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

Abstract

Provided is a vinyl chloride resin composition capable of forming a vinyl chloride resin molded article in which a change in gloss is suppressed. This vinyl chloride resin composition contains a vinyl chloride resin, a plasticizer, and a hindered amine light stabilizer having a molecular weight of 550-1500 (inclusive), and the content of the plasticizer is 75 parts by mass or more with respect to 100 parts by mass of the vinyl chloride resin. The vinyl chloride resin composition is preferably used for powder molding.

Description

Technical Field

[0001] The present invention relates to a vinyl chloride resin composition, a vinyl chloride resin molded body and a laminate. Background Art

[0002] Vinyl chloride resin is generally used in various applications because of its excellent properties such as cold resistance, heat resistance, and oil resistance.

[0003] Specifically, for example, in the formation of automobile interior parts such as automobile instrument panels and door trims, automobile interior materials such as skins formed of vinyl chloride resin molded bodies and laminates formed by lining the skins formed of vinyl chloride resin molded bodies with foamed bodies such as foamed polyurethane are used.

[0004] Furthermore, the vinyl chloride resin molded body constituting the surface of automobile interior parts such as automobile instrument panels is manufactured by powder molding a vinyl chloride resin composition containing vinyl chloride resin, plasticizers, stabilizers, and additives such as pigments using a known molding method such as powder slush molding (for example, refer to Patent Document 1).

[0005] Specifically, for example, in Patent Document 1, a skin composed of a vinyl chloride resin molded body is produced by powder slush molding a vinyl chloride resin composition containing a vinyl chloride resin, trimellitate, and a plasticizer such as a predetermined polyester, a stabilizer, and additives such as a pigment.

[0006] Prior art literature

[0007] Patent Literature

[0008] Patent document 1: International Publication No. 2020 / 090556. Summary of the invention

[0009] Problem that the invention aims to solve

[0010] Here, from the viewpoint of improving the appearance stability of vinyl chloride resin molded articles, it is required to suppress the change in surface gloss of vinyl chloride resin molded articles caused by irradiation with light or the like (hereinafter sometimes simply referred to as "gloss change of vinyl chloride resin molded articles").

[0011] However, the above-mentioned conventional vinyl chloride resin composition has room for improvement in terms of suppressing the change in gloss of a vinyl chloride resin molded article formed using the vinyl chloride resin composition.

[0012] Therefore, an object of the present invention is to provide a vinyl chloride resin composition capable of forming a vinyl chloride resin molded body with suppressed gloss change.

[0013] Another object of the present invention is to provide a vinyl chloride resin molded article in which gloss change is suppressed.

[0014] Furthermore, an object of the present invention is to provide a laminate having the vinyl chloride resin molded article.

[0015] Solutions for solving problems

[0016] The present inventors have conducted intensive research with the purpose of solving the above-mentioned problems. Then, the present inventors have found that if a vinyl chloride resin composition comprising a vinyl chloride resin, a plasticizer in a predetermined amount or more, and a hindered amine-based light stabilizer having a molecular weight within a predetermined range is used, the gloss change of a vinyl chloride resin molded body formed using the vinyl chloride resin composition can be suppressed, thereby completing the present invention.

[0017] That is, the object of the present invention is to advantageously solve the above-mentioned problems. The present invention is [1] a vinyl chloride resin composition, which comprises a vinyl chloride resin, a plasticizer and a hindered amine-based light stabilizer having a molecular weight of 550 or more and 1500 or less, wherein the content of the above-mentioned plasticizer is 75 parts by mass or more relative to 100 parts by mass of the above-mentioned vinyl chloride resin.

[0018] According to the vinyl chloride resin composition comprising a vinyl chloride resin, a plasticizer in a predetermined amount or more, and a hindered amine light stabilizer having a molecular weight within a predetermined range, a vinyl chloride resin molded article having suppressed gloss change can be formed.

[0019] [2] In the vinyl chloride resin composition of [1] above, the content of the hindered amine light stabilizer is preferably 0.01 parts by mass or more and 20 parts by mass or less per 100 parts by mass of the vinyl chloride resin.

[0020] If the content of the hindered amine light stabilizer is within the above-specified range, the gloss change of the formed vinyl chloride resin molded body can be further suppressed, and the change in color tone (hereinafter, sometimes referred to as "color tone change") and surface stickiness of the vinyl chloride resin molded body caused by light irradiation or the like can be suppressed. In addition, if the content of the hindered amine light stabilizer is within the above-specified range, the tensile elongation (particularly the tensile elongation at low temperature) of the formed vinyl chloride resin molded body can be improved.

[0021] [3] In the vinyl chloride resin composition of [1] or [2], the hindered amine light stabilizer preferably has a monovalent organic group represented by the following formula (I):

[0022] [Chemical formula 1]

[0023]

[0024] [In formula (I), R 1 is a hydrogen atom or an alkyl group, and "*" represents a bonding bond.]

[0025] When the hindered amine light stabilizer has an organic group represented by the above formula (I), the gloss change of the formed vinyl chloride resin molded article can be further suppressed.

[0026] [4] In the vinyl chloride resin composition of [3], it is preferred that the R 1 It is methyl.

[0027] If R in the above formula (I) 1 When the group is a methyl group, the gloss change of the formed vinyl chloride resin molded article can be further suppressed.

[0028] [5] In the vinyl chloride resin composition according to any one of [1] to [4], the hindered amine light stabilizer preferably has a monovalent organic group represented by the following formula (II):

[0029] [Chemical formula 2]

[0030]

[0031] [In formula (II), R 2 and R 3 Each is independently a hydrogen atom or an alkyl group, and "*" represents a bonding bond.]

[0032] When the hindered amine light stabilizer has an organic group represented by the above formula (II), the gloss change of the formed vinyl chloride resin molded article can be further suppressed.

[0033] [6] In the vinyl chloride resin composition of [5], it is preferred that the R 2 and the above R 3 All are tert-butyl.

[0034] If R in the above formula (II) 2 and R 3 When all of them are tert-butyl groups, the gloss change of the formed vinyl chloride resin molded article can be further suppressed.

[0035] [7] In the vinyl chloride resin composition of any one of [1] to [6] above, the hindered amine light stabilizer preferably contains a compound represented by the following formula (III):

[0036] [Chemical formula 3]

[0037]

[0038] When the compound represented by the above formula (III) is used as the hindered amine-based light stabilizer, the gloss change of the formed vinyl chloride resin molded article can be further suppressed.

[0039] [8] In the vinyl chloride resin composition according to any one of [1] to [7], the plasticizer preferably contains at least one of trimellitic acid ester and polyester.

[0040] When at least one of trimellitic acid ester and polyester is used as a plasticizer, the tensile properties (tensile elongation and tensile stress) of the resulting vinyl chloride resin molded article can be improved.

[0041] [9] The vinyl chloride resin composition of the above-mentioned [1] to [8] preferably further contains a cross-linked vinyl chloride resin.

[0042] If a cross-linked vinyl chloride resin is further used, the powder fluidity of the vinyl chloride resin composition can be improved while suppressing the stickiness of the surface of the formed vinyl chloride resin molded body. In addition, if a cross-linked vinyl chloride resin is further used, the gloss change of the formed vinyl chloride resin molded body can be further suppressed.

[0043]

[10] The vinyl chloride resin composition of the above-mentioned [1] to [9] is preferably used for powder molding.

[0044] When the vinyl chloride resin composition is used for powder molding, a vinyl chloride resin molded body which can be suitably used as, for example, an automobile interior material such as an automobile instrument panel skin can be easily obtained.

[0045]

[11] The vinyl chloride resin composition of the above-mentioned [1] to

[10] is preferably used for powder slush molding.

[0046] When the vinyl chloride resin composition is used for powder slush molding, it is easier to obtain a vinyl chloride resin molded body which can be preferably used as an automobile interior material such as a surface skin for automobile instrument panels.

[0047] In addition, the object of the present invention is to advantageously solve the above-mentioned problems. The present invention is

[12] a vinyl chloride resin molded product, which is obtained by molding the vinyl chloride resin composition of any one of the above [1] to

[11] .

[0048] As described above, the vinyl chloride resin molded article obtained by molding the vinyl chloride resin composition of the present invention has suppressed gloss changes and is excellent in appearance stability.

[0049]

[13] The vinyl chloride resin molded article described in

[12] is preferably used for automobile instrument panel surface skin.

[0050] The vinyl chloride resin molded article of the present invention can be suitably used as a surface skin of an automobile instrument panel which has suppressed gloss change and excellent appearance stability.

[0051] Furthermore, the present invention aims to advantageously solve the above-mentioned problems. The present invention is

[14] a laminate comprising a foamed polyurethane molded product and the vinyl chloride resin molded product of

[12] or

[13] above.

[0052] The laminate comprising the foamed polyurethane molded article and the vinyl chloride resin molded article of the present invention has a vinyl chloride resin molded article portion in which gloss change is suppressed and the appearance stability is excellent.

[0053]

[15] The laminate of

[14] is preferably used for automobile instrument panels.

[0054] As described above, when the laminate of the present invention is used for an automobile instrument panel, it is possible to suppress the gloss change of the surface of the manufactured automobile instrument panel and improve the appearance stability.

[0055] Effects of the Invention

[0056] According to the present invention, there can be provided a vinyl chloride resin composition capable of forming a vinyl chloride resin molded body with suppressed gloss change.

[0057] Furthermore, according to the present invention, a vinyl chloride resin molded body in which gloss change is suppressed can be provided.

[0058] Furthermore, according to the present invention, a laminated body having the vinyl chloride resin molded body can be provided. DETAILED DESCRIPTION

[0059] Hereinafter, embodiments of the present invention will be described in detail.

[0060] The vinyl chloride resin composition of the present invention can be used, for example, to form the vinyl chloride resin molded body of the present invention. Furthermore, the vinyl chloride resin molded body formed using the vinyl chloride resin composition of the present invention can be suitably used as an automobile interior material such as a surface skin of automobile interior parts such as automobile instrument panels and door interiors.

[0061] In addition, the vinyl chloride resin molded body of the present invention can be used, for example, when forming the laminate of the present invention. Moreover, the laminate formed using the vinyl chloride resin molded body of the present invention can be suitably used as an automobile interior material used when manufacturing automobile interior parts such as automobile instrument panels and door interiors.

[0062] (Vinyl chloride resin composition)

[0063] The vinyl chloride resin composition of the present invention is characterized by comprising (a) a vinyl chloride resin, (b) a plasticizer, and (c) a hindered amine light stabilizer having a molecular weight within a predetermined range (hereinafter, sometimes simply referred to as "(c) hindered amine light stabilizer").

[0064] Furthermore, the vinyl chloride resin composition of the present invention may further contain (d) a cross-linked vinyl chloride resin.

[0065] Furthermore, the vinyl chloride resin composition of the present invention may further optionally contain additives other than the above-mentioned (a) vinyl chloride resin, (b) plasticizer, (c) hindered amine light stabilizer and (d) crosslinked vinyl chloride resin.

[0066] Furthermore, according to the vinyl chloride resin composition of the present invention, a vinyl chloride resin molded body with suppressed gloss change can be formed.

[0067] Therefore, by using the vinyl chloride resin composition of the present invention, it is possible to obtain a vinyl chloride resin molded article suitable as an automobile interior material such as an automobile instrument panel skin or a door trim skin.

[0068] Furthermore, for example, from the viewpoint that a vinyl chloride resin molded body which can be favorably used as an automobile interior material can be easily obtained using the vinyl chloride resin composition of the present invention, the vinyl chloride resin composition of the present invention is preferably used for powder molding, and more preferably for powder slush molding.

[0069] <(a) Vinyl chloride resin>

[0070] As the (a) vinyl chloride resin, a granular vinyl chloride resin is generally used. Moreover, as the (a) vinyl chloride resin, for example, one or two or more vinyl chloride resin particles can be contained, and one or two or more vinyl chloride resin microparticles can be contained arbitrarily. Among them, the (a) vinyl chloride resin preferably contains at least vinyl chloride resin particles, and more preferably contains vinyl chloride resin particles and vinyl chloride resin microparticles.

[0071] Furthermore, the (a) vinyl chloride resin can be produced by any conventionally known production method such as suspension polymerization, emulsion polymerization, solution polymerization, or bulk polymerization.

[0072] In the present specification, "resin particles" refer to particles having a particle size of 30 μm or more, and "resin fine particles" refer to particles having a particle size of less than 30 μm.

[0073] In addition, as (a) vinyl chloride resin, in addition to homopolymers composed of vinyl chloride monomer units, vinyl chloride copolymers preferably containing 50% by mass or more, more preferably containing 70% by mass or more of vinyl chloride monomer units can also be cited. Moreover, as specific examples of monomers (comonomers) that can constitute vinyl chloride copolymers and can be copolymerized with vinyl chloride monomers, for example, monomers described in International Publication No. 2016 / 098344 can be used. In addition, these components can be used alone or in combination of two or more in any ratio.

[0074] In the present invention, the (a) vinyl chloride resin is an uncrosslinked vinyl chloride resin. That is, the (a) vinyl chloride resin does not include the (d) crosslinked vinyl chloride resin described later.

[0075] <<Vinyl chloride resin granules>>

[0076] In a vinyl chloride resin composition, vinyl chloride resin particles generally function as a base resin (substrate). In addition, the vinyl chloride resin particles are preferably produced by a suspension polymerization method.

[0077] [Average degree of polymerization]

[0078] Moreover, the average degree of polymerization of the vinyl chloride resin constituting the vinyl chloride resin particles is preferably 800 or more, more preferably 1000 or more, preferably 5000 or less, more preferably 3000 or less, and further preferably 2800 or less. If the average degree of polymerization of the vinyl chloride resin constituting the vinyl chloride resin particles is above the above lower limit, it is possible to sufficiently ensure the physical strength of the vinyl chloride resin molded body formed using the vinyl chloride resin composition while making good tensile properties, especially tensile elongation. Moreover, the vinyl chloride resin molded body with good tensile elongation can be suitably used as an automotive interior material such as the skin of an automotive instrument panel that has excellent ductility and does not scatter fragments but cracks as designed when the airbag is inflated and deployed. On the other hand, if the average degree of polymerization of the vinyl chloride resin constituting the vinyl chloride resin particles is below the above upper limit, the solubility of the vinyl chloride resin composition can be improved.

[0079] In addition, in the present invention, the "average degree of polymerization" can be measured in accordance with JIS K6720-2.

[0080] [Average particle size]

[0081] In addition, the average particle size of the vinyl chloride resin particles is usually 30 μm or more, preferably 50 μm or more, more preferably 100 μm or more, preferably 500 μm or less, more preferably 200 μm or less. If the average particle size of the vinyl chloride resin particles is above the above lower limit, the powder fluidity of the vinyl chloride resin composition can be improved. On the other hand, if the average particle size of the vinyl chloride resin particles is below the above upper limit, the meltability of the vinyl chloride resin composition can be improved while improving the surface smoothness of the formed vinyl chloride resin molded body.

[0082] In the present invention, the "average particle size" can be measured as a volume average particle size by a laser diffraction method in accordance with JIS Z8825.

[0083] [Content ratio]

[0084] Moreover, the content of the vinyl chloride resin particles in the (a) vinyl chloride resin is preferably 80% by mass or more, more preferably 90% by mass or more, can be 100% by mass, and is preferably 99% by mass or less. If the content of the vinyl chloride resin particles in the (a) vinyl chloride resin is above the above lower limit, the physical strength of the formed vinyl chloride resin molded body can be sufficiently ensured while the tensile elongation of the vinyl chloride resin molded body can be improved. On the other hand, if the content of the vinyl chloride resin particles in the (a) vinyl chloride resin is below the above upper limit, the powder fluidity of the vinyl chloride resin composition can be improved.

[0085] <<Vinyl chloride resin particles>>

[0086] In a vinyl chloride resin composition, vinyl chloride resin fine particles generally function as a release agent (powder flowability improver). In addition, the vinyl chloride resin fine particles are preferably produced by an emulsion polymerization method.

[0087] [Average degree of polymerization]

[0088] Furthermore, the average degree of polymerization of the vinyl chloride resin constituting the vinyl chloride resin microparticles is preferably 500 or more, more preferably 700 or more, and preferably 2600 or less, more preferably 2400 or less. If the average degree of polymerization of the vinyl chloride resin constituting the vinyl chloride resin microparticles as the release agent is above the above lower limit, the powder flowability of the vinyl chloride resin composition can be improved, and the tensile elongation of the formed vinyl chloride resin molded body can be improved. On the other hand, if the average degree of polymerization of the vinyl chloride resin constituting the vinyl chloride resin microparticles is below the above upper limit, the solubility of the vinyl chloride resin composition can be improved, and the surface smoothness of the formed vinyl chloride resin molded body can be improved.

[0089] [Average particle size]

[0090] In addition, the average particle size of the vinyl chloride resin microparticles is usually less than 30 μm, preferably less than 10 μm, more preferably less than 5 μm, preferably more than 0.1 μm, more preferably more than 1 μm. If the average particle size of the vinyl chloride resin microparticles is above the above lower limit, the powder fluidity of the vinyl chloride resin composition can be improved, for example, without excessively reducing the size of the release agent. On the other hand, if the average particle size of the vinyl chloride resin microparticles is below the above upper limit, the solubility of the vinyl chloride resin composition can be improved, and the surface smoothness of the formed vinyl chloride resin molded body can be improved.

[0091] [Content ratio]

[0092] Furthermore, the content of the vinyl chloride resin microparticles in the (a) vinyl chloride resin may be 0% by mass, preferably 1% by mass or more, preferably 20% by mass or less, and more preferably 10% by mass or less. If the content of the vinyl chloride resin microparticles in the (a) vinyl chloride resin is above the above lower limit, the powder fluidity of the vinyl chloride resin composition can be improved. On the other hand, if the content of the vinyl chloride resin microparticles in the (a) vinyl chloride resin is below the above upper limit, the physical strength of the formed vinyl chloride resin molded body can be improved.

[0093] <(b) Plasticizer>

[0094] The (b) plasticizer is not particularly limited, but preferably contains at least one of (b1) trimellitic acid ester and (b2) polyester. If at least one of (b1) trimellitic acid ester and (b2) polyester is used as the (b) plasticizer for the vinyl chloride resin composition of the present invention, a vinyl chloride resin molded body having excellent tensile properties (tensile elongation and tensile stress) can be formed. In addition, if (b2) polyester is used as the (b) plasticizer, when a laminated body is prepared in which a foamed polyurethane molded body is added to the formed vinyl chloride resin molded body, the thermal shrinkage of the vinyl chloride resin molded body caused by the transfer of the plasticizer contained in the vinyl chloride resin molded body to the foamed polyurethane molded body at high temperature can be suppressed. That is, if (b2) polyester is used as the (b) plasticizer, the heat shrinkage resistance of the formed vinyl chloride resin molded body can be improved.

[0095] The (b) plasticizer may contain both the (b1) trimellitate and the (b2) polyester, or may contain one of the (b1) trimellitate and the (b2) polyester but not the other.

[0096] The (b) plasticizer may contain a plasticizer other than the (b1) trimellitic acid ester and the (b2) polyester (hereinafter, sometimes simply referred to as "(b3) other plasticizer").

[0097] The content of the (b) plasticizer in the vinyl chloride resin composition (i.e., the total content of the (b1) trimellitic acid ester, the (b2) polyester, and the (b3) other plasticizers) needs to be 75 parts by mass or more, preferably 80 parts by mass or more, more preferably 85 parts by mass or more, further preferably 90 parts by mass or more, further preferably 100 parts by mass or more, and further further preferably 110 parts by mass or more, and preferably 200 parts by mass or less, more preferably 180 parts by mass or less, further preferably 160 parts by mass or less, further preferably 140 parts by mass or less, and further further preferably 125 parts by mass or less. When the content of the (b) plasticizer in the vinyl chloride resin composition is at least the above lower limit, the vinyl chloride resin composition can be well molded (particularly powder molded) and sufficient flexibility can be imparted to the formed vinyl chloride resin molded body. On the other hand, when the content of the plasticizer (b) in the vinyl chloride resin composition is below the above upper limit, the gloss change of the formed vinyl chloride resin molded article can be further suppressed, and the color tone change and surface stickiness of the vinyl chloride resin molded article can be suppressed.

[0098] The content of the (b) plasticizer in the vinyl chloride resin composition can be appropriately adjusted within a range in which the desired effect of the present invention is obtained, and can be, for example, 35% by mass or more and 65% by mass or less.

[0099] In the present invention, the "content ratio of the plasticizer" in the vinyl chloride resin composition can be measured by Soxhlet extraction using the vinyl chloride resin composition or a vinyl chloride resin molded article formed using the vinyl chloride resin composition as a measurement sample.

[0100] <<(b1) Trimellitate>>

[0101] The (b1) trimellitic acid ester contained in the (b) plasticizer is preferably an ester compound of trimellitic acid and a monohydric alcohol.

[0102] Specific examples of the monohydric alcohol include, but are not limited to, aliphatic alcohols such as 1-hexanol, 1-heptanol, 1-octanol, 2-ethylhexanol, 1-nonanol, 1-decanol, 1-undecanol, and 1-dodecanol. As the monohydric alcohol, aliphatic alcohols having 6 to 18 carbon atoms are particularly preferred, and straight-chain aliphatic alcohols having 6 to 18 carbon atoms are more preferred.

[0103] As the trimellitic acid ester (b1), a triester in which substantially all the carboxyl groups of trimellitic acid are esterified with the monohydric alcohol is particularly preferred. The alcohol residues in the triester may be derived from the same alcohol or from different alcohols.

[0104] The trimellitic acid ester (b1) may be composed of a single compound or a mixture of different compounds.

[0105] Specific examples of preferred (b1) trimellitic acid esters are tri-n-hexyl trimellitate, tri-n-heptyl trimellitate, tri-n-octyl trimellitate, tri(2-ethylhexyl) trimellitate, tri-n-nonyl trimellitate, tri-n-decyl trimellitate, tri-isodecyl trimellitate, tri-n-undecyl trimellitate, tri-n-dodecyl trimellitate, tri-n-alkyl trimellitate (esters having two or more alkyl groups with different carbon numbers [wherein the carbon numbers are 6 to 18] in the molecule), tri-n-alkyl trimellitate (esters having two or more alkyl groups with different carbon numbers [wherein the carbon numbers are 6 to 18] in the molecule), and mixtures thereof.

[0106] Specific examples of more preferred (b1) trimellitic acid esters are tri-n-octyl trimellitate, tri-(2-ethylhexyl) trimellitate, tri-n-nonyl trimellitate, tri-n-decyl trimellitate, tri-n-alkyl trimellitate (esters having two or more alkyl groups with different carbon numbers [wherein the carbon number is 6 to 18]) in the molecule, and mixtures thereof.

[0107] The content of the trimellitic acid ester (b1) in the (b) plasticizer is preferably 90% by mass or more, more preferably 92% by mass or more, and further preferably 93% by mass or more, and can be 100% by mass or less, preferably 99% by mass or less, and more preferably 98% by mass or less. If the content of the trimellitic acid ester (b1) in the (b) plasticizer is within the above-specified range, the powder flowability of the vinyl chloride resin composition can be improved, and the tensile elongation of the formed vinyl chloride resin molded article can be improved.

[0108] The content of the trimellitic acid ester (b1) in the vinyl chloride resin composition is preferably 70 parts by mass or more, more preferably 75 parts by mass or more, further preferably 80 parts by mass or more, further preferably 85 parts by mass or more, further preferably 95 parts by mass or more, further preferably 105 parts by mass or more, and preferably 195 parts by mass or less, more preferably 175 parts by mass or less, further preferably 155 parts by mass or less, further preferably 135 parts by mass or less, further preferably 120 parts by mass or less. If the content of the trimellitic acid ester (b1) in the vinyl chloride resin composition is at least the above lower limit, the powder flowability of the vinyl chloride resin composition can be improved, and the tensile elongation of the formed vinyl chloride resin molded article can be improved. On the other hand, if the content of the trimellitic acid ester (b1) in the vinyl chloride resin composition is at most the above upper limit, the gloss change of the formed vinyl chloride resin molded article can be further suppressed, and the change in color tone and the stickiness of the surface of the vinyl chloride resin molded article can be suppressed.

[0109] <<(b2) Polyester>>

[0110] The (b2) polyester contained in the (b) plasticizer is not particularly limited, and polyesters such as polyesters containing structural units derived from adipic acid (adipic acid polyesters), polyesters containing structural units derived from sebacic acid (sebacic acid polyesters), and polyesters containing structural units derived from phthalic acid (phthalic acid polyesters) can be used. In addition, these polyesters can be used alone or in combination of two or more at any ratio.

[0111] From the viewpoint of further improving the heat shrinkage resistance of the vinyl chloride resin molded article, it is particularly preferred to use an adipic acid-based polyester (a polyester containing a structural unit derived from adipic acid) as the polyester (b2).

[0112] The viscosity of the (b2) polyester is preferably 500 mPa·s or more, more preferably 1000 mPa·s or more, preferably 8000 mPa·s or less, more preferably 5000 mPa·s or less, and further preferably 4000 mPa·s or less. The "viscosity" can be measured at a temperature of 23° C. according to JIS Z8803.

[0113] The content of the (b2) polyester in the (b) plasticizer is preferably 90% by mass or more, more preferably 92% by mass or more, and further preferably 93% by mass or more, and can be 100% by mass or less, preferably 99% by mass or less, and more preferably 98% by mass or less. If the content of the (b2) polyester in the (b) plasticizer is within the above-specified range, the powder flowability of the vinyl chloride resin composition can be improved, and the tensile elongation of the formed vinyl chloride resin molded article can be improved.

[0114] Furthermore, the content of the (b2) polyester in the vinyl chloride resin composition is preferably 70 parts by mass or more, more preferably 75 parts by mass or more, further preferably 80 parts by mass or more, further preferably 85 parts by mass or more, further preferably 95 parts by mass or more, further preferably 105 parts by mass or more, and preferably 195 parts by mass or less, more preferably 175 parts by mass or less, further preferably 155 parts by mass or less, further preferably 135 parts by mass or less, further preferably 120 parts by mass or less. If the content of the (b2) polyester in the vinyl chloride resin composition is at least the above lower limit, the powder flowability of the vinyl chloride resin composition can be improved, and the tensile elongation of the formed vinyl chloride resin molded article can be improved. On the other hand, if the content of the (b2) polyester in the vinyl chloride resin composition is at most the above upper limit, the gloss change of the formed vinyl chloride resin molded article can be further suppressed, and the color tone change and surface stickiness of the vinyl chloride resin molded article can be suppressed.

[0115] <<(b3) Other plasticizers>>

[0116] The (b) plasticizer contained in the vinyl chloride resin composition may arbitrarily contain a plasticizer other than the above-mentioned (b1) trimellitic acid ester and (b2) polyester (sometimes referred to as "(b3) other plasticizer").

[0117] Specific examples of the (b3) other plasticizer include primary plasticizers and secondary plasticizers other than the above-mentioned (b1) trimellitic acid ester and (b2) polyester among the plasticizers described in International Publication No. 2016 / 098344.

[0118] Specifically, the so-called primary plasticizer includes:

[0119] Pyromellitic acid ester plasticizers such as tetra-n-hexyl pyromellitic acid, tetra-n-heptyl pyromellitic acid, tetra-n-octyl pyromellitic acid, tetra-(2-ethylhexyl) pyromellitic acid, tetra-n-nonyl pyromellitic acid, tetra-n-decyl pyromellitic acid, tetra-isodecyl pyromellitic acid, tetra-n-undecyl pyromellitic acid, tetra-dodecyl pyromellitic acid, and tetra-n-alkyl pyromellitic acid (esters having two or more alkyl groups with different carbon numbers [wherein the carbon number is 6 to 12] in the molecule);

[0120] Phthalic acid derivatives such as 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, butyl benzyl phthalate, dinonyl phthalate, and dicyclohexyl phthalate;

[0121] Isophthalic acid derivatives such as dimethyl isophthalate, di-(2-ethylhexyl) isophthalate and diisooctyl isophthalate;

[0122] Tetrahydrophthalic acid derivatives such as di-(2-ethylhexyl) tetrahydrophthalate, di-n-octyl tetrahydrophthalate, and di-isodecyl tetrahydrophthalate;

[0123] Adipic acid derivatives such as di-n-butyl adipate, di(2-ethylhexyl) adipate, diisodecyl adipate, and diisononyl adipate;

[0124] Azelaic acid derivatives such as di-(2-ethylhexyl) azelate, di-isooctyl azelate, and di-n-hexyl azelate;

[0125] Sebacic acid derivatives such as di-n-butyl sebacate, di-(2-ethylhexyl) sebacate, diisodecyl sebacate, and di-(2-butyloctyl) sebacate;

[0126] Maleic acid derivatives such as di-n-butyl maleate, dimethyl maleate, diethyl maleate, di-(2-ethylhexyl) maleate;

[0127] Fumaric acid derivatives such as di-n-butyl fumarate and di-(2-ethylhexyl) fumarate;

[0128] Citric acid derivatives such as triethyl citrate, tri-n-butyl citrate, acetyl triethyl citrate, acetyl tri-(2-ethylhexyl) citrate;

[0129] Itaconic acid derivatives such as monomethyl itaconate, monobutyl itaconate, dimethyl itaconate, diethyl itaconate, dibutyl itaconate, di-(2-ethylhexyl) itaconate;

[0130] Oleic acid derivatives such as butyl oleate, glyceryl monooleate, and diethylene glycol monooleate;

[0131] Ricinoleic acid derivatives such as acetylated ricinoleic acid methyl ester, acetylated ricinoleic acid butyl ester, monoricinoleic acid glyceryl ester, and monoricinoleic acid diethylene glycol ester;

[0132] Stearic acid derivatives such as n-butyl stearate and diethylene glycol distearate;

[0133] Other fatty acid derivatives such as diethylene glycol monolaurate, diethylene glycol dipelargonate, and pentaerythritol fatty acid esters;

[0134] Phosphoric acid derivatives such as triethyl phosphate, tributyl phosphate, tri-(2-ethylhexyl) phosphate, tributoxyethyl phosphate, triphenyl phosphate, cresyl diphenyl phosphate, tricresyl phosphate, tri(xylene) phosphate, and tri(chloroethyl) phosphate;

[0135] Diol derivatives such as diethylene glycol dibenzoate, dipropylene glycol dibenzoate, triethylene glycol dibenzoate, triethylene glycol di-(2-ethylbutyrate), triethylene glycol di-(2-ethylhexanoate), and dibutyl methylene dithioglycolate;

[0136] Glycerol derivatives such as monoacetin, triacetin, tributyrin, etc.;

[0137] Epoxy derivatives such as epoxyhexahydrophthalate, epoxy triglyceride, epoxidized octyl oleate, epoxidized decyl oleate, etc.

[0138] Examples of 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 dioctanoate; butyl epoxystearate, phenyl oleate, and methyl dihydroabietate.

[0139] Among them, from the viewpoint of further improving the tensile properties (tensile elongation and tensile stress) of the formed vinyl chloride resin molded article, it is preferred to use epoxidized vegetable oil, and more preferred to use epoxidized soybean oil.

[0140] The content ratio of the above-mentioned (b3) other plasticizers in the (b) plasticizer is not particularly limited, and can be, for example, 0 mass % or more, 1 mass % or more, 3 mass % or more, or 10 mass % or less, 8 mass % or less, or 7 mass % or less.

[0141] The content of (b3) other plasticizer in the vinyl chloride resin composition is not particularly limited, but can be 0 parts by mass or more and 15 parts by mass or less relative to 100 parts by mass of the above-mentioned (a) vinyl chloride resin.

[0142] Moreover, when an epoxidized vegetable oil such as epoxidized soybean oil is used as (b3) other plasticizer, from the viewpoint of further improving the tensile properties (tensile elongation and tensile stress) of the formed vinyl chloride resin molded body, the content of the epoxidized vegetable oil as (b3) other plasticizer is preferably 2 parts by mass or more, more preferably 3 parts by mass or more, further preferably 4 parts by mass or more, and preferably 10 parts by mass or less, more preferably 7 parts by mass or less, relative to 100 parts by mass of the above-mentioned (a) vinyl chloride resin.

[0143] <(c) Hindered Amine Light Stabilizer>

[0144] (c) The hindered amine light stabilizer is a component that can suppress the change in gloss of a vinyl chloride resin molded product formed using the vinyl chloride resin composition.

[0145] <<Molecular Weight>>

[0146] Here, the molecular weight of the (c) hindered amine light stabilizer needs to be 550 or more, preferably 575 or more, more preferably 600 or more, further preferably 625 or more, further preferably 650 or more, and further preferably 675 or more, and needs to be 1500 or less, preferably 1200 or less, more preferably 1000 or less, further preferably 900 or less, further preferably 800 or less, and further preferably 700 or less.

[0147] If the molecular weight of the hindered amine light stabilizer (c) is above the above lower limit, the gloss change of the formed vinyl chloride resin molded body can be sufficiently suppressed. In addition, if the molecular weight of the hindered amine light stabilizer (c) is above the above lower limit, the stickiness of the surface of the formed vinyl chloride resin molded body can be suppressed while improving the tensile elongation (particularly the tensile elongation at low temperatures) of the formed vinyl chloride resin molded body. On the other hand, if the molecular weight of the hindered amine light stabilizer (c) is below the above upper limit, the gloss change of the formed vinyl chloride resin molded body can be sufficiently suppressed. In addition, if the molecular weight of the hindered amine light stabilizer (c) is below the above upper limit, it is possible to ensure that the tensile elongation (particularly the tensile elongation at low temperatures) of the formed vinyl chloride resin molded body is sufficiently high.

[0148] In addition, the vinyl chloride resin composition of the present invention may further contain a hindered amine light stabilizer having a molecular weight outside the above-defined range (for example, a molecular weight of less than 550 or greater than 1500) in addition to the (c) hindered amine light stabilizer having a molecular weight within the above-defined range. However, from the viewpoint of further suppressing the gloss change of the formed vinyl chloride resin molded article, the vinyl chloride resin composition of the present invention preferably does not contain a hindered amine light stabilizer having a molecular weight outside the above-defined range.

[0149] <<Structure>>

[0150] (c) The hindered amine light stabilizer preferably has a monovalent organic group represented by the following formula (I):

[0151] [Chemical formula 4]

[0152]

[0153] [In formula (I), R 1 is a hydrogen atom or an alkyl group, and "*" represents a bonding bond].

[0154] When the (c) hindered amine-based light stabilizer has a monovalent organic group represented by (I) above, changes in gloss of the formed vinyl chloride resin molded article can be further suppressed.

[0155] Here, from the viewpoint of further suppressing the gloss change of the formed vinyl chloride resin molded article, R in the above formula (I) 1 It is preferably an alkyl group, more preferably an alkyl group having 1 to 10 carbon atoms, further preferably an alkyl group having 1 to 5 carbon atoms, further preferably an alkyl group having 1 to 3 carbon atoms, and particularly preferably a methyl group. That is, the (c) hindered amine light stabilizer is particularly preferably an N-methyl hindered amine light stabilizer.

[0156] In addition, from the viewpoint of further suppressing the gloss change of the formed vinyl chloride resin molded product, the number of the monovalent organic groups represented by the above formula (I) per molecule (c) of the hindered amine light stabilizer is preferably 1 or more, more preferably 2 or more, preferably 4 or less, more preferably 3 or less, and particularly preferably 2.

[0157] Furthermore, the (c) hindered amine light stabilizer preferably has a monovalent organic group represented by the following formula (II):

[0158] [Chemical formula 5]

[0159]

[0160] [In formula (II), R 2 and R 3 Each independently represents a hydrogen atom or an alkyl group, and "*" represents a bonding bond].

[0161] When the (c) hindered amine-based light stabilizer has a monovalent organic group represented by (II) above, changes in gloss of the formed vinyl chloride resin molded article can be further suppressed.

[0162] Here, from the viewpoint of further suppressing the gloss change of the formed vinyl chloride resin molded product, in the above formula (II), R 2 and R 3 At least one of them is an alkyl group, and more preferably R 2 and R 3 All are alkyl.

[0163] Can constitute the above formula (II) R 2 and R 3 The number of carbon atoms in the alkyl group is preferably 1 or more, more preferably 2 or more, further preferably 3 or more, further preferably 4 or more, preferably 10 or less, more preferably 8 or less, further preferably 6 or less, further preferably 5 or less, and particularly preferably 4. 2 and R 3 When the number of carbon atoms of the alkyl group is within the above-specified range, the gloss change of the formed vinyl chloride resin molded product can be further suppressed.

[0164] Furthermore, from the viewpoint of further suppressing the gloss change of the formed vinyl chloride resin molded product, it is particularly preferred that R in the above formula (II) 2 and R 3 All are tert-butyl (also called "1,1-dimethylethyl").

[0165] In addition, from the viewpoint of further suppressing the gloss change of the formed vinyl chloride resin molded product, the number of the monovalent organic group represented by the above formula (II) is preferably 1 or more, preferably 3 or less, more preferably 2 or less, and particularly preferably 1 per molecule of the hindered amine-based light stabilizer (c).

[0166] Then, it is particularly preferable to use a compound represented by the following formula (III) as the (c) hindered amine-based light stabilizer.

[0167] [Chemical formula 6]

[0168]

[0169] Specifically, bis(1,2,2,6,6-pentamethyl-4-piperidinyl)butyl(3,5-di-tert-butyl-4-hydroxybenzyl)malonate (also referred to as "bis(1,2,2,6,6-pentamethyl-4-piperidinyl)2-[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl]-2-butylmalonate) is particularly preferably used.

[0170] As the (c) hindered amine light stabilizer, a commercially available item can be used, for example, "Tinuvin 144" manufactured by BASF Japan Ltd. (compound name: bis(1,2,2,6,6-pentamethyl-4-piperidinyl)butyl(3,5-di-tert-butyl-4-hydroxybenzyl)malonate) can be used.

[0171] The (c) hindered amine light stabilizer is not particularly limited as long as it has a molecular weight within the above-specified range, and may be used alone or in combination of two or more at any ratio.

[0172] <<Content>>

[0173] The content of the (c) hindered amine light stabilizer in the vinyl chloride resin composition is not particularly limited, but is preferably 0.01 parts by mass or more, more preferably 0.05 parts by mass or more, further preferably 0.1 parts by mass or more, further preferably 0.15 parts by mass or more, still further preferably 0.2 parts by mass or more, particularly preferably 0.25 parts by mass or more, and is preferably 20 parts by mass or less, more preferably 5 parts by mass or less, further preferably 3 parts by mass or less, further preferably 1.5 parts by mass or less, further further preferably 1 part by mass or less, still further preferably 0.8 parts by mass or less, and particularly preferably 0.5 parts by mass or less, based on 100 parts by mass of the above-mentioned (a) vinyl chloride resin.

[0174] If the content of the (c) hindered amine light stabilizer in the vinyl chloride resin composition is above the above lower limit, the gloss change of the formed vinyl chloride resin molded body can be further suppressed. In addition, if the content of the (c) hindered amine light stabilizer in the vinyl chloride resin composition is above the above lower limit, the hue change of the formed vinyl chloride resin molded body can be suppressed, and the tensile elongation (particularly the tensile elongation at low temperature) of the vinyl chloride resin molded body can be improved. On the other hand, if the content of the (c) hindered amine light stabilizer in the vinyl chloride resin composition is below the above upper limit, the gloss change of the formed vinyl chloride resin molded body can be further suppressed. In addition, if the content of the (c) hindered amine light stabilizer in the vinyl chloride resin composition is below the above upper limit, the stickiness of the surface of the formed vinyl chloride resin molded body can be suppressed, and the tensile elongation (particularly the tensile elongation at low temperature) of the vinyl chloride resin molded body can be ensured to be sufficiently high.

[0175] The content of the (c) hindered amine light stabilizer in the vinyl chloride resin composition is not particularly limited, but is preferably 0.01 parts by mass or more, more preferably 0.05 parts by mass or more, further preferably 0.1 parts by mass or more, further preferably 0.15 parts by mass or more, still further preferably 0.2 parts by mass or more, particularly preferably 0.22 parts by mass or more, and is preferably 20 parts by mass or less, more preferably 5 parts by mass or less, further preferably 3 parts by mass or less, further preferably 1.5 parts by mass or less, further further preferably 1 part by mass or less, still further preferably 0.8 parts by mass or less, and particularly preferably 0.45 parts by mass or less.

[0176] If the content of the (c) hindered amine light stabilizer in the vinyl chloride resin composition is above the above lower limit, the gloss change of the formed vinyl chloride resin molded body can be further suppressed. In addition, if the content of the (c) hindered amine light stabilizer in the vinyl chloride resin composition is above the above lower limit, the hue change of the formed vinyl chloride resin molded body can be suppressed, and the tensile elongation (particularly the tensile elongation at low temperature) of the vinyl chloride resin molded body can be improved. On the other hand, if the content of the (c) hindered amine light stabilizer in the vinyl chloride resin composition is below the above upper limit, the gloss change of the formed vinyl chloride resin molded body can be further suppressed. In addition, if the content of the (c) hindered amine light stabilizer in the vinyl chloride resin composition is below the above upper limit, the stickiness of the surface of the formed vinyl chloride resin molded body can be suppressed, and the tensile elongation (particularly the tensile elongation at low temperature) of the vinyl chloride resin molded body can be ensured to be sufficiently high.

[0177] <(d) Cross-linked vinyl chloride resin>

[0178] The vinyl chloride resin composition of the present invention preferably further comprises (d) a cross-linked vinyl chloride resin in addition to the above-mentioned (a) vinyl chloride resin, (b) a plasticizer and (c) a hindered amine-based light stabilizer. In the vinyl chloride resin composition, the (d) cross-linked vinyl chloride resin acts as a release agent (powder fluidity improver). Moreover, if the vinyl chloride resin composition further comprises (d) a cross-linked vinyl chloride resin, the powder fluidity of the vinyl chloride resin composition can be improved. In addition, if the vinyl chloride resin composition further comprises (d) a cross-linked vinyl chloride resin, the stickiness of the surface of the formed vinyl chloride resin molded body can be further suppressed.

[0179] Furthermore, in the vinyl chloride resin composition of the present invention, by using the above-mentioned (c) hindered amine-based light stabilizer and (d) crosslinked vinyl chloride resin in combination, the gloss change of the formed vinyl chloride resin molded article can be further suppressed.

[0180] (d) Cross-linked vinyl chloride resin is a resin obtained by cross-linking vinyl chloride resin. Moreover, (d) cross-linked vinyl chloride resin can be prepared by cross-linking uncross-linked vinyl chloride resin. As uncross-linked vinyl chloride resin that can be used as a material for preparing (d) cross-linked vinyl chloride resin, for example, homopolymers and vinyl chloride copolymers composed of vinyl chloride monomer units mentioned above as specific examples of (a) vinyl chloride resin can be cited. Moreover, the cross-linking method of vinyl chloride resin is not particularly limited, and it can be, for example, a method of chemical cross-linking using a known cross-linking agent, or a method of cross-linking by irradiation with radiation such as electron beams.

[0181] As the (d) cross-linked vinyl chloride resin, a granular cross-linked vinyl chloride resin is generally used. Moreover, from the viewpoint of further improving the powder fluidity of the vinyl chloride resin composition, the (d) cross-linked vinyl chloride resin preferably contains cross-linked vinyl chloride resin microparticles, and more preferably consists only of cross-linked vinyl chloride resin microparticles. In addition, the (d) cross-linked vinyl chloride resin may contain one or more cross-linked vinyl chloride resin microparticles.

[0182] Here, the average particle size of the cross-linked vinyl chloride resin microparticles is usually less than 30 μm, preferably less than 10 μm, more preferably less than 5 μm, preferably more than 0.1 μm, more preferably more than 1 μm. If the average particle size of the cross-linked vinyl chloride resin microparticles is above the above lower limit, the powder fluidity (especially high-temperature powder fluidity) of the vinyl chloride resin composition can be further improved without excessively reducing the size as a release agent. In addition, if the average particle size of the cross-linked vinyl chloride resin microparticles is below the above upper limit, the solubility of the vinyl chloride resin composition can be improved, and the surface smoothness of the formed vinyl chloride resin molded body can be improved.

[0183] The content of the cross-linked vinyl chloride resin (d) in the vinyl chloride resin composition is preferably 0.1 parts by mass or more, more preferably 1 part by mass or more, further preferably 4 parts by mass or more, further preferably 6 parts by mass or more, and further preferably 7 parts by mass or more, and preferably 30 parts by mass or less, more preferably 25 parts by mass or less, further preferably 20 parts by mass or less, further preferably 15 parts by mass or less, and further preferably 10 parts by mass or less, relative to 100 parts by mass of the above-mentioned vinyl chloride resin (a). If the content of the cross-linked vinyl chloride resin (d) in the vinyl chloride resin composition is at least the above lower limit, the gloss change of the formed vinyl chloride resin molded body can be further suppressed. In addition, if the content of the cross-linked vinyl chloride resin (d) in the vinyl chloride resin composition is at least the above lower limit, the powder flowability of the vinyl chloride resin composition can be further improved, and the stickiness of the surface of the formed vinyl chloride resin molded body can be further suppressed. On the other hand, if the content of the cross-linked vinyl chloride resin (d) in the vinyl chloride resin composition is at most the above upper limit, the tensile elongation of the formed vinyl chloride resin molded body can be ensured to be sufficiently high.

[0184] The mass ratio of the cross-linked vinyl chloride resin (d) to the vinyl chloride resin microparticles in the vinyl chloride resin composition (cross-linked vinyl chloride resin / vinyl chloride resin microparticles) is preferably 1 / 2 or more, more preferably 2 / 3 or more, further preferably 1 / 1 or more, preferably 20 / 1 or less, more preferably 15 / 1 or less, further preferably 10 / 1 or less. If the mass ratio of the cross-linked vinyl chloride resin (d) to the vinyl chloride resin microparticles in the vinyl chloride resin composition (cross-linked vinyl chloride resin / vinyl chloride resin microparticles) is above the above lower limit, the powder fluidity of the vinyl chloride resin composition can be further improved while further suppressing the stickiness of the surface of the formed vinyl chloride resin molded body. On the other hand, if the mass ratio of the cross-linked vinyl chloride resin (d) to the vinyl chloride resin microparticles in the vinyl chloride resin composition (cross-linked vinyl chloride resin / vinyl chloride resin microparticles) is below the above upper limit, it is possible to ensure that the tensile elongation of the formed vinyl chloride resin molded body is sufficiently high.

[0185] The content of the cross-linked vinyl chloride resin (d) in the vinyl chloride resin composition is preferably 0.1 parts by mass or more, more preferably 1 part by mass or more, further preferably 4 parts by mass or more, further preferably 5 parts by mass or more, and further preferably 6 parts by mass or more, and preferably 30 parts by mass or less, more preferably 25 parts by mass or less, further preferably 18 parts by mass or less, further preferably 13 parts by mass or less, and further preferably 10 parts by mass or less, relative to 100 parts by mass of the above-mentioned plasticizer (b). If the content of the cross-linked vinyl chloride resin (d) in the vinyl chloride resin composition is at least the above lower limit, the gloss change of the formed vinyl chloride resin molded body can be further suppressed. In addition, if the content of the cross-linked vinyl chloride resin (d) in the vinyl chloride resin composition is at least the above lower limit, the powder flowability of the vinyl chloride resin composition can be further improved, and the stickiness of the surface of the formed vinyl chloride resin molded body can be further suppressed. On the other hand, if the content of the cross-linked vinyl chloride resin (d) in the vinyl chloride resin composition is at most the above upper limit, the tensile elongation of the formed vinyl chloride resin molded body can be ensured to be sufficiently high.

[0186] <Additives>

[0187] The vinyl chloride resin composition of the present invention may further contain various additives in addition to the above-mentioned components. The additives are not particularly limited, and examples thereof include: lubricants; stabilizers such as perchloric acid-treated hydrotalcite, zeolite, β-diketone, fatty acid metal salts, etc.; release agents; other release agents other than the above-mentioned vinyl chloride resin particles; impact modifiers; perchloric acid compounds (sodium perchlorate, potassium perchlorate, etc.) other than perchloric acid-treated hydrotalcite; antioxidants; mildew inhibitors; flame retardants; antistatic agents; fillers; light stabilizers; foaming agents; pigments, etc.

[0188] Furthermore, as the additives that can be contained in the vinyl chloride resin composition of the present invention, for example, additives described in International Publication No. 2016 / 098344 can be used, and the preferred content thereof can also be the same as that described in International Publication No. 2016 / 098344.

[0189] <<Amide Compound>>

[0190] The vinyl chloride resin composition for powder molding of the present invention may contain an amide compound as an additive other than the above. When the vinyl chloride resin composition further contains an amide compound, the mold releasability of the formed vinyl chloride resin molded body can be improved.

[0191] The amide compound is a compound having an amide group, and is represented by, for example, the following formula (1).

[0192]

[0193] [In formula (1), n ​​is an integer of 2 to 6, R 4 is an n-valent hydrocarbon group, R 5 is a monovalent hydrocarbon group or hydrogen, R 6 is a monovalent hydrocarbon group, n R 5 They can be the same or different. 6 may be the same or different from each other]. That is, the above-mentioned amide compound has, for example, n hydrogen atoms of a hydrocarbon replaced by -NR 5 COR 6 The structure represented by the amide group substitution.

[0194] Here, n in the above formula (1) is, for example, an integer of 2 to 6, and n may be an integer of 2 to 3, or 2.

[0195] In addition, R in the above formula (1) 4 It is an n-valent hydrocarbon group, and may be an n-valent aliphatic hydrocarbon group or an n-valent aromatic hydrocarbon group.

[0196] In addition, R 4 The number of carbon atoms may be, for example, 1 or more, or 2 or more, or 8 or less, or 6 or less.

[0197] As R 4 , for example, a methylene group, a methylmethylene group, an ethylene (dimethylene group), a dimethylmethylene group, an isopropylene group, a trimethylene group, an isobutylene group, a tetramethylene group, a hexamethylene group, etc. can be mentioned.

[0198] In addition, R in the above formula (1) 5 is a monovalent hydrocarbon group or hydrogen, n R 5 They may be the same or different from each other. 5 The monovalent hydrocarbon group may be a monovalent aliphatic hydrocarbon group or a monovalent aromatic hydrocarbon group. The monovalent aliphatic hydrocarbon group is, for example, a monovalent chain aliphatic hydrocarbon group. In addition, the monovalent aliphatic hydrocarbon group may be a saturated aliphatic hydrocarbon group or an unsaturated aliphatic hydrocarbon group.

[0199] In addition, R 5 The hydrocarbon group has, for example, 1 or more and 2 or less carbon atoms.

[0200] As R 5 , for example, hydrogen, methyl and ethyl can be mentioned.

[0201] As R 5 , you can have n R 5 At least one of them is hydrogen, and n R 5 All of the hydrogen is hydrogen.

[0202] In addition, R in the above formula (1) 6is a monovalent hydrocarbon group, n R 6 They may be the same or different. That is, in the amide compound (e), R 6 The saturated hydrocarbon group and R 6 The unsaturated hydrocarbon group may only have R 6 The unsaturated hydrocarbon group may only have R 6 of saturated hydrocarbon groups.

[0203] Here, R 6 The saturated hydrocarbon group is, for example, a monovalent chain saturated aliphatic hydrocarbon group.

[0204] In addition, R 6 The number of carbon atoms in the saturated hydrocarbon group may be 11 or more, 13 or more, or 15 or more, or 23 or less, 21 or less, or 19 or less, or 17 or less.

[0205] As R 3 Saturated hydrocarbon groups include CH3(CH2) 10 -、CH3(CH2) 12 -、CH3(CH2) 14 -、CH3(CH2) 16 -、CH3(CH2) 18 -、CH3(CH2) 20 -、CH3(CH2) 22 -wait.

[0206] Here, R 6 The unsaturated hydrocarbon group is, for example, a monovalent chain unsaturated aliphatic hydrocarbon group.

[0207] In addition, R 6 The number of carbon atoms of the unsaturated hydrocarbon group may be 11 or more, 13 or more, or 15 or more, or 23 or less, 21 or less, or 19 or less, or 17.

[0208] As R 6 The unsaturated hydrocarbon group includes, for example, CH3(CH2)7CH=CH(CH2)7-, CH3(CH2)7CH=CH(CH2) 11 - etc. monounsaturated hydrocarbon groups; CH3(CH2)4(CH=CHCH2)2(CH2)6- etc. diunsaturated hydrocarbon groups; CH3CH2(CH=CHCH2)3(CH2)6- etc. triunsaturated hydrocarbon groups; tetraunsaturated hydrocarbon groups; pentaunsaturated hydrocarbon groups; hexaunsaturated hydrocarbon groups and the like unsaturated hydrocarbon groups having a carbon-carbon double bond, and unsaturated hydrocarbon groups having a carbon-carbon triple bond, etc.

[0209] Specific examples of the amide compound include ethylenebisoleamide (particularly dimethylenebisoleamide), ethylenebiserucamide, hexamethylenebisoleamide, ethylenebislauramide, ethylenebisstearamide (particularly dimethylenebisstearamide), ethylenebispalmitamide, and hexamethylenebisstearamide.

[0210] The content of the amide compound in the vinyl chloride resin composition may be 0 part by mass, 0.1 part by mass or more, or 0.25 part by mass or more, or 1.5 parts by mass or less, 1.25 parts by mass or less, or 1 part by mass or less, relative to 100 parts by mass of the above-mentioned (a) vinyl chloride resin.

[0211] The content of the amide compound in the vinyl chloride resin composition may be 0 parts by mass, 0.1 parts by mass or more, 0.25 parts by mass or more, 1.5 parts by mass or less, 1.25 parts by mass or less, or 1 part by mass or less, relative to 100 parts by mass of the above-mentioned (b) plasticizer.

[0212] Furthermore, of course, the vinyl chloride resin composition of the present invention may not contain an amide compound.

[0213] <Ratio of Tetrahydrofuran-Insoluble Components in Vinyl Chloride Resin Composition>

[0214] The proportion of the tetrahydrofuran-insoluble component in the vinyl chloride resin composition is preferably 8.5% by mass or more, more preferably 9% by mass or more, further preferably 9.5% by mass or more, further preferably 9.7% by mass or more, and is preferably 20% by mass or less, more preferably 18% by mass or less, further preferably 16% by mass or less, further preferably 15% by mass or less.

[0215] If the ratio of the tetrahydrofuran insoluble components in the vinyl chloride resin composition is not less than the above lower limit, the powder fluidity of the vinyl chloride resin composition can be improved. In addition, if the ratio of the tetrahydrofuran insoluble components in the vinyl chloride resin composition is not less than the above lower limit, the stickiness of the surface of the formed vinyl chloride resin molded body can be suppressed. On the other hand, if the ratio of the tetrahydrofuran insoluble components in the vinyl chloride resin composition is not more than the above upper limit, the tensile elongation of the formed vinyl chloride resin molded body can be ensured to be sufficiently high.

[0216] In addition, the proportion of the tetrahydrofuran-insoluble component of the vinyl chloride resin composition can be adjusted by changing the amount of each component used when preparing the vinyl chloride resin composition (for example, (a) vinyl chloride resin, (b) plasticizer, (c) hindered amine light stabilizer and (d) cross-linked vinyl chloride resin, etc.).

[0217] In the present invention, the "ratio of tetrahydrofuran-insoluble components" of the vinyl chloride resin composition can be measured by the method described in Examples of the present specification using the vinyl chloride resin composition or a vinyl chloride resin molded article formed using the vinyl chloride resin composition as a measurement sample.

[0218] The ratio of the ratio of the tetrahydrofuran-insoluble component to the content ratio of the plasticizer in the vinyl chloride resin composition (ratio of the tetrahydrofuran-insoluble component / content ratio of the plasticizer) is preferably 0.17 or more, more preferably 0.175 or more, further preferably 0.185 or more, further preferably 0.19 or more, and further preferably 0.195 or more, and is preferably 0.50 or less, more preferably 0.45 or less, further preferably 0.40 or less, further preferably 0.35 or less, and further preferably 0.32 or less.

[0219] If the ratio of the ratio of the tetrahydrofuran insoluble components in the vinyl chloride resin composition to the content of the plasticizer (ratio of the tetrahydrofuran insoluble components / content of the plasticizer) is above the above lower limit, the powder fluidity of the vinyl chloride resin composition can be improved. In addition, if the ratio of the ratio of the tetrahydrofuran insoluble components in the vinyl chloride resin composition to the content of the plasticizer (ratio of the tetrahydrofuran insoluble components / content of the plasticizer) is above the above lower limit, the stickiness of the surface of the formed vinyl chloride resin molded body can be suppressed. On the other hand, if the ratio of the ratio of the tetrahydrofuran insoluble components in the vinyl chloride resin composition to the content of the plasticizer (ratio of the tetrahydrofuran insoluble components / content of the plasticizer) is below the above upper limit, the tensile elongation of the formed vinyl chloride resin molded body can be ensured to be sufficiently high.

[0220] <Method for preparing vinyl chloride resin composition>

[0221] The vinyl chloride resin composition of the present invention can be prepared by mixing the above components.

[0222] Here, the mixing method of the above-mentioned (a) vinyl chloride resin, (b) plasticizer, (c) hindered amine-based light stabilizer, and (d) cross-linked vinyl chloride resin and various additives which are further mixed as needed is not particularly limited, and for example, a method can be mentioned in which the components other than the release agent (including vinyl chloride resin particles and (d) cross-linked vinyl chloride resin of an optional component) are mixed by dry mixing, and then the release agent is added and mixed. Here, a Henschel mixer is preferably used for dry mixing. In addition, the temperature during dry mixing is not particularly limited, but is preferably 50° C. or more, more preferably 70° C. or more, and preferably 200° C. or less.

[0223] <Application of vinyl chloride resin composition>

[0224] Furthermore, the obtained vinyl chloride resin composition can be suitably used for powder molding, and further can be suitably used for powder slush molding.

[0225] (Vinyl chloride resin molded article)

[0226] The vinyl chloride resin molded body of the present invention is characterized in that it is obtained by molding the above-mentioned vinyl chloride resin composition by any method. Since the vinyl chloride resin molded body of the present invention is formed using the above-mentioned vinyl chloride resin composition, it usually contains at least (a) vinyl chloride resin, (b) plasticizer and (c) hindered amine light stabilizer, and optionally further contains (d) cross-linked vinyl chloride resin and various additives. In addition, since the vinyl chloride resin molded body of the present invention is formed using the above-mentioned vinyl chloride resin composition of the present invention, gloss changes are suppressed and the appearance stability is excellent.

[0227] Therefore, the laminated body formed by lining the polyurethane foamed molded body on the vinyl chloride resin molded body of the present invention can be suitably used as an automobile interior material such as the surface skin of automobile instrument panels.

[0228] <Method for Forming Vinyl Chloride Resin Molded Article>

[0229] Here, when a vinyl chloride resin molded body is formed by powder slush molding, the metal mold temperature during powder slush molding is not particularly limited, but is preferably set to above 200°C, more preferably above 220°C, preferably below 300°C, more preferably below 280°C.

[0230] Furthermore, when manufacturing a vinyl chloride resin molded body, there is no particular limitation, and for example, the following method can be used. That is, the vinyl chloride resin composition of the present invention is sprinkled in a metal mold in the above-mentioned temperature range, and after being left for a period of time of more than 5 seconds and less than 30 seconds, the remaining vinyl chloride resin composition is shaken off, and further left at an arbitrary temperature for a period of time of more than 30 seconds and less than 3 minutes. Then, the metal mold is cooled to a temperature of more than 10°C and less than 60°C, and the obtained vinyl chloride resin molded body of the present invention is demolded from the metal mold. Then, a sheet-like molded body having a shape similar to that of the metal mold is obtained.

[0231] (Laminated body)

[0232] The laminate of the present invention comprises a foamed polyurethane molded body and the above-mentioned vinyl chloride resin molded body. In addition, the vinyl chloride resin molded body usually constitutes one surface of the laminate.

[0233] Furthermore, the laminate of the present invention is suitable for use as an automobile interior material for forming automobile interior parts, particularly automobile instrument panels.

[0234] Here, the lamination method of the foamed polyurethane molded body and the vinyl chloride resin molded body is not particularly limited, and for example, the following methods can be used. That is, the following methods can be mentioned: (1) a method of preparing a foamed polyurethane molded body and a vinyl chloride resin molded body separately, and then bonding them together by using heat fusion, thermal bonding or a known adhesive or the like; (2) a method of directly forming a foamed polyurethane molded body on the vinyl chloride resin molded body by reacting isocyanates and polyols, etc., which are raw materials for the foamed polyurethane molded body, on the vinyl chloride resin molded body to polymerize, and foaming polyurethane by a known method. Among them, the latter method (2) is preferred from the viewpoint of simple process and the viewpoint that the vinyl chloride resin molded body and the foamed polyurethane molded body can be firmly bonded even when a laminated body of various shapes is obtained.

[0235] Example

[0236] Hereinafter, the present invention will be specifically described based on Examples, but the present invention is not limited to these Examples. In addition, in the following description, "%" and "part" indicating an amount are based on mass unless otherwise specified.

[0237] In addition, the "content ratio of the plasticizer" in the vinyl chloride resin composition generally corresponds to the ratio of the amount of the plasticizer used relative to the total amount of components used to prepare the vinyl chloride resin composition unless otherwise specified.

[0238] Then, the powder flowability and the ratio of tetrahydrofuran insoluble components of the vinyl chloride resin composition, and the tensile elongation, surface stickiness, color tone change, and gloss change of the vinyl chloride resin molded sheet were measured and evaluated by the following methods.

[0239] <Powder fluidity>

[0240] Using the vinyl chloride resin compositions obtained in the examples and comparative examples, the bulk density was measured based on the weight in a 100 mL container using a bulk density measuring apparatus described in JIS-K-6720. The powder of the vinyl chloride resin composition in the 100 mL container obtained at this time was returned to the bulk density measuring apparatus, and the time from immediately opening the baffle to the flow of all the powder was measured to obtain the falling seconds. In addition, the case where there is no complete flow even after waiting for 1 minute is recorded as "no flow". The above operations were all performed at room temperature (23°C). In addition, the smaller the falling seconds, the better the powder fluidity of the vinyl chloride resin composition at room temperature.

[0241] <Proportion of tetrahydrofuran-insoluble components>

[0242] Cut off about 0.3 g of the vinyl chloride resin molded body (vinyl chloride resin molded sheet) as the measurement sample, cut it into pieces and put it into a 100 mL glass bottle, accurately weigh it and find the mass of the sample. Add 90 ml of tetrahydrofuran (THF) to the weighed measurement sample, let it stand for 24 hours to dissolve the measurement sample. Take out a piece of glass fiber filter paper "GF-75φ110mm" made by Advantech, accurately weigh it, and find the mass of the filter paper before the test. Using this filter paper, filter the THF solution in which the measurement sample is dissolved under reduced pressure, and dry the filtered filter paper in an oven at 40°C for 3 hours. Accurately weigh the mass of the dried filter paper to find the mass of the filter paper after the test. Then, the proportion of the THF insoluble component of the vinyl chloride resin composition is calculated by the following formula.

[0243]

[0244] <Tensile elongation>

[0245] [Initial stage (unheated state)]

[0246] The vinyl chloride resin molded sheets obtained in the examples and comparative examples were punched out with a No. 1 dumbbell cutter described in JIS K6251, and the tensile elongation at break (%) at a low temperature of -10°C was measured at a tensile speed of 200 mm / min in accordance with JIS K7113. In addition, a larger value of the tensile elongation at break indicates that the tensile elongation of the vinyl chloride resin molded sheet is more excellent.

[0247] [After heating (heat aging test)]

[0248] The laminated body obtained in the examples and comparative examples, in which the polyurethane foam is added to the vinyl chloride resin molded sheet, is used as a sample. The sample is placed in an oven and heated for 400 hours at a temperature of 120°C. Next, the polyurethane foam is peeled off from the heated laminated body, and only the vinyl chloride resin molded sheet is prepared. Then, the same as the initial state (unheated state) is carried out, and the tensile elongation at break (%) of the vinyl chloride resin molded sheet at low temperature (-10°C) after heating at 120°C for 400 hours is measured.

[0249] <Surface stickiness>

[0250] The tackiness of the surface of the vinyl chloride resin molded article was evaluated by measuring the dynamic friction coefficient as shown below.

[0251] Specifically, a touch tester (manufactured by Trinity Lab Co., Ltd., product name "TL201Ts") was used to measure the dynamic friction coefficient of the surface of the vinyl chloride resin molded body before forming the laminated body under the conditions of a temperature of 23°C and a relative humidity of 50%, a load of 50 g, a speed of 10 mm / second, a test range of 50 mm, and a measurement range of 30 mm excluding 10 mm before and after the test range. The smaller the value of the dynamic friction coefficient, the more the stickiness of the surface of the vinyl chloride resin molded body is suppressed.

[0252] <Changes in hue and gloss>

[0253] The laminated body in which the foamed polyurethane molded body was lined was cut into a size of 7 cm×14 cm to prepare a test piece.

[0254] A super xenon lamp weathering tester ("SX75" manufactured by Suga Test Instruments Co., Ltd.) was used with a black panel temperature of 83°C and an irradiation intensity of 150 w / m 2 The film was irradiated with 150 MJ under the conditions of , and the change in ΔE value and gloss value (Δgloss) before and after irradiation was calculated.

[0255] ΔE is the CIE color system (L * , a * , b * ), based on the difference in brightness (L*) before and after irradiation ΔL * , the difference in chromaticity (a*, b*) Δa * and Δb * , through the formula: ΔE=[(ΔL * ) 2 +(Δa * ) 2 +(Δb * ) 2 ] 1 / 2 ΔE was calculated. A smaller ΔE value means that the change in color tone of the vinyl chloride resin molded article is suppressed and the color tone stability is excellent.

[0256] The gloss value was measured with a gloss meter (GM-268A, manufactured by Konica Minolta Japan Co., Ltd.) to measure the 60° reflectance, and the difference (change) between the gloss value before irradiation and the gloss value after irradiation, namely, Δ gloss, was obtained. The smaller the Δ gloss value, the more excellent the appearance stability of the vinyl chloride resin molded body is, and the gloss change is suppressed.

[0257] (Example 1)

[0258] <Preparation of Vinyl Chloride Resin Composition>

[0259] The components listed in Table 1, except for the plasticizer (adipic acid polyester and epoxidized soybean oil) and the release agent (vinyl chloride resin microparticles), were put into a Henschel mixer and mixed. Then, when the temperature of the mixture rose to 80°C, all the above plasticizers were added to dry it (meaning that the plasticizer was absorbed by the vinyl chloride resin particles as the vinyl chloride resin, and the above mixture became dry). Then, when the temperature of the dried mixture was cooled to 70°C or less, the release agent (vinyl chloride resin microparticles) was added to prepare a vinyl chloride resin composition.

[0260] The obtained vinyl chloride resin composition was used to evaluate powder flowability. The results are shown in Table 1.

[0261] <Formation of Vinyl Chloride Resin Molded Article>

[0262] The obtained vinyl chloride resin composition was sprinkled on a textured metal mold heated to 250°C, left for an arbitrary time to melt, and then the remaining vinyl chloride resin composition was shaken off. Then, the textured metal mold sprinkled with the vinyl chloride resin composition was placed in an oven set at 200°C, and the textured metal mold was cooled with cooling water after 60 seconds from the time of standing. When the metal mold temperature was cooled to 40°C, a 145 mm×175 mm×1 mm vinyl chloride resin molded body was demolded from the metal mold.

[0263] The obtained vinyl chloride resin molded article was used to evaluate the ratio of tetrahydrofuran-insoluble components, tensile elongation (initial), surface stickiness, color tone change, and gloss change.

[0264] <Formation of Laminated Body>

[0265] The obtained vinyl chloride resin molded sheet was cut into 100 mm×100 mm, and two cut vinyl chloride resin molded sheets were laid in a metal mold of 200 mm×300 mm×10 mm without overlapping, with the textured surface facing downward.

[0266] Separately, a polyol mixture consisting of 50 parts by mass of a propylene oxide-ethylene oxide (PO-EO) block adduct of propylene glycol (hydroxyl value 28, content of terminal EO unit = 10%, content of internal EO unit 4%), 50 parts by mass of a PO-EO block adduct of glycerol (hydroxyl value 21, content of terminal EO unit = 14%), 2.5 parts by mass of water, 0.2 parts by mass of an ethylene glycol solution of triethylenediamine (manufactured by Tosoh Corporation, trade name: "TEDA-L33"), 1.2 parts by mass of triethanolamine, 0.5 parts by mass of triethylamine, and 0.5 parts by mass of a foam stabilizer (manufactured by Shin-Etsu Chemical Co., Ltd., trade name: "F-122") and polymethylene polyphenylene polyisocyanate (polymeric MDI) were mixed at a ratio to give an index of 98 to prepare a mixed solution. Then, the prepared mixed solutions were respectively injected onto the two polyethylene resin molding sheets placed in the metal mold as described above. Then, the metal mold was covered with an aluminum plate of 348 mm × 255 mm × 10 mm, thereby sealing the metal mold. After sealing for 5 minutes, the laminated body formed by lining the foamed polyurethane molded body on the 1 mm thick vinyl chloride resin molded sheet was taken out from the mold, and the tensile elongation (after heating) of the vinyl chloride resin molded sheet in the laminated body was evaluated. The results are shown in Table 1.

[0267] (Examples 2 to 5, Comparative Examples 1 to 6)

[0268] Except that the compounding composition was changed as shown in Tables 1 to 3, the same procedure as in Example 1 was carried out to prepare a vinyl chloride resin composition, a vinyl chloride resin molded body and a laminate, and various evaluations were performed. The results are shown in Tables 1 to 3. In addition, when preparing the vinyl chloride resin composition, crosslinked vinyl chloride resin microparticles as a release agent were added simultaneously with vinyl chloride resin microparticles also as a release agent.

[0269] [Table 1]

[0270]

[0271] [Table 2]

[0272]

[0273] [Table 3]

[0274]

[0275] 1) Shin-Daiichi Vinyl Chloride Co., Ltd., product name "ZEST (registered trademark) 1700ZI" (produced by suspension polymerization, average degree of polymerization: 1700, average particle size: 129 μm)

[0276] 2) Shin-Daiichi Vinyl Chloride Co., Ltd., product name "ZEST PQLTX" (produced by emulsion polymerization, average degree of polymerization: 800, average particle size: 1.8 μm)

[0277] 3) Kao Corporation, product name "Trimex N-08" (tri-n-alkyl trimellitate (n-octyl and n-decyl groups are mixed as the n-alkyl group))

[0278] 4) ADK CIZER HPN-3130 (adipic acid polyester, viscosity: 4000 mPa·s) manufactured by ADK Co., Ltd.

[0279] 5) ADK CIZER O-130S manufactured by ADK Co., Ltd.

[0280] 6) Kyowa Chemical Industry Co., Ltd., product name "ALCAMAIZER (registered trademark) 5"

[0281] 7) Made by Mizusawa Chemical Industry Co., Ltd., product name: "MIZUKALIZER DS"

[0282] 8) Made by Showa Denko K.K., product name "Karenz DK-1"

[0283] 9) Made by Sakai Chemical Industry Co., Ltd., product name "SAKAI SZ2000"

[0284] 10) ADK Co., Ltd., product name: ADK STAB LS-12

[0285] 11) Made by Nippon Chemical Industry Co., Ltd., product name: "SLIPACKS (registered trademark) O"

[0286] 12) "Tinuvin 765" manufactured by BASF Japan Ltd. (hindered amine light stabilizer represented by the following formula (IV), compound name: bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate, molecular weight: 509)

[0287] [Chemical formula 7]

[0288]

[0289] 13) ADK STAB LA-63P (hindered amine light stabilizer represented by the following formula (V), molecular weight: about 2000)

[0290] [Chemical formula 8]

[0291]

[0292] 14) "Tinuvin 144" manufactured by BASF Japan Co., Ltd. (hindered amine-based light stabilizer represented by the following formula (III), compound name: butyl (3,5-di-tert-butyl-4-hydroxybenzyl) malonate bis (1,2,2,6,6-pentamethyl-4-piperidinyl), molecular weight: 685)

[0293] [Chemical formula 9]

[0294]

[0295] 15) Tosoh Corporation, product name: "Ryuron paste (prepared by emulsion polymerization, average particle size: 1.7 μm)

[0296] 16) Made by Dainichi Seika Co., Ltd., product name: "DA P4720 BLACK"

[0297] As can be seen from Tables 1 to 3, when the vinyl chloride resin compositions of Examples 1 to 5 comprising a vinyl chloride resin, a plasticizer in a specified amount or more, and a hindered amine light stabilizer having a molecular weight within a specified range are used, the gloss change of the formed vinyl chloride resin molded body can be suppressed compared to the case where the vinyl chloride resin compositions of Comparative Examples 1 to 6 not comprising a hindered amine light stabilizer having a molecular weight within the specified range are used.

[0298] Industrial Applicability

[0299] According to the present invention, there can be provided a vinyl chloride resin composition capable of forming a vinyl chloride resin molded body with suppressed gloss change.

[0300] Furthermore, according to the present invention, a vinyl chloride resin molded body in which gloss change is suppressed can be provided.

[0301] Furthermore, according to the present invention, a laminated body having the vinyl chloride resin molded body can be provided.

Claims

1. A vinyl chloride resin composition comprising a vinyl chloride resin, a plasticizer and a hindered amine light stabilizer having a molecular weight of 550 or more and 1500 or less, The content of the plasticizer is 75 parts by mass or more relative to 100 parts by mass of the vinyl chloride resin.

2. The vinyl chloride resin composition according to claim 1, wherein The content of the hindered amine-based light stabilizer is 0.01 parts by mass or more and 20 parts by mass or less relative to 100 parts by mass of the vinyl chloride resin.

3. The vinyl chloride resin composition according to claim 1, wherein The hindered amine light stabilizer has a monovalent organic group represented by the following formula (I): In formula (I), R 1 is a hydrogen atom or an alkyl group, and "*" represents a bonding bond.

4. The vinyl chloride resin composition according to claim 3, wherein The R 1 It is methyl.

5. The vinyl chloride resin composition according to claim 1, wherein The hindered amine light stabilizer has a monovalent organic group represented by the following formula (II): In formula (II), R 2 and R 3 Each is independently a hydrogen atom or an alkyl group, and "*" represents a bond.

6. The vinyl chloride resin composition according to claim 5, wherein The R 2 and R 3 All are tert-butyl.

7. The vinyl chloride resin composition according to claim 1, wherein The hindered amine light stabilizer contains a compound represented by the following formula (III): 。 8. The vinyl chloride resin composition according to claim 1, wherein The plasticizer contains at least one of trimellitate and polyester.

9. The vinyl chloride resin composition according to claim 1, wherein The vinyl chloride resin composition further comprises a cross-linked vinyl chloride resin.

10. The vinyl chloride resin composition according to claim 1, wherein The vinyl chloride resin composition is used for powder molding.

11. The vinyl chloride resin composition according to claim 1, wherein The vinyl chloride resin composition is used for powder slush molding. 12 . A vinyl chloride resin molded article obtained by molding the vinyl chloride resin composition according to claim 1 .

13. The vinyl chloride resin molded article according to claim 12, wherein The vinyl chloride resin molded body is used for the surface skin of automobile instrument panels. 14 . A laminate comprising a foamed polyurethane molded product and the vinyl chloride resin molded product according to claim 12 .

15. The laminate according to claim 14, wherein The laminate is used for automobile instrument panels.

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