WO2005087863A1 - プロピレン系樹脂組成物、及びその成形体 - Google Patents
プロピレン系樹脂組成物、及びその成形体 Download PDFInfo
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- WO2005087863A1 WO2005087863A1 PCT/JP2005/001690 JP2005001690W WO2005087863A1 WO 2005087863 A1 WO2005087863 A1 WO 2005087863A1 JP 2005001690 W JP2005001690 W JP 2005001690W WO 2005087863 A1 WO2005087863 A1 WO 2005087863A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- 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
- C08F297/00—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
- C08F297/06—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type
- C08F297/08—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type polymerising mono-olefins
-
- 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
- C08F297/00—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
- C08F297/06—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type
- C08F297/08—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type polymerising mono-olefins
- C08F297/083—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type polymerising mono-olefins the monomers being ethylene or propylene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/44—Carbon
- C09C1/48—Carbon black
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/44—Carbon
- C09C1/48—Carbon black
- C09C1/50—Furnace black ; Preparation thereof
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/19—Oil-absorption capacity, e.g. DBP values
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
Definitions
- the present invention relates to a propylene resin composition excellent in both conductivity and moldability, and a propylene resin molded article obtained by molding the propylene resin composition.
- Polypropylene resin is widely used as a material for injection molding mainly in the field of industrial parts and containers, such as home appliance parts, automobile parts, housing equipment parts, and food containers.
- the use of catalysts has been steadily increasing due to the remarkable progress of polymerization technology and composite technology in recent years.
- the conductive material to be blended with the polypropylene resin includes, in addition to carbon black, particulate materials such as Dalaphite, titanium oxide, and metal powder, and fibrous materials such as carbon fiber, metal fiber, and conductive whiskers. And others.
- particulate materials such as Dalaphite, titanium oxide, and metal powder
- fibrous materials such as carbon fiber, metal fiber, and conductive whiskers.
- fibrous materials are not preferred because blending the same deteriorates the appearance of the composition or breaks fibers in the process of repeated use (recycling), thereby impairing the conductive performance.
- carbon black is most preferably used as the conductive material. It is the present situation. However, since the flowability of the polypropylene resin composition is greatly reduced with the addition of conductive carbon black, the molding ability is reduced mainly in injection molding applications. Improvements are desired. It is generally known that, among conductive carbon blacks, Ketjen black that has been subjected to an activation treatment has the highest conductivity. However, Ketjen Black has poor dispersibility in polypropylene resin, and although conductivity is improved, there is a problem that tensile elongation is reduced due to poor dispersion.o
- An object of the present invention is to provide a conductive propylene-based resin composition containing carbon black, which has solved the drawbacks of the prior art, has excellent conductivity and molding processability, and has an excellent balance between them. To provide.
- the present inventors have conducted intensive studies on a propylene resin composition having excellent conductivity, moldability and balance, and as a result, have found that a propylene resin having a specific fluidity is obtained.
- the present inventors have found that by blending conductive carbon black having specific physical properties, it is possible to obtain a propylene-based resin composition which is excellent in conductivity and molding processability and has a good balance between them. Was completed.
- the present invention has the following gist.
- a copolymer of ethylene and one or more other ⁇ -olefins having an ethylene content of at least 50% by weight, an MFR of at least 1. OgZlO, and a density of at most 0.890 gZcc.
- propylene ⁇ is propylene ⁇ composition according to the above 1 or 2, characterized in that a propylene copolymer having O Les fins comonomer to 0. 1- 50 weight 0/0 containing other than propylene object.
- Propylene-based resin A propylene-based block copolymer containing a propylene homopolymer block and a copolymer block obtained by copolymerizing ethylene with another ⁇ -olefin, and having an MFR of 5 to 300 gZl0.
- the propylene homopolymer block has an MFR of 20 to 300 gZl0 min
- the copolymer block has an ethylene content of 15 to 60% by weight
- the propylene-based resin composition according to any one of the above items 1 to 3, wherein
- Oxygen-containing functional group density ( ⁇ mol / m 2 )
- a propylene-based resin molded article obtained by molding the propylene-based resin composition according to any one of the above 1 to 12, having a volume resistivity of 10 2 to 10 9 ⁇ cm.
- a propylene-based resin having an excellent balance of conductivity, fluidity, specific gravity, and tensile ductility, and having high moldability, lightweight, and tensile ductility while maintaining sufficient conductivity.
- the composition provides a high-quality conductive propylene-based resin molded article with good moldability and productivity.
- FIG. 1 is a schematic configuration diagram of a carbon black producing apparatus.
- FIG. 2 is a histogram of the frequency of occurrence relative to the equivalent diameter of a statue, used in the measurement of the CTAB adsorption specific surface area.
- the propylene-based resin composition of the present invention contains a propylene-based resin and carbon black.
- each component will be described.
- the propylene-based resin used in the propylene-based resin composition of the present invention includes propylene homopolymer and propylene and other olefin comonomer other than propylene (specifically, ethylene and propylene And propylene copolymers with one or more comonomers selected from the group consisting of olefins and polyenes.
- propylene-based copolymer examples include propylene 'and other ⁇ -olefin random copolymers, propylene homopolymer blocks, copolymer blocks obtained by copolymerizing ethylene and other ⁇ -olefins, or propylene and other And a propylene-based block copolymer containing a copolymer block having a high refractive index.
- the propylene homopolymer block may also include a crystalline polypropylene containing 3% by weight or less of ethylene.
- Examples of the ⁇ -olefin in the above-mentioned copolymer block include ethylene, propylene, butene, hexene, otaten, butene, 4-methyl-pentene and the like.
- a propylene-ethylene copolymer block is preferable.
- the propylene-based resin may be used alone, or two or more propylene-based resins may be used in combination as needed.
- the propylene resin preferably has an isotactic pentad fraction of the propylene chain of 0.960 or more, more preferably 0.980-0.995, particularly preferably 0.985-0. 995. If the isotactic pentad fraction of the polypropylene resin is less than 0.960, the resulting molded article may have reduced rigidity and heat resistance.
- the isotactic pentad fraction is defined by the method described in Macromolecules, 6, 925 (1973), that is, the isotactic pentad unit in pentad units in a polypropylene molecular chain measured by a method using 13 C-NMR. Rate.
- the isotactic pentad fraction is the fraction of propylene monomer units at the center of a meso-linked chain of five propylene monomer units connected.
- the assignment of peaks was performed based on the method described in Macromolecules, 8, 687 (1975). Specifically, the isotactic pentad unit is measured as the mmmm peak intensity fraction of the total absorption peak in the methyl carbon region of the 13 C-NMR ⁇ vector.
- the isotactic pentad fraction controls the amount of electron donor (external and Z or internal donor) added to the polymerization catalyst and, in addition, prevents the loss of the electron donor from the polymerization catalyst during these polymerization processes. Prevention can be adjusted.
- the content of Orefi Nkomonoma other than propylene in the propylene-based ⁇ consisting propylene copolymer is generally 0.1 1 50 weight 0/0, preferably 0. 2 30 wt 0/0, Particularly preferably, it is 0.3 to 20% by weight. If the comonomer content is less than 0.1% by weight, the effect as a propylene-based copolymer may not be able to be exhibited, unlike the propylene homopolymer, and if it exceeds 50% by weight, the handling properties will decrease. There are cases.
- the type of comonomer is arbitrary. Specific examples include ethylene, olefins having 412 carbon atoms, polyene, and the like.
- the propylene-based resin used in the present invention includes, among others, a propylene homopolymer block, a copolymer block obtained by copolymerizing ethylene with another haloolefin, and propylene and another polyolefin. And a propylene-based block copolymer containing a copolymer block selected from the group consisting of: Among them, a propylene-based block copolymer containing an ethylene-a-olefin copolymer block is preferred, and a propylene-ethylene block copolymer containing a propylene-ethylene copolymer block is particularly preferred.
- the carbon black blended in the propylene-based resin composition of the present invention is mainly composed of ethylene ' ⁇ - Selective olefin copolymer Disperses selectively in the block.
- carbon black is unevenly distributed in the ethylene ' ⁇ -olefin polymer block uniformly or non-uniformly dispersed in the propylene homopolymer block, and forms a double bar correlation form.
- a conductive network of carbon black is easily formed as compared with the single bar correlation mode in which carbon black is uniformly dispersed throughout the matrix polymer.
- good conductive performance can be achieved even with a small amount of carbon black, and the conductivity of the polypropylene resin composition and various physical properties such as lightness, fluidity, and tensile elongation can be improved. Improves balance.
- the lower limit of the MFR of the propylene homopolymer block is preferably 20 gZlO, more preferably 60 gZlO, still more preferably 80 gZlO, and the upper limit is preferably 300 gZlO, more preferably 200 gZlO.
- the content is 150 gZlO, particularly preferably 130 gZlO.
- the propylene chain of the propylene homopolymer block preferably has an isotactic pentad fraction of 0.960 or more, more preferably 0.980-0.995, and particularly preferably 0.985-0.995. is there. If the propylene chain isotactic pentad fraction of the propylene homopolymer block is less than 0.960, the resulting molded article may have reduced rigidity and heat resistance.
- the copolymer block obtained by copolymerizing ethylene and another a- olefin preferably has an ethylene content of 15 to 60% by weight, more preferably 20 to 55% by weight, and still more preferably 25 to 55% by weight.
- the lower limit of the MFR of the copolymer block is preferably 0.001 g / 10 min, more preferably 0.005 gZlO, still more preferably 0.3 g OlZZO, particularly preferably 0.3 gZlO.
- the upper limit is preferably 6 gZlO, more preferably 5 gZlO, and even more preferably 4 gZ10 min.
- the copolymer block obtained by copolymerizing propylene with another one-component olefin preferably has a propylene content of preferably 40 to 85% by weight, more preferably 45 to 80% by weight, and still more preferably 50 to 75% by weight.
- the lower limit of the MFR of the copolymer block is preferably 0.001 g / 10 min, more preferably 0.005 gZ10 min, still more preferably 0.3 OlgZ10 min, and particularly preferably 0.3 gZ10 min.
- the upper limit is preferably 6 gZ10 minutes, more preferably 5 gZ10 minutes, and further preferably 4 gZ10 minutes.
- the fluidity, impact resistance, tensile ductility, etc. of the propylene-based resin composition may decrease.
- the coating adhesion, impact resistance, tensile ductility, etc. of the propylene-based resin composition may be reduced. If the ethylene content in the copolymer block deviates from the above range, the dispersibility of the block component in the propylene resin composed of the propylene copolymer decreases and the glass transition temperature rises. In some cases, the low-temperature ductility and conductivity-imparting efficiency of the propylene-based resin composition may decrease.
- the MFR of this propylene-based block copolymer is 5 to 300 gZ10 minutes, and an appropriate MFR range can be set according to the molding method.
- the lower limit is preferably 10 gZlO min, more preferably 20 gZlO min
- the upper limit is preferably 280 gZlO min, more preferably 250 gZlO min.
- the amount is 120 gZlO minutes, most preferably 110 gZlO minutes.
- the lower limit of the MFR is preferably 10 gZl0 min, more preferably 20 gZlO min, and the upper limit is preferably 300 gZl0 min, more preferably 200 gZlO min, more preferably 150 gZl0 min, and extrusion molding.
- the lower limit of the MFR is preferably 5 gZ10 minutes, and the upper limit is preferably 30 gZ10 minutes, more preferably. Or 25 gZ for 10 minutes, more preferably 20 gZ for 10 minutes.
- the propylene-based resin composition obtained using the same impairs the balance between the MFR and the conductivity. In some cases, both values do not show good values, for example, when the performance of any of them is deteriorated.
- the MFR of the propylene homopolymer block, the copolymer block, and the propylene block copolymer can be controlled by a conventionally known method, for example, by controlling the hydrogen concentration in the polymerization reaction system,
- a melt-kneading apparatus such as an extruder
- the molecular chain may be cut using an organic peroxide.
- the ethylene content in the copolymer block is controlled, for example, by controlling the monomer concentration ratio between ethylene and ⁇ -olefin during the polymerization of the copolymer block.
- the gas pressure of each monomer may be appropriately adjusted in consideration of the polymerization temperature, catalytic performance, and the like.
- the amount of the propylene homopolymer block and the amount of the copolymer block in the propylene-based block copolymer are defined as the continuous phase (matrix phase) of the propylene homopolymer block as a propylene-based resin. It is preferred that the polymer blocks be selected to be in the dispersed phase!
- the lower limit of the amount of the propylene homopolymer block in the propylene-based block copolymer is preferably 50% by weight, more preferably 55% by weight, more preferably 60% by weight, and the upper limit is preferably 99% by weight. preferably 97 wt%, more preferably 95 wt%, more preferably 90 weight 0/0, more preferably 80 weight 0/0.
- the amount of the propylene homopolymer block preferably 50 to 99 wt%, more preferably 55- 85 wt%, more preferably 60- 80 weight 0/0.
- the lower limit of the amount of the ethylene-propylene copolymer block is preferably 1% by weight, more preferably 3% by weight, more preferably 5% by weight, more preferably 10% by weight, and most preferably 20% by weight.
- the upper limit is preferably 50% by weight, more preferably 45% by weight, more preferably 40% by weight.
- the amount of the copolymer block in the propylene-based block copolymer is adjusted by controlling the ratio of the polymerization amount of the propylene homopolymer portion to the polymerization amount of the copolymer portion by the polymerization time and the like. Can be.
- the content of this copolymer block is determined by a conventionally known method. Thus, it can be determined, for example, by a conventional method such as an infrared spectroscopy method, a 13 C-NMR method, and a heating and elution fractionation method.
- the propylene-based resin used in the present invention can be produced by any conventionally known polymerization method. Specific examples include a gas phase polymerization method, a bulk polymerization method, a solution polymerization method, and a slurry polymerization method. In these reactions, the polymerization may be carried out by batch polymerization in one reactor or continuous polymerization in which a plurality of reactors are combined. Specifically, propylene alone or copolymerization of propylene and ⁇ -olefin can be carried out continuously from a single tank to a plurality of tanks.
- a crystalline propylene portion is polymerized by copolymerizing propylene alone or with a trace amount of ethylene, and then random copolymerization of ethylene with other ⁇ -olefin or propylene and other a-olefins. It is preferable to form a copolymer portion by random copolymerization with a polymer.
- a large amount of hydrogen is introduced into the reaction system to increase the hydrogen partial pressure in the reaction system. Is preferred.
- the polymerization catalyst for producing a propylene homopolymer or a propylene-based block copolymer used in the present invention is a polymer having the above-mentioned physical properties (MFR and isotactic pentad fraction).
- MFR and isotactic pentad fraction There is no particular limitation as long as it can be manufactured.
- ZN catalyst Ziegler-Natta catalyst
- a highly stereoregular catalyst or a specific meta-mouth catalyst can be used.
- Such a highly stereoregular catalyst includes a solid component (a component) and an organoaluminum compound (b component), each of which requires titanium, magnesium, halogen and a specific electron donating compound, and an electron as an optional component.
- a co-catalyst (b ′ component) such as clay mineral or the like and a so-called metallocene catalyst which is powerful are used.
- Specific electron donors of the solid component (a component) of the ZN catalyst include polycarboxylic esters such as silicates, substituted succinates, phthalates and tartaric esters, and cellosolve acetate. , Phthalic halides, diethers, organic alkoxy Silicon compounds and the like are preferably used.
- organoaluminum compound (component b) in the ZN catalyst a general formula R 1 A1X m 3-
- R 1 is a hydrocarbon group having 11 to 12 carbon atoms
- X is a halogen
- m is a number of 113.
- trialkylaluminums such as trimethylaluminum, triethylaluminum, triisobutylaluminum, dimethylaluminum chloride, alkylaluminum halides such as ethylaluminum chloride and ethylaluminum sesquichloride, and alkylaluminum hydrides such as getylaluminum hydride, etc.
- alumoxanes such as methylalumoxane and butylalumoxane can be used.
- the electron-donating conjugate (component (c)) as an optional component in the ZN catalyst includes t-butyl-methyldimethoxysilane, t-butyl-methyl-diethoxysilane, cyclohexylmethyldimethoxysilane, dicyclopentyldimethoxysilane.
- General formula R 2 R 3 Si (OR 4 ) such as silane or bis (getylamino) dimethoxysilane (wherein R 2 has 3 to 20, preferably 4 carbon atoms)
- R 3 is 1 one 20 carbon atoms, preferably 1 one 10 branched or straight chain, or represents an aliphatic hydrocarbon residue or nitrogen-containing aliphatic hydrocarbon residue of a cyclic
- R 4 Represents an aliphatic hydrocarbon residue having 1-10 carbon atoms, preferably 1-14
- n is a number of 1-3.
- 1,3-diethers having 2,2 substituents such as 2,2-diisopropyl-1,3-diether, 2,2-diisobutyl-1,3-diether, and butyl phthalate
- polyvalent carboxylic esters such as octyl phthalate, dibutyl 1,2-diisopropylsuccinate, 1-isopropyl, and dibutyl 1-methoxytartrate. It is also possible to use a plurality of these in combination.
- a specific organic alkoxysilicon compound represented by the following formula a specific organic alkoxysilicon compound in combination, 2,2-substituted specific 1,3-diethers, 2,2-substituted specific 1,3-ge Teres, 2,2-substituted 1,3-diethers and the specific organosilicon alkoxylate conjugate represented by the above formula, or 1,2-disubstituted succinate / phthalate
- a combination of a carboxylic acid diester derivative such as the above, and a combination of the carboxylic acid diester derivative and the organosilicon alkoxylated compound represented by the above general formula.
- meta-mouth catalyst examples include (1) those having a carbon bridge, (2) those having a silicon bridge, (3) those having a germane bridge group, and Alternatively, a group 4 transition metal compound having unsubstituted cyclopentadiene, indene, fluorene, or azulene as a ligand may be used.
- those having a carbon crosslinking group include ethylene bis
- those having a silicon cross-linking group include dimethylsilylenebis (2-methyl-4-phenylindur) zirconium dichloride, diphenylsilylene (2-ethyl-4-phenylindur) zirconium dichloride, dimethylsilylene Bis (2-isopropyl 4- (3,5-diisopropylphenyl) indur) zirconium dichloride, dimethylsilylenebis (2-propyl-4-phenanthrylindur) zirconium dichloride, silafluorene bis (2-ethylethyl-4 (4 t Butylphenyl) indur) zirconium dichloride, dimethinolesilylenebis (2-ethyl 4- (4-chlorophenol) azul-le) dinoleco-dimethyldichloride, dimethylsilylenebis (2-ethylethyl 4 -— (4 t -Butyl-3 Cloth mouth) Azulenyl
- a compound in which the silicon-crosslinked silylene of the above (2) is replaced with germylene is used.
- Compounds obtained by replacing zirconium with hafnium are exemplified as such as suitable compounds.
- suitable compounds include dichloride and other halides and disulfides substituted with a methyl group, isobutyl group, phenol group, hydride group, dimethylamide, getylamide group and the like.
- the co-catalyst (b 'component) used for the meta-mouth catalyst includes (1) an organoaluminum oxy conjugate, (2) a Lewis acid, (3) an ionic conjugate, and (4) Clay minerals and the like can be used.
- organoaluminoxy compounds include methylalumoxane, isobutylalumoxane, methylisobutylalumoxane, aluminum tetrabutylisobutylbutylate, methylaluminum bispentafluorophenoxide, and getylaluminum-dimethylpentane Fluorophenoxide and the like.
- a substituent such as a tyl group and may be a fuel group or a fluorine atom.
- a substituent such as a tyl group and may be a fuel group or a fluorine atom.
- tolfluoroborane triphenylporan, tris (4fluorophenyl) borane, tris (3,5-difluorophenyl) borane, tris (4fluoromethylphenyl) borane ) Borane, tris (pentafluorophenol) borane, tris (p-tolyl) borane, tris (o-tolyl) borane, tris (3,5-dimethylphenyl) borane and the like, Inorganic compounds such as magnesium chloride and aluminum chloride are also exemplified.
- Examples of the (3) ionic compound include a trialkyl-substituted ammonium salt, an N, N-dialkylammonium salt, a dialkylammonium salt, and a triarylphosphonium salt. be able to.
- examples of the trialkyl-substituted ammonium salt include triethylammoniumtetra (phenyl) borate, tri (n-butyl) ammonium-tetra (phenyl) borate and tri (n-butyl) borate.
- Ammonium tetrakis (pentafluorophenyl) borate dimethylayudiumtetrakis (pentafluorophenyl) borate, dimethylaniliniumtetrakis (pentafluorophenyl) aluminate, etc.
- dialkylammonium salts include di (1-propyl) ammoniumtetrakis (pentafluorophenyl) borate, dicyclohexylammonium-tetramethylene (phenyl) borate, and the like.
- triphenylcarbenyltetrakis (pentafluorophenol) borate triphenylcarbumetetraxyl (pentafluorophenyl) aluminate, Fuerothem Tetra (Pentafluoro- B) borate and the like.
- clay minerals examples include montmorillonite, myriki, teolite, hectorite, modified products thereof treated with acid and base, and composites with other inorganic oxides. You.
- the effect of the composition of the present invention is particularly remarkable in a co-catalyst using a clay mineral.
- Component (a) is used in an amount of 0.01 to 100000 mol ppm based on propylene fed to the reactor.
- the amount of the component (b) used is within the range of 0.1 to 100 mol. Ppm, preferably 1 to 1000 mol. Ppm, and more preferably 10 to 300 mol. Ppm with respect to propylene fed to the reactor.
- the amount of component (c) used is in the range of 0 to 100 mol. Ppm, preferably 0.1 to 50 mol. Ppm, and particularly preferably 0 to 20 mol. Ppm, based on propylene fed to the reactor.
- the component (a ′) and the component (b ′) in the case of the meta-mouthed catalyst are such that the amount of the component (a ′) used is 0.0001—
- the amount of lOOmol.ppm and component (b,) used is generally 10-lOOOOO (molZmol) for component (a,).
- the carbon black used in the present invention is a carbon black having a graphite structure in a surface layer which is different from carbon having an amorphous structure and extremely poor conductivity, which is used as a coloring or filling compounding agent. Furthermore Contact to the present invention, carbon black used Te as features on its structure, 24M4DBP absorption of 130 cm 3/100 g or more, 1500 ° dehydrogenation of CX 3 0 min 1. 2MgZg below, the crystallite size Lc is It satisfies the requirement of 10-17A at the same time.
- the nitrogen adsorption specific surface area is 150 to 300 m 2 Zg
- the DBP absorption capacity is 50 to 400 cm 3 Z100 g
- the average particle size is 14 to 24 nm
- the CTAB adsorption specific surface area is 120 to 220 m 2 Zg. .
- the nitrogen adsorption specific surface area, DBP absorption amount, dehydration amount, crystal size, CTAB adsorption specific surface area, 24M4DBP absorption amount (compressed DBP absorption amount) of carbon black used in the present invention Definition of physical properties such as average particle size, DZ24M4DBP, density of oxygen-containing functional groups, etc.
- the nitrogen adsorption specific surface area of carbon black is an index value of the primary particle diameter of carbon black, and the larger the nitrogen adsorption specific surface area, the smaller the primary particle diameter.
- the smaller the primary particle size of carbon black the better the conductivity of the resulting propylene-based resin composition, but the lower the fluidity.
- a propylene-based resin composition obtained by using a carbon black having a nitrogen adsorption specific surface area of 150 to 300 m 2 Zg, preferably 200 to 290 m 2 Zg, more preferably 204 to 288 m 2 Zg. Can satisfy both conductivity and fluidity.
- DBP absorption (cm 3 / 100g) and 24M4DBP absorption amount (cm 3 / 100g) be measured in accordance with ⁇ your IS K6217.
- carbon black forms secondary particles composed of a chain called a unique structure in which primary particles are connected in a grape cluster. Since DBP (dibutyl phthalate) is absorbed in the voids of this grape cluster, DBP absorption and 24M4DBP absorption are important indicators of the strength of black carbon.
- DBP dibutyl phthalate
- the carbon black used in the present invention has a 24M4DBP absorption of 130 cm 3 Zl00 g or more, preferably 140 cm 3 Zl00 g or more, in order to improve the conductivity and fluidity of the obtained propylene-based resin composition. It is more preferably 145 cm 3 Z100 g or more, preferably 260 cm 3 Z100 g or less, more preferably 200 cm 3 Z100 g or less, further preferably 160 cm 3 Z100g or less.
- the carbon black used in the present invention preferably has a DBP absorption of 150 cm
- 3Zl00g or more more preferably 155cm 3/100 g or more, preferably 400cm 3 Zl00g hereinafter, 250cm 3 Zl00g below, 230cm 3 Zl00g less, 210cm 3 Zl00g below.
- the conductivity of the propylene-based resin composition may be reduced. Conversely, if the absorption amount is too large, the propylene-based resin composition may be reduced. May decrease the fluidity of the resin.
- the carbon black-containing propylene-based resin composition as a characteristic of the carbon black used, a part of the bond of the structure is broken by applying pressure as compared with the DBP absorption amount.
- the measured 24M4DBP absorption is preferred as an index of conductivity under conditions where the energy (shear) during kneading is applied.
- dehydrogenation amount The amount of dehydrogenation of carbon black at 1500 ° C for 30 minutes (hereinafter, simply referred to as “dehydrogenation amount”) is determined by heating carbon black at 1500 ° C for 30 minutes in a vacuum and generating hydrogen in the gas generated during that time. It is a quantity and is specifically determined as follows.
- the dehydrogenation amount of the carbon black used in the present invention is 1.2 mgZg or less, preferably 1.0 mgZg or less, more preferably 0.8 mgZg or less, so that the propylene-based resin It is possible to increase the conductivity of the object.
- the dehydrogenation amount of carbon black is preferably as low as 1.2 mgZg or less, but the lower limit is generally 0.1 mgZg or more for reasons such as industrial economy.
- the dehydrogenation amount is more than 1.2 mgZg, the crystal development near the surface of the carbon black will be insufficient, and the acidic functional group will be easily added to the surface in the granulation drying step of the carbon black and the like.
- a resin composition When a resin composition is used, its conductivity may be reduced.
- a carbon black having a crystallite size Lc of 10 to 17 A, preferably 11 to 16 A is used.
- the specific range it is possible to increase both the conductivity and the fluidity of the obtained propylene-based resin composition. If the crystallite size Lc is too large, the conductivity of the propylene-based resin composition may decrease, and if the crystallite size Lc is too small, sufficient conductivity may not be obtained. .
- the average particle size of the carbon black is determined by a transmission electron microscope. Specifically, a carbon black sample is dispersed in chloroform using a 150 kHz, 0.4 kW ultrasonic disperser for 10 minutes to prepare a dispersion sample, which is sprinkled and fixed on a carbon-reinforced support film. This was photographed with a transmission electron microscope, and in an image magnified 50,000 to 200,000 times, the particle size of 1,000 or more carbon black particles was randomly measured using an Endter apparatus, and the average value was taken as the average particle size. did.
- the average particle size (average particle size by transmission electron microscope) of the carbon black used in the present invention is arbitrary, but is preferably 14 to 24 nm, particularly preferably 15 to 18 nm. . If the average particle size is too small, the dispersibility in the propylene-based resin composition may decrease, and if it is too large, the conductivity of the propylene-based resin composition may decrease.
- the CTAB adsorption specific surface area of carbon black is preferably set to 120 to 220 m 2 Zg, particularly preferably to 150 to 200 m 2 Zg.
- the specific range both the conductivity and the fluidity of the propylene-based resin composition can be increased. If the CTAB specific surface area is too small, the conductivity may decrease, while if it is too large, the dispersibility in the propylene resin composition may decrease.
- the ratio of the Stokes mode diameter (D) to the 24M4DBP absorption (DZ24M4DBP) is 0.
- the storage mode diameter (D) and storage mode half width (D) are mod 1/2 by the following measurement method.
- strike one task corresponds A histogram of the frequency of occurrence relative to the diameter (however, in Comparative Examples 9 and 10 described below, the rotation speed was 4000 rpm and the true specific gravity was 1.84 g / cm 3 ). From the peak A of the histogram, draw a straight line B parallel to the Y axis, and let C be the intersection with the X axis of the histogram. At this time, the force force diameter at C becomes the force mode diameter (D). Also, with the middle point of the straight line B as F, draw a straight line G through F and parallel to the X axis. Line G intersects the histogram distribution curve at two points D and E. At this time, the absolute value of the difference between the status diameters at D and E is the storage mode half width (D).
- carbon black mod wherein D / 24M4DBP is in the range of 0.6 to 0.9 is further used.
- carbon black is composed of secondary particles (aggregates) in which multiple primary particles are connected, and the 24 M4DBP absorption is used as an index of the degree of development of the aggregate structure (structure).
- the Stokes diameter is known as another index for measuring the characteristics of carbon black.
- the Stokes diameter is generally the diameter (mode diameter; D) determined by centrifugal sedimentation (DCP) by regarding the carbon black aggregate as a pseudo-sphere conforming to the Stotas law, and As a distribution index, half of D The price range (D) is used.
- D is the same carbon black since the development of the char is not determined uniquely.
- the conductive resin composition / 24M4DBP value of carbon black within the specified range, the conductive resin composition
- D Z24M4DBP indicates the structure development of carbon black.
- CO generated amount (1500 ° C X 30 minutes)
- CO generated amount (1500 ° C X 30 minutes)
- CO generated amount (1500 ° C X 30 minutes)
- the generated amount of each obtained gas is converted into / z molZg, and the density of oxygen-containing functional groups is determined by the following equation.
- Oxygen-containing functional group density ( ⁇ mol / m 2 )
- the density of oxygen-containing functional groups is preferably 3 ⁇ molZm 2 or less.
- Oxygen-containing functional group density ( ⁇ mol / m 2 )
- Carbon black has a certain amount of functional group containing oxygen on its surface. Heating this generates carbon monoxide (CO) and carbon dioxide (CO 2).
- CO carbon monoxide
- CO 2 carbon dioxide
- a carbonyl group ketone, quinone, etc.
- CO is mainly generated by decomposition, and CO is also generated if the carboxyl group and its derivatives (ester, ratatone, etc.) are present. In other words, the amount of gas generated must be determined.
- the amount of the functional group present on the surface of the carbon black can be estimated.
- these functional groups have traditionally used values based on the amount of gas generated per weight of carbon black. In other words, it is a conventional belief that the amount of functional groups relative to the weight of carbon black affects conductivity. Met.
- the present inventors have found that the amount of these functional groups is not a numerical value per weight of carbon black, but rather a concept of conductivity. It has been found that the number per unit surface area is effective for the conductivity of the resin composition and, consequently, the compatibility between the conductivity and the fluidity.
- the oxygen-containing functional group density indicates the amount of functional groups containing oxygen per unit surface area of carbon black
- this numerical value is preferably low.
- the conductivity of the resin composition containing carbon black decreases due to vigorous reasons. The lower the value, the better from the viewpoint of conductivity. However, if the value is too low, as described above, the dispersibility may be reduced, and the conductivity or fluidity may be deteriorated. Is disadvantageous. Therefore, the density of oxygen-containing functional groups is preferably 0.1 ⁇ molZm 2 or more .
- the method for producing carbon black used in the present invention is arbitrary, and examples thereof include an oil furnace method, an acetylene method, and an activation method.
- the oil furnace method is preferable because it can be manufactured at low cost and with good yield.
- FIG. 1 shows an example of an apparatus for producing carbon black used in the present invention.
- This device is a carbon black production device based on the oil furnace method. It is a first reaction zone A that burns fuel to generate a high-temperature combustion gas stream, and is connected downstream to introduce a carbon black raw material.
- a second reaction zone B provided with a nozzle, and a third reaction zone C connected downstream thereof and provided with a nozzle for supplying cooling water or the like into the furnace to stop the carbon black generation reaction are included.
- a fuel introduction nozzle F is used to introduce fuel in the form of spray, which is then introduced into a combustion air introduction nozzle G It is mixed with powerful combustion air and burned to obtain a hot combustion gas stream.
- the temperature of the combustion gas stream is around 1300-2000 ° C.
- the fuel used to generate the high-temperature combustion gas is arbitrary.
- liquid fuels such as heavy oil, light oil, gasoline, and kerosene, and gaseous fuels such as natural gas, propane, and hydrogen can be used.
- the generated high-temperature combustion gas flow passes through the gradually converging shape of the manufacturing furnace, thereby increasing the gas flow velocity and improving the turbulent energy in the furnace.
- Examples of the carbon black raw material introduced in the second reaction zone B include coal hydrocarbons such as creosote oil and petroleum hydrocarbons such as ethylene bottom oil.
- the particle size (primary particle size) and structure of carbon black can be adjusted by adjusting the position and amount of carbon black material introduced.
- the carbon black generated in the second reaction zone B is brought into contact with cooling water or the like in the third reaction zone C and rapidly cooled, thereby stopping the carbon black generation reaction. Thereafter, the gas and carbon black are generally separated by a collecting device such as a bag filter or a cyclone to obtain carbon black.
- a collecting device such as a bag filter or a cyclone to obtain carbon black.
- the obtained carbon black is subjected to a process of using water or the like as a granulating medium, granulating to about lmm using a pin-type wet granulator or the like, and then drying using a rotary dryer. .
- the carbon black used in the present invention that is, a carbon black having a 24M4DBP oil absorption of 130 or more, a dehydrogenation amount of 1.2 mgZg or less, and a crystallite size Lc of 10-17A
- the amount of 24M4DBP absorption and specific surface area of carbon black are set to values within a specific range
- Lc is set to a specific small value without excessively increasing, and dehydrogenation of the carbon black particle surface proceeds.
- the furnace temperature is set to 1500-2000 ° C, preferably 1,600-1800 ° C
- the residence time of carbon black in the furnace that is, the time required to move from the raw material introduction point to the reaction stop position (Fig. 1)
- the time required to move the carbon black raw material introduction position distance D and the reaction stop position distance E) is set to 40 to 500 milliseconds, preferably 50 to 200 milliseconds.
- the residence time in the furnace should be longer than 500 milliseconds and not longer than 5 seconds, preferably 11 to 13 seconds.
- the carbon black used in the present invention has a particularly low dehydrogenation amount.
- a method of setting the temperature of the high-temperature combustion gas flow in the furnace to a high temperature of 1700 ° C or higher, or a method downstream of the carbon black raw material supply nozzle It is preferable that oxygen is further introduced into the furnace to burn hydrogen and the like on the surface of carbon black, and that the heat of reaction increases the residence time at high temperatures. Such a method is preferable because crystallization near the surface of the carbon black and dehydrogenation inside the carbon black can be effectively performed.
- an ethylene-based elastomer may be blended. Since carbon black has a very high affinity for a polymer containing an ethylene unit, the carbon black blended in the polypropylene resin composition of the present invention is selectively dispersed in one component of the ethylene elastomer. As a result, carbon black is unevenly distributed in the elastomer component uniformly or non-uniformly dispersed in the propylene homopolymer block, thereby forming a double bar correlation form. In this double bar correlation form, a conductive network of carbon black is more easily formed than in a single bar correction form in which carbon black is uniformly dispersed throughout the matrix polymer.
- the ethylene-based elastomer used in the present invention is an ethylene-based elastomer obtained by copolymerizing ethylene with another aolefin.
- the a-olefin to be copolymerized with ethylene is not particularly limited, but is preferably an ⁇ -olefin having 3 to 10 carbon atoms for reasons such as compatibility with polypropylene and toughness as an elastomer.
- the ethylene-based elastomer used in the present invention is a binary copolymer obtained by copolymerizing two or more ⁇ -olefins with ethylene, even if it is a binary copolymer obtained by copolymerizing only one type of ⁇ -olefin with ethylene. It may be a polymer.
- the ethylene-based elastomer used in the present invention has an ethylene content in the copolymer of 0% by weight or more, preferably 50 to 80% by weight. If it is less than copolymerized ethylene content force in body 0 wt 0/0, although compatibility with the polypropylene becomes good, due to the adsorption properties of Kabonbu rack is lowered, since the conductivity decreases, preferably Absent. There is no particular upper limit on the ethylene content in the copolymer, but if it exceeds 80% by weight, the compatibility with polypropylene will be significantly reduced.
- the ethylene elastomer used in the present invention has an MFR of 1.0 (g / 10 minutes) or more, preferably 2.0 to 100 gZlO, more preferably 3 to 80 gZlO. If the MFR of the ethylene-based elastomer is less than 1. OgZlO, the dispersibility decreases due to an excessive viscosity ratio with polypropylene. For example, when the resin composition to be cured is formed into a molded product by, for example, injection molding, the degree of orientation of one elastomer component is reduced, and a network of conductive phases in a double bar correlation form is formed. Becomes insufficient, and as a result, the conductivity is lowered, which is not preferable.
- the density (g / cc) of the ethylene-based elastomer used in the present invention is 0.890 g / cc or less, preferably 0.885 g / cc or less. If the density exceeds 0.890 gZcc, the toughness as an elastomer is inferior, which is not preferable.
- There is no particular limitation on the lower limit of the density of the elastomer but when the density is excessively low, such an elastomer is poor in handleability such as stickiness and the productivity in producing the resin composition of the present invention. Not only that, but also the productivity is low during the production of elastomers. For this reason, for reasons such as industrial economics, it is not necessary to have an excessively low density. Generally, a density of 0.850 gZcc or more is preferable.
- the purpose of using the ethylene-based elastomer in the present invention is to realize efficient conductive performance utilizing the above-described double bar correlation form. Since the localized phase of carbon black constituting the double bar correlation form is extremely high with respect to ethylene and has an adsorption property, it is effective to use a polymer having an ethylene component. It is a target. On the other hand, the compatibility with the propylene-based resin is also an important factor from the viewpoint of the dispersibility of the carbon black localized phase.
- the present inventors have conducted intensive studies on the balance between the adsorption characteristics of carbon black and the dispersibility in propylene-based resin, and as a result, the propylene-based block copolymer having a specific structure and the propylene-based block copolymer having a specific structure have been identified. It has been found that by using an ethylene-based elastomer, it is possible to form an ideal double bar correlation form capable of exhibiting particularly high conductivity.
- the copolymer block in the propylene-based block copolymer one having a relatively low content of an ethylene component is used, and the copolymer component is used as an ethylene-based elastomer and a propylene homopolymer block.
- the copolymer component is used as an ethylene-based elastomer and a propylene homopolymer block.
- the resin composition is composed of only the propylene resin and carbon black, and the propylene resin has a specific structure. Furthermore, by blending an ethylene-based elastomer having a specific structure based on the above-mentioned concept, it is possible to realize a higher conductivity efficiency. Thus, by blending the ethylene-based elastomer, it becomes possible to cause the ethylene-based elastomer to play a role of a carbon black localized phase for developing a double bar correlation form. For this reason, the molecular weight of the copolymer block in the propylene-based block copolymer can be increased as long as the compatibility with the propylene homopolymer block does not decrease. As a result, it becomes possible to obtain a resin composition having excellent molding properties such as fluidity during injection molding, flow marks, and surface tension.
- ethylene-based elastomer When an ethylene-based elastomer is used in the present invention, one kind of ethylene-based elastomer may be blended, and if necessary, two or more kinds of ethylene-based elastomers may be blended. It is included as an embodiment constituting the fat composition.
- ethylene-based elastomer a conventionally known elastomer can be used if the above-mentioned specific structural requirements are satisfied.
- ⁇ Tuffmer '' manufactured by Mitsui Iridakusha, ⁇ Engage '' and ⁇ affiliate '' manufactured by DuPont-Walastomer, ⁇ Dynaron '' manufactured by JSR, ⁇ Idazatato '' manufactured by Etherson Mobile Chemical Co., Ltd. Can be.
- the propylene resin and the carbon black, which constitute the propylene resin composition of the present invention, are mixed in a weight ratio of propylene resin: carbon black.
- the polypropylene resin composition of the present invention further contains an ethylene elastomer.
- the mixing ratio of propylene resin: carbon black: ethylene elastomer is preferably 10-80: 2-50: 10-50, more preferably 20-75: 5-4 by weight ratio. 0: 20—40, more preferably 30—73: 7—30: 20—40. If the ratio is outside the above range, various properties such as conductivity, fluidity, rigidity, heat resistance, and light weight of the resin composition are lowered, which is not preferable.
- the propylene-based resin yarn composition of the present invention is used in the present invention to obtain the power obtained by blending the above-mentioned specific propylene-based resin and the specific strength of carbon black in a specific blending ratio.
- Carbon black is extremely excellent in dispersibility in propylene resin compared to conventionally known carbon black. Therefore, by blending within the above-mentioned mixing ratio, propylene resin having excellent balance between conductivity and tensile ductility. It can be a composition.
- the amount of MFR and carbon black, preferably oil furnace carbon black, of the propylene resin used is determined by the following relationship. Formula (It is more preferable to select and combine a combination satisfying 0.
- Y is the MFR (unit: gZlOmin) of the propylene-based resin
- X is the compounding ratio (unit: weight%) of the carbon black.
- other components may be added to the propylene resin composition of the present invention as long as the effects of the present invention are not significantly impaired.
- Such other components include talc, calcium carbonate, myc, synthetic myc, smectites such as wollastonite and montmorillonite, whiskers, glass fibers, and carbon fibers. Filaments, pigments for coloring, antioxidants such as phenolic, zeolite, and phosphorus, antistatic agents, light stabilizers such as hinderdamine, ultraviolet absorbers, various nucleating agents such as organic aluminum and talc, and dispersants , Neutralizers, foaming agents, copper damage inhibitors, lubricants, flame retardants and the like.
- the method for producing the propylene-based resin composition of the present invention is a conventionally known method without any particular limitation.
- the mixture is manufactured by mixing and melt-kneading the components.
- the propylene-based resin composition of the present invention is obtained by mixing the respective components in the above-described mixing ratio, and forming a single-screw extruder, a twin-screw extruder, a Banbury mixer, a roll mixer, a Brabender blast graph, a kneader It is obtained by kneading and granulating using an ordinary kneader such as described above.
- a continuous single-screw extruder or a twin-screw extruder is preferred, and a twin-screw extruder is most preferred from the viewpoint of productivity.
- the propylene-based resin composition of the present invention thus obtained has an excellent balance of fluidity, conductivity, and ductility, and is selected from injection molding, compression molding, injection compression molding, and extrusion molding.
- a molded article having an arbitrary shape can be obtained by the modified molding method. Of these, injection molding, injection compression molding, or extrusion molding is preferable.
- the propylene-based resin composition of the present invention has a volume resistivity value of 10 2 to 10 9 ⁇ 'cm. Volume resistivity 10 9 Omega 'exceeds cm, it can not be said to have sufficient conductivity performance, 10 2 ⁇ ' is less than cm, ⁇ to the network of the carbon black is too be firmly The fluidity of the fat composition is poor, which is not preferable.
- the propylene-based resin composition of the present invention can be used as a highly conductive material that can be molded by an injection molding method that is industrially economical, especially when the MFR force is 80 gZlO. It is useful as a molded product for various applications such as trays, electromagnetic wave shields, and electrostatic coating. When the MFR exceeds 80 gZlO, the balance between conductivity and impact resistance is poor, and when the MFR is less than lgZlO, molding defects such as short shots and burrs occur during injection molding.
- the propylene-based resin composition of the present invention is excellent in conductivity, container moldability, light weight, and mechanical properties particularly when the MFR is 0.01 to 20 (gZlO content). . For this reason, extrusion molding with excellent industrial economic efficiency and subsequent container molding methods such as vacuum molding, vacuum pressure molding, press molding, plug assist molding, and single-plate thermoforming are used. As a possible, highly conductive material, it is useful as a molded product for various uses such as IC trays, electromagnetic wave shields, and carrier tapes.
- MFR unit: g / 10min: 230 according to JIS-K7210.
- C 21. Performed with 18N load.
- volume resistivity (unit: ⁇ -cm): A 3 mm thick flat sheet (340 mm x 100 mm) is formed by injection molding, and the flat sheet is cut to a width of 20 mm in the longitudinal direction and cut. A silver paste previously dissolved in butyl acetate so that the distance between the electrodes is 90 mm (a silver paste for electron microscopy manufactured by Nissin EM Co., Ltd.) at a position 45 to 50 mm in the longitudinal direction from the center of the plate in the longitudinal direction. "Silvest P255”) is applied using a brush. The strip-shaped test piece coated with silver paste in this manner was tested for the specific resistance of the volume under an applied voltage of 10 V using an insulation resistance tester (Yokogawa Hewlett-Packard High Resistance Meter “4329A”). It was measured.
- Izod (IZOD) impact strength (unit: jZm): Measured at 23 ° C and 30 ° C according to JIS-K7110.
- Deflection temperature under load (unit: C): Measured at 0.45 MPa in accordance with JIS-K7191-2.
- Production Example 14 The propylene-based resin produced in 1-4 and “MG03B”, “MAO 4”, and “MA8” manufactured by Nippon Polypropylene Corporation were used. The physical properties of each propylene resin are as shown in Table 1.
- H / (ethylene + propylene) 0.01 control in second tank To control the molecular weight.
- the isotactic pentad fraction of the propylene homopolymer extracted from the first-stage polymerization tank was 0.986
- the MFR was 142 gZlO
- the ethylene-propylene block copolymer was also extracted from the second-stage polymerization tank.
- the MFR was 65 gZlO
- the ethylene content in the copolymer portion was 52% by weight
- the content of the copolymer component was 8% by weight.
- the hydrogen amount in the first polymerization step was 0.048 in H 2 propylene molar ratio, and the hydrogen amount in the second polymerization step was
- the amount was changed in the same manner as in Production Example 1 except that the amount was changed to 0.015 in terms of the HZ propylene molar ratio.
- a ethylene / propylene block copolymer was obtained.
- a fluidized bed gas-phase reactor having a reaction volume of 280 L was used as the first polymerization step, and the polymerization temperature was 85 ° C and the propylene partial pressure was 85%. Propylene homopolymerization was continuously performed under the condition of 22 kgZcm 2 . At this time, the solid catalyst component was continuously supplied at a rate of 1.4 gZhr, and triethyl aluminum was continuously supplied at a rate of 6.5 gZhr.
- the powder extracted from the first polymerization step is continuously sent at 19.5 kgZhr to a fluidized-bed gas-phase reactor having a reaction volume of 280 L, which is used as the second polymerization step, to continuously copolymerize propylene and ethylene.
- a fluidized-bed gas-phase reactor having a reaction volume of 280 L, which is used as the second polymerization step, to continuously copolymerize propylene and ethylene.
- 26 kgZhr of polymer was continuously extracted.
- the molecular weight was controlled by rolling.
- Got. First stage polymerization tank power The isotactic pentad fraction of the extracted propylene homopolymer is 0.986, MFR is 115 gZlO, and the ethylene propylene block copolymer MFR of the second stage polymerization tank is also The content of 35 g of ZlO, the ethylene content of the copolymer part was 37% by weight, and the content of the copolymer component was 27% by weight. [0111] (Production Example 4): PP-4
- a fluidized bed gas-phase reactor having a reaction volume of 280 L was used as the first polymerization step, and the polymerization temperature was 85 ° C and the propylene partial pressure was 85%. Under the conditions of 22 kgZcm 2 , propylene homopolymerization was continuously performed. At this time, the solid catalyst component was continuously supplied at a rate of 1.4 gZhr, and triethyl aluminum was continuously supplied at a rate of 8.5 gZhr.
- the powder extracted from the first polymerization step is continuously sent at 19.5 kgZhr to a fluidized bed gas-phase reactor having a reaction section volume of 280 L used as the second polymerization step to continuously copolymerize propylene and ethylene. went. From the second polymerization step, a polymer of 22 kgZhr was continuously extracted. The hydrogen concentration in each polymerization process
- the molecular weight was controlled by rolling.
- 1-stage polymerization tank power The isotactic pentad fraction of the extracted propylene homopolymer is 0.987, MFR is 20 gZlO, and the MFR of the polypropylene block copolymer that is also extracted from the 2-stage polymerization tank is 5.5 gZlO, copolymer part.
- Tanolek compressed talc having an average particle size of 7.8 ⁇ m (Micron White 5000SMA manufactured by Hayashi-Daisei Co., Ltd.) (hereinafter referred to as Tanolek) was used.
- Propylene-based resin, carbon black, ethylene-based elastomer and talc were blended according to the blending compositions shown in Tables 5 and 7, and 100 parts by weight of the phenol-based antioxidant (Cilba Specialty Chemicals Co., Ltd .: Irganox 1010) ) 0.1 part by weight, phosphorus antioxidant (Cilba Specialty Chemicals Co., Ltd .: Irgafos 168) 0.05 part by weight and 0.3 part by weight of calcium stearate are added, mixed and then rotated in the same direction.
- the phenol-based antioxidant Ciilba Specialty Chemicals Co., Ltd .: Irganox 1010
- phosphorus antioxidant Cilba Specialty Chemicals Co., Ltd .: Irgafos 168
- the obtained pellets were injection-molded under the conditions of a mold temperature of 40 ° C and a cylinder temperature of 220 ° C to obtain various test pieces of a propylene-based resin composition. Using the obtained test pieces, various physical properties were evaluated by the methods described above, and the evaluation results are shown in Table 6.
- a sheet having a thickness of 0.5 mm was formed under the conditions of an extrusion temperature, a die temperature of 220 ° C, a die width of 600 mm, and a lip opening of 0.8 mm, and various tests of a propylene-based resin composition were performed. It was a piece. Using the test pieces obtained, various physical properties and container moldability were evaluated by the methods described above. Table 9 shows the evaluation results.
- Example 117 The same operation as in Example 117 was performed using a sheet thickness of 0.5 mm.
- Container formability Using indirect heating type pneumatic molding machine (Cosmic molding machine manufactured by Asano Laboratories Co., Ltd.), pockets of 5cm in length, 5cm in width and 5cm in depth are arranged in 4 rows and 4 rows. A container having a shape in which a total of 16 pieces were arranged at 3 cm intervals was formed.
- the molding conditions were as follows: the upper and lower heaters 20 cm away from the sheet were heated while maintaining the temperature at 450 ° C, and the heating time was varied between 20 and 40 seconds to enable a large number of sheets with different heating conditions. A number of containers were manufactured for each material.
- ⁇ Molded product has some poor elongation (partially thin wall), but the shaping has been completed in detail.
- the propylene-based resin composition of the present invention has an excellent balance of conductivity, fluidity, specific gravity, and tensile ductility, while maintaining sufficient conductivity, and having high moldability, lightweight, and tensile ductility. For this reason, the use amount of polypropylene-based resin has increased in recent years, and it is possible to further expand the applicable range of polypropylene resin.
- applications such as large-sized parts that have been made conductive by applying a paste-form conductive material using an organic solvent or the like, application is no longer necessary, so that the process can be simplified. Since the use of harmful organic solvents is unnecessary, the technology has the potential to save energy resources and reduce harmful substances, and thus to protect the global environment. ,.
- Type Mixing ratio Type Mixing ratio Mixing ratio 230.
- Example 18 PP-4 90 CB-1 10 ⁇ 0 0 0.5 0.947 6 10 7 1380 ⁇
- Example 19 PP-4 80 CB-1 20 ⁇ 0 0 0.2 0.98 3X10 3 1520 o
- Example 20 PP-4 55 CB- 1 20 EG8200 5 20 0.1 1.102 2X 10 2 1680 ⁇
- Comparative example 12 PP-4 99 CB-1 1 ⁇ 0 0 No flow 0.904 No S flow 1680 X
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EP05709755A EP1726619A4 (en) | 2004-03-15 | 2005-02-04 | PROPYLENE RINE COMPOSITION AND MOLDING THEREOF |
CN2005800082212A CN1930233B (zh) | 2004-03-15 | 2005-02-04 | 丙烯树脂组合物及其成型体 |
US10/592,797 US7687566B2 (en) | 2004-03-15 | 2005-02-04 | Propylene resin composition and molding thereof |
JP2006510885A JP4775257B2 (ja) | 2004-03-15 | 2005-02-04 | プロピレン系樹脂組成物、及びその成形体 |
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JP2013528690A (ja) * | 2010-06-18 | 2013-07-11 | ユニオン カーバイド ケミカルズ アンド プラスティックス テクノロジー エルエルシー | 導電性オレフィンマルチブロックコポリマー組成物 |
JP2013540172A (ja) * | 2010-09-22 | 2013-10-31 | ユニオン カーバイド ケミカルズ アンド プラスティックス テクノロジー エルエルシー | 加工性が改善されたアセチレンブラック半導体シールド材料 |
JPWO2017110800A1 (ja) * | 2015-12-22 | 2018-10-11 | 住友化学株式会社 | プロピレン系重合体組成物、およびそれからなる射出成形体 |
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US8217116B2 (en) * | 2009-07-15 | 2012-07-10 | Braskem America, Inc. | Polypropylene composition for buried structures |
US20140107274A1 (en) * | 2010-12-20 | 2014-04-17 | Braskem America, Inc. | Propylene-based compositions of enhanced appearance and excellent mold flowability |
JP6092797B2 (ja) * | 2014-02-20 | 2017-03-08 | 京セラドキュメントソリューションズ株式会社 | インクジェット記録用インクセット、及びインクジェット記録方法 |
CN107207802B (zh) * | 2014-12-22 | 2020-10-09 | Sabic环球技术有限责任公司 | 聚丙烯组合物 |
CA3013027C (en) | 2016-02-01 | 2020-03-24 | Cabot Corporation | Thermally conductive polymer compositions containing carbon black |
CN110709478B (zh) | 2017-05-03 | 2022-04-19 | 卡博特公司 | 炭黑以及混有该炭黑的橡胶配混料 |
JPWO2020189500A1 (ja) * | 2019-03-20 | 2020-09-24 | ||
CN111117064B (zh) * | 2019-12-23 | 2021-11-12 | 金发科技股份有限公司 | 一种聚丙烯复合材料及其制备方法 |
CN112500644B (zh) * | 2020-11-27 | 2022-05-10 | 金发科技股份有限公司 | 一种导电聚丙烯组合物及其制备方法 |
CN113881146A (zh) * | 2021-09-18 | 2022-01-04 | 金发科技股份有限公司 | 一种耐磨高抗冲聚丙烯组合物及其制备方法和应用 |
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JP2013528690A (ja) * | 2010-06-18 | 2013-07-11 | ユニオン カーバイド ケミカルズ アンド プラスティックス テクノロジー エルエルシー | 導電性オレフィンマルチブロックコポリマー組成物 |
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JPWO2017110800A1 (ja) * | 2015-12-22 | 2018-10-11 | 住友化学株式会社 | プロピレン系重合体組成物、およびそれからなる射出成形体 |
Also Published As
Publication number | Publication date |
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CN1930233B (zh) | 2010-10-06 |
JPWO2005087863A1 (ja) | 2008-01-24 |
CN1930233A (zh) | 2007-03-14 |
US20070238828A1 (en) | 2007-10-11 |
US7687566B2 (en) | 2010-03-30 |
EP1726619A1 (en) | 2006-11-29 |
EP1726619A4 (en) | 2009-08-19 |
JP4775257B2 (ja) | 2011-09-21 |
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