WO2013108919A1 - 難燃性樹脂組成物及びその製造方法、並びにその成形体及び電線 - Google Patents
難燃性樹脂組成物及びその製造方法、並びにその成形体及び電線 Download PDFInfo
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- WO2013108919A1 WO2013108919A1 PCT/JP2013/051093 JP2013051093W WO2013108919A1 WO 2013108919 A1 WO2013108919 A1 WO 2013108919A1 JP 2013051093 W JP2013051093 W JP 2013051093W WO 2013108919 A1 WO2013108919 A1 WO 2013108919A1
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- propylene
- copolymer
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- ethylene
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- 229910052698 phosphorus Inorganic materials 0.000 description 1
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- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
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- LYBIZMNPXTXVMV-UHFFFAOYSA-N propan-2-yl prop-2-enoate Chemical compound CC(C)OC(=O)C=C LYBIZMNPXTXVMV-UHFFFAOYSA-N 0.000 description 1
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- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
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- 229940045845 sodium myristate Drugs 0.000 description 1
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 1
- 229940045870 sodium palmitate Drugs 0.000 description 1
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- WYPBVHPKMJYUEO-NBTZWHCOSA-M sodium;(9z,12z)-octadeca-9,12-dienoate Chemical compound [Na+].CCCCC\C=C/C\C=C/CCCCCCCC([O-])=O WYPBVHPKMJYUEO-NBTZWHCOSA-M 0.000 description 1
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- GGXKEBACDBNFAF-UHFFFAOYSA-M sodium;hexadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCC([O-])=O GGXKEBACDBNFAF-UHFFFAOYSA-M 0.000 description 1
- JUQGWKYSEXPRGL-UHFFFAOYSA-M sodium;tetradecanoate Chemical compound [Na+].CCCCCCCCCCCCCC([O-])=O JUQGWKYSEXPRGL-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011949 solid catalyst Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
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- 230000001629 suppression Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- 229940095068 tetradecene Drugs 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 150000003606 tin compounds Chemical class 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 238000001721 transfer moulding Methods 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 description 1
- NSBGJRFJIJFMGW-UHFFFAOYSA-N trisodium;stiborate Chemical compound [Na+].[Na+].[Na+].[O-][Sb]([O-])([O-])=O NSBGJRFJIJFMGW-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 150000003658 tungsten compounds Chemical class 0.000 description 1
- CMPGARWFYBADJI-UHFFFAOYSA-L tungstic acid Chemical class O[W](O)(=O)=O CMPGARWFYBADJI-UHFFFAOYSA-L 0.000 description 1
- 150000003682 vanadium compounds Chemical class 0.000 description 1
- PXXNTAGJWPJAGM-UHFFFAOYSA-N vertaline Natural products C1C2C=3C=C(OC)C(OC)=CC=3OC(C=C3)=CC=C3CCC(=O)OC1CC1N2CCCC1 PXXNTAGJWPJAGM-UHFFFAOYSA-N 0.000 description 1
- UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 description 1
- 229910021511 zinc hydroxide Inorganic materials 0.000 description 1
- 229940007718 zinc hydroxide Drugs 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
Classifications
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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
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
- B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- 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
- C08K3/38—Boron-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/448—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from other vinyl compounds
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
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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
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
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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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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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
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Definitions
- Propylene polymer is a material excellent in heat resistance, mechanical strength, and scratch resistance, and the molded body is used in a wide range of applications.
- a molded body obtained from a resin composition comprising general polypropylene and an inorganic filler is also excellent in heat resistance and mechanical strength, but on the other hand, it is inferior in flexibility and impact resistance. Therefore, ethylene-based copolymers have been mainly used for applications that require characteristics such as flexibility and impact resistance. However, molded articles obtained from ethylene copolymers are inferior in scratch resistance and heat resistance.
- a molded body composed of a propylene polymer and an inorganic filler (a flame retardant) is known as an electric wire or a wire harness that requires scratch resistance (Patent Document 1).
- a propylene / butene copolymer, polyethylene and an inorganic filler are blended with polypropylene (Patent Document 2).
- an ethylene / ⁇ -olefin random copolymer elastomer or a styrene elastomer is blended with a propylene polymer together with an inorganic filler (Patent Document 3).
- compositions in which polypropylene / maleic acid-modified polyethylene and metal hydrate are blended with an ethylene / vinyl acetate copolymer are known (Patent Documents 4 to 8).
- An object of the present invention is to provide a flame-retardant resin composition excellent in the balance of mechanical strength such as tensile elongation, flexibility and flame retardancy, a method for producing the same, and molding obtained using the flame-retardant resin composition
- the object is to provide a body (for example, an insulator or a sheath) and an electric wire.
- the present invention uses a combination of a copolymer of ethylene and a vinyl ester compound and a specific propylene polymer, so that metal hydroxide uptake, that is, metal hydroxide in a flame retardant resin composition can be obtained.
- metal hydroxide uptake that is, metal hydroxide in a flame retardant resin composition
- a flame retardant resin composition having good dispersibility of the product and excellent balance of tensile elongation, flexibility and flame retardancy can be obtained.
- a molded body having an excellent balance of tensile elongation, flexibility and flame retardancy can be obtained by using such a specific flame retardant resin composition.
- the present invention is also a method for producing the flame retardant resin composition, A step of producing a polymer composition (H) by melt-kneading a polymer component containing at least a copolymer of ethylene and vinyl ester (A) and a propylene-based copolymer (B); A method for producing a flame-retardant resin composition comprising a step of melt-kneading at least a polymer composition (H), a metal hydroxide (D), zinc borate (E), and powdered silicone (F) It is.
- the flame retardant resin composition of the present invention has excellent performance in the balance of tensile elongation, flexibility and flame retardancy, and can be widely used suitably for molded articles, particularly electric wires.
- the copolymer (A) of ethylene and vinyl ester used in the present invention is a polymer obtained by copolymerizing at least ethylene and vinyl ester. It may be a binary copolymer obtained by copolymerizing only ethylene and vinyl ester, and other monomers (other polar monomers) as long as the performance of the binary copolymer is not impaired. ) And a terpolymer or more copolymer obtained by copolymerization.
- vinyl ester used for the copolymer (A) include vinyl acetate and vinyl propionate. Of these, vinyl acetate is preferred.
- copolymer (A) examples include acrylic acid, methacrylic acid, maleic acid, itaconic acid, maleic anhydride, itaconic anhydride, methyl acrylate, ethyl acrylate, isopropyl acrylate, acrylic acid n-propyl, isobutyl acrylate, n-butyl acrylate, 2-ethylhexyl acrylate, methyl methacrylate, ethyl methacrylate, isobutyl methacrylate, n-butyl methacrylate, glycidyl methacrylate, dimethyl maleate, maleic acid Diethyl is mentioned.
- a small amount of carbon monoxide can be copolymerized.
- the melt flow rate of the copolymer (A) (according to JIS K7210-99, temperature 190 ° C., load 2160 g) is preferably 0.1 to 50 g / 10 min, more preferably. Is 0.5 to 10 g / 10 min.
- the copolymer (A) can be obtained, for example, by radical copolymerization of ethylene and vinyl ester under high temperature and high pressure.
- a copolymer having good randomness can be obtained.
- the propylene copolymer (B) used in the present invention is a propylene copolymer having a content of ⁇ -olefin other than propylene of 10 to 60 mol%.
- the content of ⁇ -olefins other than propylene specifically means the proportion of constituent units derived from ⁇ -olefins other than propylene in 100 mol% of all constituent units of propylene-based copolymer (B).
- the propylene copolymer (B) is typically composed of a structural unit derived from propylene and a structural unit derived from other ⁇ -olefin, and other copolymer components (other non-conjugated components). Constituent units derived from diene or the like are substantially not included.
- propylene-based copolymer (B) for example, a random copolymer or a block copolymer obtained by copolymerizing propylene and at least one olefin having 2 to 20 carbon atoms other than propylene is used. be able to.
- ⁇ -olefin having 2 to 20 carbon atoms other than propylene examples include ethylene; 1-butene, 1-pentene, 1-hexene, 4-methyl-1-pentene, 1-octene, 1-decene, Examples thereof include ⁇ -olefins having 4 to 10 carbon atoms, such as 1-dodecene, 1-tetradecene, 1-hexadecene, 1-octadecene and 1-eicocene.
- the proportion of the structural unit derived from propylene is 40 to 90 mol%, preferably 40 to 85 mol%, more preferably 40 to 80 mol%, and particularly preferably. 50 to 75 mol%. Further, the proportion of the structural unit derived from ⁇ -olefin other than propylene is 10 to 60 mol%, preferably 15 to 60 mol%, more preferably 20 to 60 mol%, particularly preferably 25 to 50 mol%. is there.
- the melt flow rate (according to ASTM D1238, temperature 230 ° C., load 2.16 kg) of the propylene copolymer (B) is preferably 0.1 to 50 (g / 10 min).
- the propylene-based copolymer (B) has a melting point measured by differential scanning calorimetry (DSC) of less than 120 ° C. or no melting point is observed, and preferably has a melting point of 100 ° C. or lower, or No melting point is observed.
- DSC differential scanning calorimetry
- that the melting point is not observed means that a crystal melting peak having a heat of crystal melting of 1 J / g or more is not observed in the range of ⁇ 150 to 200 ° C.
- the measurement conditions are as described in the examples.
- the intrinsic viscosity [ ⁇ ] of the propylene copolymer (B) measured in decalin at a temperature of 135 ° C. is usually 0.01 to 10 dl / g, preferably 0.05 to 10 dl / g.
- propylene-based copolymer (B) examples include propylene / ethylene / ⁇ -olefin random copolymer (B-1) having 4 to 20 carbon atoms, and propylene / ⁇ / olefin having 4 to 20 carbon atoms. And a random copolymer (B-2).
- these copolymers (B-1) or (B-2) for example, compatibility with crystal components contained in polypropylene (C) is exhibited, and excellent flame retardancy due to tensile elongation and flexibility.
- a resin composition is obtained.
- the copolymers (B-1) and (B-2) will be described.
- the propylene / ethylene / ⁇ -olefin random copolymer (B-1) having 4 to 20 carbon atoms is a copolymer of propylene, ethylene and at least one ⁇ -olefin having 4 to 20 carbon atoms. It is a coalescence.
- ⁇ -olefin having 4 to 20 carbon atoms examples include 1-butene, 1-pentene, 1-hexene, 4-methyl-1-pentene, 1-octene, 1-decene, 1-dodecene, -Tetradecene, 1-hexadecene, 1-octadecene, 1-eicosene. Of these, 1-butene and 1-octene are preferable.
- the copolymer (B-1) satisfies the following conditions (m) and (n).
- M The molecular weight distribution (Mw / Mn) measured by gel permeation chromatography (GPC) is 1 to 3.
- N 40 to 85 mol% of propylene-derived structural units, 5 to 30 mol% of ethylene-derived structural units, and 5 to 30 mol% of structural units derived from ⁇ -olefins having 4 to 20 carbon atoms (
- the total of the structural unit derived from propylene, the structural unit derived from ethylene, and the structural unit derived from ⁇ -olefin having 4 to 20 carbon atoms is 100 mol%, and the structural unit derived from ethylene and the number of carbon atoms.
- the total of 4 to 20 ⁇ -olefin-derived structural units is preferably 15 to 60 mol%).
- the melting point Tm measured by DSC of the copolymer (B-1) is preferably 50 ° C. or lower, or it is desirable that no melting point is observed. More preferably, no melting point is observed.
- the melting point Tm of the copolymer (B-1) is measured by DSC as follows. In the measurement, the sample was packed in an aluminum pan, heated to 200 ° C. at 100 ° C./min, held at 200 ° C. for 5 minutes, then cooled to ⁇ 150 ° C. at 10 ° C./min, and then 200 ° C. at 10 ° C./min. The temperature of the endothermic peak observed when the temperature is raised to ° C. is the melting point Tm.
- the melting point Tm is usually less than 120 ° C., preferably 100 ° C. or less, more preferably 40 to 95 ° C., and particularly preferably 50 to 90 ° C. When the melting point Tm is within this range, a molded article having an excellent balance between flexibility and strength can be obtained. Moreover, since the stickiness of the surface of a molded object is suppressed, it becomes easy to construct a molded object.
- the propylene / ⁇ -olefin random copolymer (B-2) having 4 to 20 carbon atoms is a copolymer of propylene and at least one ⁇ -olefin having 4 to 20 carbon atoms.
- Specific examples of the ⁇ -olefin having 4 to 20 carbon atoms include those similar to the case of the copolymer (B-1). 1-butene is particularly preferable.
- the copolymer (B-2) satisfies the following conditions (a) and (b).
- the melting point Tm of the copolymer (B-2) can be measured by the same method as in the case of the copolymer (B-1).
- Such a copolymer (B-2) can be obtained, for example, by the method described in JP-A-2007-186665.
- the polypropylene (C) used in the present invention is a polypropylene having an ⁇ -olefin content other than propylene of less than 10 mol%.
- the content of ⁇ -olefins other than propylene specifically means the proportion of constituent units derived from ⁇ -olefins other than propylene in 100 mol% of all constituent units of polypropylene (C).
- Polypropylene (C) is typically composed of a propylene-derived structural unit and, if desired, a structural unit derived from an ⁇ -olefin other than propylene, and other copolymer components (other non-conjugated dienes and the like). ) -Derived structural unit is not substantially contained.
- the melting point of polypropylene (C) measured by a differential scanning calorimeter (DSC) is preferably 120 to 170 ° C., more preferably 125 to 165 ° C.
- Polypropylene (C) may have either an isotactic structure or a syndiotactic structure. However, an isotactic structure is preferable from the viewpoint of heat resistance and the like.
- polypropylene (C) a plurality of types of polypropylene can be used together as necessary.
- two or more types of polypropylene having different melting points and rigidity can be used in combination.
- Such a polypropylene (C) is, for example, a solid catalyst component containing magnesium, titanium, halogen and an electron donor as essential components, a Ziegler catalyst system comprising an organoaluminum compound and an electron donor, or a metallocene compound as a catalyst.
- a metallocene catalyst system used as a component, it can be produced by polymerizing propylene or copolymerizing propylene and other olefins.
- Metal hydroxide (D) used in the present invention is not particularly limited as long as it is a metal hydroxide. Specific examples thereof include aluminum hydroxide, magnesium hydroxide, calcium hydroxide, barium hydroxide, manganese hydroxide, zinc hydroxide, and hydrotalcite. These can be used singly or as a mixture of two or more. In particular, it is preferable to use one or more metal hydroxides selected from the group consisting of magnesium hydroxide, aluminum hydroxide, and hydrotalcite.
- magnesium hydroxide alone, a mixture of magnesium hydroxide and a metal hydroxide other than magnesium hydroxide, aluminum hydroxide alone, a mixture of aluminum hydroxide and a metal hydroxide other than aluminum hydroxide are preferred, and magnesium hydroxide Alone, aluminum hydroxide, and a mixture of magnesium hydroxide and aluminum hydroxide are more preferred.
- magnesium hydroxide there is a trade name Magnifin (registered trademark) H5IV manufactured by Albemarle.
- As commercial products of aluminum hydroxide there are trade name Hygilite (registered trademark) HS-330 manufactured by Showa Denko KK and trade name CL-303 manufactured by Sumitomo Chemical Co., Ltd.
- the average particle diameter of the metal hydroxide (D) is usually from 0.05 to 20 ⁇ m, preferably from 0.1 to 5 ⁇ m.
- the compounding ratio of the metal hydroxide (D) is 50 to 350 parts by mass, preferably 150 to 300 parts by mass with respect to 100 parts by mass in total of the components (A), (B) and (C). By setting the blending ratio within these ranges, it is possible to balance the flame retardancy, tensile elongation and flexibility of the flame retardant resin composition. In addition, in this invention, it is excellent also in the point that although the metal hydroxide (D) such as magnesium hydroxide is blended in a large amount, the workability is good and the hardness of the molded product does not become too high. Yes.
- the zinc borate (E) used in the present invention is not particularly limited, but the average particle size is preferably 5 ⁇ m or less, more preferably 3 ⁇ m or less.
- FIREBRAKE registered trademark
- FIREBRAKE registered trademark
- FIREBRAKE registered trademark
- FIREBRAKE registered trademark
- 415 FIREBRAKE
- FIREBRAKE registered trademark 500 manufactured by Hayakawa Corporation.
- the compounding ratio of zinc borate (E) is 0.1 to 50 parts by mass, preferably 10 to 50 parts by mass, with respect to 100 parts by mass in total of components (A), (B) and (C). .
- the powder silicone (F) used in the present invention is not particularly limited, but fine powder silicone is preferable. Further, it may be a powder blended with a silicone resin having a three-dimensional network structure in which structural units such as SiO 2 , RSiO 3/2 , R 2 SiO, R 3 SiO 1/2 are combined.
- R represents an alkyl group such as a methyl group, an ethyl group or a propyl group, an aromatic group such as a phenyl group or a benzyl group, or an alkyl group or an aromatic group having a vinyl group.
- powdered silicone products include the trade name DOW CORNING (registered trademark) 4-7081 RESIN MODIFIER manufactured by Toray Dow Corning Silicone Co., Ltd., and the trade name Trefil (registered trademark) manufactured by Toray Dow Corning Silicone Co., Ltd. ) F-201, F-2201, F-202, F-250, R-900, R-902A, E-500, E-600, E-601, E-506, trade names manufactured by Shin-Etsu Chemical Co., Ltd.
- DOW CORNING registered trademark
- Trefil registered trademark manufactured by Toray Dow Corning Silicone Co., Ltd.
- the blending ratio of the powdered silicone (F) is 0.1 to 50 parts by mass, preferably 0.1 to 40 parts by mass with respect to 100 parts by mass in total of the components (A), (B) and (C). is there.
- the ethylene / ⁇ -olefin copolymer (G) is not particularly limited, but a copolymer of ethylene and an ⁇ -olefin having 3 to 10 carbon atoms is preferable.
- Specific examples of the ⁇ -olefin having 3 to 10 carbon atoms include propylene, 1-butene, 1-pentene, 1-hexene, 3-methyl-1-butene, 3-methyl-1-pentene, and 3-ethyl-1.
- -Pentene 4-methyl-1-pentene, 4-methyl-1-hexene, 4,4-dimethyl-1-pentene, 4-ethyl-1-hexene, 3-ethyl-1-hexene, 1-octene, 1 -Decene.
- One of these may be used alone, or two or more may be used in combination.
- propylene, 1-butene, 1-hexene and 1-octene are preferable.
- the content of structural units derived from ethylene is 75 to 95 mol%, and the content of structural units derived from ⁇ -olefin is 5 to 25 mol%. It is preferable.
- the molecular weight distribution (Mw / Mn) of the copolymer (G) evaluated by the GPC method is preferably 1.5 to 3.5, more preferably 1.5 to 3.0, and particularly preferably 1.8 to 2.5.
- Mw represents a weight average molecular weight
- Mn represents a number average molecular weight.
- the B value As the B value is larger, the block chain of ethylene or ⁇ -olefin becomes shorter, the distribution of ethylene and ⁇ -olefin is more uniform, and the composition distribution of the copolymer rubber is narrower. Further, as the B value becomes smaller than 1.0, the composition distribution of the ethylene / ⁇ -olefin copolymer becomes wider and the handling property tends to be lowered. This B value can be obtained based on reports of JCRandall (Macromolecules, 15, 353 (1982)), J.Ray (Macromolecules, 10, 773 (1977)) and the like.
- the intensity ratio (T ⁇ / T ⁇ ) of T ⁇ to T ⁇ in the 13 C-NMR spectrum of the copolymer (G) is preferably 0.5 or less, more preferably 0.4 or less, and particularly preferably 0.3 or less.
- T ⁇ and T ⁇ are the peak intensities of CH 2 in structural units derived from ⁇ -olefins having 3 or more carbon atoms, and mean two types of CH 2 having different positions relative to the tertiary carbon as shown below. ing.
- NMR measuring apparatus for example, JEOL-GX270 manufactured by JEOL Ltd.
- Copolymers temperature 190 ° C. of (G), and the melt flow rate at a load 10kg (MFR 10), temperature of 190 ° C., a melt flow rate at a load 2.16kg load (MFR 2) ratio of (MFR 10 / MFR 2) Preferably satisfies the following relationship.
- Such an ethylene / ⁇ -olefin copolymer (G) can be obtained, for example, by copolymerizing ethylene and an ⁇ -olefin in the presence of a specific catalyst.
- a specific catalyst for example, a Ziegler catalyst or a metallocene catalyst composed of a vanadium compound and an organoaluminum compound can be used.
- a metallocene catalyst is particularly preferable.
- the concentration of component (a) in the polymerization system is usually from 0.000005 to 0.1 mmol / liter (polymerization). Volume), preferably 0.0001 to 0.05 mmol / liter (polymerization volume).
- Component (b) may be supplied in such an amount that the molar ratio of aluminum atom to transition metal (Al / transition metal) in the metallocene compound (a) in the polymerization system is 1 to 10,000, preferably 10 to 5,000. good.
- the component (c) may be supplied in such an amount that the molar ratio (c / a) of the component (c) to the component (a) is 0.5 to 20, preferably 1 to 10.
- Component (d) is usually used in an amount of 0 to 5 mmol / liter (polymerization volume), preferably 0 to 2 mmol / liter (polymerization volume).
- the reaction temperature in the copolymerization reaction is usually ⁇ 20 ° C. to 150 ° C., preferably 0 ° C. to 120 ° C., more preferably 0 ° C. to 100 ° C., and the reaction pressure exceeds 0 and is 7.8 MPa (80 kgf / cm 2). 2 , gauge pressure) or less, preferably more than 0 and 4.9 MPa (50 kgf / cm 2 , gauge pressure) or less.
- the ethylene / ⁇ -olefin copolymer (G) may be modified by grafting a vinyl compound having a polar group.
- vinyl compounds having a polar group include vinyl compounds having oxygen-containing groups such as acids, acid anhydrides, esters, alcohols, epoxies, and ethers; vinyl compounds having nitrogen-containing groups such as isocyanates and amides; And vinyl compounds having a silicon-containing group.
- the grafting amount of the vinyl compound having a polar group is usually 0.01 to 10% by mass, preferably 0.05 to 5% by mass, when the mass of the ethylene / ⁇ -olefin copolymer after grafting is 100% by mass. %.
- the flame retardant resin composition of the present invention is a composition containing the components (A) to (F) described above, and optionally the component (G) and other components as required.
- the proportion of the copolymer (A) in the total of 100% by mass of the components (A), (B) and (C) is 50 to 90% by mass, preferably 55 to 90% by mass, more preferably 55 to 85%. % By mass.
- the proportion of the propylene copolymer (B) is 5 to 50% by mass, preferably 5 to 40% by mass. If the proportion of the propylene-based copolymer (B) is too high, the flame retardancy decreases.
- the proportion of polypropylene (C) is 0 to 40% by mass, preferably 0 to 35% by mass, more preferably 0 to 30% by mass. When the proportion of polypropylene (C) is too high, flexibility, tensile elongation, and flame retardancy are reduced.
- the flame-retardant resin composition of the present invention preferably satisfies the following conditions (1) and (2).
- (1) Shore D hardness measured according to ASTM D2240 is 40-65.
- (2) The tensile breaking elongation of a 2 mm thick press sheet measured according to JIS K7113-2 is 100% or more.
- the flame retardant resin composition of the present invention particularly preferably satisfies the following condition (1a) and the condition (2).
- (1a) The Shore D hardness measured according to ASTM D2240 is 40 to 60 (more preferably 40 to 55).
- propylene / ethylene / ⁇ -olefin random copolymer having 4 to 20 carbon atoms (B-1) Is 15% by mass or more (more preferably 25% by mass or more) [total 100% by mass of components (A), (B) and (C)], or 10% by mass of copolymer (B-1).
- % Or more and polypropylene (C) is preferably 1% by mass or more [total 100% by mass of components (A), (B) and (C)].
- the flame retardant resin composition of the present invention satisfies the following condition (1b) and condition (2).
- (1b) The Shore D hardness measured according to ASTM D2240 is 45 to 65 (more preferably 55 to 65).
- the flame-retardant resin composition As the component (B), 15% of propylene / ⁇ -olefin random copolymer (B-2) having 4 to 20 carbon atoms is used. Mass% or more (more preferably 25 mass% or more) or [total of 100 mass% of components (A), (B) and (C)] or 10% by mass or more of copolymer (B-2) And polypropylene (C) is preferably 1% by mass or more [total 100% by mass of components (A), (B) and (C)].
- the proportion of the metal hydroxide (D) is 50 to 350 parts by weight, preferably 150 to 300 parts by weight, based on 100 parts by weight of the total of components (A), (B) and (C).
- the amount is preferably 200 to 280 parts by mass.
- the ratio of zinc borate (E) is 0.1 to 50 parts by mass, preferably 5 to 50 parts by mass, and more preferably 10 to 45 parts by mass.
- the proportion of the powdered silicone (F) is 0.1 to 50 parts by mass, preferably 5 to 50 parts by mass, more preferably 10 to 45 parts by mass.
- the metal hydroxide (D) which is an inorganic flame retardant, has features such as not burning itself, absorbing heat during decomposition, and releasing water molecules having a large heat capacity by decomposition.
- Zinc borate (E) has been used as a substitute for antimony oxide in recent years. It suppresses fuming and afterglow, helps to promote char formation, prevent drip, and improve electrical properties. It is used as an additive for polyolefin and the like, and may be used in combination with a hydrated metal compound.
- Powdered silicone (F) improves flame retardancy and drip, and is excellent in moldability and mold release.
- a crosslinked structure that is, a flame retardant region is formed in the vicinity of the surface and combustion can be suppressed.
- a higher level flame retardant composition can be obtained by combining with a metal hydroxide (D) that is endothermic and releases water molecules.
- the proportion is preferably 0.1 to 30 parts by mass with respect to 100 parts by mass in total of the components (A), (B) and (C). More preferably, it is 1 to 25 parts by mass, particularly preferably 3 to 25 parts by mass.
- the ratio of the total amount of the components (A) to (G) is preferably 60 to 100% by mass, more preferably 80% to 100% by mass. is there.
- the balance is, for example, other synthetic resins, other rubbers, and other additives. These are components to be blended as necessary within the range not impairing the object of the present invention.
- polyolefin waxes such as polyethylene wax and polypropylene wax, low density polyethylene, medium density polyethylene, and LLDPE comprising a copolymer of ethylene and an ⁇ -olefin having 4 to 10 carbon atoms.
- LLDPE Linear low density polyethylene
- ethylene elastomer ethylene elastomer
- styrene elastomer styrene elastomer
- Additives include, for example, antioxidants, heat stabilizers, UV absorbers, weathering stabilizers, antistatic agents, slip agents, antiblocking agents, crystal nucleating agents, pigments, dyes, lubricants, hydrochloric acid absorbers, copper damage An inhibitor. Further, flame retardant imparting agents (flame retardants, flame retardant aids) other than components (D) to (F) can be used in combination.
- flame retardants include bromine-based flame retardants; phosphorus-based flame retardants such as red phosphorus, phosphate esters, phosphate amides, and organic phosphine oxides; ammonium polyphosphate, phosphazene , Triazine, melamine cyanurate and other nitrogen flame retardants; polystyrene salt sulfonate alkali metal salts, etc .; inorganic flame retardants such as zinc stannate; silicone oils, etc. Silicone flame retardant imparting agents may be mentioned. These can be used individually by 1 type or in combination of 2 or more types.
- a compound having a triazine ring is preferable.
- Specific examples include melamine, ammelin, melam, benzguanamine, acetoguanamine, phthalodiguanamine, melamine cyanurate, melamine pyrophosphate, butylene diguanamine, norbornene guanamine, methylene dimelamine, ethylene dimelamine, trimethylene dimelamine , Tetramethylene dimelamine, hexamethylene dimelamine, 1,3-hexylene dimelamine.
- melamine cyanurate is preferable.
- the compounding amount of the compound containing a triazine ring is preferably 0.1 to 50 parts by mass, more preferably 5 to 40 parts by mass with respect to a total of 100 parts by mass of the components (A), (B) and (C). It is.
- the lower limit of these ranges is significant in that a combustion inert gas (nitrogen gas) is sufficiently generated from a compound having a triazine ring to obtain a synergistic effect with other flame retardancy-imparting agents.
- the upper limit is significant in terms of moldability and mechanical properties.
- the inorganic flame retardant imparting agent include antimony compounds such as antimony trioxide, antimony pentoxide, and sodium antimonate; zinc compounds such as zinc sulfate, zinc stannate, and zinc hydroxystannate; Iron compounds such as iron and ferric oxide, tin compounds such as metastannic acid, stannous oxide and stannic oxide; tungsten compounds such as metal salts of tungstic acid and complex oxide acids of tungsten and metalloid; zirconium series Compound; hydrotalcite. These may be surface-treated with a fatty acid or a silane coupling agent. From the viewpoint of flame retardancy, zinc compounds are preferred, and zinc stannate and zinc hydroxystannate are particularly preferred.
- the average particle size of the zinc compound is preferably 5 ⁇ m or less, more preferably 3 microns or less.
- Commercially available products of zinc stannate (ZnSnO 3 ) and zinc hydroxystannate (ZnSn (OH) 6 ) include, for example, trade names Alcanex ZS and Alcanex ZHS manufactured by Mizusawa Chemical.
- silicone flame retardant imparting agent examples include silicone resins and silicone oils.
- silicone resin examples include resins having a three-dimensional network structure formed by combining structural units of SiO 2 , RSiO 3/2 , R 2 SiO, and R 3 SiO 1/2 .
- R represents an alkyl group such as a methyl group, an ethyl group, or a propyl group, an aromatic group such as a phenyl group or a benzyl group, or an alkyl group or an aromatic group having a vinyl group.
- silicone oils such as dimethyl silicone oil and methylphenyl silicone oil
- modified silicone oils such as epoxy modification, alkyl modification, amino modification, carboxy modification, alcohol modification, and ether modification
- dimethylpolysiloxane rubber and methylvinylpolysiloxane
- silicone rubbers such as rubber
- silicone resins such as methyl silicone resin and ethyl silicone resin.
- the Shore D hardness of the flame retardant resin composition is preferably 65 or less, more preferably 60 or less. Further, the tensile elongation (based on JIS K7113-1) is preferably 100% or more, more preferably 150% or more.
- the flame retardant resin composition can be produced by a known method. For example, each component is mixed simultaneously or sequentially into a mixer such as a Henschel mixer, a V-type blender, a tumbler mixer, or a ribbon blender and mixed, and a multi-screw extruder such as a single-screw extruder or a twin-screw extruder.
- a mixer such as a Henschel mixer, a V-type blender, a tumbler mixer, or a ribbon blender and mixed
- a multi-screw extruder such as a single-screw extruder or a twin-screw extruder.
- the flame retardant resin composition can be obtained by melt-kneading with a kneader, a Banbury mixer or the like.
- a device excellent in kneading performance such as a multi-screw extruder, kneader, Banbury mixer or the like
- a high-quality flame-retardant resin composition in which each component is more uniformly dispersed can be obtained.
- an additive for example, antioxidant
- antioxidant can also be added in the arbitrary steps as needed.
- each component is not particularly limited.
- an ethylene / vinyl ester copolymer (A), a propylene copolymer (B), polypropylene (C), and, if desired, an ethylene / ⁇ -olefin copolymer (G) are melt-kneaded in advance.
- a resin composition having a more excellent appearance and mechanical properties can be obtained.
- a resin composition does not contain a crosslinking agent in the process which manufactures a polymer composition (H) at least. It is also preferable to melt and knead a part of these polymer components and all of the metal hydroxide (D) to form a master batch, and then melt and knead. In this case, a composition having a better balance of tensile elongation, flexibility, and flame retardancy can be obtained.
- the molded body of the present invention comprises the flame retardant resin composition described above.
- the shape of the molded body is not particularly limited, and can be molded into various shapes by melt molding. Examples of the melt molding method include extrusion molding, rotational molding, calendar molding, injection molding, compression molding, transfer molding, powder molding, blow molding, and vacuum molding.
- This molded body may be a composite with another material, for example, a laminate.
- This molded body contains an inorganic filler in a high ratio and has an excellent balance of tensile elongation, flexibility, and flame retardancy, and thus can be widely used for applications such as electric wires and building materials. More specifically, for example, it is suitable for wire coating applications such as a wire insulator and a wire sheath. In particular, the scratch resistance of a molded body such as an electric wire having a cylindrical shape can be improved. A coating layer such as an electric wire insulator or electric wire sheath can be formed around the electric wire by a known method such as extrusion molding.
- PBR Polypropylene
- C Polypropylene
- MFR 230 ° C.
- MFR 0.5 g / 10 min
- hPP Metal hydroxide
- MDH Magnesium hydroxide
- E Zinc borate
- FRC-600 Zinc borate
- VW-1 is an abbreviation for Vertical Wire, and this test is one of the vertical combustion tests in the UL standard.
- VW-1 is an abbreviation for Vertical Wire, and this test is one of the vertical combustion tests in the UL standard.
- a flame was applied for 15 seconds with a gas burner, then the flame was extinguished for 15 seconds, and this was repeated 5 times, The fire must be extinguished within 60 seconds after burning. Also, while repeating this five times, the upper flag and the lower cotton must not burn.
- the surface state of the molded product was observed with the naked eye and evaluated in the following three stages. “1”: The surface is very smooth. “2”: the surface is smooth. “3”: The surface is rough.
- the flame retardant resin composition of each example has a better balance of flexibility and tensile elongation than the flame retardant resin composition of each comparative example, and flame retardancy as seen from a vertical combustion test. was also good.
- Example 9 Evaluation was performed in the same manner as in Example 1 except that the composition was changed to the composition shown in Table 3. The results are shown in Table 3.
- Example 10 Evaluation was performed in the same manner as in Example 1 except that the polymer composition (H) shown in Table 4 was first manufactured and then the other components shown in Table 4 were melt-kneaded. The results are shown in Table 3.
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Abstract
Description
重合体成分として、
エチレンとビニルエステルとの共重合体(A)50~95質量%、
プロピレン以外のα-オレフィンの含量が10~60モル%のプロピレン系共重合体(B)5~50質量%、及び、
プロピレン以外のα-オレフィンの含量が10モル%未満のポリプロピレン(C)0~40質量%
[成分(A)、(B)及び(C)の合計100質量%]
を含有し、
さらに成分(A)、(B)及び(C)の合計100質量部に対して、
金属水酸化物(D)50~350質量部、
ホウ酸亜鉛(E)0.1~50質量部、及び
粉末シリコーン(F)0.1~50質量部
を含有し、
成分(E)及び(F)の合計量に対する成分(D)の質量比[D/(E+F)]が15以下である難燃性樹脂組成物である。
少なくともエチレンとビニルエステルとの共重合体(A)及びプロピレン系共重合体(B)を含む重合体成分を溶融混練して重合体組成物(H)を製造する工程と、
少なくとも重合体組成物(H)、金属水酸化物(D)、ホウ酸亜鉛(E)及び粉末シリコーン(F)を溶融混練する工程
を有することを特徴とする難燃性樹脂組成物の製造方法である。
本発明で用いるエチレンとビニルエステルとの共重合体(A)は、少なくともエチレンとビニルエステルとを共重合して得られる重合体である。エチレンとビニルエステルのみを共重合して得られる2元系共重合体であっても良いし、この2元系共重合体の性能を阻害しない限りにおいて、他の単量体(他の極性モノマー)を併せて共重合して得られる3元系以上の共重合体であっても良い。
本発明で用いるプロピレン系共重合体(B)は、プロピレン以外のα-オレフィンの含量が10~60モル%のプロピレン系共重合体である。ここでプロピレン以外のα-オレフィンの含量とは、具体的には、プロピレン系共重合体(B)全構成単位100モル%中、プロピレン以外のα-オレフィン由来の構成単位の割合を意味する。またプロピレン系共重合体(B)は、代表的には、プロピレン由来の構成単位と、それ以外のα-オレフィン由来の構成単位からなるものであり、それ以外の共重合成分(他の非共役ジエン等)由来の構成単位は実質的に含まない。
プロピレン・エチレン・炭素原子数4~20のα-オレフィンランダム共重合体(B-1)は、プロピレンと、エチレンと、炭素原子数が4~20のα-オレフィンの少なくとも1種との共重合体である。炭素原子数が4~20のα-オレフィンの具体例としては、1-ブテン、1-ペンテン、1-ヘキセン、4-メチル-1-ペンテン、1-オクテン、1-デセン、1-ドデセン、1-テトラデセン、1-ヘキサデセン、1-オクタデセン、1-エイコセンが挙げられる。中でも、1-ブテン、1-オクテンが好ましい。
(m)ゲルパーミエーションクロマトグラフィー(GPC)により測定された分子量分布(Mw/Mn)が1~3である。
(n)プロピレン由来の構成単位を40~85モル%、エチレン由来の構成単位を5~30モル%、及び炭素原子数4~20のα-オレフィン由来の構成単位を5~30モル%含む(ここで、プロピレン由来の構成単位、エチレン由来の構成単位、及び炭素原子数4~20のα-オレフィン由来の構成単位の合計は100モル%である。また、エチレン由来の構成単位及び炭素原子数4~20のα-オレフィン由来の構成単位の合計は15~60モル%が好ましい。)。
(o)ショアーA硬度が30~90である。
(p)X線回折で測定した結晶化度が20%以下、好ましくは10%以下である。
プロピレン・炭素原子数4~20のα-オレフィンランダム共重合体(B-2)は、プロピレンと、炭素原子数が4~20のα-オレフィンの少なくとも1種類との共重合体である。炭素原子数が4~20のα-オレフィンの具体例としては、共重合体(B-1)の場合と同様のものが挙げられる。特に1-ブテンが好ましい。
(a)ゲルパーミエーションクロマトグラフィー(GPC)により測定される分子量分布(Mw/Mn)が1~3である。
(b)融点Tm(℃)と、13C-NMRスペクトル測定にて求められるコモノマー構成単位の含量M(モル%)とが、
146exp(-0.022M)≧Tm≧125exp(-0.032M)
の関係式を満たす(ただし、Tmは120℃未満、好ましくは100℃以下である)。
(c)X線回折で測定した結晶化度が40%以下、より好ましくは35%以下である。
本発明で用いるポリプロピレン(C)は、プロピレン以外のα-オレフィンの含量が10モル%未満のポリプロピレンである。ここでプロピレン以外のα-オレフィンの含量とは、具体的には、ポリプロピレン(C)の全構成単位100モル%中、プロピレン以外のα-オレフィン由来の構成単位の割合を意味する。またポリプロピレン(C)は、代表的には、プロピレン由来の構成単位と、所望によりプロピレン以外のα-オレフィン由来の構成単位からなるものであり、それ以外の共重合成分(他の非共役ジエン等)由来の構成単位は実質的に含まない。
本発明で用いる金属水酸化物(D)は、金属の水酸化物であれば特に制限されない。その具体例としては、水酸化アルミニウム、水酸化マグネシウム、水酸化カルシウム、水酸化バリウム、水酸化マンガン、水酸化亜鉛、ハイドロタルサイトが挙げられる。これらは一種を単独で、もしくは二種以上の混合物として使用できる。特に、水酸化マグネシウム、水酸化アルミニウム及びハイドロタルサイトからなる群より選ばれる一種以上の金属水酸化物を用いることが好ましい。中でも、水酸化マグネシウム単独、水酸化マグネシウムと水酸化マグネシウム以外の金属水酸化物の混合物、水酸化アルミニウム単独、水酸化アルミニウムと水酸化アルミニウム以外の金属水酸化物との混合物が好ましく、水酸化マグネシウム単独、水酸化アルミニウム、水酸化マグネシウムと水酸化アルミニウムとの混合物がより好ましい。例えば、水酸化マグネシウムの市販品としては、Albemarle社製の商品名Magnifin(登録商標)H5IVがある。水酸化アルミニウムの市販品としては、昭和電工(株)製の商品名ハイジライト(登録商標)HS-330、住友化学工業(株)製の商品名CL-303がある。
本発明で用いるホウ酸亜鉛(E)は特に制限されないが、その平均粒子径は、好ましくは5μm以下、より好ましくは3μm以下である。市販品としては、例えば、水澤化学工業(株)製の商品名アルカネックス(登録商標)FRC-500(2ZnO/3B2O3・3.5H2O)、アルカネックス(登録商標)FRC-600、早川商事(株)製の商品名Firebrake(登録商標)ZB、Firebrake(登録商標)415、Firebrake(登録商標)500がある。
本発明で用いる粉末シリコーン(F)は特に制限されないが、微粒子状の粉末シリコーンが好ましい。また、SiO2、RSiO3/2、R2SiO、R3SiO1/2等の構造単位を組み合わせた三次元網状構造を有するシリコーン樹脂がブレンドされた粉末でもよい。ここで、Rはメチル基、エチル基、プロピル基等のアルキル基、又はフェニル基、ベンジル基等の芳香族基、又はビニル基を有するアルキル基若しくは芳香族基を示す。粉末シリコーンの市販品としては、東レ・ダウコーニング・シリコーン(株)製の商品名DOW CORNING(登録商標)4-7081 RESIN MODIFIER、東レ・ダウコーニング・シリコーン(株)製の商品名トレフィル(登録商標)F-201、F-2201、F-202、F-250、R-900、R-902A、E-500、E-600、E-601、E-506、信越化学(株)製の商品名X-40-9805、KR255、KR220L、KR282、KR211、信越化学(株)製の商品名シリコーンレジンパウダー KMP-590、KMP-701、X-52-854、X-52-1621がある。
本発明の難燃性樹脂組成物は、以上説明した各成分以外に、さらにエチレン・α-オレフィン共重合体(G)を含有しても良い。
(式中、[PE]は共重合体中のエチレンから誘導される構成単位の含有モル分率であり、[PO]は共重合体中のα-オレフィンから誘導される構成単位の含有モル分率であり、[POE]は共重合体中の全ダイアド(dyad)連鎖に対するエチレン・α-オレフィン連鎖数の割合である。)
このB値は、エチレン・α-オレフィン共重合体中のエチレンとα-オレフィンとの分布状態を表す指標である。B値が大きいほど、エチレン又はα-オレフィンのブロック的連鎖が短くなり、エチレン及びα-オレフィンの分布が一様であり、共重合ゴムの組成分布が狭いことを示している。また、B値が1.0よりも小さくなるほど、エチレン・α-オレフィン共重合体の組成分布が広くなり、取扱性が低下する傾向にある。このB値は、J.C.Randall (Macromolecules, 15, 353(1982))、J.Ray (Macromolecules, 10, 773(1977))らの報告に基づいて求めることができる。
Mw/Mn+4.7 ≦ MFR10/MFR2
上記の各関係は、成形性や材料強度の点で意義が有る。
本発明の難燃性樹脂組成物は、以上説明した成分(A)~(F)及び所望により成分(G)や必要に応じて他の成分を含有する組成物である。
(1)ASTM D2240に準じて測定したショアーD硬度が40~65である。
(2)JIS K7113-2に準じて測定した、2mm厚プレスシートの引張破断伸びが100%以上である。
(1a)ASTM D2240に準じて測定したショアーD硬度が40~60(より好ましくは40~55)である。
(1b)ASTM D2240に準じて測定したショアーD硬度が45~65(より好ましくは55~65)である。
本発明の成形体は、以上説明した難燃性樹脂組成物を含んでなる。成形体の形状は特に制限されず、溶融成形によって種々の形状に成形できる。溶融成形法としては、例えば、押出成形、回転成形、カレンダー成形、射出成形、圧縮成形、トランスファー成形、粉末成形、ブロー成形、真空成形が挙げられる。この成形体は、他の材料とのとの複合体、例えば積層体であってもよい。
実施例に用いた各成分は、以下の通りである。
エチレン-酢酸ビニル共重合体(商品名EVAFLEX EV170、三井デュポンポリケミカル(株)製)(以下「EVA」と略す)
[プロピレン系共重合体(B)]
[プロピレン・エチレン・1-ブテン共重合体(B-1)]
プロピレン・エチレン・1-ブテンランダム共重合体(MFR=8.5g/10min、Tm=観測されず、エチレン含量=14モル%、1-ブテン含量=20モル%、Mw/Mn=2.0、ショアーA硬度=38、結晶化度(WAXD法)=5%以下、mm値=90%)(特開平2007-186665号公報記載の方法で製造した)(以下「PBER」と略す)
[プロピレン・1-ブテン共重合体(B-2)]
プロピレン・1-ブテン共重合体(MFR=7g/10min、Tm=75℃、1-ブテン含量26モル%、Mw/Mn=2.1、結晶化度(WAXD法)=28%)を使用した。(特開平2007-186665号公報記載の方法で製造した)(以下「PBR」と略す)
[ポリプロピレン(C)]
アイソタクティックホモポリプロピレン(Tm=160℃、MFR(230℃)=0.5g/10min)(以下「hPP」と略す)
[金属水酸化物(D)]
水酸化マグネシウム(商品名Magnifin(登録商標)H5IV、Albemarle社製)(以下「MDH」と略す)
[ホウ酸亜鉛(E)]
ホウ酸亜鉛(商品名アルカネックス(登録商標)FRC-600、水澤化学工業(株)製)
[粉末シリコーン(F)]
ポリオルガノシロキサン(商品名DOW CORNING(登録商標)4-7081 RESIN MODIFIER、東レ・ダウコーニング・シリコーン(株)製、GPC法により測定した数平均分子量(Mn)=1000000)
[エチレン・α-オレフィン共重合体(G)]
メタロセン触媒を用いて製造したエチレン・1-ブテン共重合体(密度=885kg/m3、MFR(g/10min)190℃、2.16kg荷重下)=0.5、Mw/Mn=2.1、B値=1.05)(以下「EBR」と略す)
[重合体組成物(H)]
上記のエチレンとビニルエステルとの共重合体(A)80質量%と、上記のプロピレン・エチレン・1-ブテン共重合体(B-1)20質量%を、ラボプラストミル(東洋精機(株)製)を用いて190℃で混練し、製造した重合体組成物。
上記各成分の物性値は下記のように測定した。
(1)コモノマー(エチレン、1-ブテン)含量:
13C-NMRスペクトルの解析により求めた。
(2)メルトフローレート(MFR):
ASTM D-1238に準拠し、190℃又は230℃で2.16kg荷重下のもと測定した。
(3)融点(Tm):
DSCの発熱・吸熱曲線を求め、昇温時のΔHが1J/g以上の融解ピークの頂点の位置の温度をTmとした。測定は、試料をアルミパンに詰め、100℃/分で200℃まで昇温して200℃で5分間保持し、10℃/分で-150℃まで降温し、次いで10℃/分で200℃まで昇温する際の発熱・吸熱曲線より求めた。
(4)分子量分布(Mw/Mn):
GPC(ゲルパーミエーションクロマトグラフィー)によって、オルトジクロロベンゼン溶媒を用いて、140℃で測定した。
(5)密度:
ASTM D1505に準拠して測定した。
(6)結晶化度:
測定装置としてRINT2500(リガク社製)を用い、X線源としてCuKαを用いて測定した広角X線プロファイルの解析により求めた。
(7)ショアーA硬度:
プレス成形機によりシートを作製し、ASTM D2240に準拠して測定した。
(1)引張伸び:
JIS K7113-2に準拠し、2mmtプレスシートにて測定した。
(2)ショアーD硬度:
ASTM D2240に準拠して測定した。
(3)難燃性(垂直燃焼試験)、押出外観評価:
難燃性樹脂組成物を溶融押出機(製品名ラボプラストミル、東洋精機社製)に電線被覆用ダイスを設置したものを用いて、シリンダー温度210℃、ダイス温度230℃、スクリュー回転30rpm、押出量1.6~1.8kg/hの条件で、素線径0.18mmの軟銅線の30本撚り導体(外径約1.15mm)の周囲を1.4mm厚の難燃性樹脂組成物で被覆して、仕上がり径4.0mmの絶縁電線サンプルを得た。このサンプルを用い、UL規格 UL1581VW-1に制定される垂直燃焼試験に基づき評価した。この試験を、以下「VW-1」と略す。このVW-1は、Vertical Wireの略であり、当該試験はUL規格における垂直燃焼試験の1つである。この試験で合格と判定される為には、試料を垂直に保持した状態で、ガスバーナーにより15秒間炎を当て、次に15秒間炎を消し、これを5回繰り返して、5回のいずれの燃焼後でも60秒以内に消火しなければならない。また、これを5回繰り返している間に、上部の旗や下部の綿が燃えてもいけない。この試験に合格した電線のみ、製品に“VW-1”を表示する事ができる。各表中に示す評価結果の欄には、VW-1の合否結果と共に、着火5回中10秒~60秒で消火した回数も併せて記載した。
「1」:表面が大変平滑である。
「2」:表面が平滑である。
「3」:表面が荒れている。
表1の配合からなる組成物をラボプラストミル(東洋精機(株)製)を用いて混練した。プレス成形機によって、これを厚さ2mmのシートに成形した(加熱温度190℃、加熱時間7分、冷却条件15℃/4min、冷却速度約40℃/min)。さらに上記記載の方法で絶縁電線サンプルを作製した。これらシート及び電線サンプルについて評価した結果を表1に示す。
表1の配合からなる組成物に変更した以外は、実施例1と同様にして評価を行った。結果を表1に示す。
表2の配合からなる組成物に変更した以外は、実施例1と同様にして評価を行った。結果を表2に示す。
表3の配合からなる組成物に変更した以外は、実施例1と同様にして評価を行った。結果を表3に示す。
表4に示す重合体組成物(H)をまず製造する工程と、その後表4に示す他の成分を溶融混練する工程により製造したこと以外は、実施例1と同様にして評価を行った。結果を表3に示す。
Claims (14)
- 重合体成分として、
エチレンとビニルエステルとの共重合体(A)50~95質量%、
プロピレン以外のα-オレフィンの含量が10~60モル%のプロピレン系共重合体(B)5~50質量%、及び、
プロピレン以外のα-オレフィンの含量が10モル%未満のポリプロピレン(C)0~40質量%
[成分(A)、(B)及び(C)の合計100質量%]
を含有し、
さらに成分(A)、(B)及び(C)の合計100質量部に対して、
金属水酸化物(D)50~350質量部、
ホウ酸亜鉛(E)0.1~50質量部、及び
粉末シリコーン(F)0.1~50質量部
を含有し、
成分(E)及び(F)の合計量に対する成分(D)の質量比[D/(E+F)]が15以下である難燃性樹脂組成物。 - プロピレン系共重合体(B)が、下記条件(m)及び(n)を満たすプロピレン・エチレン・炭素数4~20のα-オレフィンランダム共重合体(B-1)である請求項1記載の難燃性樹脂組成物。
(m)ゲルパーミエーションクロマトグラフィー(GPC)により測定された分子量分布(Mw/Mn)が1~3である。
(n)プロピレン由来の構成単位を40~85モル%、エチレン由来の構成単位を5~30モル%、及び炭素数4~20のα-オレフィン由来の構成単位を5~30モル%含む(ここで、プロピレン由来の構成単位、エチレン由来の構成単位、及び炭素数4~20のα-オレフィン由来の構成単位の合計は100モル%である。)。 - プロピレン系共重合体(B)が、下記条件(a)及び(b)を満たすプロピレン・炭素数4~20のα-オレフィンランダム共重合体(B-2)である請求項1記載の難燃性樹脂組成物。
(a)ゲルパーミエーションクロマトグラフィー(GPC)により測定された分子量分布(Mw/Mn)が1~3である。
(b)融点Tm(℃)と、13C-NMRスペクトル測定にて求められるコモノマー構成単位の含量M(モル%)とが、
146exp(-0.022M)≧Tm≧125exp(-0.032M)
の関係式を満たす(ただし、Tmは120℃未満である)。 - 成分(A)、(B)及び(C)の合計100質量部に対して、さらにエチレン・α-オレフィン共重合体(G)0.1~30質量部を含む請求項1記載の難燃性樹脂組成物。
- 成分(A)、(B)及び(C)の合計100質量部に対して、
金属水酸化物(D)150~300質量部、
ホウ酸亜鉛(E)10~50質量部、及び
粉末シリコーン(F)0.1~40質量部
を含有し、質量比[D/(E+F)]が13以下である請求項1記載の難燃性樹脂組成物。 - 成分(B)を15質量%以上含有するか、または、成分(B)を10質量%以上及びポリプロピレン(C)を1質量%以上含有し[成分(A)、(B)及び(C)の合計100質量%]、さらに下記条件(1)および(2)を満たす請求項1記載の難燃性樹脂組成物。
(1)ASTM D2240に準じて測定したショアーD硬度が40~65である。
(2)JIS K7113-2に準じて測定した、2mm厚プレスシートの引張破断伸びが100%以上である。 - 成分(B)としてプロピレン・エチレン・炭素原子数4~20のα-オレフィンランダム共重合体(B-1)を15質量%以上含有するか、または、共重合体(B-1)を10質量%以上及びポリプロピレン(C)を1質量%以上含有し[成分(A)、(B)及び(C)の合計100質量%]、さらに下記条件(1a)および(2)を満たす請求項6記載の難燃性樹脂組成物。
(1a)ASTM D2240に準じて測定したショアーD硬度が40~60である。
(2)JIS K7113-2に準じて測定した、2mm厚プレスシートの引張破断伸びが100%以上である。 - 成分(B)としてプロピレン・炭素原子数4~20のα-オレフィンランダム共重合体(B-2)を15質量%以上含有するか、または、共重合体(B-2)を10質量%以上及びポリプロピレン(C)を1質量%以上含有し[成分(A)、(B)及び(C)の合計100質量%]、さらに下記条件(1b)および(2)を満たす請求項6記載の難燃性樹脂組成物。
(1b)ASTM D2240に準じて測定したショアーD硬度が45~65である。
(2)JIS K7113-2に準じて測定した、2mm厚プレスシートの引張破断伸びが100%以上である。 - 請求項1記載の難燃性樹脂組成物を製造する為の方法であって、
少なくともエチレンとビニルエステルとの共重合体(A)及びプロピレン系共重合体(B)を含む重合体成分を溶融混練して重合体組成物(H)を製造する工程と、
少なくとも重合体組成物(H)、金属水酸化物(D)、ホウ酸亜鉛(E)及び粉末シリコーン(F)を溶融混練する工程
を有することを特徴とする難燃性樹脂組成物の製造方法。 - 請求項9記載の方法で製造された難燃性樹脂組成物。
- 請求項1または10記載の難燃性樹脂組成物を含んでなる成形体。
- 電線の絶縁体又は電線シースである請求項11記載の成形体。
- 請求項11記載の成形体である電線の絶縁体及び/又は電線シースを有する電線。
- 電線が、電源コード用電線、機器用電線又は屋内配線向け電線である請求項13記載の電線。
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EP2805994B1 (en) | 2017-09-13 |
CN104053720A (zh) | 2014-09-17 |
CN104053720B (zh) | 2016-11-16 |
KR101688286B1 (ko) | 2016-12-20 |
EP2805994A1 (en) | 2014-11-26 |
JP5877209B2 (ja) | 2016-03-02 |
EP2805994A4 (en) | 2015-08-26 |
KR20140112081A (ko) | 2014-09-22 |
JPWO2013108919A1 (ja) | 2015-12-10 |
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