WO2019181379A1 - Vinyl chloride resin composition, vinyl chloride resin molded article, and laminate - Google Patents

Vinyl chloride resin composition, vinyl chloride resin molded article, and laminate Download PDF

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Publication number
WO2019181379A1
WO2019181379A1 PCT/JP2019/007062 JP2019007062W WO2019181379A1 WO 2019181379 A1 WO2019181379 A1 WO 2019181379A1 JP 2019007062 W JP2019007062 W JP 2019007062W WO 2019181379 A1 WO2019181379 A1 WO 2019181379A1
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WO
WIPO (PCT)
Prior art keywords
vinyl chloride
chloride resin
resin composition
resin molded
mass
Prior art date
Application number
PCT/JP2019/007062
Other languages
French (fr)
Japanese (ja)
Inventor
崇倫 藤原
Original Assignee
日本ゼオン株式会社
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Publication date
Application filed by 日本ゼオン株式会社 filed Critical 日本ゼオン株式会社
Priority to JP2020507459A priority Critical patent/JP7251542B2/en
Publication of WO2019181379A1 publication Critical patent/WO2019181379A1/en

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Classifications

    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/18—Slush casting, i.e. pouring moulding material into a hollow mould with excess material being poured off
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • 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
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06—Homopolymers or copolymers of vinyl chloride

Definitions

  • the present invention relates to a vinyl chloride resin composition, a vinyl chloride resin molded body, and a laminate.
  • Vinyl chloride resins are generally used in various applications because they are excellent in properties such as cold resistance, heat resistance, and oil resistance.
  • a skin made of a vinyl chloride resin molded body or a foam body such as a polyurethane foam molded body is lined on the skin made of a vinyl chloride resin molded body.
  • Automotive interior materials such as laminates are used.
  • the vinyl chloride resin molded body used as the skin is produced by molding a vinyl chloride resin composition containing a vinyl chloride resin and a plasticizer using a known molding method such as powder slush molding. (For example, refer to Patent Document 1).
  • Patent Document 1 heat resistance aging resistance is obtained by using a vinyl chloride resin composition containing 100 to 200 parts by mass of a predetermined plasticizer with respect to 100 parts by mass of a vinyl chloride resin having a predetermined average degree of polymerization. It has been reported that a vinyl chloride resin molded article having excellent resistance can be produced.
  • a vinyl chloride resin molded product used by lining a foamed product such as a polyurethane foam molded product has a low peak elastic temperature E ′′ even after the heat aging test (that is, plastic deformation). There are many components and it is excellent in energy absorption).
  • the vinyl chloride resin composition described in Patent Document 1 when it is used by being laminated with a foamed polyurethane molded article, the vinyl chloride resin molding has a sufficiently low peak top temperature of the loss elastic modulus E ′′ after the thermal aging test. It was difficult to form a body.
  • an object of the present invention is to provide a vinyl chloride resin molded product having a low peak top temperature of the loss elastic modulus E ′′ after a heat aging test when the foamed polyurethane molded product is used as a backing.
  • An object of the present invention is to provide a vinyl chloride resin composition capable of forming the vinyl chloride resin molded body and a laminate having the vinyl chloride resin molded body.
  • the present inventor has intensively studied for the purpose of solving the above problems. And when this inventor uses the vinyl chloride resin composition containing a vinyl chloride resin, a plasticizer, and an iron oxide, when using a foaming polyurethane molding backed, it is after a heat aging test. The present inventors have found that a vinyl chloride resin molded product having a low peak elastic modulus E ′′ and a low peak top temperature can be formed.
  • the vinyl chloride resin composition of this invention is (a) vinyl chloride resin, (b) plasticizer, and (c) iron. It contains an oxide.
  • a vinyl chloride resin composition containing (a) a vinyl chloride resin, (b) a plasticizer, and (c) an iron oxide is used, heat aging is caused when a foamed polyurethane molded article is used as a backing.
  • a vinyl chloride resin molded article having a low peak top temperature of the loss elastic modulus E ′′ after the test can be formed.
  • “use the foamed polyurethane molded article as a backing” for the vinyl chloride resin molded article is not particularly limited as long as the vinyl chloride resin molded article and the polyurethane foam molded article are laminated adjacently, Not only when a foamed and cured foamed polyurethane molded product is laminated on a vinyl chloride resin molded product, but also on the vinyl chloride resin molded product, a raw material liquid of the foamed polyurethane molded product (usually a liquid containing a polyol compound and a polyisocyanate).
  • a raw material liquid of the foamed polyurethane molded product usually a liquid containing a polyol compound and a polyisocyanate.
  • the content of the (c) iron oxide is 0.01 parts by mass or more and 0.8 parts by mass or less per 100 parts by mass of the (a) vinyl chloride resin. It is preferable. If the content of (c) iron oxide in the vinyl chloride resin composition is within the above range, the molding is performed while sufficiently securing the tensile elongation of the vinyl chloride resin molded body formed using the vinyl chloride resin composition. When a foamed polyurethane molded body is used as the backing, the peak top temperature of the loss elastic modulus E ′′ after the heat aging test can be further reduced.
  • the (c) iron oxide preferably has an average particle size of 0.4 ⁇ m or more and 1.2 ⁇ m or less. If the average particle diameter of (c) iron oxide in the vinyl chloride resin composition is within the above range, when the foamed polyurethane molded product is used as a backing on the vinyl chloride resin molded product, The peak top temperature of the loss elastic modulus E ′′ can be further lowered.
  • average particle diameter of iron oxide is determined by using a laser diffraction / scattering method in accordance with JIS Z8825: 2013, using “SALD-2300” manufactured by Shimadzu Corporation as a measuring instrument, and having a sample refractive index of 2 Refers to the volume average particle diameter measured under the condition of 50-0.20i.
  • the content of the (b) plasticizer is preferably 30 parts by mass or more and 200 parts by mass or less per 100 parts by mass of the (a) vinyl chloride resin. If the content of the plasticizer (b) in the vinyl chloride composition is within the above range, the tensile elongation of the vinyl chloride resin molded product obtained using the vinyl chloride resin composition is increased and foamed in the molded product. When a polyurethane molded product is used as a backing, the peak top temperature of the loss elastic modulus E ′′ after the heat aging test can be further reduced. In addition, the plasticizer migrates to the surface of the vinyl chloride resin molded product. Thus, stickiness of the surface of the molded body can be suppressed.
  • the (b) plasticizer may contain at least one of trimellitic acid ester and pyromellitic acid ester.
  • the foamed polyurethane molded body is used as a backing.
  • a vinyl chloride resin molded article having a sufficiently low peak top temperature of the loss elastic modulus E ′′ after the heat aging test can be formed.
  • the vinyl chloride resin composition of the present invention is preferably used for powder molding. If the vinyl chloride resin composition is used for powder molding, for example, a vinyl chloride resin molded article that can be used favorably as a skin for an automobile instrument panel can be easily obtained.
  • the vinyl chloride resin composition of the present invention is preferably used for powder slush molding. If the vinyl chloride resin composition is used for powder slush molding, for example, a vinyl chloride resin molded article that can be used favorably as a skin for an automobile instrument panel can be obtained more easily.
  • the vinyl chloride resin molded article of the present invention is formed by molding any of the above-mentioned vinyl chloride resin compositions.
  • the vinyl chloride resin molded product obtained by using the vinyl chloride resin composition has a low peak top temperature of the loss elastic modulus E ′′ after the heat aging test when the polyurethane foam molded product is used as a backing.
  • the vinyl chloride resin molded product of the present invention can be used for an automotive instrument panel skin.
  • the laminated body of this invention has a foaming polyurethane molding and one of the vinyl chloride resin moldings mentioned above.
  • the laminate has a vinyl chloride resin molded product portion having a low peak top temperature of loss elastic modulus E ′′ after the thermal aging test. be able to.
  • a vinyl chloride resin molded product having a low peak top temperature of loss elastic modulus E ′′ after a heat aging test can be provided.
  • the invention can provide a vinyl chloride resin composition capable of forming the vinyl chloride resin molded body, and a laminate having the vinyl chloride resin molded body.
  • the vinyl chloride resin composition of the present invention can be used, for example, when forming the vinyl chloride resin molded article of the present invention.
  • the vinyl chloride resin molded object formed using the vinyl chloride resin composition of this invention can be used for manufacture of the laminated body of this invention which has the said vinyl chloride resin molded object, for example.
  • the vinyl chloride resin molded body of the present invention can be suitably used for automobile interior materials, for example, for the skin of automobile instrument panels.
  • the vinyl chloride resin composition of the present invention includes (a) a vinyl chloride resin, (b) a plasticizer, and (c) an iron oxide, and may optionally further include other additives. And since the vinyl chloride resin composition of the present invention described above contains at least (a) the vinyl chloride resin, (b) the plasticizer, and (c) the iron oxide, the vinyl chloride resin composition If a product is used, when a foamed polyurethane molded product is used as a backing, a vinyl chloride resin molded product having a low peak top temperature of the loss elastic modulus E ′′ after the heat aging test can be formed.
  • the (a) vinyl chloride resin for example, one kind or two or more kinds of vinyl chloride resin particles can be contained, and optionally one kind or two or more kinds of vinyl chloride resin particles are further contained. be able to.
  • the vinyl chloride resin preferably contains at least vinyl chloride resin particles, and more preferably contains vinyl chloride resin particles and vinyl chloride resin fine particles.
  • the (a) vinyl chloride resin can be produced by any conventionally known production method such as suspension polymerization method, emulsion polymerization method, solution polymerization method or bulk polymerization method.
  • “resin particles” refers to particles having a particle size of 30 ⁇ m or more, and “resin particles” refers to particles having a particle size of less than 30 ⁇ m.
  • the vinyl chloride resin (a) is preferably a vinyl chloride containing a vinyl chloride monomer unit in addition to a homopolymer composed of vinyl chloride monomer units, preferably 50% by mass or more, more preferably 70% by mass or more.
  • examples thereof include a system copolymer.
  • a monomer (comonomer) copolymerizable with a vinyl chloride monomer that can constitute a vinyl chloride copolymer for example, as described in International Publication No. 2016/098344 Things can be used.
  • these components may be used individually by 1 type, and may be used combining two or more types by arbitrary ratios.
  • Vinyl chloride resin particles In the vinyl chloride resin composition, the vinyl chloride resin particles usually function as a matrix resin (base material). The vinyl chloride resin particles are preferably produced by a suspension polymerization method.
  • the average degree of polymerization of the vinyl chloride resin constituting the vinyl chloride resin particles is preferably 800 or more, more preferably 2000 or more, and preferably 5000 or less, more preferably 3000 or less. It is preferably 2900 or less, more preferably 2800 or less. If the average degree of polymerization of the vinyl chloride resin constituting the vinyl chloride resin particles is 800 or more, the physical strength of the vinyl chloride resin molded body formed using the vinyl chloride resin composition is sufficiently secured, for example, tensile elongation Can be improved.
  • the vinyl chloride resin molded product having a low peak top temperature of the loss elastic modulus E ′′ after the heat aging test and good tensile elongation can be obtained without, for example, debris scattering when the airbag is expanded and deployed. It can be suitably used as an automobile interior material such as a skin of an automotive instrument panel having a good ductility, which can break as designed, while the average degree of polymerization of the vinyl chloride resin constituting the vinyl chloride resin particles is 5000 or less. If it exists, the meltability of a vinyl chloride resin composition can be improved and the surface smoothness of the vinyl chloride resin molded object formed using the said composition can be improved. In the present invention, the “average degree of polymerization” can be measured according to JIS K6720-2.
  • the average particle diameter of the vinyl chloride resin particles is usually 30 ⁇ m or more, preferably 50 ⁇ m or more, more preferably 100 ⁇ m or more, further preferably 130 ⁇ m or more, particularly preferably 145 ⁇ m or more, and 500 ⁇ m or less. Preferably, 200 ⁇ m or less is more preferable. If the average particle diameter of the vinyl chloride resin particles is 30 ⁇ m or more, the powder fluidity of the vinyl chloride resin composition can be improved. On the other hand, if the average particle diameter of the vinyl chloride resin particles is 500 ⁇ m or less, the meltability of the vinyl chloride resin composition is improved and the surface smoothness of the vinyl chloride resin molded body formed using the composition is improved. Can do.
  • the “average particle diameter of vinyl chloride resin particles” is determined by using a laser diffraction / scattering method in accordance with JIS Z8825: 2013, using “SALD-2300” manufactured by Shimadzu Corporation as a measuring instrument, and a sample refractive index. It refers to the volume average particle diameter measured under the condition of 1.70-0.20i.
  • the content ratio of the vinyl chloride resin particles in the vinyl chloride resin is preferably 70% by mass or more, more preferably 80% by mass or more, and can be 100% by mass.
  • the content is preferably not more than mass%, more preferably not more than 90 mass%.
  • Vinyl chloride resin fine particles In the vinyl chloride resin composition, the vinyl chloride resin fine particles usually function as a dusting agent (powder fluidity improver).
  • the vinyl chloride resin fine particles are preferably produced by an emulsion polymerization method.
  • the average degree of polymerization of the vinyl chloride resin constituting the vinyl chloride resin fine particles is preferably 500 or more, more preferably 700 or more, still more preferably 800 or more, preferably 3000 or less, more preferably 2500 or less. More preferably, it is as follows. If the average degree of polymerization of the vinyl chloride resin constituting the fine particle of the vinyl chloride resin as a dusting agent is 500 or more, the powder flowability of the vinyl chloride resin composition is improved and molding obtained using the composition The tensile elongation of the body can be improved.
  • the meltability of the vinyl chloride resin composition increases, and the surface smoothness of the vinyl chloride resin molded body formed using the composition increases. Can be improved.
  • the average particle size of the vinyl chloride resin fine particles is usually less than 30 ⁇ m, preferably 10 ⁇ m or less, more preferably 5 ⁇ m or less, still more preferably 2.0 ⁇ m or less, and 1.8 ⁇ m or less. Is particularly preferably 0.1 ⁇ m or more, more preferably 1 ⁇ m or more, further preferably 1.5 ⁇ m or more, and particularly preferably 1.7 ⁇ m or more. If the average particle diameter of the vinyl chloride resin fine particles is 0.1 ⁇ m or more, for example, the powder fluidity of the vinyl chloride resin composition can be improved without excessively reducing the size as a dusting agent.
  • the “average particle diameter of the vinyl chloride resin fine particles” is determined by using a laser diffraction / scattering method according to JIS Z8825: 2013, using “SALD-2300” manufactured by Shimadzu Corporation as a measuring instrument, and a sample refractive index. 1. Refers to the volume average particle diameter measured under the condition of 60-0.00i.
  • the content ratio of the vinyl chloride resin fine particles in the vinyl chloride resin is preferably 5% by mass or more, more preferably 10% by mass or more, and preferably 30% by mass or less, More preferably, it is 20 mass% or less.
  • the content rate of the vinyl chloride resin fine particles in the vinyl chloride resin is 5% by mass or more, the powder flowability of the vinyl chloride resin composition can be improved.
  • the content of the vinyl chloride resin fine particles in the vinyl chloride resin is 30% by mass or less, the physical strength of the vinyl chloride resin molded body formed using the vinyl chloride resin composition can be increased. .
  • a plasticizer is a component which can provide a softness
  • the (b) plasticizer include the following primary plasticizer and secondary plasticizer.
  • primary plasticizers trimethyl trimellitic acid, triethyl trimellitic acid, tri-n-propyl trimellitic acid, tri-n-butyl trimellitic acid, tri-n-pentyl trimellitic acid, tri-n trimellitic acid -Hexyl, tri-n-heptyl trimellitic acid, tri-n-octyl trimellitic acid, tri-n-nonyl trimellitic acid, tri-n-decyl trimellitic acid, tri-n-undecyl trimellitic acid, trimellitic Tri-n-dodecyl acid, tri-n-tridecyl trimellitic acid, tri-n-tetradecyl trimellitic acid, tri-n-pentadecyl trimellitic acid, tri-n-hexadecyl trimellitic acid, tri-n-trimellitic
  • Linear trimellitic acid ester [Note that these trimellitic acid esters may be composed of a single compound or a mixture thereof. ]; Trimellitic acid tri-i-propyl, trimellitic acid tri-i-butyl, trimellitic acid tri-i-pentyl, trimellitic acid tri-i-hexyl, trimellitic acid tri-i-heptyl, trimellitic acid tri- i-octyl, trimellitic acid tri- (2-ethylhexyl), trimellitic acid tri-i-nonyl, trimellitic acid tri-i-decyl, trimellitic acid tri-i-undecyl, trimellitic acid tri-i-dodecyl , Trimellitic acid tri-i-tridecyl, trimellitic acid tri-i-tetradecyl, trimellitic acid tri-i-pentadecyl, trimellitic acid tri-i-hexadecyl, trimellitic acid tri-
  • the ester may be a single compound or a mixture.
  • Glycerol derivatives such as glycerol monoacetate, glycerol triacetate, glycerol tributyrate; Epoxy derivatives such as epoxy hexahydrophthalate diisodecyl, epoxy triglyceride, epoxidized octyl oleate, epoxidized decyl oleate; Polyester plasticizers such as adipic acid polyester, sebacic acid polyester, phthalic acid polyester; Etc.
  • secondary plasticizers include epoxidized vegetable oils such as epoxidized soybean oil and epoxidized linseed oil; fatty acid esters of glycols such as chlorinated paraffin and triethylene glycol dicaprylate, butyl epoxy stearate, phenyl oleate And methyl dihydroabietate.
  • the plasticizer mentioned above may be used individually by 1 type, and may be used combining two or more types by arbitrary ratios.
  • the plasticizers described above from the viewpoint of easily and satisfactorily obtaining the vinyl chloride resin composition and the vinyl chloride resin molded article, it is preferable to use at least a primary plasticizer as the plasticizer (b). It is more preferable to use a plasticizer and a secondary plasticizer in combination.
  • the plasticizer (b) trimellitic acid ester and / or pyromellitic acid ester is preferably used, and at least trimellitic acid ester is more preferably used. It is more preferable to use bean oil in combination.
  • the content of (b) plasticizer is preferably 30 parts by mass or more, more preferably 60 parts by mass or more, and 80 parts by mass or more per 100 parts by mass of (a) vinyl chloride resin. More preferably, it is 130 parts by mass or more, more preferably 200 parts by mass or less, more preferably 160 parts by mass or less, and still more preferably 140 parts by mass or less.
  • the content of the plasticizer is 30 parts by mass or more, the tensile elongation of the vinyl chloride resin molded body formed using the vinyl chloride resin composition is increased and the loss elastic modulus E ′′ after the heat aging test is increased.
  • the content of the plasticizer (b) is 200 parts by mass or less, the plasticizer moves to the surface of the vinyl chloride resin molded body, and the surface of the molded body becomes sticky. This can be suppressed.
  • the iron oxide is a component that can lower the peak top temperature of the loss elastic modulus E ′′ after the heat aging test of the vinyl chloride resin molded body formed from the vinyl chloride resin composition.
  • the iron oxide is not particularly limited, but iron (II) (FeO), triiron tetroxide (Fe 3 O 4 ), iron (III) oxide (Fe 2 O 3 ) and the like may be used. Can be mentioned. One of these iron oxides may be used alone, or two or more thereof may be used in combination at any ratio. From the viewpoint of further reducing the peak top temperature of the loss elastic modulus E ′′ after the thermal aging test of the vinyl chloride resin molded body, (c) iron oxide includes iron (III) (Fe 2 O 3 ). It is preferable to use ⁇ -iron oxide (III) ( ⁇ -Fe 2 O 3 ).
  • the average particle diameter of the iron oxide is preferably 0.4 ⁇ m or more, more preferably 0.5 ⁇ m or more, further preferably 0.55 ⁇ m or more, and 1.2 ⁇ m or less. Preferably, it is 1.1 ⁇ m or less, more preferably 1.0 ⁇ m or less, and even more preferably 0.9 ⁇ m or less.
  • the average particle diameter of the iron oxide is within the above range, it is assumed that the above-described shielding layer is formed efficiently, but the loss elastic modulus E after the heat aging test of the vinyl chloride resin molded body The peak top temperature of "" can be further reduced.
  • the content of (c) iron oxide is preferably 0.01 parts by mass or more, more preferably 0.02 parts by mass or more per 100 parts by mass of (a) vinyl chloride resin. 0.03 parts by mass or more, more preferably 0.05 parts by mass or more, particularly preferably 0.08 parts by mass or more, and preferably 0.8 parts by mass or less, The amount is more preferably 0.7 parts by mass or less, still more preferably 0.6 parts by mass or less, and particularly preferably 0.5 parts by mass or less.
  • the vinyl chloride resin composition of the present invention may further contain various additives in addition to the components described above.
  • the additive is not particularly limited and includes, for example, stabilizers such as perchloric acid-treated hydrotalcite, zeolite, ⁇ -diketone, and fatty acid metal salt; mold release agent; Sting agents; impact resistance improvers; perchloric acid compounds other than perchloric acid-treated hydrotalcite (sodium perchlorate, potassium perchlorate, etc.); antioxidants; fungicides; flame retardants; Examples thereof include fillers; light stabilizers; foaming agents; moldability control agents (silicone oil and the like); and colorants.
  • Such additives are not particularly limited, and for example, those described in International Publication No. 2016/098344 can be used.
  • the vinyl chloride resin composition of the present invention can be prepared by mixing the components described above.
  • the mixing method of the above (a) vinyl chloride resin, (b) plasticizer, (c) iron oxide, and an additive further blended as necessary is not particularly limited.
  • a method in which components other than the dusting agent containing vinyl chloride resin fine particles are mixed by dry blending, and then the dusting agent is added and mixed.
  • the temperature at the time of dry blending is not specifically limited, 50 degreeC or more is preferable, 70 degreeC or more is more preferable, and 200 degreeC or less is preferable.
  • vinyl chloride resin composition can be used suitably for powder molding, and can be used suitably by powder slush molding.
  • the vinyl chloride resin molded article of the present invention is obtained by molding the above-described vinyl chloride resin composition by an arbitrary method.
  • the vinyl chloride resin molded article of the present invention is formed using any of the vinyl chloride resin compositions described above, and includes at least (a) a vinyl chloride resin, (b) a plasticizer, and (c) iron oxidation. Therefore, even when the foamed polyurethane molding is used as a backing, the peak top temperature of the loss elastic modulus E ′′ after the heat aging test is sufficiently low. Therefore, the vinyl chloride resin molding of the present invention is performed.
  • the body can be suitably used as an automobile interior material, particularly as a skin of an automobile instrument panel.
  • the mold temperature at the time of powder slush molding is not particularly limited and is preferably 200 ° C. or higher, and preferably 220 ° C. or higher. More preferably, it is preferably 300 ° C. or less, and more preferably 280 ° C. or less.
  • the vinyl chloride resin composition of the present invention is sprinkled on a mold in the above temperature range, left for 5 seconds to 30 seconds, and then the excess vinyl chloride resin composition is shaken off, and further at an arbitrary temperature. Leave for 30 seconds to 3 minutes. Thereafter, the mold is cooled to 10 ° C. or more and 60 ° C. or less, and the obtained vinyl chloride resin molded article of the present invention is removed from the mold. And the sheet-like molded object which modeled the shape of the metal mold
  • the laminate of the present invention has a foamed polyurethane molded product and any of the vinyl chloride resin molded products described above.
  • the vinyl chloride resin molded body usually constitutes one surface of the laminate.
  • the laminated body of this invention is formed using the vinyl chloride resin composition of this invention, for example, and has a vinyl chloride resin molding with a low peak top temperature of the loss elastic modulus E "after a heat aging test. Therefore, it can be suitably used as an automobile interior material such as an automobile instrument panel.
  • the lamination method of the foamed polyurethane molded product and the vinyl chloride resin molded product is not particularly limited, and for example, the following method can be used. That is, (1) A method in which a foamed polyurethane molded product and a vinyl chloride resin molded product are separately prepared and then bonded together by heat fusion, thermal bonding, or using a known adhesive; (2) Vinyl chloride Polymerization is performed by reacting isocyanates, which are raw materials of the polyurethane foam molded body, and polyols on the resin molded body, and polyurethane is foamed by a known method to form polyurethane foam on the vinyl chloride resin molded body. And a method of directly forming a molded body. Among these, the latter method (2) is preferable because the process is simple and the vinyl chloride resin molded body and the polyurethane foam molded body can be firmly bonded to each other even in the case of obtaining laminated bodies having various shapes. It is.
  • the peak top temperature (° C.) of the loss elastic modulus E ′′ for the measurement sample in the range of frequency 10 Hz, temperature increase rate 2 ° C./min, measurement temperature ⁇ 90 ° C. to + 100 ° C.
  • ⁇ Tensile stress and tensile elongation> The tensile stress and tensile elongation of the vinyl chloride resin molded product were as follows, at the normal temperature (23 ° C.) and at the low temperature ( ⁇ 20 ° C.), after the initial (unheated) and after heating (thermal aging test). Evaluation was made by measuring tensile stress and tensile elongation at break. ⁇ Tensile stress and tensile elongation at room temperature >> [initial] The obtained vinyl chloride resin molded sheet was punched with a No.
  • the polyurethane foam molded body was peeled off from the heated laminate, and only a vinyl chloride resin molded sheet was prepared. Then, under the same conditions as in the initial case, the tensile stress and the tensile elongation at break (%) of the vinyl chloride resin molded sheet after heating for 600 hours were measured. The larger the tensile elongation at break, the better the tensile elongation of the vinyl chloride resin molded article after heating (thermal aging test). ⁇ Tensile stress and tensile elongation at low temperature >> [initial] The obtained vinyl chloride resin molded sheet was punched with a No.
  • the polyurethane foam molded body was peeled off from the heated laminate, and only a vinyl chloride resin molded sheet was prepared. Then, under the same conditions as in the initial case, the tensile stress and the tensile elongation at break (%) of the vinyl chloride resin molded sheet after heating for 600 hours were measured. The larger the tensile elongation at break, the better the tensile elongation of the vinyl chloride resin molded article after heating (thermal aging test).
  • ⁇ Gloss change> The laminate on which the polyurethane foam molding was lined was cut into a size of 7 cm ⁇ 14 cm to obtain a test piece.
  • the test piece was left in a gear oven at 130 ° C. for 600 hours, and the amount of change in glossiness ( ⁇ gloss) of the skin before and after being left was determined.
  • the amount of change in glossiness ( ⁇ gloss) of the skin is determined by the glossiness (incident angle 60 °) on the skin side of the test piece as a gloss meter (product name “Glossmeter GP-60, manufactured by Tokyo Denshoku Co., Ltd.”). ))
  • ⁇ gloss gloss after leaving-gloss before leaving
  • Example 1 ⁇ Preparation of vinyl chloride resin composition> Of the ingredients shown in Table 1, ingredients other than plasticizers (trimellitic acid ester, pyromellitic acid ester, and epoxidized soybean oil) and dusting agent vinyl chloride resin fine particles are placed in a Henschel mixer and mixed. did. Then, when the temperature of the mixture rises to 80 ° C., all of the plasticizer is added, and the temperature is further raised to dry up (the plasticizer is absorbed by the vinyl chloride resin particles, which are vinyl chloride resins, The mixture was further improved.) Thereafter, when the dried-up mixture was cooled to a temperature of 70 ° C.
  • plasticizers trimellitic acid ester, pyromellitic acid ester, and epoxidized soybean oil
  • dusting agent vinyl chloride resin fine particles are placed in a Henschel mixer and mixed. did. Then, when the temperature of the mixture rises to 80 ° C., all of the plasticizer is added, and the temperature is further
  • vinyl chloride resin fine particles as a dusting agent were added to prepare a vinyl chloride resin composition.
  • ⁇ Formation of vinyl chloride resin molding> The vinyl chloride resin composition obtained above is sprinkled on a mold with a texture heated to a temperature of 250 ° C., left to melt for an arbitrary time of about 8 to 20 seconds, and then an excess vinyl chloride resin composition. Shaken off. Thereafter, the embossed mold sprinkled with the vinyl chloride resin composition was allowed to stand in an oven set at a temperature of 200 ° C., and the embossed mold was cooled with cooling water when 60 seconds had elapsed after standing. .
  • the liquid mixture which mixed the obtained polyol mixture and polymethylene polyphenylene polyisocyanate (polymeric MDI) in the ratio from which the index becomes 98 was prepared. And the prepared liquid mixture was poured on the vinyl chloride resin molded sheet laid in the metal mold
  • the laminated body formed was formed in a mold. Then, the formed laminate is taken out from the mold, and the vinyl chloride resin sheet in the laminate is subjected to the above-mentioned method at the peak top temperature, normal temperature and low temperature of the loss elastic modulus E ′′ after heating (thermal aging test). Tensile stress and tensile elongation (after heating (thermal aging test)) and gloss change due to heating (thermal aging test) were evaluated, and the results are shown in Table 1.
  • Example 2 A vinyl chloride resin composition and a vinyl chloride resin molded sheet were prepared in the same manner as in Example 1 except that the amount of iron oxide and / or the average particle size was changed as shown in Table 1 when preparing the vinyl chloride resin composition. And laminates were produced. And it evaluated by the method similar to Example 1. FIG. The results are shown in Table 1.
  • Example 1 A vinyl chloride resin composition, a vinyl chloride resin molded sheet, and a laminate were produced in the same manner as in Example 1 except that no iron oxide was used when preparing the vinyl chloride resin composition. And it evaluated by the method similar to Example 1. FIG. The results are shown in Table 1.
  • Examples 1 to 4 using a vinyl chloride resin composition containing (a) a vinyl chloride resin, (b) a plasticizer, and (c) an iron oxide are shown in (a) a vinyl chloride resin and (b
  • the vinyl chloride resin molded article is used by being laminated with the foamed polyurethane molded article as compared with Comparative Example 1 using a vinyl chloride resin composition containing a plasticizer but not containing (c) iron oxide. It can be seen that the peak top temperature of the loss elastic modulus E ′′ after the heat aging test of the vinyl chloride resin molding can be lowered.
  • a vinyl chloride resin molded product having a low peak top temperature of loss elastic modulus E ′′ after a heat aging test can be provided.
  • the invention can provide a vinyl chloride resin composition capable of forming the vinyl chloride resin molded body, and a laminate having the vinyl chloride resin molded body.

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Abstract

The purpose of the present invention is to provide a vinyl chloride resin composition capable of forming a vinyl chloride resin molded article that, when a polyurethane foam molded article is used as backing, has a low peak top temperature for the loss modulus E" after a heat aging test. This vinyl chloride resin composition contains (a) a vinyl chloride resin, (b) a plasticizer, and (c) iron oxide. The (c) iron oxide content is preferably 0.01-0.8 parts by mass per 100 parts by mass of the (a) vinyl chloride resin.

Description

塩化ビニル樹脂組成物、塩化ビニル樹脂成形体および積層体Vinyl chloride resin composition, vinyl chloride resin molded article and laminate
　本発明は、塩化ビニル樹脂組成物、塩化ビニル樹脂成形体および積層体に関するものである。 The present invention relates to a vinyl chloride resin composition, a vinyl chloride resin molded body, and a laminate.
　塩化ビニル樹脂は、一般に、耐寒性、耐熱性、耐油性などの特性に優れているため、種々の用途に用いられている。
　具体的には、例えば、自動車インスツルメントパネル等の自動車内装部品の形成には、塩化ビニル樹脂成形体からなる表皮や塩化ビニル樹脂成形体からなる表皮に発泡ポリウレタン成形体等の発泡体を裏打ちしてなる積層体などの自動車内装材が用いられている。 Vinyl chloride resins are generally used in various applications because they are excellent in properties such as cold resistance, heat resistance, and oil resistance.
Specifically, for example, for the formation of automobile interior parts such as an automobile instrument panel, a skin made of a vinyl chloride resin molded body or a foam body such as a polyurethane foam molded body is lined on the skin made of a vinyl chloride resin molded body. Automotive interior materials such as laminates are used.
　そして、表皮として用いられる塩化ビニル樹脂成形体は、例えば、塩化ビニル樹脂と、可塑剤とを含む塩化ビニル樹脂組成物をパウダースラッシュ成形などの既知の成形方法を用いて成形することにより製造されている（例えば、特許文献１参照）。 The vinyl chloride resin molded body used as the skin is produced by molding a vinyl chloride resin composition containing a vinyl chloride resin and a plasticizer using a known molding method such as powder slush molding. (For example, refer to Patent Document 1).
　具体的には、例えば特許文献１では、所定の平均重合度の塩化ビニル樹脂１００質量部に対して、所定の可塑剤を１００～２００質量部含む塩化ビニル樹脂組成物を用いて、耐熱老化性に優れる塩化ビニル樹脂成形体を製造することができるとの報告がされている。 Specifically, for example, in Patent Document 1, heat resistance aging resistance is obtained by using a vinyl chloride resin composition containing 100 to 200 parts by mass of a predetermined plasticizer with respect to 100 parts by mass of a vinyl chloride resin having a predetermined average degree of polymerization. It has been reported that a vinyl chloride resin molded article having excellent resistance can be produced.
国際公開第２０１４／０９１８６７号International Publication No. 2014/091867
　ここで、発泡ポリウレタン成形体等の発泡体を裏打ちして使用される塩化ビニル樹脂成形体には、熱老化試験後であっても損失弾性率Ｅ”のピークトップ温度が低い（即ち、塑性変形成分が多くてエネルギー吸収性に優れる）ことが求められている。
　しかしながら、特許文献１に記載の塩化ビニル樹脂組成物では、発泡ポリウレタン成形体と積層して用いた場合に、熱老化試験後における損失弾性率Ｅ”のピークトップ温度が十分に低い塩化ビニル樹脂成形体を形成することが困難であった。 Here, a vinyl chloride resin molded product used by lining a foamed product such as a polyurethane foam molded product has a low peak elastic temperature E ″ even after the heat aging test (that is, plastic deformation). There are many components and it is excellent in energy absorption).
However, in the vinyl chloride resin composition described in Patent Document 1, when it is used by being laminated with a foamed polyurethane molded article, the vinyl chloride resin molding has a sufficiently low peak top temperature of the loss elastic modulus E ″ after the thermal aging test. It was difficult to form a body.
　そこで、本発明は、発泡ポリウレタン成形体を裏打ちして用いた場合に、熱老化試験後における損失弾性率Ｅ”のピークトップ温度が低い塩化ビニル樹脂成形体を提供することを目的とする。また、本発明は、当該塩化ビニル樹脂成形体を形成可能な塩化ビニル樹脂組成物、および、当該塩化ビニル樹脂成形体を有する積層体を提供することを目的とする。 Accordingly, an object of the present invention is to provide a vinyl chloride resin molded product having a low peak top temperature of the loss elastic modulus E ″ after a heat aging test when the foamed polyurethane molded product is used as a backing. An object of the present invention is to provide a vinyl chloride resin composition capable of forming the vinyl chloride resin molded body and a laminate having the vinyl chloride resin molded body.
　本発明者は、上記課題を解決することを目的として鋭意検討を行った。そして、本発明者は、塩化ビニル樹脂と、可塑剤と、鉄酸化物とを含む塩化ビニル樹脂組成物を使用すれば、発泡ポリウレタン成形体を裏打ちして用いた場合に、熱老化試験後における損失弾性率Ｅ”のピークトップ温度が低い塩化ビニル樹脂成形体を形成できることを見出し、本発明を完成させた。 The present inventor has intensively studied for the purpose of solving the above problems. And when this inventor uses the vinyl chloride resin composition containing a vinyl chloride resin, a plasticizer, and an iron oxide, when using a foaming polyurethane molding backed, it is after a heat aging test. The present inventors have found that a vinyl chloride resin molded product having a low peak elastic modulus E ″ and a low peak top temperature can be formed.
　即ち、この発明は、上記課題を有利に解決することを目的とするものであり、本発明の塩化ビニル樹脂組成物は、（ａ）塩化ビニル樹脂、（ｂ）可塑剤、および（ｃ）鉄酸化物を含むことを特徴とする。このように、（ａ）塩化ビニル樹脂、（ｂ）可塑剤、および（ｃ）鉄酸化物を含む塩化ビニル樹脂組成物を用いれば、発泡ポリウレタン成形体を裏打ちして用いた場合に、熱老化試験後における損失弾性率Ｅ”のピークトップ温度が低い塩化ビニル樹脂成形体を形成することができる。
　なお、本発明において、塩化ビニル樹脂成形体に「発泡ポリウレタン成形体を裏打ちして用いる」とは、塩化ビニル樹脂成形体と発泡ポリウレタン成形体が隣接して積層されていれば特に限定されず、塩化ビニル樹脂成形体に発泡および硬化済みの発泡ポリウレタン成形体を積層する場合のみならず、塩化ビニル樹脂成形体上で、発泡ポリウレタン成形体の原料液（通常は、ポリオール化合物を含む液とポリイソシアネート化合物を含む液の２液の混合液）を発泡および硬化させて、塩化ビニル樹脂成形体に発泡ポリウレタン成形体を積層する場合も含まれる。 That is, this invention aims at solving the said subject advantageously, and the vinyl chloride resin composition of this invention is (a) vinyl chloride resin, (b) plasticizer, and (c) iron. It contains an oxide. As described above, when a vinyl chloride resin composition containing (a) a vinyl chloride resin, (b) a plasticizer, and (c) an iron oxide is used, heat aging is caused when a foamed polyurethane molded article is used as a backing. A vinyl chloride resin molded article having a low peak top temperature of the loss elastic modulus E ″ after the test can be formed.
Incidentally, in the present invention, “use the foamed polyurethane molded article as a backing” for the vinyl chloride resin molded article is not particularly limited as long as the vinyl chloride resin molded article and the polyurethane foam molded article are laminated adjacently, Not only when a foamed and cured foamed polyurethane molded product is laminated on a vinyl chloride resin molded product, but also on the vinyl chloride resin molded product, a raw material liquid of the foamed polyurethane molded product (usually a liquid containing a polyol compound and a polyisocyanate). This includes a case where a foamed polyurethane molded body is laminated on a vinyl chloride resin molded body by foaming and curing a liquid mixture of two liquids containing a compound.
　ここで、本発明の塩化ビニル樹脂組成物は、前記（ｃ）鉄酸化物の含有量が、前記（ａ）塩化ビニル樹脂１００質量部当たり０．０１質量部以上０．８質量部以下であることが好ましい。塩化ビニル樹脂組成物中の（ｃ）鉄酸化物の含有量が上記範囲内であれば、塩化ビニル樹脂組成物を用いて形成した塩化ビニル樹脂成形体の引張伸びを十分確保しつつ、当該成形体に発泡ポリウレタン成形体を裏打ちして用いた場合に、熱老化試験後における損失弾性率Ｅ”のピークトップ温度を更に低下させることができる。 Here, in the vinyl chloride resin composition of the present invention, the content of the (c) iron oxide is 0.01 parts by mass or more and 0.8 parts by mass or less per 100 parts by mass of the (a) vinyl chloride resin. It is preferable. If the content of (c) iron oxide in the vinyl chloride resin composition is within the above range, the molding is performed while sufficiently securing the tensile elongation of the vinyl chloride resin molded body formed using the vinyl chloride resin composition. When a foamed polyurethane molded body is used as the backing, the peak top temperature of the loss elastic modulus E ″ after the heat aging test can be further reduced.
　更に、本発明の塩化ビニル樹脂組成物は、前記（ｃ）鉄酸化物の平均粒子径が０．４μｍ以上１．２μｍ以下であることが好ましい。塩化ビニル樹脂組成物中の（ｃ）鉄酸化物の平均粒子径が上記範囲内であれば、当該塩化ビニル樹脂成形体に発泡ポリウレタン成形体を裏打ちして用いた場合に、熱老化試験後における損失弾性率Ｅ”のピークトップ温度を更に低くすることができる。
　なお、本発明において、「鉄酸化物の平均粒子径」は、ＪＩＳ Ｚ８８２５：２０１３に準拠したレーザー回折・散乱法により、測定機器として島津製作所社製「ＳＡＬＤ－２３００」を用い、試料屈折率２．５０－０．２０ｉの条件下で測定された体積平均粒子径を指す。 Furthermore, in the vinyl chloride resin composition of the present invention, the (c) iron oxide preferably has an average particle size of 0.4 μm or more and 1.2 μm or less. If the average particle diameter of (c) iron oxide in the vinyl chloride resin composition is within the above range, when the foamed polyurethane molded product is used as a backing on the vinyl chloride resin molded product, The peak top temperature of the loss elastic modulus E ″ can be further lowered.
In the present invention, “average particle diameter of iron oxide” is determined by using a laser diffraction / scattering method in accordance with JIS Z8825: 2013, using “SALD-2300” manufactured by Shimadzu Corporation as a measuring instrument, and having a sample refractive index of 2 Refers to the volume average particle diameter measured under the condition of 50-0.20i.
　また、本発明の塩化ビニル樹脂組成物は、前記（ｂ）可塑剤の含有量が、前記（ａ）塩化ビニル樹脂１００質量部当たり３０質量部以上２００質量部以下であることが好ましい。塩化ビニル組成物中の（ｂ）可塑剤の含有量が上記範囲内であれば、当該塩化ビニル樹脂組成物を用いて得られる塩化ビニル樹脂成形体の引張伸びを高めると共に、当該成形体に発泡ポリウレタン成形体を裏打ちして用いた場合に、熱老化試験後における損失弾性率Ｅ”のピークトップ温度を更に低下させることができる。加えて、塩化ビニル樹脂成形体の表面に可塑剤が移行して成形体表面がべた付くことを抑制することができる。 In the vinyl chloride resin composition of the present invention, the content of the (b) plasticizer is preferably 30 parts by mass or more and 200 parts by mass or less per 100 parts by mass of the (a) vinyl chloride resin. If the content of the plasticizer (b) in the vinyl chloride composition is within the above range, the tensile elongation of the vinyl chloride resin molded product obtained using the vinyl chloride resin composition is increased and foamed in the molded product. When a polyurethane molded product is used as a backing, the peak top temperature of the loss elastic modulus E ″ after the heat aging test can be further reduced. In addition, the plasticizer migrates to the surface of the vinyl chloride resin molded product. Thus, stickiness of the surface of the molded body can be suppressed.
　ここで、本発明の塩化ビニル樹脂組成物において、前記（ｂ）可塑剤が、トリメリット酸エステルとピロメリット酸エステルの少なくとも一方を含むことができる。（ｂ）可塑剤として、トリメリット酸エステルおよび／またはピロメリット酸エステルを使用した場合であっても、本発明の塩化ビニル樹脂組成物によれば、発泡ポリウレタン成形体を裏打ちして用いた場合に、熱老化試験後における損失弾性率Ｅ”のピークトップ温度が十分に低い塩化ビニル樹脂成形体を形成することができる。 Here, in the vinyl chloride resin composition of the present invention, the (b) plasticizer may contain at least one of trimellitic acid ester and pyromellitic acid ester. (B) Even when trimellitic acid ester and / or pyromellitic acid ester is used as the plasticizer, according to the vinyl chloride resin composition of the present invention, the foamed polyurethane molded body is used as a backing. In addition, a vinyl chloride resin molded article having a sufficiently low peak top temperature of the loss elastic modulus E ″ after the heat aging test can be formed.
　更に、本発明の塩化ビニル樹脂組成物は、粉体成形に用いられることが好ましい。塩化ビニル樹脂組成物を粉体成形に用いれば、例えば、自動車インスツルメントパネル用表皮として良好に使用し得る塩化ビニル樹脂成形体が容易に得られる。 Furthermore, the vinyl chloride resin composition of the present invention is preferably used for powder molding. If the vinyl chloride resin composition is used for powder molding, for example, a vinyl chloride resin molded article that can be used favorably as a skin for an automobile instrument panel can be easily obtained.
　また、本発明の塩化ビニル樹脂組成物は、パウダースラッシュ成形に用いられることが好ましい。塩化ビニル樹脂組成物をパウダースラッシュ成形に用いれば、例えば、自動車インスツルメントパネル用表皮として良好に使用し得る塩化ビニル樹脂成形体が一層容易に得られる。 The vinyl chloride resin composition of the present invention is preferably used for powder slush molding. If the vinyl chloride resin composition is used for powder slush molding, for example, a vinyl chloride resin molded article that can be used favorably as a skin for an automobile instrument panel can be obtained more easily.
　ここで、この発明は、上記課題を有利に解決することを目的とするものであり、本発明の塩化ビニル樹脂成形体は、上述した塩化ビニル樹脂組成物の何れかを成形してなることを特徴とする。上記塩化ビニル樹脂組成物を用いて得られる塩化ビニル樹脂成形体は、発泡ポリウレタン成形体を裏打ちして用いた場合に、熱老化試験後における損失弾性率Ｅ”のピークトップ温度が低い。 Here, this invention aims to solve the above-mentioned problems advantageously, and the vinyl chloride resin molded article of the present invention is formed by molding any of the above-mentioned vinyl chloride resin compositions. Features. The vinyl chloride resin molded product obtained by using the vinyl chloride resin composition has a low peak top temperature of the loss elastic modulus E ″ after the heat aging test when the polyurethane foam molded product is used as a backing.
　更に、本発明の塩化ビニル樹脂成形体は、自動車インスツルメントパネル表皮用として用いることができる。 Furthermore, the vinyl chloride resin molded product of the present invention can be used for an automotive instrument panel skin.
　また、この発明は、上記課題を有利に解決することを目的とするものであり、本発明の積層体は、発泡ポリウレタン成形体と、上述した何れかの塩化ビニル樹脂成形体とを有することを特徴とする。発泡ポリウレタン成形体および上述の塩化ビニル樹脂成形体を用いて積層体とすれば、当該積層体が、熱老化試験後における損失弾性率Ｅ”のピークトップ温度が低い塩化ビニル樹脂成形体部分を備えることができる。 Moreover, this invention aims to solve the said subject advantageously, and the laminated body of this invention has a foaming polyurethane molding and one of the vinyl chloride resin moldings mentioned above. Features. If a foamed polyurethane molded product and the above-described vinyl chloride resin molded product are used to form a laminate, the laminate has a vinyl chloride resin molded product portion having a low peak top temperature of loss elastic modulus E ″ after the thermal aging test. be able to.
　本発明によれば、発泡ポリウレタン成形体を裏打ちして用いた場合に、熱老化試験後における損失弾性率Ｅ”のピークトップ温度が低い塩化ビニル樹脂成形体を提供することができる。また、本発明は、当該塩化ビニル樹脂成形体を形成可能な塩化ビニル樹脂組成物、および、当該塩化ビニル樹脂成形体を有する積層体を提供することができる。 According to the present invention, when a foamed polyurethane molded product is used as a backing, a vinyl chloride resin molded product having a low peak top temperature of loss elastic modulus E ″ after a heat aging test can be provided. The invention can provide a vinyl chloride resin composition capable of forming the vinyl chloride resin molded body, and a laminate having the vinyl chloride resin molded body.
　以下、本発明の実施形態について詳細に説明する。
　本発明の塩化ビニル樹脂組成物は、例えば、本発明の塩化ビニル樹脂成形体を形成する際に用いることができる。また、本発明の塩化ビニル樹脂組成物を用いて形成した塩化ビニル樹脂成形体は、例えば、当該塩化ビニル樹脂成形体を有する本発明の積層体の製造に用いることができる。そして、本発明の塩化ビニル樹脂成形体は、例えば、自動車インスツルメントパネルの表皮用など、自動車内装材用として好適に用いることができる。 Hereinafter, embodiments of the present invention will be described in detail.
The vinyl chloride resin composition of the present invention can be used, for example, when forming the vinyl chloride resin molded article of the present invention. Moreover, the vinyl chloride resin molded object formed using the vinyl chloride resin composition of this invention can be used for manufacture of the laminated body of this invention which has the said vinyl chloride resin molded object, for example. The vinyl chloride resin molded body of the present invention can be suitably used for automobile interior materials, for example, for the skin of automobile instrument panels.
（塩化ビニル樹脂組成物）
　本発明の塩化ビニル樹脂組成物は、（ａ）塩化ビニル樹脂、（ｂ）可塑剤、および（ｃ）鉄酸化物を含み、任意に、その他の添加剤を更に含んでもよい。
　そして、上述した本発明の塩化ビニル樹脂組成物は、少なくとも、上記（ａ）塩化ビニル樹脂と、（ｂ）可塑剤と、（ｃ）鉄酸化物とを含んでいるため、当該塩化ビニル樹脂組成物を使用すれば、発泡ポリウレタン成形体を裏打ちして用いた場合に、熱老化試験後における損失弾性率Ｅ”のピークトップ温度が低い塩化ビニル樹脂成形体を形成することができる。 (Vinyl chloride resin composition)
The vinyl chloride resin composition of the present invention includes (a) a vinyl chloride resin, (b) a plasticizer, and (c) an iron oxide, and may optionally further include other additives.
And since the vinyl chloride resin composition of the present invention described above contains at least (a) the vinyl chloride resin, (b) the plasticizer, and (c) the iron oxide, the vinyl chloride resin composition If a product is used, when a foamed polyurethane molded product is used as a backing, a vinyl chloride resin molded product having a low peak top temperature of the loss elastic modulus E ″ after the heat aging test can be formed.
　なお、上記成分を含む塩化ビニル樹脂組成物を用いることで、従来の塩化ビニル樹脂成形体に比して、熱老化試験後における損失弾性率Ｅ”のピークトップ温度を低下させることができる理由は、以下の通りであると推察される。
　まず、一般に、（ｂ）可塑剤を含む塩化ビニル樹脂成形体からなる表皮に、発泡ポリウレタン成形体を裏打ちすると、塩化ビニル樹脂成形体中に含まれ、当該成形体の損失弾性率Ｅ”のピークトップ温度低下に寄与しうる可塑剤が、徐々に発泡ポリウレタン成形体側に移行してしまう。そして、可塑剤の移行は熱老化により加速される。しかしながら、塩化ビニル樹脂成形体に（ｃ）鉄酸化物を配合すれば、塩化ビニル樹脂成形体中の（ｃ）鉄酸化物が発泡ポリウレタン成形体に接触することで、塩化ビニル樹脂成形体と発泡ポリウレタン成形体の接触面において発泡ポリウレタン成形体が変質し、塩化ビニル樹脂成形体と発泡ポリウレタン成形体の間に、成分移行を抑制する層（遮蔽層）が形成されると推察される。そしてこの遮蔽層により、塩化ビニル樹脂成形体から発泡ポリウレタン成形体への（ｂ）可塑剤の移行を抑制して、熱老化試験後であっても、塩化ビニル樹脂成形体の損失弾性率Ｅ”のピークトップ温度を十分に低く保持できると考えられる。 The reason why the peak top temperature of the loss elastic modulus E ″ after the heat aging test can be reduced by using the vinyl chloride resin composition containing the above components as compared with the conventional vinyl chloride resin molded body is as follows. The following is presumed.
First, in general, (b) when a foamed polyurethane molded product is lined with a skin made of a vinyl chloride resin molded product containing a plasticizer, it is contained in the vinyl chloride resin molded product, and the loss elastic modulus E ″ of the molded product is peaked. The plasticizer that can contribute to lowering the top temperature gradually moves to the foamed polyurethane molded product side, and the plasticizer migration is accelerated by thermal aging, however, (c) iron oxidation in the vinyl chloride resin molded product. If the product is blended, (c) the iron oxide in the vinyl chloride resin molded product comes into contact with the foamed polyurethane molded product, and the foamed polyurethane molded product is altered at the contact surface between the vinyl chloride resin molded product and the foamed polyurethane molded product. Therefore, it is assumed that a layer (shielding layer) that suppresses component migration is formed between the vinyl chloride resin molded body and the polyurethane foam molded body. (B) Suppressing the transition of the plasticizer from the vinyl chloride resin molded body to the foamed polyurethane molded body, and even after the heat aging test, the peak top temperature of the loss elastic modulus E ″ of the vinyl chloride resin molded body It is thought that it can be kept sufficiently low.
＜（ａ）塩化ビニル樹脂＞
　ここで、（ａ）塩化ビニル樹脂としては、例えば、１種類または２種類以上の塩化ビニル樹脂粒子を含有することができ、任意に、１種類または２種類以上の塩化ビニル樹脂微粒子を更に含有することができる。中でも、（ａ）塩化ビニル樹脂は、少なくとも塩化ビニル樹脂粒子を含有することが好ましく、塩化ビニル樹脂粒子および塩化ビニル樹脂微粒子を含有することがより好ましい。
　そして、（ａ）塩化ビニル樹脂は、懸濁重合法、乳化重合法、溶液重合法、塊状重合法など、従来から知られているいずれの製造法によっても製造し得る。
　なお、本明細書において、「樹脂粒子」とは、粒子径が３０μｍ以上の粒子を指し、「樹脂微粒子」とは、粒子径が３０μｍ未満の粒子を指す。 <(A) Vinyl chloride resin>
Here, as the (a) vinyl chloride resin, for example, one kind or two or more kinds of vinyl chloride resin particles can be contained, and optionally one kind or two or more kinds of vinyl chloride resin particles are further contained. be able to. Among these, (a) the vinyl chloride resin preferably contains at least vinyl chloride resin particles, and more preferably contains vinyl chloride resin particles and vinyl chloride resin fine particles.
The (a) vinyl chloride resin can be produced by any conventionally known production method such as suspension polymerization method, emulsion polymerization method, solution polymerization method or bulk polymerization method.
In the present specification, “resin particles” refers to particles having a particle size of 30 μm or more, and “resin particles” refers to particles having a particle size of less than 30 μm.
　また、（ａ）塩化ビニル樹脂としては、塩化ビニル単量体単位からなる単独重合体の他、塩化ビニル単量体単位を好ましくは５０質量％以上、より好ましくは７０質量％以上含有する塩化ビニル系共重合体が挙げられる。そして、塩化ビニル系共重合体を構成し得る、塩化ビニル単量体と共重合可能な単量体（共単量体）の具体例としては、例えば、国際公開第２０１６／０９８３４４号に記載のものを使用することができる。また、これらの成分は、１種類を単独で用いてもよく、２種類以上を任意の比率で組み合わせて用いてもよい。 The vinyl chloride resin (a) is preferably a vinyl chloride containing a vinyl chloride monomer unit in addition to a homopolymer composed of vinyl chloride monomer units, preferably 50% by mass or more, more preferably 70% by mass or more. Examples thereof include a system copolymer. And as a specific example of a monomer (comonomer) copolymerizable with a vinyl chloride monomer that can constitute a vinyl chloride copolymer, for example, as described in International Publication No. 2016/098344 Things can be used. Moreover, these components may be used individually by 1 type, and may be used combining two or more types by arbitrary ratios.
＜＜塩化ビニル樹脂粒子＞＞
　塩化ビニル樹脂組成物において、塩化ビニル樹脂粒子は、通常、マトリックス樹脂（基材）として機能する。なお、塩化ビニル樹脂粒子は、懸濁重合法により製造することが好ましい。 << Vinyl chloride resin particles >>
In the vinyl chloride resin composition, the vinyl chloride resin particles usually function as a matrix resin (base material). The vinyl chloride resin particles are preferably produced by a suspension polymerization method.
［平均重合度］
　そして、塩化ビニル樹脂粒子を構成する塩化ビニル樹脂の平均重合度は、８００以上であることが好ましく、２０００以上であることがより好ましく、５０００以下であることが好ましく、３０００以下であることがより好ましく、２９００以下であることが更に好ましく、２８００以下であることが特に好ましい。塩化ビニル樹脂粒子を構成する塩化ビニル樹脂の平均重合度が８００以上であれば、塩化ビニル樹脂組成物を用いて形成した塩化ビニル樹脂成形体の物理的強度を十分確保しつつ、例えば、引張伸びを良好にできる。そして、熱老化試験後における損失弾性率Ｅ”のピークトップ温度が低く、且つ引張伸びが良好な塩化ビニル樹脂成形体は、例えば、エアバッグが膨張、展開した際に、破片が飛散することなく設計通りに割れる、良好な延性を有する自動車インスツルメントパネルの表皮などの自動車内装材として好適に用いることができる。一方、塩化ビニル樹脂粒子を構成する塩化ビニル樹脂の平均重合度が５０００以下であれば、塩化ビニル樹脂組成物の溶融性を向上させ、当該組成物を用いて形成した塩化ビニル樹脂成形体の表面平滑性を向上できる。
　なお、本発明において「平均重合度」は、ＪＩＳ Ｋ６７２０－２に準拠して測定することができる。 [Average polymerization degree]
The average degree of polymerization of the vinyl chloride resin constituting the vinyl chloride resin particles is preferably 800 or more, more preferably 2000 or more, and preferably 5000 or less, more preferably 3000 or less. It is preferably 2900 or less, more preferably 2800 or less. If the average degree of polymerization of the vinyl chloride resin constituting the vinyl chloride resin particles is 800 or more, the physical strength of the vinyl chloride resin molded body formed using the vinyl chloride resin composition is sufficiently secured, for example, tensile elongation Can be improved. And the vinyl chloride resin molded product having a low peak top temperature of the loss elastic modulus E ″ after the heat aging test and good tensile elongation can be obtained without, for example, debris scattering when the airbag is expanded and deployed. It can be suitably used as an automobile interior material such as a skin of an automotive instrument panel having a good ductility, which can break as designed, while the average degree of polymerization of the vinyl chloride resin constituting the vinyl chloride resin particles is 5000 or less. If it exists, the meltability of a vinyl chloride resin composition can be improved and the surface smoothness of the vinyl chloride resin molded object formed using the said composition can be improved.
In the present invention, the “average degree of polymerization” can be measured according to JIS K6720-2.
［平均粒子径］
　また、塩化ビニル樹脂粒子の平均粒子径は、通常３０μｍ以上であり、５０μｍ以上が好ましく、１００μｍ以上がより好ましく、１３０μｍ以上であることが更に好ましく、１４５μｍ以上であることが特に好ましく、５００μｍ以下が好ましく、２００μｍ以下がより好ましい。塩化ビニル樹脂粒子の平均粒子径が３０μｍ以上であれば、塩化ビニル樹脂組成物の粉体流動性を向上させることができる。一方、塩化ビニル樹脂粒子の平均粒子径が５００μｍ以下であれば、塩化ビニル樹脂組成物の溶融性を高めると共に、当該組成物を用いて形成した塩化ビニル樹脂成形体の表面平滑性を向上させることができる。
　なお、本発明において、「塩化ビニル樹脂粒子の平均粒子径」は、ＪＩＳ Ｚ８８２５：２０１３に準拠したレーザー回折・散乱法により、測定機器として島津製作所社製「ＳＡＬＤ－２３００」を用い、試料屈折率１．７０－０．２０ｉの条件下で測定された体積平均粒子径を指す。 [Average particle size]
The average particle diameter of the vinyl chloride resin particles is usually 30 μm or more, preferably 50 μm or more, more preferably 100 μm or more, further preferably 130 μm or more, particularly preferably 145 μm or more, and 500 μm or less. Preferably, 200 μm or less is more preferable. If the average particle diameter of the vinyl chloride resin particles is 30 μm or more, the powder fluidity of the vinyl chloride resin composition can be improved. On the other hand, if the average particle diameter of the vinyl chloride resin particles is 500 μm or less, the meltability of the vinyl chloride resin composition is improved and the surface smoothness of the vinyl chloride resin molded body formed using the composition is improved. Can do.
In the present invention, the “average particle diameter of vinyl chloride resin particles” is determined by using a laser diffraction / scattering method in accordance with JIS Z8825: 2013, using “SALD-2300” manufactured by Shimadzu Corporation as a measuring instrument, and a sample refractive index. It refers to the volume average particle diameter measured under the condition of 1.70-0.20i.
［含有割合］
　そして、（ａ）塩化ビニル樹脂中の塩化ビニル樹脂粒子の含有割合は、７０質量％以上であることが好ましく、８０質量％以上であることがより好ましく、１００質量％とすることができ、９５質量％以下であることが好ましく、９０質量％以下であることがより好ましい。（ａ）塩化ビニル樹脂中の塩化ビニル樹脂粒子の含有割合が７０質量％以上であれば、塩化ビニル樹脂組成物を用いて形成した塩化ビニル樹脂成形体の物理的強度を十分確保しつつ、引張伸びを良好にできる。一方、（ａ）塩化ビニル樹脂中の塩化ビニル樹脂粒子の含有割合が９５質量％以下であれば、塩化ビニル樹脂組成物の粉体流動性を向上させることができる。 [Content ratio]
The content ratio of the vinyl chloride resin particles in the vinyl chloride resin is preferably 70% by mass or more, more preferably 80% by mass or more, and can be 100% by mass. The content is preferably not more than mass%, more preferably not more than 90 mass%. (A) If the content ratio of the vinyl chloride resin particles in the vinyl chloride resin is 70% by mass or more, the tensile strength is ensured while sufficiently securing the physical strength of the vinyl chloride resin molded body formed using the vinyl chloride resin composition. Elongation can be improved. On the other hand, if the content ratio of the vinyl chloride resin particles in the vinyl chloride resin is 95% by mass or less, the powder flowability of the vinyl chloride resin composition can be improved.
＜＜塩化ビニル樹脂微粒子＞＞
　塩化ビニル樹脂組成物において、塩化ビニル樹脂微粒子は、通常、ダスティング剤（粉体流動性改良剤）として機能する。なお、塩化ビニル樹脂微粒子は、乳化重合法により製造することが好ましい。 << Vinyl chloride resin fine particles >>
In the vinyl chloride resin composition, the vinyl chloride resin fine particles usually function as a dusting agent (powder fluidity improver). The vinyl chloride resin fine particles are preferably produced by an emulsion polymerization method.
［平均重合度］
　そして、塩化ビニル樹脂微粒子を構成する塩化ビニル樹脂の平均重合度は、５００以上が好ましく、７００以上がより好ましく、８００以上であることが更に好ましく、３０００以下が好ましく、２５００以下がより好ましく、２１００以下であることが更に好ましい。ダスティング剤としての塩化ビニル樹脂微粒子を構成する塩化ビニル樹脂の平均重合度が５００以上であれば、塩化ビニル樹脂組成物の粉体流動性が向上すると共に、当該組成物を用いて得られる成形体の引張伸びを良好にすることができる。一方、塩化ビニル樹脂微粒子を構成する塩化ビニル樹脂の平均重合度が３０００以下であれば、塩化ビニル樹脂組成物の溶融性が高まり、当該組成物を用いて形成した塩化ビニル樹脂成形体の表面平滑性を向上させることができる。 [Average polymerization degree]
The average degree of polymerization of the vinyl chloride resin constituting the vinyl chloride resin fine particles is preferably 500 or more, more preferably 700 or more, still more preferably 800 or more, preferably 3000 or less, more preferably 2500 or less. More preferably, it is as follows. If the average degree of polymerization of the vinyl chloride resin constituting the fine particle of the vinyl chloride resin as a dusting agent is 500 or more, the powder flowability of the vinyl chloride resin composition is improved and molding obtained using the composition The tensile elongation of the body can be improved. On the other hand, if the average degree of polymerization of the vinyl chloride resin constituting the vinyl chloride resin fine particles is 3000 or less, the meltability of the vinyl chloride resin composition increases, and the surface smoothness of the vinyl chloride resin molded body formed using the composition increases. Can be improved.
［平均粒子径］
　また、塩化ビニル樹脂微粒子の平均粒子径は、通常３０μｍ未満であり、１０μｍ以下であることが好ましく、５μｍ以下であることがより好ましく、２．０μｍ以下であることが更に好ましく、１．８μｍ以下であることが特に好ましく、０．１μｍ以上であることが好ましく、１μｍ以上であることがより好ましく、１．５μｍ以上であることが更に好ましく、１．７μｍ以上であることが特に好ましい。塩化ビニル樹脂微粒子の平均粒子径が０．１μｍ以上であれば、例えばダスティング剤としてのサイズを過度に小さくすることなく、塩化ビニル樹脂組成物の粉体流動性を向上させることができる。一方、塩化ビニル樹脂微粒子の平均粒子径が３０μｍ未満であれば、塩化ビニル樹脂組成物の溶融性が高まり、当該組成物を用いて形成した塩化ビニル樹脂成形体の表面平滑性を向上させることができる。
　なお、本発明において、「塩化ビニル樹脂微粒子の平均粒子径」は、ＪＩＳ Ｚ８８２５：２０１３に準拠したレーザー回折・散乱法により、測定機器として島津製作所社製「ＳＡＬＤ－２３００」を用い、試料屈折率１．６０－０．００ｉの条件下で測定された体積平均粒子径を指す。 [Average particle size]
The average particle size of the vinyl chloride resin fine particles is usually less than 30 μm, preferably 10 μm or less, more preferably 5 μm or less, still more preferably 2.0 μm or less, and 1.8 μm or less. Is particularly preferably 0.1 μm or more, more preferably 1 μm or more, further preferably 1.5 μm or more, and particularly preferably 1.7 μm or more. If the average particle diameter of the vinyl chloride resin fine particles is 0.1 μm or more, for example, the powder fluidity of the vinyl chloride resin composition can be improved without excessively reducing the size as a dusting agent. On the other hand, if the average particle diameter of the vinyl chloride resin fine particles is less than 30 μm, the meltability of the vinyl chloride resin composition is increased, and the surface smoothness of the vinyl chloride resin molded body formed using the composition can be improved. it can.
In the present invention, the “average particle diameter of the vinyl chloride resin fine particles” is determined by using a laser diffraction / scattering method according to JIS Z8825: 2013, using “SALD-2300” manufactured by Shimadzu Corporation as a measuring instrument, and a sample refractive index. 1. Refers to the volume average particle diameter measured under the condition of 60-0.00i.
［含有割合］
　そして、（ａ）塩化ビニル樹脂中の塩化ビニル樹脂微粒子の含有割合は、５質量％以上であることが好ましく、１０質量％以上であることがより好ましく、３０質量％以下であることが好ましく、２０質量％以下であることがより好ましい。（ａ）塩化ビニル樹脂中の塩化ビニル樹脂微粒子の含有割合が５質量％以上であれば、塩化ビニル樹脂組成物の粉体流動性を向上させることができる。一方、（ａ）塩化ビニル樹脂中の塩化ビニル樹脂微粒子の含有割合が３０質量％以下であれば、塩化ビニル樹脂組成物を用いて形成した塩化ビニル樹脂成形体の物理的強度を高めることができる。 [Content ratio]
And (a) the content ratio of the vinyl chloride resin fine particles in the vinyl chloride resin is preferably 5% by mass or more, more preferably 10% by mass or more, and preferably 30% by mass or less, More preferably, it is 20 mass% or less. (A) If the content rate of the vinyl chloride resin fine particles in the vinyl chloride resin is 5% by mass or more, the powder flowability of the vinyl chloride resin composition can be improved. On the other hand, if the content of the vinyl chloride resin fine particles in the vinyl chloride resin is 30% by mass or less, the physical strength of the vinyl chloride resin molded body formed using the vinyl chloride resin composition can be increased. .
＜（ｂ）可塑剤＞
　（ｂ）可塑剤は、塩化ビニル樹脂組成物から形成される塩化ビニル樹脂成形体に、柔軟性等を付与しうる成分である。 <(B) Plasticizer>
(B) A plasticizer is a component which can provide a softness | flexibility etc. to the vinyl chloride resin molded object formed from a vinyl chloride resin composition.
＜＜種類＞＞
　ここで、（ｂ）可塑剤の具体例としては、以下の一次可塑剤及び二次可塑剤などが挙げられる。
　いわゆる一次可塑剤としては、トリメリット酸トリメチル、トリメリット酸トリエチル、トリメリット酸トリ－ｎ－プロピル、トリメリット酸トリ－ｎ－ブチル、トリメリット酸トリ－ｎ－ペンチル、トリメリット酸トリ－ｎ－ヘキシル、トリメリット酸トリ－ｎ－ヘプチル、トリメリット酸トリ－ｎ－オクチル、トリメリット酸トリ－ｎ－ノニル、トリメリット酸トリ－ｎ－デシル、トリメリット酸トリ－ｎ－ウンデシル、トリメリット酸トリ－ｎ－ドデシル、トリメリット酸トリ－ｎ－トリデシル、トリメリット酸トリ－ｎ－テトラデシル、トリメリット酸トリ－ｎ－ペンタデシル、トリメリット酸トリ－ｎ－ヘキサデシル、トリメリット酸トリ－ｎ－ヘプタデシル、トリメリット酸トリ－ｎ－ステアリル、トリメリット酸トリ－ｎ－アルキルエステル（ここで、トリメリット酸トリ－ｎ－アルキルエステルが有するアルキル基の炭素数は一分子中で互いに異なっていても良い。）などの、エステルを構成するアルキル基が直鎖状である直鎖状トリメリット酸エステル〔なお、これらのトリメリット酸エステルは、単一化合物からなるものであっても、混合物であってもよい。〕；
　トリメリット酸トリ－ｉ－プロピル、トリメリット酸トリ－ｉ－ブチル、トリメリット酸トリ－ｉ－ペンチル、トリメリット酸トリ－ｉ－ヘキシル、トリメリット酸トリ－ｉ－ヘプチル、トリメリット酸トリ－ｉ－オクチル、トリメリット酸トリ－（２－エチルヘキシル）、トリメリット酸トリ－ｉ－ノニル、トリメリット酸トリ－ｉ－デシル、トリメリット酸トリ－ｉ－ウンデシル、トリメリット酸トリ－ｉ－ドデシル、トリメリット酸トリ－ｉ－トリデシル、トリメリット酸トリ－ｉ－テトラデシル、トリメリット酸トリ－ｉ－ペンタデシル、トリメリット酸トリ－ｉ－ヘキサデシル、トリメリット酸トリ－ｉ－ヘプタデシル、トリメリット酸トリ－ｉ－オクタデシル、トリメリット酸トリアルキルエステル（ここで、トリメリット酸トリアルキルエステルが有するアルキル基の炭素数は一分子中で互いに異なっていても良い。）などの、エステルを構成するアルキル基が分岐状である分岐状トリメリット酸エステル〔なお、これらのトリメリット酸エステルは、単一化合物からなるものであっても、混合物であってもよい。〕；
　ピロメリット酸テトラメチル、ピロメリット酸テトラエチル、ピロメリット酸テトラ－ｎ－プロピル、ピロメリット酸テトラ－ｎ－ブチル、ピロメリット酸テトラ－ｎ－ペンチル、ピロメリット酸テトラ－ｎ－ヘキシル、ピロメリット酸テトラ－ｎ－ヘプチル、ピロメリット酸テトラ－ｎ－オクチル、ピロメリット酸テトラ－ｎ－ノニル、ピロメリット酸テトラ－ｎ－デシル、ピロメリット酸テトラ－ｎ－ウンデシル、ピロメリット酸テトラ－ｎ－ドデシル、ピロメリット酸テトラ－ｎ－トリデシル、ピロメリット酸テトラ－ｎ－テトラデシル、ピロメリット酸テトラ－ｎ－ペンタデシル、ピロメリット酸テトラ－ｎ－ヘキサデシル、ピロメリット酸テトラ－ｎ－ヘプタデシル、ピロメリット酸テトラ－ｎ－ステアリル、ピロメリット酸テトラ－ｎ－アルキルエステル（ここで、ピロメリット酸テトラ－ｎ－アルキルエステルが有するアルキル基の炭素数は一分子中で互いに異なっていても良い。）などの、エステルを構成するアルキル基が直鎖状である直鎖状ピロメリット酸エステル〔なお、これらのピロメリット酸エステルは、単一化合物からなるものであっても、混合物であってもよい。〕；
　ピロメリット酸テトラ－ｉ－プロピル、ピロメリット酸テトラ－ｉ－ブチル、ピロメリット酸テトラ－ｉ－ペンチル、ピロメリット酸テトラ－ｉ－ヘキシル、ピロメリット酸テトラ－ｉ－ヘプチル、ピロメリット酸テトラ－ｉ－オクチル、ピロメリット酸テトラ－（２－エチルヘキシル）、ピロメリット酸テトラ－ｉ－ノニル、ピロメリット酸テトラ－ｉ－デシル、ピロメリット酸テトラ－ｉ－ウンデシル、ピロメリット酸テトラ－ｉ－ドデシル、ピロメリット酸テトラ－ｉ－トリデシル、ピロメリット酸テトラ－ｉ－テトラデシル、ピロメリット酸テトラ－ｉ－ペンタデシル、ピロメリット酸テトラ－ｉ－ヘキサデシル、ピロメリット酸テトラ－ｉ－ヘプタデシル、ピロメリット酸テトラ－ｉ－オクタデシル、ピロメリット酸テトラアルキルエステル（ここで、ピロメリット酸テトラアルキルエステルが有するアルキル基の炭素数は一分子中で互いに異なっていても良い。）などの、エステルを構成するアルキル基が分岐状である分岐状ピロメリット酸エステル〔なお、これらのピロメリット酸エステルは、単一化合物からなるものであっても、混合物であってもよい。〕；
　ジメチルフタレート、ジエチルフタレート、ジブチルフタレート、ジ－（２－エチルヘキシル）フタレート、ジ－ｎ－オクチルフタレート、ジイソブチルフタレート、ジヘプチルフタレート、ジフェニルフタレート、ジイソデシルフタレート、ジトリデシルフタレート、ジウンデシルフタレート、ジベンジルフタレート、ブチルベンジルフタレート、ジノニルフタレート、ジシクロヘキシルフタレートなどのフタル酸誘導体；
　ジメチルイソフタレート、ジ－（２－エチルヘキシル）イソフタレート、ジイソオクチルイソフタレートなどのイソフタル酸誘導体；
　ジ－（２－エチルヘキシル）テトラヒドロフタレート、ジ－ｎ－オクチルテトラヒドロフタレート、ジイソデシルテトラヒドロフタレートなどのテトラヒドロフタル酸誘導体；
　ジ－ｎ－ブチルアジペート、ジ（２－エチルヘキシル）アジペート、ジイソデシルアジペート、ジイソノニルアジペートなどのアジピン酸誘導体；
　ジ－（２－エチルヘキシル）アゼレート、ジイソオクチルアゼレート、ジ－ｎ－ヘキシルアゼレートなどのアゼライン酸誘導体；
　ジ－ｎ－ブチルセバケート、ジ－（２－エチルヘキシル）セバケート、ジイソデシルセバケート、ジ－（２－ブチルオクチル）セバケートなどのセバシン酸誘導体；
　ジ－ｎ－ブチルマレエート、ジメチルマレエート、ジエチルマレエート、ジ－（２－エチルヘキシル）マレエートなどのマレイン酸誘導体；
　ジ－ｎ－ブチルフマレート、ジ－（２－エチルヘキシル）フマレートなどのフマル酸誘導体；
　トリエチルシトレート、トリ－ｎ－ブチルシトレート、アセチルトリエチルシトレート、アセチルトリ－（２－エチルヘキシル）シトレートなどのクエン酸誘導体；
　モノメチルイタコネート、モノブチルイタコネート、ジメチルイタコネート、ジエチルイタコネート、ジブチルイタコネート、ジ－（２－エチルヘキシル）イタコネートなどのイタコン酸誘導体；
　ブチルオレエート、グリセリルモノオレエート、ジエチレングリコールモノオレエートなどのオレイン酸誘導体；
　メチルアセチルリシノレート、ブチルアセチルリシノレート、グリセリルモノリシノレート、ジエチレングリコールモノリシノレートなどのリシノール酸誘導体；
　ｎ－ブチルステアレート、ジエチレングリコールジステアレートなどのステアリン酸誘導体（但し、１２－ヒドロキシステアリン酸エステルを除く）；
　ジエチレングリコールモノラウレート、ジエチレングリコールジペラルゴネート、ペンタエリスリトール脂肪酸エステルなどのその他の脂肪酸誘導体；
　トリエチルホスフェート、トリブチルホスフェート、トリ－（２－エチルヘキシル）ホスフェート、トリブトキシエチルホスフェート、トリフェニルホスフェート、クレジルジフェニルホスフェート、トリクレジルホスフェート、トリキシレニルホスフェート、トリス（クロロエチル）ホスフェートなどのリン酸誘導体；
　ジエチレングリコールジベンゾエート、ジプロピレングリコールジベンゾエート、トリエチレングリコールジベンゾエート、トリエチレングリコールジ－（２－エチルブチレート）、トリエチレングリコールジ－（２－エチルヘキソエート）、ジブチルメチレンビスチオグリコレートなどのグリコール誘導体；
　グリセロールモノアセテート、グリセロールトリアセテート、グリセロールトリブチレートなどのグリセリン誘導体；
　エポキシヘキサヒドロフタル酸ジイソデシル、エポキシトリグリセライド、エポキシ化オレイン酸オクチル、エポキシ化オレイン酸デシルなどのエポキシ誘導体；
　アジピン酸系ポリエステル、セバシン酸系ポリエステル、フタル酸系ポリエステルなどのポリエステル系可塑剤；
などが挙げられる。 <<< Type >>>
Here, specific examples of the (b) plasticizer include the following primary plasticizer and secondary plasticizer.
As so-called primary plasticizers, trimethyl trimellitic acid, triethyl trimellitic acid, tri-n-propyl trimellitic acid, tri-n-butyl trimellitic acid, tri-n-pentyl trimellitic acid, tri-n trimellitic acid -Hexyl, tri-n-heptyl trimellitic acid, tri-n-octyl trimellitic acid, tri-n-nonyl trimellitic acid, tri-n-decyl trimellitic acid, tri-n-undecyl trimellitic acid, trimellitic Tri-n-dodecyl acid, tri-n-tridecyl trimellitic acid, tri-n-tetradecyl trimellitic acid, tri-n-pentadecyl trimellitic acid, tri-n-hexadecyl trimellitic acid, tri-n-trimellitic acid Heptadecyl, trimellitic acid tri-n-stearyl, trimellitic acid tri-n-a The alkyl group constituting the ester such as a kill ester (wherein the carbon number of the alkyl group of the trimellitic acid tri-n-alkyl ester may be different in one molecule) is linear. Linear trimellitic acid ester [Note that these trimellitic acid esters may be composed of a single compound or a mixture thereof. ];
Trimellitic acid tri-i-propyl, trimellitic acid tri-i-butyl, trimellitic acid tri-i-pentyl, trimellitic acid tri-i-hexyl, trimellitic acid tri-i-heptyl, trimellitic acid tri- i-octyl, trimellitic acid tri- (2-ethylhexyl), trimellitic acid tri-i-nonyl, trimellitic acid tri-i-decyl, trimellitic acid tri-i-undecyl, trimellitic acid tri-i-dodecyl , Trimellitic acid tri-i-tridecyl, trimellitic acid tri-i-tetradecyl, trimellitic acid tri-i-pentadecyl, trimellitic acid tri-i-hexadecyl, trimellitic acid tri-i-heptadecyl, trimellitic acid trimethyl -I-octadecyl, trimellitic acid trialkyl ester (where trimellitic acid Branched trimellitic acid esters in which the alkyl group constituting the ester is branched, such as the number of carbon atoms of the alkyl group in the alkyl ester may be different from each other in one molecule. The ester may be a single compound or a mixture. ];
Pyromellitic acid tetramethyl, pyromellitic acid tetraethyl, pyromellitic acid tetra-n-propyl, pyromellitic acid tetra-n-butyl, pyromellitic acid tetra-n-pentyl, pyromellitic acid tetra-n-hexyl, pyromellitic acid Tetra-n-heptyl, pyromellitic acid tetra-n-octyl, pyromellitic acid tetra-n-nonyl, pyromellitic acid tetra-n-decyl, pyromellitic acid tetra-n-undecyl, pyromellitic acid tetra-n-dodecyl , Pyromellitic acid tetra-n-tridecyl, pyromellitic acid tetra-n-tetradecyl, pyromellitic acid tetra-n-pentadecyl, pyromellitic acid tetra-n-hexadecyl, pyromellitic acid tetra-n-heptadecyl, pyromellitic acid tetra -N-stearyl, pyromellitic acid tet The alkyl group constituting the ester is linear, such as -n-alkyl ester (wherein the carbon number of the alkyl group of pyromellitic acid tetra-n-alkyl ester may be different from each other in one molecule) Linear pyromellitic acid ester [These pyromellitic acid esters may be composed of a single compound or a mixture. ];
Pyromellitic acid tetra-i-propyl, pyromellitic acid tetra-i-butyl, pyromellitic acid tetra-i-pentyl, pyromellitic acid tetra-i-hexyl, pyromellitic acid tetra-i-heptyl, pyromellitic acid tetra- i-octyl, pyromellitic acid tetra- (2-ethylhexyl), pyromellitic acid tetra-i-nonyl, pyromellitic acid tetra-i-decyl, pyromellitic acid tetra-i-undecyl, pyromellitic acid tetra-i-dodecyl , Pyromellitic acid tetra-i-tridecyl, pyromellitic acid tetra-i-tetradecyl, pyromellitic acid tetra-i-pentadecyl, pyromellitic acid tetra-i-hexadecyl, pyromellitic acid tetra-i-heptadecyl, pyromellitic acid tetra -I-octadecyl, pyromellitic acid tetraalkyl Branched pyromellitic acid in which the alkyl group constituting the ester is branched, such as an ester (wherein the carbon number of the alkyl group of the pyromellitic acid tetraalkyl ester may be different from each other in one molecule) Esters [These pyromellitic acid esters may be composed of a single compound or a mixture thereof. ];
Dimethyl phthalate, diethyl phthalate, dibutyl phthalate, di- (2-ethylhexyl) phthalate, di-n-octyl phthalate, diisobutyl phthalate, diheptyl phthalate, diphenyl phthalate, diisodecyl phthalate, ditridecyl phthalate, diundecyl phthalate, dibenzyl phthalate, Phthalic acid derivatives such as butylbenzyl phthalate, dinonyl phthalate, dicyclohexyl phthalate;
Isophthalic acid derivatives such as dimethyl isophthalate, di- (2-ethylhexyl) isophthalate, diisooctyl isophthalate;
Tetrahydrophthalic acid derivatives such as di- (2-ethylhexyl) tetrahydrophthalate, di-n-octyltetrahydrophthalate, diisodecyltetrahydrophthalate;
Adipic acid derivatives such as di-n-butyl adipate, di (2-ethylhexyl) adipate, diisodecyl adipate, diisononyl adipate;
Azelaic acid derivatives such as di- (2-ethylhexyl) azelate, diisooctylazelate, di-n-hexylazelate;
Sebacic acid derivatives such as di-n-butyl sebacate, di- (2-ethylhexyl) sebacate, diisodecyl sebacate, di- (2-butyloctyl) sebacate;
Maleic acid derivatives such as di-n-butyl maleate, dimethyl maleate, diethyl maleate, di- (2-ethylhexyl) maleate;
Fumaric acid derivatives such as di-n-butyl fumarate and di- (2-ethylhexyl) fumarate;
Citric acid derivatives such as triethyl citrate, tri-n-butyl citrate, acetyl triethyl citrate, acetyl tri- (2-ethylhexyl) citrate;
Itaconic acid derivatives such as monomethyl itaconate, monobutyl itaconate, dimethyl itaconate, diethyl itaconate, dibutyl itaconate, di- (2-ethylhexyl) itaconate;
Oleic acid derivatives such as butyl oleate, glyceryl monooleate, diethylene glycol monooleate;
Ricinoleic acid derivatives such as methylacetylricinoleate, butylacetylricinoleate, glycerylmonoricinoleate, diethylene glycol monoricinoleate;
stearic acid derivatives such as n-butyl stearate and diethylene glycol distearate (except 12-hydroxystearic acid ester);
Other fatty acid derivatives such as diethylene glycol monolaurate, diethylene glycol dipelargonate, pentaerythritol fatty acid ester;
Phosphoric acid derivatives such as triethyl phosphate, tributyl phosphate, tri- (2-ethylhexyl) phosphate, tributoxyethyl phosphate, triphenyl phosphate, cresyl diphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, tris (chloroethyl) phosphate;
Diethylene glycol dibenzoate, dipropylene glycol dibenzoate, triethylene glycol dibenzoate, triethylene glycol di- (2-ethylbutyrate), triethylene glycol di- (2-ethylhexoate), dibutylmethylene bisthioglycolate, etc. A glycol derivative of
Glycerol derivatives such as glycerol monoacetate, glycerol triacetate, glycerol tributyrate;
Epoxy derivatives such as epoxy hexahydrophthalate diisodecyl, epoxy triglyceride, epoxidized octyl oleate, epoxidized decyl oleate;
Polyester plasticizers such as adipic acid polyester, sebacic acid polyester, phthalic acid polyester;
Etc.
　また、いわゆる二次可塑剤としては、エポキシ化大豆油、エポキシ化亜麻仁油等のエポキシ化植物油；塩素化パラフィン、トリエチレングリコールジカプリレートなどのグリコールの脂肪酸エステル、ブチルエポキシステアレート、フェニルオレエート、ジヒドロアビエチン酸メチルなどが挙げられる。 In addition, so-called secondary plasticizers include epoxidized vegetable oils such as epoxidized soybean oil and epoxidized linseed oil; fatty acid esters of glycols such as chlorinated paraffin and triethylene glycol dicaprylate, butyl epoxy stearate, phenyl oleate And methyl dihydroabietate.
　上述した可塑剤は、１種類を単独で用いてもよく、２種類以上を任意の比率で組み合わせて用いてもよい。
　そして、上述した可塑剤の中でも、塩化ビニル樹脂組成物および塩化ビニル樹脂成形体を容易かつ良好に得られる観点からは、（ｂ）可塑剤としては、少なくとも一次可塑剤を用いることが好ましく、一次可塑剤および二次可塑剤を併用することがより好ましい。具体的には、（ｂ）可塑剤としては、トリメリット酸エステルおよび／またはピロメリット酸エステルを用いることが好ましく、少なくともトリメリット酸エステルを用いることがより好ましく、トリメリット酸エステルとエポキシ化大豆油とを併用することが更に好ましい。 The plasticizer mentioned above may be used individually by 1 type, and may be used combining two or more types by arbitrary ratios.
Among the plasticizers described above, from the viewpoint of easily and satisfactorily obtaining the vinyl chloride resin composition and the vinyl chloride resin molded article, it is preferable to use at least a primary plasticizer as the plasticizer (b). It is more preferable to use a plasticizer and a secondary plasticizer in combination. Specifically, as the plasticizer (b), trimellitic acid ester and / or pyromellitic acid ester is preferably used, and at least trimellitic acid ester is more preferably used. It is more preferable to use bean oil in combination.
＜＜含有量＞＞
　そして、（ｂ）可塑剤の含有量は、(ａ)塩化ビニル樹脂１００質量部当たり、３０質量部以上であることが好ましく、６０質量部以上であることがより好ましく、８０質量部以上であることが更に好ましく、１３０質量部以上であることが一層好ましく、２００質量部以下であることが好ましく、１６０質量部以下であることがより好ましく、１４０質量部以下であることが更に好ましい。（ｂ）可塑剤の含有量が３０質量部以上であれば、塩化ビニル樹脂組成物を用いて形成した塩化ビニル樹脂成形体の引張伸びを高めると共に、熱老化試験後における損失弾性率Ｅ”のピークトップ温度を一層低下させることができる。一方、（ｂ）可塑剤の含有量が２００質量部以下であれば、塩化ビニル樹脂成形体の表面に可塑剤が移行して成形体表面がべた付くことを抑制することができる。 << Content >>
The content of (b) plasticizer is preferably 30 parts by mass or more, more preferably 60 parts by mass or more, and 80 parts by mass or more per 100 parts by mass of (a) vinyl chloride resin. More preferably, it is 130 parts by mass or more, more preferably 200 parts by mass or less, more preferably 160 parts by mass or less, and still more preferably 140 parts by mass or less. (B) If the content of the plasticizer is 30 parts by mass or more, the tensile elongation of the vinyl chloride resin molded body formed using the vinyl chloride resin composition is increased and the loss elastic modulus E ″ after the heat aging test is increased. On the other hand, when the content of the plasticizer (b) is 200 parts by mass or less, the plasticizer moves to the surface of the vinyl chloride resin molded body, and the surface of the molded body becomes sticky. This can be suppressed.
＜（ｃ）鉄酸化物＞
　（ｃ）鉄酸化物は、塩化ビニル樹脂組成物から形成される塩化ビニル樹脂成形体の、熱老化試験後における損失弾性率Ｅ”のピークトップ温度を低下させうる成分である。 <(C) Iron oxide>
(C) The iron oxide is a component that can lower the peak top temperature of the loss elastic modulus E ″ after the heat aging test of the vinyl chloride resin molded body formed from the vinyl chloride resin composition.
＜＜種類＞＞
　ここで、（ｃ）鉄酸化物としては、特に限定されないが、酸化鉄（ＩＩ）（ＦｅＯ）、四酸化三鉄（Ｆｅ３Ｏ４）、酸化鉄（ＩＩＩ）（Ｆｅ２Ｏ３）等が挙げられる。これらの鉄酸化物は、１種類を単独で用いてもよく、２種類以上を任意の比率で組み合わせて用いてもよい。そして、塩化ビニル樹脂成形体の熱老化試験後における損失弾性率Ｅ”のピークトップ温度を更に低くする観点から、（ｃ）鉄酸化物としては、酸化鉄（ＩＩＩ）（Ｆｅ２Ｏ３）を用いることが好ましく、α－酸化鉄（ＩＩＩ）（α－Ｆｅ２Ｏ３）を用いることがより好ましい。 <<< Type >>>
Here, (c) the iron oxide is not particularly limited, but iron (II) (FeO), triiron tetroxide (Fe 3 O 4 ), iron (III) oxide (Fe 2 O 3 ) and the like may be used. Can be mentioned. One of these iron oxides may be used alone, or two or more thereof may be used in combination at any ratio. From the viewpoint of further reducing the peak top temperature of the loss elastic modulus E ″ after the thermal aging test of the vinyl chloride resin molded body, (c) iron oxide includes iron (III) (Fe 2 O 3 ). It is preferable to use α-iron oxide (III) (α-Fe 2 O 3 ).
＜＜平均粒子径＞＞
　また、（ｃ）鉄酸化物の平均粒子径は、０．４μｍ以上であることが好ましく、０．５μｍ以上であることがより好ましく、０．５５μｍ以上であることが更に好ましく、１．２μｍ以下であることが好ましく、１．１μｍ以下であることがより好ましく、１．０μｍ以下であることが更に好ましく、０．９μｍ以下であることが更に好ましい。（ｃ）鉄酸化物の平均粒子径が上記範囲内であれば、上述した遮蔽層が効率よく形成されるためと推察されるが、塩化ビニル樹脂成形体の熱老化試験後における損失弾性率Ｅ”のピークトップ温度を更に低くすることができる。 << Average particle size >>
Further, (c) the average particle diameter of the iron oxide is preferably 0.4 μm or more, more preferably 0.5 μm or more, further preferably 0.55 μm or more, and 1.2 μm or less. Preferably, it is 1.1 μm or less, more preferably 1.0 μm or less, and even more preferably 0.9 μm or less. (C) If the average particle diameter of the iron oxide is within the above range, it is assumed that the above-described shielding layer is formed efficiently, but the loss elastic modulus E after the heat aging test of the vinyl chloride resin molded body The peak top temperature of "" can be further reduced.
＜＜含有量＞＞
　そして、（ｃ）鉄酸化物の含有量は、(ａ)塩化ビニル樹脂１００質量部当たり、０．０１質量部以上であることが好ましく、０．０２質量部以上であることがより好ましく、０．０３質量部以上であることが更に好ましく、０．０５質量部以上であることが一層好ましく、０．０８質量部以上であることが特に好ましく、０．８質量部以下であることが好ましく、０．７質量部以下であることがより好ましく、０．６質量部以下であることが更に好ましく、０．５質量部以下であることが特に好ましい。（ｃ）鉄酸化物の含有量が０．０１質量部以上であれば、塩化ビニル樹脂組成物を用いて形成した塩化ビニル樹脂成形体の、熱老化試験後における損失弾性率Ｅ”のピークトップ温度を更に低くすることができる。一方、（ｃ）鉄酸化物の含有量が０．８質量部以下であれば、塩化ビニル樹脂組成物を用いて形成した塩化ビニル樹脂成形体の引張伸びを十分確保することができる。 << Content >>
The content of (c) iron oxide is preferably 0.01 parts by mass or more, more preferably 0.02 parts by mass or more per 100 parts by mass of (a) vinyl chloride resin. 0.03 parts by mass or more, more preferably 0.05 parts by mass or more, particularly preferably 0.08 parts by mass or more, and preferably 0.8 parts by mass or less, The amount is more preferably 0.7 parts by mass or less, still more preferably 0.6 parts by mass or less, and particularly preferably 0.5 parts by mass or less. (C) If the content of iron oxide is 0.01 parts by mass or more, the peak top of the loss elastic modulus E ″ after the heat aging test of the vinyl chloride resin molded body formed using the vinyl chloride resin composition On the other hand, if the content of (c) iron oxide is 0.8 parts by mass or less, the tensile elongation of the vinyl chloride resin molded body formed using the vinyl chloride resin composition is reduced. Enough can be secured.
＜添加剤＞
　本発明の塩化ビニル樹脂組成物は、上述した成分以外に、各種添加剤を更に含有してもよい。添加剤としては、特に限定されることなく、例えば、過塩素酸処理ハイドロタルサイト、ゼオライト、β－ジケトン、脂肪酸金属塩などの安定剤；離型剤；上記塩化ビニル樹脂微粒子以外のその他のダスティング剤；耐衝撃性改良剤；過塩素酸処理ハイドロタルサイト以外の過塩素酸化合物（過塩素酸ナトリウム、過塩素酸カリウム等）；酸化防止剤；防カビ剤；難燃剤；帯電防止剤；充填剤；光安定剤；発泡剤；成形加工性調節剤（シリコーンオイル等）；着色剤が挙げられる。
　このような添加剤としては、特に限定されることなく、例えば、国際公開第２０１６／０９８３４４号に記載のものを使用することができる。 <Additives>
The vinyl chloride resin composition of the present invention may further contain various additives in addition to the components described above. The additive is not particularly limited and includes, for example, stabilizers such as perchloric acid-treated hydrotalcite, zeolite, β-diketone, and fatty acid metal salt; mold release agent; Sting agents; impact resistance improvers; perchloric acid compounds other than perchloric acid-treated hydrotalcite (sodium perchlorate, potassium perchlorate, etc.); antioxidants; fungicides; flame retardants; Examples thereof include fillers; light stabilizers; foaming agents; moldability control agents (silicone oil and the like); and colorants.
Such additives are not particularly limited, and for example, those described in International Publication No. 2016/098344 can be used.
＜塩化ビニル樹脂組成物の調製方法＞
　本発明の塩化ビニル樹脂組成物は、上述した成分を混合して調製することができる。
　ここで、上記（ａ）塩化ビニル樹脂と、（ｂ）可塑剤と、（ｃ）鉄酸化物と、必要に応じて更に配合される添加剤との混合方法としては、特に限定されることなく、例えば、塩化ビニル樹脂微粒子を含むダスティング剤を除く成分をドライブレンドにより混合し、その後、ダスティング剤を添加、混合する方法が挙げられる。ここで、ドライブレンドには、ヘンシェルミキサーの使用が好ましい。また、ドライブレンド時の温度は、特に制限されることなく、５０℃以上が好ましく、７０℃以上がより好ましく、２００℃以下が好ましい。 <Method for Preparing Vinyl Chloride Resin Composition>
The vinyl chloride resin composition of the present invention can be prepared by mixing the components described above.
Here, the mixing method of the above (a) vinyl chloride resin, (b) plasticizer, (c) iron oxide, and an additive further blended as necessary is not particularly limited. For example, there may be mentioned a method in which components other than the dusting agent containing vinyl chloride resin fine particles are mixed by dry blending, and then the dusting agent is added and mixed. Here, it is preferable to use a Henschel mixer for the dry blending. Moreover, the temperature at the time of dry blending is not specifically limited, 50 degreeC or more is preferable, 70 degreeC or more is more preferable, and 200 degreeC or less is preferable.
＜塩化ビニル樹脂組成物の用途＞
　そして、得られた塩化ビニル樹脂組成物は、粉体成形に好適に用いることができ、パウダースラッシュ成形により好適に用いることができる。 <Uses of vinyl chloride resin composition>
And the obtained vinyl chloride resin composition can be used suitably for powder molding, and can be used suitably by powder slush molding.
（塩化ビニル樹脂成形体）
　本発明の塩化ビニル樹脂成形体は、上述した塩化ビニル樹脂組成物を、任意の方法で成形することにより得られることを特徴とする。そして、本発明の塩化ビニル樹脂成形体は、上述した塩化ビニル樹脂組成物の何れかを用いて形成され、少なくとも、（ａ）塩化ビニル樹脂と、（ｂ）可塑剤と、（ｃ）鉄酸化物を含んでいるため、発泡ポリウレタン成形体を裏打ちして用いた場合であっても、熱老化試験後における損失弾性率Ｅ”のピークトップ温度が十分低い。従って、本発明の塩化ビニル樹脂成形体は、自動車内装材、特に、自動車インスツルメントパネルの表皮として好適に用いることができる。 (Vinyl chloride resin molding)
The vinyl chloride resin molded article of the present invention is obtained by molding the above-described vinyl chloride resin composition by an arbitrary method. The vinyl chloride resin molded article of the present invention is formed using any of the vinyl chloride resin compositions described above, and includes at least (a) a vinyl chloride resin, (b) a plasticizer, and (c) iron oxidation. Therefore, even when the foamed polyurethane molding is used as a backing, the peak top temperature of the loss elastic modulus E ″ after the heat aging test is sufficiently low. Therefore, the vinyl chloride resin molding of the present invention is performed. The body can be suitably used as an automobile interior material, particularly as a skin of an automobile instrument panel.
＜塩化ビニル樹脂成形体の形成方法＞
　ここで、パウダースラッシュ成形により塩化ビニル樹脂成形体を形成する場合、パウダースラッシュ成形時の金型温度は、特に制限されることなく、２００℃以上とすることが好ましく、２２０℃以上とすることがより好ましく、３００℃以下とすることが好ましく、２８０℃以下とすることがより好ましい。 <Method for forming vinyl chloride resin molding>
Here, in the case of forming a vinyl chloride resin molded body by powder slush molding, the mold temperature at the time of powder slush molding is not particularly limited and is preferably 200 ° C. or higher, and preferably 220 ° C. or higher. More preferably, it is preferably 300 ° C. or less, and more preferably 280 ° C. or less.
　そして、塩化ビニル樹脂成形体を製造する際には、特に限定されることなく、例えば、以下の方法を用いることができる。即ち、上記温度範囲の金型に本発明の塩化ビニル樹脂組成物を振りかけて、５秒以上３０秒以下の間放置した後、余剰の塩化ビニル樹脂組成物を振り落とし、更に、任意の温度下、３０秒以上３分以下の間放置する。その後、金型を１０℃以上６０℃以下に冷却し、得られた本発明の塩化ビニル樹脂成形体を金型から脱型する。そして、金型の形状をかたどったシート状の成形体を得る。 And when manufacturing a vinyl chloride resin molding, it is not specifically limited, For example, the following methods can be used. That is, the vinyl chloride resin composition of the present invention is sprinkled on a mold in the above temperature range, left for 5 seconds to 30 seconds, and then the excess vinyl chloride resin composition is shaken off, and further at an arbitrary temperature. Leave for 30 seconds to 3 minutes. Thereafter, the mold is cooled to 10 ° C. or more and 60 ° C. or less, and the obtained vinyl chloride resin molded article of the present invention is removed from the mold. And the sheet-like molded object which modeled the shape of the metal mold | die is obtained.
（積層体）
　本発明の積層体は、発泡ポリウレタン成形体と、上述した塩化ビニル樹脂成形体の何れかとを有する。なお、塩化ビニル樹脂成形体は、通常、積層体の一方の表面を構成する。
　そして、本発明の積層体は、例えば、本発明の塩化ビニル樹脂組成物を用いて形成され、熱老化試験後における損失弾性率Ｅ”のピークトップ温度が低い塩化ビニル樹脂成形体を有しているため、自動車インスツルメントパネル等の自動車内装材として好適に用いることができる。 (Laminate)
The laminate of the present invention has a foamed polyurethane molded product and any of the vinyl chloride resin molded products described above. The vinyl chloride resin molded body usually constitutes one surface of the laminate.
And the laminated body of this invention is formed using the vinyl chloride resin composition of this invention, for example, and has a vinyl chloride resin molding with a low peak top temperature of the loss elastic modulus E "after a heat aging test. Therefore, it can be suitably used as an automobile interior material such as an automobile instrument panel.
　ここで、発泡ポリウレタン成形体と塩化ビニル樹脂成形体との積層方法は、特に限定されることなく、例えば、以下の方法を用いることができる。即ち、（１）発泡ポリウレタン成形体と、塩化ビニル樹脂成形体とを別途準備した後に、熱融着、熱接着、または、公知の接着剤などを用いることにより貼り合わせる方法；（２）塩化ビニル樹脂成形体上で発泡ポリウレタン成形体の原料となるイソシアネート類とポリオール類などとを反応させて重合を行うと共に、公知の方法によりポリウレタンの発泡を行うことにより、塩化ビニル樹脂成形体上に発泡ポリウレタン成形体を直接形成する方法；などが挙げられる。中でも、工程が簡素である点、および、種々の形状の積層体を得る場合においても塩化ビニル樹脂成形体と発泡ポリウレタン成形体とを強固に接着し易い点から、後者の方法（２）が好適である。 Here, the lamination method of the foamed polyurethane molded product and the vinyl chloride resin molded product is not particularly limited, and for example, the following method can be used. That is, (1) A method in which a foamed polyurethane molded product and a vinyl chloride resin molded product are separately prepared and then bonded together by heat fusion, thermal bonding, or using a known adhesive; (2) Vinyl chloride Polymerization is performed by reacting isocyanates, which are raw materials of the polyurethane foam molded body, and polyols on the resin molded body, and polyurethane is foamed by a known method to form polyurethane foam on the vinyl chloride resin molded body. And a method of directly forming a molded body. Among these, the latter method (2) is preferable because the process is simple and the vinyl chloride resin molded body and the polyurethane foam molded body can be firmly bonded to each other even in the case of obtaining laminated bodies having various shapes. It is.
　以下、本発明について実施例に基づき具体的に説明するが、本発明はこれら実施例に限定されるものではない。なお、以下の説明において、量を表す「％」および「部」は、特に断らない限り、質量基準である。
　そして、塩化ビニル樹脂成形体の加熱（熱老化試験）後における損失弾性率Ｅ”のピークトップ温度、塩化ビニル樹脂成形体の初期および加熱（熱老化試験）後における引張応力および引張伸び（常温および低温）、並びに、加熱（熱老化試験）による、塩化ビニル樹脂成形体の光沢変化は、下記の方法で評価した。 EXAMPLES Hereinafter, although this invention is demonstrated concretely based on an Example, this invention is not limited to these Examples. In the following description, “%” and “part” representing amounts are based on mass unless otherwise specified.
Then, the peak top temperature of the loss elastic modulus E ″ after heating (thermal aging test) of the vinyl chloride resin molded body, the tensile stress and the tensile elongation at the initial stage and after heating (thermal aging test) of the vinyl chloride resin molded body (normal temperature and The change in gloss of the vinyl chloride resin molded product due to low temperature) and heating (thermal aging test) was evaluated by the following method.
＜加熱試験後の損失弾性率Ｅ”のピークトップ温度＞
　発泡ポリウレタン成形体が裏打ちされた積層体を試料とした。当該試料をオーブンに入れ、温度１３０℃の環境下で６００時間加熱を行った。次に、加熱後の積層体から発泡ポリウレタン成形体を剥離して、塩化ビニル樹脂成形シートのみを準備した。
　得られた塩化ビニル樹脂成形シートを、幅１０ｍｍ×長さ４０ｍｍの寸法で打ち抜くことにより測定試料とした。そして、ＪＩＳ Ｋ７２４４－４に準拠して、周波数１０Ｈｚ、昇温速度２℃／分、測定温度－９０℃～＋１００℃の範囲で、当該測定試料についての損失弾性率Ｅ”のピークトップ温度（℃）を測定した。損失弾性率Ｅ”のピークトップ温度が低いほど、加熱（熱老化試験）後における塩化ビニル樹脂成形体の、低温での粘性が優れている。 <Peak top temperature of loss elastic modulus E "after heating test>
A laminated body lined with a foamed polyurethane molding was used as a sample. The sample was placed in an oven and heated for 600 hours in an environment at a temperature of 130 ° C. Next, the polyurethane foam molded body was peeled off from the heated laminate, and only a vinyl chloride resin molded sheet was prepared.
The obtained vinyl chloride resin molded sheet was punched out with a dimension of width 10 mm × length 40 mm to obtain a measurement sample. Then, according to JIS K7244-4, the peak top temperature (° C.) of the loss elastic modulus E ″ for the measurement sample in the range of frequency 10 Hz, temperature increase rate 2 ° C./min, measurement temperature −90 ° C. to + 100 ° C. The lower the peak top temperature of the loss modulus E ″, the better the viscosity at low temperature of the vinyl chloride resin molding after heating (thermal aging test).
＜引張応力および引張伸び＞
　塩化ビニル樹脂成形体の引張応力および引張伸びは、以下の通り、常温（２３℃）および低温（－２０℃）のそれぞれの条件おいて、初期（未加熱）および加熱（熱老化試験）後の引張応力および引張破断伸びを測定することで評価した。
＜＜常温での引張応力および引張伸び＞＞
［初期］
　得られた塩化ビニル樹脂成形シートを、ＪＩＳ Ｋ６２５１に記載の１号ダンベルで打ち抜き、ＪＩＳ Ｋ７１１３に準拠して、引張速度２００ｍｍ／分で、２３℃の常温下における引張応力および引張破断伸び（％）を測定した。引張破断伸びの値が大きいほど、初期（未加熱）の塩化ビニル樹脂成形体の引張伸びが良好である。
［加熱（熱老化試験）後］
　発泡ポリウレタン成形体が裏打ちされた積層体を試料とした。当該試料をオーブンに入れ、温度１３０℃の環境下で６００時間、加熱を行った。次に、加熱後の積層体から発泡ポリウレタン成形体を剥離して、塩化ビニル樹脂成形シートのみを準備した。そして、上記初期の場合と同様の条件にて、６００時間加熱後の塩化ビニル樹脂成形シートの引張応力および引張破断伸び（％）を測定した。引張破断伸びの値が大きいほど、加熱（熱老化試験）後における塩化ビニル樹脂成形体の引張伸びが良好である。
＜＜低温での引張応力および引張伸び＞＞
［初期］
　得られた塩化ビニル樹脂成形シートを、ＪＩＳ Ｋ６２５１に記載の１号ダンベルで打ち抜き、ＪＩＳ Ｋ７１１３に準拠して、引張速度２００ｍｍ／分で、－２０℃の低温下における引張応力および引張破断伸び（％）を測定した。引張破断伸びの値が大きいほど、初期（未加熱）の塩化ビニル樹脂成形体の低温での引張伸びが良好である。
［加熱（熱老化試験）後］
　発泡ポリウレタン成形体が裏打ちされた積層体を試料とした。当該試料をオーブンに入れ、温度１３０℃の環境下で６００時間、加熱を行った。次に、加熱後の積層体から発泡ポリウレタン成形体を剥離して、塩化ビニル樹脂成形シートのみを準備した。そして、上記初期の場合と同様の条件にて、６００時間加熱後の塩化ビニル樹脂成形シートの引張応力および引張破断伸び（％）を測定した。引張破断伸びの値が大きいほど、加熱（熱老化試験）後における塩化ビニル樹脂成形体の引張伸びが良好である。 <Tensile stress and tensile elongation>
The tensile stress and tensile elongation of the vinyl chloride resin molded product were as follows, at the normal temperature (23 ° C.) and at the low temperature (−20 ° C.), after the initial (unheated) and after heating (thermal aging test). Evaluation was made by measuring tensile stress and tensile elongation at break.
<< Tensile stress and tensile elongation at room temperature >>
[initial]
The obtained vinyl chloride resin molded sheet was punched with a No. 1 dumbbell described in JIS K6251, and in accordance with JIS K7113, the tensile stress and tensile breaking elongation (%) at a normal temperature of 23 ° C. at a tensile speed of 200 mm / min. Was measured. The larger the value of the tensile elongation at break, the better the tensile elongation of the initial (unheated) vinyl chloride resin molded body.
[After heating (heat aging test)]
A laminated body lined with a foamed polyurethane molding was used as a sample. The sample was placed in an oven and heated for 600 hours in an environment of 130 ° C. Next, the polyurethane foam molded body was peeled off from the heated laminate, and only a vinyl chloride resin molded sheet was prepared. Then, under the same conditions as in the initial case, the tensile stress and the tensile elongation at break (%) of the vinyl chloride resin molded sheet after heating for 600 hours were measured. The larger the tensile elongation at break, the better the tensile elongation of the vinyl chloride resin molded article after heating (thermal aging test).
<< Tensile stress and tensile elongation at low temperature >>
[initial]
The obtained vinyl chloride resin molded sheet was punched with a No. 1 dumbbell described in JIS K6251, and in accordance with JIS K7113, the tensile stress and tensile elongation at break at a low temperature of −20 ° C. at a tensile speed of 200 mm / min (% ) Was measured. The larger the value of tensile elongation at break, the better the tensile elongation at low temperature of the initial (unheated) vinyl chloride resin molded body.
[After heating (heat aging test)]
A laminated body lined with a foamed polyurethane molding was used as a sample. The sample was placed in an oven and heated for 600 hours in an environment of 130 ° C. Next, the polyurethane foam molded body was peeled off from the heated laminate, and only a vinyl chloride resin molded sheet was prepared. Then, under the same conditions as in the initial case, the tensile stress and the tensile elongation at break (%) of the vinyl chloride resin molded sheet after heating for 600 hours were measured. The larger the tensile elongation at break, the better the tensile elongation of the vinyl chloride resin molded article after heating (thermal aging test).
＜光沢変化＞
　発泡ポリウレタン成形体が裏打ちされた積層体を７ｃｍ×１４ｃｍの寸法に切り出して試験片とした。
　ギヤーオーブン中に、１３０℃の条件で試験片を６００時間放置して、放置前後の表皮の光沢度の変化量（Δグロス）を求めた。
　具体的には、表皮の光沢度の変化量（Δグロス）は、試験片の表皮側の光沢度（入射角６０°）をグロスメータ（東京電色社製、製品名「グロスメータＧＰ－６０」）で測定し、放置前の光沢度と放置後の光沢度との差であるΔグロス（放置後の光沢度－放置前の光沢度）を求めた。Δグロスがゼロに近いほど、光沢度の安定性に優れる。 <Gloss change>
The laminate on which the polyurethane foam molding was lined was cut into a size of 7 cm × 14 cm to obtain a test piece.
The test piece was left in a gear oven at 130 ° C. for 600 hours, and the amount of change in glossiness (Δ gloss) of the skin before and after being left was determined.
Specifically, the amount of change in glossiness (Δ gloss) of the skin is determined by the glossiness (incident angle 60 °) on the skin side of the test piece as a gloss meter (product name “Glossmeter GP-60, manufactured by Tokyo Denshoku Co., Ltd.”). )) And Δ gloss (gloss after leaving-gloss before leaving), which is the difference between the gloss before leaving and the gloss after leaving. The closer the Δ gloss is to zero, the better the gloss stability.
（実施例１）
＜塩化ビニル樹脂組成物の調製＞
　表１に示す配合成分のうち、可塑剤（トリメリット酸エステル、ピロメリット酸エステル、およびエポキシ化大豆油）と、ダスティング剤である塩化ビニル樹脂微粒子とを除く成分をヘンシェルミキサーに入れて混合した。そして、混合物の温度が８０℃に上昇した時点で上記可塑剤を全て添加し、更に昇温することにより、ドライアップ（可塑剤が、塩化ビニル樹脂である塩化ビニル樹脂粒子に吸収されて、上記混合物がさらさらになった状態をいう。）させた。その後、ドライアップさせた混合物が温度７０℃以下に冷却された時点でダスティング剤である塩化ビニル樹脂微粒子を添加し、塩化ビニル樹脂組成物を調製した。
＜塩化ビニル樹脂成形体の形成＞
　上述で得られた塩化ビニル樹脂組成物を、温度２５０℃に加熱したシボ付き金型に振りかけ、８秒～２０秒程度の任意の時間放置して溶融させた後、余剰の塩化ビニル樹脂組成物を振り落とした。その後、当該塩化ビニル樹脂組成物を振りかけたシボ付き金型を、温度２００℃に設定したオーブン内に静置し、静置から６０秒経過した時点で当該シボ付き金型を冷却水で冷却した。金型温度が４０℃まで冷却された時点で、塩化ビニル樹脂成形体としての、１４５ｍｍ×１７５ｍｍ×１ｍｍの塩化ビニル樹脂成形シートを金型から脱型した。
　そして、得られた塩化ビニル樹脂成形シートについて、上述の方法に従って、常温および低温での引張応力および引張伸び（初期）を評価した。結果を表１に示す。
＜積層体の形成＞
　得られた塩化ビニル樹脂成形シートを、２００ｍｍ×３００ｍｍ×１０ｍｍの金型の中に、シボ付き面を下にして敷いた。
　別途、プロピレングリコールのＰＯ（プロピレンオキサイド）・ＥＯ（エチレンオキサイド）ブロック付加物（水酸基価２８、末端ＥＯ単位の含有量＝１０％、内部ＥＯ単位の含有量４％）を５０部、グリセリンのＰＯ・ＥＯブロック付加物（水酸基価２１、末端ＥＯ単位の含有量＝１４％）を５０部、水を２．５部、トリエチレンジアミンのエチレングリコール溶液（東ソー社製、商品名「ＴＥＤＡ－Ｌ３３」）を０．２部、トリエタノールアミンを１．２部、トリエチルアミンを０．５部、および整泡剤（信越化学工業製、商品名「Ｆ－１２２」）を０．５部混合して、ポリオール混合物を得た。また、得られたポリオール混合物とポリメチレンポリフェニレンポリイソシアネート（ポリメリックＭＤＩ）とを、インデックスが９８になる比率で混合した混合液を調製した。そして、調製した混合液を、上述の通り金型内に敷かれた塩化ビニル樹脂成形シートの上に注いだ。その後、３４８ｍｍ×２５５ｍｍ×１０ｍｍのアルミニウム板で上記金型に蓋をして、金型を密閉した。金型を密閉してから５分間放置することにより、表皮としての塩化ビニル樹脂成形シート（厚さ：１ｍｍ）に、発泡ポリウレタン成形体（厚み：９ｍｍ、密度：０．１８ｇ／ｃｍ３）が裏打ちされた積層体が、金型内で形成された。
　そして、形成された積層体を金型から取り出し、積層体における塩化ビニル樹脂シートについて、上述の方法に従って、加熱（熱老化試験）後における損失弾性率Ｅ”のピークトップ温度、常温および低温での引張応力および引張伸び（加熱（熱老化試験）後）、並びに、加熱（熱老化試験）による光沢変化を評価した。結果を表１に示す。 (Example 1)
<Preparation of vinyl chloride resin composition>
Of the ingredients shown in Table 1, ingredients other than plasticizers (trimellitic acid ester, pyromellitic acid ester, and epoxidized soybean oil) and dusting agent vinyl chloride resin fine particles are placed in a Henschel mixer and mixed. did. Then, when the temperature of the mixture rises to 80 ° C., all of the plasticizer is added, and the temperature is further raised to dry up (the plasticizer is absorbed by the vinyl chloride resin particles, which are vinyl chloride resins, The mixture was further improved.) Thereafter, when the dried-up mixture was cooled to a temperature of 70 ° C. or less, vinyl chloride resin fine particles as a dusting agent were added to prepare a vinyl chloride resin composition.
<Formation of vinyl chloride resin molding>
The vinyl chloride resin composition obtained above is sprinkled on a mold with a texture heated to a temperature of 250 ° C., left to melt for an arbitrary time of about 8 to 20 seconds, and then an excess vinyl chloride resin composition. Shaken off. Thereafter, the embossed mold sprinkled with the vinyl chloride resin composition was allowed to stand in an oven set at a temperature of 200 ° C., and the embossed mold was cooled with cooling water when 60 seconds had elapsed after standing. . When the mold temperature was cooled to 40 ° C., a 145 mm × 175 mm × 1 mm vinyl chloride resin molded sheet as a vinyl chloride resin molded body was removed from the mold.
And about the obtained vinyl chloride resin molded sheet, according to the above-mentioned method, the normal temperature and low temperature tensile stress and tensile elongation (initial stage) were evaluated. The results are shown in Table 1.
<Formation of laminate>
The obtained vinyl chloride resin molded sheet was laid in a 200 mm × 300 mm × 10 mm mold with the embossed surface down.
Separately, 50 parts of propylene glycol PO (propylene oxide) / EO (ethylene oxide) block adduct (hydroxyl value 28, content of terminal EO unit = 10%, content of internal EO unit 4%), PO of glycerin -50 parts of EO block adduct (hydroxyl value 21, content of terminal EO unit = 14%), 2.5 parts of water, ethylene glycol solution of triethylenediamine (trade name "TEDA-L33" manufactured by Tosoh Corporation) 0.2 parts, 1.2 parts triethanolamine, 0.5 parts triethylamine, and 0.5 parts foam stabilizer (trade name “F-122” manufactured by Shin-Etsu Chemical Co., Ltd.) A mixture was obtained. Moreover, the liquid mixture which mixed the obtained polyol mixture and polymethylene polyphenylene polyisocyanate (polymeric MDI) in the ratio from which the index becomes 98 was prepared. And the prepared liquid mixture was poured on the vinyl chloride resin molded sheet laid in the metal mold | die as above-mentioned. Thereafter, the mold was covered with an aluminum plate of 348 mm × 255 mm × 10 mm, and the mold was sealed. When the mold is sealed and left for 5 minutes, a foamed polyurethane molded product (thickness: 9 mm, density: 0.18 g / cm 3 ) is lined on a vinyl chloride resin molded sheet (thickness: 1 mm) as the skin. The laminated body formed was formed in a mold.
Then, the formed laminate is taken out from the mold, and the vinyl chloride resin sheet in the laminate is subjected to the above-mentioned method at the peak top temperature, normal temperature and low temperature of the loss elastic modulus E ″ after heating (thermal aging test). Tensile stress and tensile elongation (after heating (thermal aging test)) and gloss change due to heating (thermal aging test) were evaluated, and the results are shown in Table 1.
（実施例２～４）
　塩化ビニル樹脂組成物の調製時に、鉄酸化物の量および／または平均粒子径を表１のように変更した以外は、実施例１と同様にして、塩化ビニル樹脂組成物、塩化ビニル樹脂成形シートおよび積層体を製造した。
　そして、実施例１と同様の方法により評価を行った。結果を表１に示す。 (Examples 2 to 4)
A vinyl chloride resin composition and a vinyl chloride resin molded sheet were prepared in the same manner as in Example 1 except that the amount of iron oxide and / or the average particle size was changed as shown in Table 1 when preparing the vinyl chloride resin composition. And laminates were produced.
And it evaluated by the method similar to Example 1. FIG. The results are shown in Table 1.
（比較例１）
　塩化ビニル樹脂組成物の調製時に、鉄酸化物を使用しなかった以外は、実施例１と同様にして、塩化ビニル樹脂組成物、塩化ビニル樹脂成形シートおよび積層体を製造した。
　そして、実施例１と同様の方法により評価を行った。結果を表１に示す。 (Comparative Example 1)
A vinyl chloride resin composition, a vinyl chloride resin molded sheet, and a laminate were produced in the same manner as in Example 1 except that no iron oxide was used when preparing the vinyl chloride resin composition.
And it evaluated by the method similar to Example 1. FIG. The results are shown in Table 1.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
１）大洋塩ビ社製、製品名「ＴＨ－２８００」(懸濁重合法、平均重合度：２８００、平均粒子径：１４５μｍ)
２）新第一塩ビ社製、製品名「ＺＥＳＴ　ＰＱＬＴＸ」(乳化重合法、平均重合度：８００、平均粒子径：１．８μｍ)
３）東ソー社製、製品名「リューロンペースト（登録商標）７６１」(乳化重合法、平均重合度：２１００、平均粒子径：１．７μｍ)
４）花王社製、製品名「トリメックスＮ－０８」
５）ＡＤＥＫＡ社製、製品名「アデカサイザー　ＵＬ－８０」
６）ＡＤＥＫＡ社製、製品名「アデカサイザー　Ｏ－１３０Ｓ」
７）ＪＦＥケミカル社製、製品名「中純度酸化鉄ＪＣ－ＤＳ」（平均粒子径：０．７０～０．９０μｍ）
８）ＪＦＥケミカル社製、製品名「中純度酸化鉄ＪＣ－Ｗ」（平均粒子径：０．５５～０．７５μｍ）
９）協和化学工業社製、製品名「アルカマイザー５」
１０）水澤化学工業社製、製品名「ＭＩＺＵＫＡＬＩＺＥＲ　ＤＳ」
１１）昭和電工社製、製品名「カレンズＤＫ－１」
１２）ＡＤＥＫＡ社製、製品名「アデカスタブ　５２２Ａ」
１３）ＡＤＥＫＡ社製、製品名「アデカスタブ　ＬＡ－７２」
１４）堺化学工業社、製品名「ＳＡＫＡＩ　ＳＺ２０００」
１５）ＡＤＥＫＡ社製、製品名「アデカスタブ　ＬＳ－１２」
１６）信越シリコーン社製、製品名「ＫＦ－９７０１」（シラノール両末端変性シリコーンオイル）
１７）大日精化社製、製品名「ＤＡ　ＰＸ　１７２０（Ａ）ブラック」 1) Product name “TH-2800” (manufactured by Taiyo PVC Co., Ltd., suspension polymerization method, average degree of polymerization: 2800, average particle size: 145 μm)
2) Product name “ZEST PQLTX” manufactured by Shin Daiichi PVC Co., Ltd. (emulsion polymerization method, average polymerization degree: 800, average particle diameter: 1.8 μm)
3) Product name “Luron Paste (registered trademark) 761” manufactured by Tosoh Corporation (emulsion polymerization method, average polymerization degree: 2100, average particle diameter: 1.7 μm)
4) Product name “Trimex N-08” manufactured by Kao Corporation
5) Product name "Adekasizer UL-80" manufactured by ADEKA
6) Product name "Adekasizer O-130S" manufactured by ADEKA
7) Product name “Medium purity iron oxide JC-DS” (average particle size: 0.70 to 0.90 μm), manufactured by JFE Chemical Co., Ltd.
8) Product name “Medium purity iron oxide JC-W” (average particle size: 0.55 to 0.75 μm), manufactured by JFE Chemical Co., Ltd.
9) Product name “Alkamizer 5” manufactured by Kyowa Chemical Industry Co., Ltd.
10) Product name "MIZUKALIZER DS" manufactured by Mizusawa Chemical Industry Co., Ltd.
11) Product name “Karenz DK-1” manufactured by Showa Denko KK
12) Product name “ADEKA STAB 522A” manufactured by ADEKA
13) Product name "ADK STAB LA-72" manufactured by ADEKA
14) Sakai Chemical Industry Co., Ltd., product name “SAKAI SZ2000”
15) Product name “ADK STAB LS-12” manufactured by ADEKA
16) Product name “KF-9701” manufactured by Shin-Etsu Silicone Co., Ltd. (silanol end-modified silicone oil)
17) Product name “DA PX 1720 (A) Black” manufactured by Dainichi Seika Co., Ltd.
　表１より、（ａ）塩化ビニル樹脂、（ｂ）可塑剤、および（ｃ）鉄酸化物を含む塩化ビニル樹脂組成物を用いた実施例１～４は、（ａ）塩化ビニル樹脂および（ｂ）可塑剤を含むが、（ｃ）鉄酸化物を含まない塩化ビニル樹脂組成物を用いた比較例１に比して、塩化ビニル樹脂成形体を発泡ポリウレタン成形体と積層して用いた場合に、塩化ビニル樹脂成形体の熱老化試験後における損失弾性率Ｅ”のピークトップ温度を低下させうることが分かる。 From Table 1, Examples 1 to 4 using a vinyl chloride resin composition containing (a) a vinyl chloride resin, (b) a plasticizer, and (c) an iron oxide are shown in (a) a vinyl chloride resin and (b In the case where the vinyl chloride resin molded article is used by being laminated with the foamed polyurethane molded article as compared with Comparative Example 1 using a vinyl chloride resin composition containing a plasticizer but not containing (c) iron oxide. It can be seen that the peak top temperature of the loss elastic modulus E ″ after the heat aging test of the vinyl chloride resin molding can be lowered.
　本発明によれば、発泡ポリウレタン成形体を裏打ちして用いた場合に、熱老化試験後における損失弾性率Ｅ”のピークトップ温度が低い塩化ビニル樹脂成形体を提供することができる。また、本発明は、当該塩化ビニル樹脂成形体を形成可能な塩化ビニル樹脂組成物、および、当該塩化ビニル樹脂成形体を有する積層体を提供することができる。 According to the present invention, when a foamed polyurethane molded product is used as a backing, a vinyl chloride resin molded product having a low peak top temperature of loss elastic modulus E ″ after a heat aging test can be provided. The invention can provide a vinyl chloride resin composition capable of forming the vinyl chloride resin molded body, and a laminate having the vinyl chloride resin molded body.

Claims (10)

  1. 　（ａ）塩化ビニル樹脂、（ｂ）可塑剤、および（ｃ）鉄酸化物を含む、塩化ビニル樹脂組成物。 A vinyl chloride resin composition comprising (a) a vinyl chloride resin, (b) a plasticizer, and (c) an iron oxide.
  2. 　前記（ｃ）鉄酸化物の含有量が、前記（ａ）塩化ビニル樹脂１００質量部当たり０．０１質量部以上０．８質量部以下である、請求項１に記載の塩化ビニル樹脂組成物。 The vinyl chloride resin composition according to claim 1, wherein the content of the (c) iron oxide is 0.01 parts by mass or more and 0.8 parts by mass or less per 100 parts by mass of the (a) vinyl chloride resin.
  3. 　前記（ｃ）鉄酸化物の平均粒子径が０．４μｍ以上１．２μｍ以下である、請求項１または２に記載の塩化ビニル樹脂組成物。 The vinyl chloride resin composition according to claim 1 or 2, wherein the (c) iron oxide has an average particle size of 0.4 µm or more and 1.2 µm or less.
  4. 　前記（ｂ）可塑剤の含有量が、前記（ａ）塩化ビニル樹脂１００質量部当たり３０質量部以上２００質量部以下である、請求項１～３の何れかに記載の塩化ビニル樹脂組成物。 4. The vinyl chloride resin composition according to claim 1, wherein the content of the (b) plasticizer is 30 parts by mass or more and 200 parts by mass or less per 100 parts by mass of the (a) vinyl chloride resin.
  5. 　前記（ｂ）可塑剤が、トリメリット酸エステルとピロメリット酸エステルの少なくとも一方を含む、請求項１～４の何れかに記載の塩化ビニル樹脂組成物。 The vinyl chloride resin composition according to any one of claims 1 to 4, wherein the (b) plasticizer contains at least one of trimellitic acid ester and pyromellitic acid ester.
  6. 　粉体成形に用いられる、請求項１～５の何れかに記載の塩化ビニル樹脂組成物。 6. The vinyl chloride resin composition according to claim 1, which is used for powder molding.
  7. 　パウダースラッシュ成形に用いられる、請求項６に記載の塩化ビニル樹脂組成物。 The vinyl chloride resin composition according to claim 6, which is used for powder slush molding.
  8. 　請求項１～７の何れかに記載の塩化ビニル樹脂組成物を成形してなる、塩化ビニル樹脂成形体。 A vinyl chloride resin molded article obtained by molding the vinyl chloride resin composition according to any one of claims 1 to 7.
  9. 　自動車インスツルメントパネル表皮用である、請求項８に記載の塩化ビニル樹脂成形体。 The vinyl chloride resin molded article according to claim 8, which is used for an automobile instrument panel skin.
  10. 　発泡ポリウレタン成形体と、請求項８または９に記載の塩化ビニル樹脂成形体とを有する、積層体。 A laminate having a foamed polyurethane molded product and the vinyl chloride resin molded product according to claim 8 or 9.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09272769A (en) * 1996-04-05 1997-10-21 Showa Kk Chlorinated resin composition
JP2008201929A (en) * 2007-02-21 2008-09-04 Fujitsu Ltd Chlorine-containing resin composition and molded article formed of chlorine-containing resin composition
WO2014091867A1 (en) * 2012-12-12 2014-06-19 日本ゼオン株式会社 Vinyl chloride resin composition for powder molding, vinyl chloride resin molded article and laminate
WO2015141182A1 (en) * 2014-03-19 2015-09-24 日本ゼオン株式会社 Vinyl chloride resin composition for powder molding, vinyl chloride resin molded article, and laminate
WO2017170037A1 (en) * 2016-03-29 2017-10-05 日本ゼオン株式会社 Vinyl chloride resin composition, vinyl chloride resin molded article, and laminate

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0931280A (en) * 1995-07-13 1997-02-04 Bando Chem Ind Ltd Vinyl chloride resin film
JPH0952995A (en) * 1995-08-09 1997-02-25 Achilles Corp Vinyl chloride-based resin film
JP2008156494A (en) * 2006-12-25 2008-07-10 Sanyo Chem Ind Ltd Resin powder composition for slush molding use

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09272769A (en) * 1996-04-05 1997-10-21 Showa Kk Chlorinated resin composition
JP2008201929A (en) * 2007-02-21 2008-09-04 Fujitsu Ltd Chlorine-containing resin composition and molded article formed of chlorine-containing resin composition
WO2014091867A1 (en) * 2012-12-12 2014-06-19 日本ゼオン株式会社 Vinyl chloride resin composition for powder molding, vinyl chloride resin molded article and laminate
WO2015141182A1 (en) * 2014-03-19 2015-09-24 日本ゼオン株式会社 Vinyl chloride resin composition for powder molding, vinyl chloride resin molded article, and laminate
WO2017170037A1 (en) * 2016-03-29 2017-10-05 日本ゼオン株式会社 Vinyl chloride resin composition, vinyl chloride resin molded article, and laminate

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