer (A1) used in Example 12 and the propylene random copolymer ( ⁇ 2) obtained by changing the polymerization conditions such as the amount of ethylene feed during the main polymerization in Example 6
- the same procedure as in Example 12 was carried out except that the ethylene content was 5.7% by weight and the melting point was 110 ° C. at a blend ratio of ( ⁇ 1) :( ⁇ 2) -50: 50.
- Table 7 shows the physical properties measured for the obtained pellets and films.
- Example 12 was carried out in the same manner as in Example 12 except that only the propylene random copolymer (Al) used in Example 12 was used at 100 parts by weight.
- Table 7 shows the physical properties measured for the obtained pellets and films.
- Table 7 shows the physical properties of the obtained pellets and films measured 10 times.
- a film having a thickness of 30 ⁇ was prepared from the obtained pellets in accordance with the film forming method of the above-mentioned molding and processing method [ a 2].
- Table 8 shows the properties of the propylene polymer pellets and the film properties.
- ZN Zigraina-based catalyst
- the obtained pellet was press-molded to prepare a sheet having a thickness of 0.4 mm.
- Pressing conditions were as follows: preheating at 230 ° C for 6 minutes, pressurization to produce a molten sheet, and cooling at 30 ° C for 2 minutes.
- the sheet was cut into a predetermined size, and uniaxially stretched using KAROIV manufactured by Bruckna Co., Ltd.
- the stretching conditions were pre-heating at 90 ° C. for 30 seconds and uniaxial stretching at a speed of 0.6 m / min.
- the stretching ratio is 5 times.
- Table 9 summarizes the results of the pellet physical property film shrinkage obtained as described above.
- Example 18 70 parts by weight of the propylene random copolymer used in Example 18, 100 parts by weight of a resin composition in which 30 parts by weight of petroleum resin (Arukawa Chemical's Alcon P-140) was blended The procedure was performed in the same manner as in Example 18 except for using.
- Table 9 summarizes the results of the obtained physical properties of the pellets and the film shrinkage.
- Example 18 Same as Example 18 except that 100 parts by weight of a resin composition obtained by mixing 30 parts by weight of a petroleum resin (Alcon P-140 manufactured by Arakawa Kagaku) with 70 parts by weight of the propylene polymer used in Comparative Example 22 was used. went. Table 9 summarizes the results of the obtained physical properties of the pellets and the film shrinkage.
- a resin composition obtained by mixing 30 parts by weight of a petroleum resin Alcon P-140 manufactured by Arakawa Kagaku
- Table 9 summarizes the results of the obtained physical properties of the pellets and the film shrinkage.
- This random copolymer is formed into a film using a single-layer cast molding machine [Single-layer machine-made single-layer cast film molding machine SE-65-30], and at the same time, a corona treatment is applied to the film surface (one side).
- a surface-treated single-layer film molded product was obtained.
- the melting temperature of the resin was set at 250 ° C, and the cooling roll temperature was set at 12 ° C.
- the corona discharge intensity was adjusted so that the film thickness was 30 and the film surface tension immediately after molding was 45 mN / m.
- the change with time of the surface tension of this surface-treated single-layer film molded product was measured. The results are shown in Table 10.
- the propylene random copolymer of the present invention has the characteristics of a low melting point and a low content of n -decane-soluble components (that is, a low amount of low crystalline components). From the propylene random copolymer, It is possible to obtain various useful molded products such as various films, sheets with high anti-blocking properties and little decrease in transparency after heat treatment, injection molded products with high transparency, blow molded products, and injection blow molded products. it can.
Abstract
Description
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WO2000008080A1 (fr) * | 1998-08-04 | 2000-02-17 | Chisso Corporation | Copolymere sequence propylene//propylene/olefine et son procede de production |
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JP2685263B2 (ja) | 1988-12-26 | 1997-12-03 | 三井石油化学工業株式会社 | プロピレン系ランダム共重合体およびその製造方法 |
EP0955321A3 (en) * | 1988-12-26 | 1999-12-08 | Mitsui Chemicals, Inc. | Olefin copolymers and processes for preparing same |
DE4242486A1 (de) | 1992-12-16 | 1994-06-23 | Basf Ag | Propylen-Homopolymere |
CA2162946C (en) | 1994-11-21 | 2004-01-06 | Kazuyuki Watanabe | Propylene block copolymer and process for producing the same |
JPH09110934A (ja) | 1995-10-20 | 1997-04-28 | Chisso Corp | プロピレン−エチレン共重合体およびその製造方法ならびにその成形品 |
TW482770B (en) * | 1997-08-15 | 2002-04-11 | Chisso Corp | Propylene/ethylene random copolymer, molding material, and molded article |
JP2000212194A (ja) | 1999-01-25 | 2000-08-02 | Mitsui Chemicals Inc | メタロセン化合物、オレフィン重合用触媒およびオレフィンの重合方法 |
JP3701140B2 (ja) * | 1999-03-02 | 2005-09-28 | 三井化学株式会社 | 重合粉体の流動性改良方法 |
US6846943B2 (en) * | 2000-05-23 | 2005-01-25 | Chisso Corporation | Metallocene compound, olefin polymerization catalyst containing the compound, and method for producing an olefin polymer by use of the catalyst |
US6878787B2 (en) * | 2003-08-26 | 2005-04-12 | Fina Technology, Inc. | Polyamide supported metallocene catalysts |
-
2004
- 2004-08-20 US US10/568,964 patent/US7402638B2/en active Active
- 2004-08-20 EP EP04772287A patent/EP1661924B1/en active Active
- 2004-08-20 KR KR1020067003403A patent/KR100807763B1/ko active IP Right Grant
- 2004-08-20 DE DE602004026602T patent/DE602004026602D1/de active Active
- 2004-08-20 TW TW093125157A patent/TWI247756B/zh active
- 2004-08-20 WO PCT/JP2004/012331 patent/WO2005019283A1/ja not_active Application Discontinuation
- 2004-08-20 JP JP2004241066A patent/JP5036964B2/ja active Active
- 2004-08-20 CN CNB2004800241267A patent/CN100475863C/zh active Active
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JPS5657814A (en) * | 1979-10-16 | 1981-05-20 | Mitsui Petrochem Ind Ltd | Preparation of molding olefin copolymer |
JPH02274703A (ja) * | 1989-03-11 | 1990-11-08 | Hoechst Ag | シンジオタクチック‐ポリオレフィンの製造方法およびこれに使用される触媒 |
JPH09157320A (ja) * | 1995-12-05 | 1997-06-17 | Mitsui Petrochem Ind Ltd | オレフィン重合用固体触媒およびオレフィン重合用予備重合触媒 |
JPH11349634A (ja) * | 1998-06-05 | 1999-12-21 | Mitsubishi Chemical Corp | プロピレン重合体 |
WO2000008080A1 (fr) * | 1998-08-04 | 2000-02-17 | Chisso Corporation | Copolymere sequence propylene//propylene/olefine et son procede de production |
JP2000327707A (ja) * | 1999-05-24 | 2000-11-28 | Mitsui Chemicals Inc | オレフィンのスラリー重合方法 |
WO2001027124A1 (fr) * | 1999-10-08 | 2001-04-19 | Mitsui Chemicals, Inc. | Compose metallocene, son procede de fabrication, catalyseur de polymerisation d'olefine, procede de production de polyolefine et polyolefine |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011038331A1 (en) | 2009-09-28 | 2011-03-31 | Mitsui Chemicals, Inc. | Viscosity modifier for lubricating oils, additive composition for lubricating oils, and lubricating oil composition |
US9045574B2 (en) | 2009-09-28 | 2015-06-02 | Mitsui Chemicals, Inc. | Viscosity modifier for lubricating oils, additive composition for lubricating oils, and lubricating oil composition |
WO2012078572A1 (en) | 2010-12-10 | 2012-06-14 | The Lubrizol Corporation | Lubricant composition containing viscosity index improver |
Also Published As
Publication number | Publication date |
---|---|
TWI247756B (en) | 2006-01-21 |
DE602004026602D1 (de) | 2010-05-27 |
TW200516088A (en) | 2005-05-16 |
KR100807763B1 (ko) | 2008-02-28 |
JP2006057010A (ja) | 2006-03-02 |
EP1661924A4 (en) | 2008-01-30 |
CN100475863C (zh) | 2009-04-08 |
JP5036964B2 (ja) | 2012-09-26 |
CN1839163A (zh) | 2006-09-27 |
US20060222849A1 (en) | 2006-10-05 |
KR20060052988A (ko) | 2006-05-19 |
EP1661924A1 (en) | 2006-05-31 |
US7402638B2 (en) | 2008-07-22 |
EP1661924B1 (en) | 2010-04-14 |
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