Vinyl chloride resin composition, method for producing vinyl chloride resin composition, vinyl chloride resin molded article, and laminate

Abstract

The purpose of the present invention is to provide: a vinyl chloride resin composition which is capable of suppressing a decrease in powder fluidity even if containing a fine pulverized article of a vinyl chloride resin skin material; and a method for producing the vinyl chloride resin composition. This vinyl chloride resin composition is characterized by containing (a) vinyl chloride resin particles, (b) vinyl chloride resin microparticles A, (c) a plasticizer, and (d) a powder composition containing a powder of a vinyl chloride resin skin material.

Description

Technical Field

[0001] This invention relates to vinyl chloride resin compositions, methods for manufacturing vinyl chloride resin compositions, vinyl chloride resin molded articles, and laminates. Background Technology

[0002] Vinyl chloride resin is commonly used for a variety of applications due to its excellent properties such as cold resistance, heat resistance, and oil resistance.

[0003] Specifically, for example, in the formation of automotive interior components such as car dashboards and door trims, automotive interior materials such as skins formed from vinyl chloride resin molding bodies and laminates formed by adding foamed bodies such as polyurethane foam to skins formed from vinyl chloride resin molding bodies are used.

[0004] Furthermore, the vinyl chloride resin molded body (hereinafter also referred to as "vinyl chloride resin skin material") constituting the skin of automotive interior parts such as automotive dashboards can be manufactured by molding a vinyl chloride resin composition containing vinyl chloride resin, plasticizer, and additives such as pigments using known molding methods, for example, powder slush molding.

[0005] In recent years, from the perspectives of efficient resource utilization and environmental protection, the recycling of waste vinyl chloride resin skin materials has been highly anticipated, and various recycling methods for vinyl chloride resin skin materials are being researched. For example, Patent Document 1 discloses a method for recycling vinyl chloride resin skin materials, characterized in that, in a method for manufacturing a double-layer molded article using a dual slush molding method that continuously performs powder slush molding as the first step and powder slush molding as the second step, the powder obtained by pulverizing used vinyl chloride resin skin materials is used as the raw material for the second layer.

[0006] Existing technical documents

[0007] Patent documents

[0008] Patent document 1: Japanese Patent Application Publication No. 07-052175. Summary of the Invention

[0009] The problem the invention aims to solve

[0010] Here, vinyl chloride resin skin materials used for automotive interior parts, etc., are typically cut according to the shape of the automotive interior parts, etc., thus producing cutting residues such as burrs or ears. In recent years, from the perspective of further efficient resource utilization and environmental protection, there is a demand not only for the reuse of waste vinyl chloride resin skin materials but also for the reuse of cutting residues generated during the processing of vinyl chloride resin skin materials. Therefore, the inventors have studied the method of pulverizing waste materials such as used vinyl chloride resin skin materials and cutting residues of vinyl chloride resin skin materials, and mixing the resulting micro-pulverized material into a raw vinyl chloride resin composition (hereinafter also referred to as "virgin material") containing vinyl chloride resin particles and plasticizers, thereby achieving reuse.

[0011] However, when the micronized waste material from vinyl chloride resin skin materials is mixed into the virgin material, there is a problem that the resulting vinyl chloride resin composition has deteriorated powder flowability and cannot be well molded.

[0012] Therefore, the object of the present invention is to provide a vinyl chloride resin composition and a method thereof that can suppress the reduction of powder flowability even when the micro-pulverized material containing vinyl chloride resin skin material is pulverized.

[0013] Furthermore, the present invention aims to provide a vinyl chloride resin molded body formed by molding the above-mentioned vinyl chloride resin composition.

[0014] Furthermore, the object of the present invention is to provide a laminate having the above-described vinyl chloride resin molded body.

[0015] Solution for solving the problem

[0016] To address the aforementioned problems, the inventors conducted in-depth research. They then discovered that when mixing vinyl chloride resin and plasticizer with micronized vinyl chloride resin for skin materials to manufacture a vinyl chloride resin composition, adding vinyl chloride resin microparticles as a separating agent (powder flowability improver) can enhance the powder flowability of the resulting vinyl chloride resin composition, thus completing this invention.

[0017] That is, the object of the present invention is to advantageously solve the above-mentioned problems. [1] The present invention is a vinyl chloride resin composition comprising: (a) vinyl chloride resin particles; (b) vinyl chloride resin microparticles A; (c) a plasticizer; and (d) a powder composition comprising a powder of vinyl chloride resin skin material. In this way, the vinyl chloride resin composition comprising vinyl chloride resin microparticles A can suppress the reduction of powder flowability even in the case of a powder comprising a vinyl chloride resin skin material.

[0018] In addition, in this invention, the "volume average particle size" of vinyl chloride resin particles and vinyl chloride resin microparticles can be determined by laser diffraction according to JIS Z8825.

[0019] [2] In the vinyl chloride resin composition described in [1] above, it is preferable that the amount of the vinyl chloride resin skin material powder is 1 part by mass or more and 40 parts by mass or less relative to 100 parts by mass of the vinyl chloride resin composition. In this way, if the amount of the vinyl chloride resin skin material powder is at or above the lower limit value relative to 100 parts by mass of the vinyl chloride resin composition, the waste of the vinyl chloride resin skin material can be efficiently recycled, the environmental impact can be reduced, and the elongation at low temperature (hereinafter also referred to as "low temperature elongation") of the vinyl chloride resin molded body manufactured using the obtained vinyl chloride resin composition can be improved. Furthermore, if the amount of the vinyl chloride resin skin material powder is at or below the upper limit value relative to 100 parts by mass of the vinyl chloride resin composition, the powder flowability of the vinyl chloride resin composition can be further improved.

[0020] [3] In the vinyl chloride resin composition of [1] or [2] above, it is preferable that the volume average particle size of the vinyl chloride resin skin material powder of (d) above is 50 μm or more and 500 μm or less. In this way, if the volume average particle size of the vinyl chloride resin skin material powder is within the above-specified range, the powder flowability of the vinyl chloride resin composition can be further improved.

[0021] In addition, in this invention, the "volume average particle size" of the powder of the vinyl chloride resin skin material can be determined by laser diffraction according to JIS Z8825.

[0022] [4] In any of the vinyl chloride resin compositions described in [1] to [3] above, it is preferable that the powder composition further comprises (b-1) vinyl chloride resin particles B. In this way, if the powder composition containing the powder of the vinyl chloride resin skin material further comprises vinyl chloride resin particles B, the powder flowability of the obtained vinyl chloride resin composition can be further improved.

[0023] [5] In any of the vinyl chloride resin compositions described in [1] to [4] above, it is preferable that the total amount of vinyl chloride resin particles is 3 parts by mass or more and 40 parts by mass or less relative to 100 parts by mass of the vinyl chloride resin skin material powder. If the total amount of vinyl chloride resin particles is at or above the lower limit relative to 100 parts by mass of the vinyl chloride resin skin material powder, the powder flowability of the obtained vinyl chloride resin composition can be further improved. Furthermore, if the total amount of vinyl chloride resin particles is at or below the upper limit relative to 100 parts by mass of the vinyl chloride resin skin material powder, the reduction in strength of the obtained vinyl chloride resin molded article can be suppressed.

[0024] [6] In any of the vinyl chloride resin compositions described in [1] to [5] above, it is preferable that the total amount of all vinyl chloride resin particles is 15 parts by mass or more and 35 parts by mass or less relative to a total of 100 parts by mass of the vinyl chloride resin particles described in (a) and the powder of the vinyl chloride resin skin material described above. If the total amount of all vinyl chloride resin particles is at or above the lower limit value relative to a total of 100 parts by mass of the vinyl chloride resin particles and the powder of the vinyl chloride resin skin material, the powder flowability of the obtained vinyl chloride resin composition can be further improved. Furthermore, if the total amount of all vinyl chloride resin particles is at or below the upper limit value relative to a total of 100 parts by mass of the vinyl chloride resin particles and the powder of the vinyl chloride resin skin material described above, the reduction in strength of the obtained vinyl chloride resin molded article can be suppressed.

[0025] [7] In any of the vinyl chloride resin compositions described in [4] to [6] above, it is preferable that the content of the (b-1) vinyl chloride resin particles B in the powder composition is 2.0% by mass or more and 25% by mass or less. If the content of vinyl chloride resin particles B in the powder composition containing the powder of vinyl chloride resin skin material is at or above the lower limit value, the powder flowability of the vinyl chloride resin composition containing the powder composition can be further improved. Furthermore, if the content of vinyl chloride resin particles B in the powder composition containing the powder of vinyl chloride resin skin material is at or below the upper limit value, the reduction in strength of the obtained vinyl chloride resin molded article can be suppressed.

[0026] [8] In any of the vinyl chloride resin compositions described in [1] to [7] above, it is preferable that the falling time of the powder composition is 35 seconds or less. In this way, if the falling time of the powder composition containing the powder of the vinyl chloride resin skin material is less than or equal to the above-mentioned upper limit, the powder flowability of the vinyl chloride resin composition containing the powder composition can be further improved.

[0027] Furthermore, in this invention, the falling time of the powder composition can be determined by the method described in the examples.

[0028] [9] In any of the vinyl chloride resin compositions described in [1] to [8] above, it is preferable that the vinyl chloride resin composition contains the powder composition in a proportion of 3 parts by mass or more and 30 parts by mass or less relative to 100 parts by mass of the vinyl chloride resin particles described in (a) above. If the proportion of the powder composition containing the vinyl chloride resin skin material to 100 parts by mass of vinyl chloride resin particles is at or above the lower limit value, the low-temperature tensile elongation of the vinyl chloride resin molded body manufactured using the obtained vinyl chloride resin composition can be improved, and the waste of the vinyl chloride resin skin material can be efficiently recycled, thereby reducing the environmental impact. Furthermore, if the proportion of the powder composition containing the vinyl chloride resin skin material to 100 parts by mass of vinyl chloride resin particles is at or below the upper limit value, the powder flowability of the obtained vinyl chloride resin composition can be further improved.

[0029]

[10] In any of the vinyl chloride resin compositions described in [1] to [9] above, it is preferable that the plasticizer in (c) comprises at least one of trimellitate and polyester. If the vinyl chloride resin composition comprises trimellitate, the heat shrinkage resistance of the vinyl chloride resin molded article formed using the vinyl chloride resin composition can be improved. Furthermore, if the vinyl chloride resin composition comprises polyester, the flowability of the vinyl chloride resin composition can be further improved, and the softness of the vinyl chloride resin molded article formed using the vinyl chloride resin composition at low temperatures can be improved.

[0030]

[11] The vinyl chloride resin composition of any one of [1] to

[10] above is preferably used for powder molding. In this way, if the above vinyl chloride resin composition is used for powder molding, a vinyl chloride resin molded body that can be well used as an automotive interior material such as a dashboard cover for automobiles can be easily obtained.

[0031]

[12] The vinyl chloride resin composition of any one of [1] to

[11] above is preferably used for powder slush molding. In this way, if the above vinyl chloride resin composition is used for powder slush molding, it is easier to obtain a vinyl chloride resin molded body that can be well used as an automotive interior material such as a dashboard cover for automobiles.

[0032] Furthermore, the object of the present invention is to advantageously solve the above-mentioned problems.

[13] The present invention is a method for manufacturing a vinyl chloride resin composition, comprising: a step of preparing a raw material vinyl chloride resin composition comprising (a) vinyl chloride resin particles, (b) vinyl chloride resin microparticles A and (c) a plasticizer; a step of preparing a powder composition comprising a powder for making a vinyl chloride resin skin material; and a step of adding and mixing the powder composition into the raw material vinyl chloride resin composition. In this way, if a powder composition comprising a powder for making a vinyl chloride resin skin material is added and mixed into the raw material vinyl chloride resin composition, a vinyl chloride resin composition capable of suppressing the reduction of powder flowability can be easily obtained.

[0033]

[14] In the method for manufacturing the vinyl chloride resin composition described in

[13] above, it is preferable that the step of preparing the powder composition containing the powder of the vinyl chloride resin skin material includes the step of adding and mixing (b-1) vinyl chloride resin particles B into the powder of the vinyl chloride resin skin material. In this way, if (b-1) vinyl chloride resin particles B are added and mixed into the powder of the vinyl chloride resin skin material, a vinyl chloride resin composition with further excellent powder flowability can be easily obtained.

[0034] Furthermore, the object of the present invention is to advantageously solve the above-mentioned problems.

[15] The present invention is a vinyl chloride resin molded body, which is formed by molding the vinyl chloride resin composition of any one of [1] to

[12] above. If the above-mentioned vinyl chloride resin composition is molded, a vinyl chloride resin molded body can be easily obtained.

[0035]

[16] The vinyl chloride resin molded article described above

[15] is preferably used for automotive dashboard skin. The vinyl chloride resin molded article described above can be well used as a dashboard skin for automotive dashboards.

[0036] Furthermore, the object of the present invention is to advantageously solve the above-mentioned problems.

[17] The present invention is a laminate having a foamed polyurethane molded body and the vinyl chloride resin molded body described above

[15] or

[16] . If the above-mentioned vinyl chloride resin molded body is used, a laminate having a foamed polyurethane molded body and a vinyl chloride resin molded body can be easily obtained.

[0037]

[18] The laminate described in

[17] above is preferably for use in an automotive dashboard. The laminate described above can be well used as an automotive dashboard.

[0038] Invention Effects

[0039] According to the present invention, a vinyl chloride resin composition and a method thereof are provided that can suppress the reduction of powder flowability even when the micro-pulverized material containing vinyl chloride resin skin material is pulverized.

[0040] Furthermore, according to the present invention, it is possible to provide a vinyl chloride resin molded body formed by molding the above-described vinyl chloride resin composition.

[0041] Furthermore, according to the present invention, it is possible to provide a laminate having the above-described vinyl chloride resin molded body. Detailed Implementation

[0042] The embodiments of the present invention will be described in detail below.

[0043] The vinyl chloride resin composition of the present invention can be used, for example, in forming the vinyl chloride resin molded articles of the present invention. Furthermore, the vinyl chloride resin composition of the present invention can be manufactured, for example, by the manufacturing method of the vinyl chloride resin composition of the present invention. Moreover, the vinyl chloride resin molded articles formed using the vinyl chloride resin composition of the present invention are preferably used as automotive interior materials, such as the outer skins of automotive interior parts like dashboards and door trims.

[0044] Furthermore, the vinyl chloride resin molded articles of the present invention can be used, for example, in forming the laminates of the present invention. Moreover, the laminates formed using the vinyl chloride resin molded articles of the present invention are preferably used as automotive interior materials, for example, in the manufacture of automotive interior parts such as dashboards and door trims.

[0045] (vinyl chloride resin composition)

[0046] The vinyl chloride resin composition of the present invention is characterized in that it comprises (a) vinyl chloride resin particles, (b) vinyl chloride resin microparticles A, (c) a plasticizer, and (d) a powder composition comprising a powder containing a vinyl chloride resin skin material. Furthermore, the vinyl chloride resin composition of the present invention may optionally further comprise additives other than these (a) vinyl chloride resin particles, (b) vinyl chloride resin microparticles A, (c) a plasticizer, and (d) a powder composition comprising a powder containing a vinyl chloride resin skin material.

[0047] Furthermore, since the vinyl chloride resin composition of the present invention contains vinyl chloride resin particles, even powder containing vinyl chloride resin for surface materials can suppress the reduction of powder flowability. Therefore, if the vinyl chloride resin composition of the present invention is used, vinyl chloride resin molded articles, which are preferred as automotive interior materials such as dashboard skins and door trim skins, can be obtained well.

[0048] Furthermore, from the viewpoint that vinyl chloride resin molded articles that can be well used as, for example, automotive interior materials 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.

[0049] <vinyl chloride resin>

[0050] Here, as the vinyl chloride resin capable of constituting (a) vinyl chloride resin particles and (b) vinyl chloride resin microparticles A, in addition to homopolymers of vinyl chloride, examples include vinyl chloride copolymers containing preferably 50% by mass or more, more preferably 70% by mass or more of vinyl chloride units. There are no particular limitations on the comonomers of the vinyl chloride copolymers; for example, one or more substances described in International Publication No. 2016 / 098344 can be used alone or in any proportion.

[0051] The aforementioned vinyl chloride resin can be manufactured by any of the existing known manufacturing methods, such as suspension polymerization, emulsion polymerization, solution polymerization, and bulk polymerization.

[0052] In the vinyl chloride resin composition of the present invention, (a) vinyl chloride resin particles generally function as a matrix resin, and (b) vinyl chloride resin microparticles A function as a separating agent (powder flowability improver) as described later. Moreover, (a) vinyl chloride resin particles are preferably manufactured by suspension polymerization, and (b) vinyl chloride resin microparticles A are preferably manufactured by emulsion polymerization.

[0053] In addition, in this invention, "resin particles" refers to particles with a diameter of 30 μm or more, and "resin microparticles" refers to particles with a diameter of less than 30 μm.

[0054] <(a) Vinyl chloride resin particles>

[0055] The volume average particle size of the (a) vinyl chloride resin particles is typically 30 μm or more, preferably 50 μm or more, more preferably 100 μm or more, and further preferably 500 μm or less, more preferably 200 μm or less. If the volume average particle size of (a) vinyl chloride resin particles is at or above the aforementioned lower limit, the powder flowability of the vinyl chloride resin composition can be further improved. Furthermore, if the volume average particle size of (a) vinyl chloride resin particles is at or below the aforementioned upper limit, the meltability of the vinyl chloride resin composition can be improved, and the surface smoothness of the vinyl chloride resin molded article formed using the composition can also be improved.

[0056] Furthermore, the average degree of polymerization of the vinyl chloride resin constituting the vinyl chloride resin particles described above (a) is preferably 1000 or more, more preferably 1300 or more, and preferably 5000 or less, more preferably 4000 or less, and even more preferably 3500 or less. If the average degree of polymerization of the vinyl chloride resin constituting the vinyl chloride resin particles described above (a) is within the above range, the physical strength of the vinyl chloride resin molded body formed using the vinyl chloride resin composition can be sufficiently ensured, while also improving, for example, tensile properties, particularly elongation at break. Moreover, a vinyl chloride resin molded body with good elongation at break can be preferably used as an automotive interior material, such as the dashboard cover of an automobile, which exhibits excellent ductility and will not scatter fragments when the airbag expands and deploys as designed. Furthermore, if the average degree of polymerization of the vinyl chloride resin constituting the vinyl chloride resin particles described above is below the upper limit, the meltability of the vinyl chloride resin composition can be improved. The average degree of polymerization is measured according to JIS K6720-2.

[0057] <(b) Vinyl chloride resin particles A>

[0058] Vinyl chloride resin microparticles A function as a separating agent (powder flowability improver) to improve the flowability of the vinyl chloride resin composition powder, and are a component that is different from the vinyl chloride resin particles mentioned above (a).

[0059] The volume average particle size of the vinyl chloride resin particles A in (b) is typically 30 μm or less, preferably 10 μm or less, more preferably 5 μm or less, and further preferably 0.1 μm or more, more preferably 1 μm or more. If the volume average particle size of the vinyl chloride resin particles A in (b) is at or above the aforementioned lower limit, the powder flowability of the vinyl chloride resin composition can be further improved without excessively reducing the size, for example, that of the separating agent. Furthermore, if the volume average particle size of the vinyl chloride resin particles A in (b) is at or below the aforementioned upper limit, the meltability of the vinyl chloride resin composition can be improved, and the surface smoothness of the formed vinyl chloride resin molded article can be enhanced.

[0060] The average degree of polymerization of the vinyl chloride resin constituting the vinyl chloride resin particles A in (b) is preferably 500 or more, more preferably 700 or more, more preferably 2600 or less, and more preferably 2400 or less. If the average degree of polymerization of the vinyl chloride resin constituting the vinyl chloride resin particles A in (b) as a separating agent is at or above the lower limit mentioned above, the powder flowability of the vinyl chloride resin composition can be further improved, and the low-temperature tensile elongation of the molded article obtained using the composition can be improved. Furthermore, if the average degree of polymerization of the vinyl chloride resin constituting the vinyl chloride resin particles A in (b) is below the upper limit mentioned above, the meltability of the vinyl chloride resin composition can be improved, and the surface smoothness of the vinyl chloride resin molded article formed using the composition can be improved.

[0061] Furthermore, the content of the above-mentioned (b) vinyl chloride resin particles A is preferably 10 parts by mass or more, more preferably 20 parts by mass or more, more preferably 40 parts by mass or less, and more preferably 30 parts by mass or less, relative to 100 parts by mass of (a) vinyl chloride resin particles.

[0062] <(c) Plasticizers>

[0063] The vinyl chloride resin composition of the present invention includes (c) a plasticizer. By including (c) a plasticizer in the vinyl chloride resin composition, the formed vinyl chloride resin molded article can exhibit sufficient softness, and therefore can be preferably used as an automotive interior material.

[0064] Here, the content of plasticizer (c) in the vinyl chloride resin composition is preferably 60 parts by mass or more, more preferably 70 parts by mass or more, and more preferably 130 parts by mass or less, more preferably 120 parts by mass or less, relative to 100 parts by mass of vinyl chloride resin (i.e., the vinyl chloride resin constituting (a) vinyl chloride resin particles, (b) vinyl chloride resin microparticles A, and (b-1) vinyl chloride resin microparticles B described later, the same below). If the content of plasticizer (c) in the vinyl chloride resin composition is at or above the above lower limit relative to 100 parts by mass of vinyl chloride resin, the softness of the formed vinyl chloride resin molded article can be improved. On the other hand, if the content of plasticizer (c) in the vinyl chloride resin composition is at or below the above upper limit relative to 100 parts by mass of vinyl chloride resin, the powder flowability of the vinyl chloride resin composition can be further improved.

[0065] The plasticizer (c) included in the vinyl chloride resin composition of the present invention is not particularly limited, but at least one of (c1) polyester and (c2) trimellitate is preferred. In addition, plasticizers other than (c1) polyester and (c2) trimellitate (hereinafter sometimes referred to as "(c3) other plasticizers") may also be used as (c) plasticizer.

[0066] <<(c1) Polyester>>

[0067] (c) The plasticizer preferably contains (c1) polyester. If the plasticizer (c) contains (c1) polyester, the heat shrinkage resistance of the formed vinyl chloride resin molded article can be improved.

[0068] The polyester included in (c) plasticizer (c1) is not particularly limited, and polyesters such as those containing structural units from adipic acid (adipic acid-based polyesters), those containing structural units from sebacic acid (sebacic acid-based polyesters), and those containing structural units from phthalic acid (phthalic acid-based polyesters) can be used. Furthermore, one of these polyesters can be used alone, or two or more can be mixed in any proportion.

[0069] From the viewpoint of further improving the heat shrinkage resistance of the formed vinyl chloride resin molded body, as the (c1) polyester, it is preferable to use a polyester containing structural units derived from bisacrylic acid, and particularly preferable to use a polyester containing structural units derived from bisacrylic acid and structural units derived from 3-methyl-1,5-pentanediol.

[0070] For ease of explanation, polyesters containing structural units derived from dioxic acid and structural units derived from 3-methyl-1,5-pentanediol will be referred to as "polyester A".

[0071] Here, the polyester A containing the structural units specified above may have other structural units besides the structural units derived from ascorbic acid and the structural units derived from 3-methyl-1,5-pentanediol. The total percentage of the structural units derived from ascorbic acid and the structural units derived from 3-methyl-1,5-pentanediol is preferably 50% by mass or more, more preferably 80% by mass or more, of all structural units. Furthermore, the polyester A containing the structural units specified above preferably has only the structural units derived from ascorbic acid and the structural units derived from 3-methyl-1,5-pentanediol as repeating units.

[0072] Furthermore, polyester A containing the aforementioned structural units is not particularly limited and can be obtained by polycondensation of adipic acid with 3-methyl-1,5-pentanediol. Additionally, the polycondensation can be carried out in the presence of a catalyst. Furthermore, the polycondensation can be carried out using alcohols and / or monocarboxylic acids as terminating agents. Moreover, the polycondensation of adipic acid with 3-methyl-1,5-pentanediol and the resulting polycondensate followed by the termination reaction with the terminating agent can be carried out simultaneously or separately. Furthermore, the product obtained after polycondensation and the termination reaction can be subjected to post-treatments such as distillation. Moreover, known conditions can be used for the polycondensation reaction conditions, such as the amounts of monomer, catalyst, and terminating agent used.

[0073] Alternatively, commercially available products can be used as polyester A, which contains the structural units specified above.

[0074] There are no particular limitations on the catalysts used in polycondensation reactions; examples include dibutyltin oxide and tetraalkyl titanate.

[0075] In addition, examples of alcohols that can be used as terminal terminating components include methanol, ethanol, propanol, isopropanol, butanol, isobutanol, pentanol, hexanol, isohexanol, heptanol, isohepanol, octanol, isooctanol, 2-ethylhexanol, nonanol, isononol, decanol, isodecanol, undecanol, isoundecanol, dodecanol, tridecanol, isotridecanol, tetradecanol, pentadecanol, hexadecanol, heptadecanol, octadecanol, cellosol, carbitol, phenol, nonylphenol, benzyl alcohol, and mixtures thereof.

[0076] Furthermore, examples of monocarboxylic acids that can be used as terminal terminating components include acetic acid, propionic acid, butyric acid, isobutyric acid, valeric acid, neovaleric acid, hexanoic acid, heptanoic acid, octanoic acid, 2-ethylhexanoic acid, nonanoic acid, decanoic acid, undecanoic acid, lauric acid, tridecanoic acid, myristic acid, pentadecanoic acid, palmitic acid, heptadecanoic acid, stearic acid, benzoic acid, and mixtures thereof.

[0077] 2-Ethylhexanol is particularly preferred as the terminal terminating component.

[0078] Furthermore, the number average molecular weight of the polyester A containing the structural units specified above is preferably 1,000 or more, more preferably 2,000 or more, more preferably 10,000 or less, and more preferably 7,000 or less.

[0079] In addition, the number-average molecular weight can be determined by vapor pressure osmosis (VPO).

[0080] Furthermore, the acid value of polyester A containing the structural units specified above is preferably 1 or less.

[0081] Furthermore, the hydroxyl value of polyester A containing the structural units specified above is preferably 30 or less.

[0082] Furthermore, the viscosity of polyester A containing the structural units specified above is preferably 500 mPa·s or more, more preferably 1000 mPa·s or more, more preferably 8000 mPa·s or less, and more preferably 5000 mPa·s or less.

[0083] In addition, "viscosity" can be measured at 23°C according to JIS Z8803.

[0084] (c) The content of (c1) polyester in the plasticizer is preferably 50% by mass or more, more preferably 55% by mass or more, even more preferably 60% by mass or more, preferably 97% by mass or less, and more preferably 96% by mass or less. If the content of (c1) polyester in the plasticizer is at or above the lower limit mentioned above, the heat shrinkage resistance of the formed vinyl chloride resin molded article can be further improved. On the other hand, if the content of (c1) polyester in the plasticizer is at or below the upper limit mentioned above, the flexibility of the formed vinyl chloride resin molded article at low temperature can be well maintained.

[0085] Furthermore, the content of (C1) polyester in the vinyl chloride resin composition, relative to 100 parts by weight of the aforementioned vinyl chloride resin, is preferably 30 parts by weight or more, more preferably 40 parts by weight or more, even more preferably 50 parts by weight or more, and still more preferably 60 parts by weight or more, preferably 120 parts by weight or less, and more preferably 110 parts by weight or less. If the content of (C1) polyester in the vinyl chloride resin composition is at or above the aforementioned lower limit, the heat shrinkage resistance of the formed vinyl chloride resin molded article can be further improved. On the other hand, if the content of (C1) polyester in the vinyl chloride resin composition is at or below the aforementioned upper limit, the powder flowability of the vinyl chloride resin composition can be further improved.

[0086] <<(c2)trimethacrylate>>

[0087] (c) The plasticizer preferably contains (c2) trimellitate. If the plasticizer (c) contains (c2) trimellitate, then (c2) trimellitate can be well absorbed by the above-mentioned vinyl chloride resin ((a) vinyl chloride resin particles, (b) vinyl chloride resin microparticles A, (b-1) vinyl chloride resin microparticles B), thus improving the powder flowability of the vinyl chloride resin composition. Furthermore, if the plasticizer (c) contains (c2) trimellitate, then the flexibility of the formed vinyl chloride resin molded article at low temperatures can be improved.

[0088] (c) The trimellitate contained in the plasticizer is preferably an ester compound of trimellitic acid and a monohydric alcohol.

[0089] Specific examples of the aforementioned monohydric alcohols are not particularly limited, and aliphatic alcohols such as 1-hexanol, 1-heptanol, 1-octanol, 2-ethylhexanol, 1-nonanol, 1-decanol, 1-undecanol, and 1-dodecanol can be cited. Among these, aliphatic alcohols with 6 to 18 carbon atoms are preferred as monohydric alcohols, and straight-chain aliphatic alcohols with 6 to 18 carbon atoms are more preferred.

[0090] Of these, the (c2) trimellitate is preferably a trimellitate formed by substantially esterifying the carboxyl group of trimellitic acid with the aforementioned monohydric alcohol. The alcohol residues in the trimellitate may be derived from the same alcohol or from different alcohols.

[0091] The aforementioned (c2) trimellitate can be formed from a single compound or a mixture of different compounds.

[0092] Preferred examples of (c2) trimellitic esters include 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, trialkyl trimellitate (an ester having two or more alkyl groups with different numbers of carbon atoms in the molecule [wherein the number of carbon atoms is 6 to 18]), trialkyl trimellitate (an ester having two or more alkyl groups with different numbers of carbon atoms in the molecule [wherein the number of carbon atoms is 6 to 18]), and mixtures thereof.

[0093] More preferred examples of trimellitic esters include trioctyl trimellitate, tri-(2-ethylhexyl) trimellitate, tri-nonyl trimellitate, tri-decyl trimellitate, tri-alkyl trimellitate (esters having two or more alkyl groups with different numbers of carbon atoms in the molecule [wherein the number of carbon atoms is 6 to 18]) and mixtures thereof.

[0094] (c) The content of (c2) trimellitate in the plasticizer is preferably 5% by mass or more, more preferably 10% by mass or more, preferably 97% by mass or less, and more preferably 96% by mass or less. If the content of (c2) trimellitate in the plasticizer is at or above the lower limit mentioned above, the powder flowability of the vinyl chloride resin composition can be further improved, and the softness of the formed vinyl chloride resin molded body at low temperature can be further improved. On the other hand, if the content of (c2) trimellitate in the plasticizer is at or below the upper limit mentioned above, the heat shrinkage resistance of the formed vinyl chloride resin molded body can be improved.

[0095] Furthermore, the content of (C2) trimellitate in the vinyl chloride resin composition is preferably 5 parts by mass or more, preferably 80 parts by mass or less, more preferably 60 parts by mass or less, and even more preferably 50 parts by mass or less, relative to 100 parts by mass of the aforementioned vinyl chloride resin. If the content of (C2) trimellitate in the vinyl chloride resin composition is at or above the aforementioned lower limit, the powder flowability of the vinyl chloride resin composition can be further improved, and the softness of the formed vinyl chloride resin molded article at low temperatures can be further improved. On the other hand, if the content of (C2) trimellitate in the vinyl chloride resin composition is at or below the aforementioned upper limit, the heat shrinkage resistance of the formed vinyl chloride resin molded article can be improved.

[0096] <<(c3) Other Plasticizers>>

[0097] The plasticizer (c) in the vinyl chloride resin composition may also optionally include other plasticizers (c3) besides the polyester (c1) and trimellitate (c2) mentioned above.

[0098] Specific examples of other plasticizers (c3) include those other than polyesters (c1) and trimellitate (c2) described in International Publication No. 2016 / 098344. From the viewpoint of further improving the flexibility of the formed vinyl chloride resin molded body at low temperatures, epoxidized soybean oil is particularly preferred.

[0099] (c) The content of the other plasticizers in (c3) of the plasticizer is not particularly limited, but is preferably 0% by mass or more and 15% by mass or less. If the content of the other plasticizers in (c3) of the plasticizer is within the above range, the softness of the formed vinyl chloride resin molded body at low temperature after heating can be improved.

[0100] Furthermore, the content of the other plasticizers (c3) mentioned above in the vinyl chloride resin composition is not particularly limited, and can be 0 parts by mass or more and 15 parts by mass or less relative to 100 parts by mass of the vinyl chloride resin mentioned above.

[0101] Furthermore, from the viewpoint of further improving the flexibility of the formed vinyl chloride resin molded body at low temperatures, as (c3) other plasticizers, it is preferable to use epoxidized vegetable oil such as epoxidized soybean oil, which is 2 or more but less than 7 parts by weight relative to 100 parts by weight of the above-mentioned vinyl chloride resin.

[0102] <(d) Powder compositions containing vinyl chloride resin skin materials>

[0103] The vinyl chloride resin composition of the present invention includes (d) a powder composition comprising a powder of vinyl chloride resin skin material. Here, the aforementioned vinyl chloride resin skin material powder is obtained by pulverizing waste materials from vinyl chloride resin skin materials (vinyl chloride resin molded bodies). The aforementioned vinyl chloride resin skin material may be used vinyl chloride resin skin material separated and recycled from automotive dashboards, etc., or it may be burrs, ears, or other cutting residues generated during processing after manufacturing the vinyl chloride resin skin material. Alternatively, the aforementioned vinyl chloride resin skin material may be unused vinyl chloride resin skin material such as surplus inventory.

[0104] Here, the powder of the aforementioned vinyl chloride resin skin material is obtained by pulverizing a skin material containing vinyl chloride resin and a plasticizer, and optionally also containing additives. Therefore, the powder of the aforementioned vinyl chloride resin skin material is generally formed from particles containing vinyl chloride resin and a plasticizer, and optionally also containing additives.

[0105] In addition, the same substances as those described above and below can be cited as vinyl chloride resins, plasticizers, and additives.

[0106] The size of the powder of the above-mentioned vinyl chloride resin skin material is not particularly limited. From the viewpoint of further improving the powder flowability of the vinyl chloride resin composition, the volume average particle size of the powder of the vinyl chloride resin skin material is preferably 50 μm or more, more preferably 80 μm or more, and preferably 500 μm or less, more preferably 300 μm or less.

[0107] The powder of the above-mentioned vinyl chloride resin skin material is not particularly limited and can be obtained by, for example, the following method: cutting the waste of the vinyl chloride resin skin material into coarse powder by using a sheet granulator or the like to obtain coarse powder, and then finely pulverizing the coarse powder by cryogenic pulverization.

[0108] Furthermore, the amount of the aforementioned vinyl chloride resin skin material powder relative to 100 parts by weight of the vinyl chloride resin composition is preferably 1 part by weight or more, more preferably 3 parts by weight or more, and preferably 40 parts by weight or less, more preferably 30 parts by weight or less. If the amount of the vinyl chloride resin skin material powder relative to 100 parts by weight of the vinyl chloride resin composition is at or above the aforementioned lower limit, waste from the vinyl chloride resin skin material can be efficiently recycled, reducing environmental impact, and simultaneously improving the low-temperature tensile elongation of the vinyl chloride resin molded articles manufactured using the obtained vinyl chloride resin composition. If the amount of the vinyl chloride resin skin material powder relative to 100 parts by weight of the vinyl chloride resin composition is at or below the aforementioned upper limit, the powder flowability of the vinyl chloride resin composition can be further improved.

[0109] Furthermore, from the same viewpoint as above, the amount of the powder of the above-mentioned vinyl chloride resin skin material is preferably 1 part by mass or more, more preferably 3 parts by mass or more, and more preferably 50 parts by mass or less, more preferably 40 parts by mass or less, relative to 100 parts by mass of (a) vinyl chloride resin particles.

[0110] The powder composition described above preferably further comprises (b-1) vinyl chloride resin particles B. If the powder composition further comprises (b-1) vinyl chloride resin particles B, the powder flowability of the vinyl chloride resin composition can be further improved. Furthermore, the (b-1) vinyl chloride resin particles B can be the same substance as the (b) vinyl chloride resin particles A described above.

[0111] Furthermore, the method for obtaining a powder composition that also contains (b-1) vinyl chloride resin particles B will be described in the section on "Method for Manufacturing Vinyl Chloride Resin Composition" which will be described later.

[0112] The content ratio of (b-1)vinyl chloride resin particles B in the above-mentioned powder composition is not particularly limited. When the powder composition is 100% by mass, it is preferably 2.0% by mass or more, more preferably 3.0% by mass or more, and further preferably 25% by mass or less, more preferably 20% by mass or less. If the content ratio of (b-1)vinyl chloride resin particles B in the above-mentioned powder composition is at or above the lower limit value, the powder flowability of the vinyl chloride resin composition can be further improved. In addition, if the content ratio of (b-1)vinyl chloride resin particles B in the above-mentioned powder composition is at or below the upper limit value, the reduction in strength of the obtained vinyl chloride resin molded article can be suppressed.

[0113] <<Contains Proportion>>

[0114] The content ratio of the powder composition in the vinyl chloride resin composition relative to 100 parts by weight of (a) vinyl chloride resin particles is preferably 1 part by weight or more, more preferably 3 parts by weight or more, and further preferably 40 parts by weight or less, more preferably 30 parts by weight or less. If the content ratio of the powder composition in the vinyl chloride resin composition is at or above the lower limit, the low-temperature tensile elongation of the vinyl chloride resin molded body manufactured using the obtained vinyl chloride resin composition can be improved, and waste materials made of vinyl chloride resin skin material can be efficiently recycled, thereby reducing the environmental impact. Furthermore, if the content ratio of the powder composition containing the powder of vinyl chloride resin skin material relative to 100 parts by weight of vinyl chloride resin particles is at or below the upper limit, the powder flowability of the obtained vinyl chloride resin composition can be further improved.

[0115] <<Characteristics>>

[0116] From the viewpoint of further improving the powder flowability of the vinyl chloride resin composition, the falling time of the powder composition is preferably 35 seconds or less, more preferably 30 seconds or less, and even more preferably 25 seconds or less.

[0117] Furthermore, from the viewpoint of further improving the powder flowability of the vinyl chloride resin composition, the bulk density of the above-mentioned powder composition is preferably 0.40 g / cm³. 3 The above, more preferably 0.45 g / cm 3 In addition, the preferred value is 0.60 g / cm³. 3 The following is more preferably 0.55 g / cm³. 3 the following.

[0118] Furthermore, in this invention, the bulk density of the above-mentioned powder composition can be determined by the method described in the examples.

[0119] <Additives>

[0120] In addition to the above-mentioned components, the vinyl chloride resin composition of the present invention may also contain various additives. As additives, there are no particular limitations, but examples include: lubricants; stabilizers such as perchloric acid-treated hydrotalcite, zeolite, β-diketone, and fatty acid metal salts; release agents; other releasing agents besides the above-mentioned vinyl chloride resin particles A and B; impact modifiers; perchloric acid compounds other than perchloric acid-treated hydrotalcite (sodium perchlorate, potassium perchlorate, etc.); antioxidants; mildew inhibitors; flame retardants; antistatic agents; fillers; light stabilizers; foaming agents; pigments, etc.

[0121] Furthermore, as additives that can be included in the vinyl chloride resin composition of the present invention, substances such as those described in International Publication No. 2016 / 098344 can be used, and their preferred content can also be the same as that described in International Publication No. 2016 / 098344.

[0122] <Content ratio of vinyl chloride resin particles>

[0123] The amount of all vinyl chloride resin particles in the vinyl chloride resin composition of the present invention (i.e., the total of (b) vinyl chloride resin particles A and any added (b-1) vinyl chloride resin particles B. The same applies below) relative to 100 parts by weight of vinyl chloride resin skin material powder is preferably 3 parts by weight or more, more preferably 4 parts by weight or more, and further preferably 40 parts by weight or less, more preferably 20 parts by weight or less. If the amount of all vinyl chloride resin particles relative to 100 parts by weight of vinyl chloride resin skin material powder is the above-mentioned lower limit value or more, the powder flowability of the obtained vinyl chloride resin composition can be further improved. In addition, if the amount of all vinyl chloride resin particles relative to 100 parts by weight of vinyl chloride resin skin material powder is the above-mentioned upper limit value or less, the reduction in strength of the obtained vinyl chloride resin molded article can be suppressed.

[0124] Furthermore, from the same viewpoint as above, the total amount of vinyl chloride resin particles in the vinyl chloride resin composition of the present invention is preferably 3 parts by mass or more, more preferably 5 parts by mass or more, and even more preferably 15 parts by mass or more, relative to a total of 100 parts by mass of (a) vinyl chloride resin particles and vinyl chloride resin skin material powder. In addition, it is preferably 40 parts by mass or less, more preferably 35 parts by mass or less, and even more preferably 30 parts by mass or less.

[0125] Furthermore, from the same viewpoint as above, the amount of all vinyl chloride resin particles in the vinyl chloride resin composition of the present invention is preferably 7% by mass or more, more preferably 8% by mass or more, and further preferably 15% by mass or less, more preferably 12% by mass or less, when the vinyl chloride resin composition is 100% by mass.

[0126] <Characteristics>

[0127] The falling time of the vinyl chloride resin composition is preferably 20 seconds or less, more preferably 19 seconds or less, and even more preferably 18 seconds or less. If the falling time of the vinyl chloride resin composition is below the above-mentioned upper limit, the powder flowability is further improved.

[0128] Furthermore, from the viewpoint of further improving the flowability of the vinyl chloride resin composition powder, the bulk density of the vinyl chloride resin composition is preferably 0.50 g / cm³. 3 The above, more preferably 0.52 g / cm 3 In addition, the preferred value is 0.70 g / cm³. 3 The following is more preferably 0.65 g / cm³ 3 the following.

[0129] Furthermore, in this invention, the bulk density of the vinyl chloride resin composition can be determined by the method described in the examples.

[0130] (Method for manufacturing vinyl chloride resin composition)

[0131] The vinyl chloride resin composition of the present invention can be manufactured by mixing the above-mentioned components.

[0132] The vinyl chloride resin composition of the present invention is not particularly limited and can be suitably manufactured by, for example, a method for manufacturing the vinyl chloride resin composition of the present invention comprising the following steps: a step of preparing a raw material vinyl chloride resin composition comprising (a) vinyl chloride resin particles, (b) vinyl chloride resin microparticles A and (c) a plasticizer (preparation step of raw material vinyl chloride resin composition); a step of preparing a powder composition comprising a powder for making a skin material from vinyl chloride resin (preparation step of powder composition); and a step of adding and mixing the powder composition into the above-mentioned raw material vinyl chloride resin composition (mixing step). Each step will be described below.

[0133] <Preparation process of the raw material vinyl chloride resin composition>

[0134] In the preparation step of the raw material vinyl chloride resin composition, a raw material vinyl chloride resin composition comprising (a) vinyl chloride resin particles, (b) vinyl chloride resin microparticles A, (c) a plasticizer, and various additives further formulated as needed is prepared. The above-mentioned raw material vinyl chloride resin composition can be a commercially available product or can be prepared by mixing the above components. Furthermore, (a) vinyl chloride resin particles, (b) vinyl chloride resin microparticles A, (c) plasticizer, and various additives can be the substances described above in the "Vinyl Chloride Resin Composition" section.

[0135] Here, there is no particular limitation on the method of mixing (a) vinyl chloride resin particles, (b) vinyl chloride resin microparticles A, (c) plasticizer, and various additives that may be further formulated as needed. For example, a method can be given by dry mixing of the above components except for vinyl chloride resin microparticles A, followed by adding vinyl chloride resin microparticles A and mixing.

[0136] Dry mixing is preferably performed using a Henschel mixer. Furthermore, there are no particular limitations on the temperature during dry mixing, but it is preferably 50°C or higher, more preferably 70°C or higher, and most preferably below 200°C.

[0137] <Preparation process of powder composition>

[0138] In the preparation step of the powder composition, a powder containing a vinyl chloride resin skin material and a powder composition that optionally contains (b-1) vinyl chloride resin particles B are prepared. The above powder composition can be a commercially available product, or it can be obtained by pulverizing the vinyl chloride resin skin material to make powder, and optionally adding and mixing (b-1) vinyl chloride resin particles B into the obtained pulverized material.

[0139] Here, the powder of the vinyl chloride resin skin material is not particularly limited, and can be obtained by pulverizing the vinyl chloride resin skin material by the method described in item "(d) Powder Composition Containing Powder of Vinyl Chloride Resin Skin Material". Furthermore, the preferred properties of the vinyl chloride resin skin material powder are the same as those described in item "(d) Powder Composition Containing Powder of Vinyl Chloride Resin Skin Material". In addition, as (b-1) vinyl chloride resin microparticle B, the (b) vinyl chloride resin microparticle A described in item "Vinyl Chloride Resin Composition" can be used.

[0140] The preparation step of the powder composition preferably includes adding and mixing (b-1) vinyl chloride resin particles B into the powder of the vinyl chloride resin skin material. If (b-1) vinyl chloride resin particles B are mixed with the powder of the vinyl chloride resin skin material to obtain a powder composition that also contains (b-1) vinyl chloride resin particles B, then a vinyl chloride resin composition with further excellent powder flowability can be easily obtained using this powder composition.

[0141] There are no particular limitations on the method of mixing (b-1) vinyl chloride resin particles B with the powder of vinyl chloride resin skin material, and known mixing devices such as cooling mixers can be used.

[0142] From the viewpoint of further suppressing the decrease in powder flowability, it is preferable to heat the powder of the vinyl chloride resin skin material to a temperature of 70°C or higher and 120°C or lower before adding (b-1) vinyl chloride resin microparticles B.

[0143] Furthermore, from the viewpoint of further suppressing the reduction of powder flowability, the addition temperature (temperature of the powder of vinyl chloride resin skin material) when adding and mixing (b-1) vinyl chloride resin particles B into the powder of vinyl chloride resin skin material is preferably 70°C or higher and 90°C or lower.

[0144] Furthermore, the amount of (b-1)vinyl chloride resin microparticles B added relative to 100 parts by weight of the vinyl chloride resin skin material powder is preferably 3 parts by weight or more, more preferably 5 parts by weight or more, even more preferably 10 parts by weight or more, even more preferably 15 parts by weight or more, and preferably 30 parts by weight or less.

[0145] <Mixed Processes>

[0146] In the mixing process, the raw vinyl chloride resin composition obtained in the preparation process of the raw material vinyl chloride resin composition is mixed with the powder composition obtained in the preparation process of the powder composition to obtain the vinyl chloride resin composition.

[0147] The mixing method is not particularly limited, and known mixing devices such as cooling mixers can be used. Furthermore, the mixing temperature is not particularly limited; for example, room temperature is acceptable.

[0148] Furthermore, the mixing ratio of the powder composition relative to 100 parts by weight of the raw material vinyl chloride resin composition is preferably 5 parts by weight or more, more preferably 10 parts by weight or more, and preferably 30 parts by weight or less, more preferably 25 parts by weight or less.

[0149] (vinyl chloride resin molded body)

[0150] The vinyl chloride resin molded article of the present invention can be obtained by molding the above-described vinyl chloride resin composition of the present invention by any method. Preferably, the vinyl chloride resin molded article of the present invention is obtained by powder molding of the above-described vinyl chloride resin composition of the present invention, and more preferably by powder slush molding.

[0151] Furthermore, the vinyl chloride resin molded articles of the present invention can be preferably used as automotive interior materials such as the exterior of automotive dashboards.

[0152] Here, when forming a vinyl chloride resin molded body by powder slush molding, there is no particular limitation on the temperature of the metal mold during powder slush molding, but it is preferably 200°C or higher, more preferably 220°C or higher, and preferably 300°C or lower, more preferably 280°C or lower.

[0153] Furthermore, there are no particular limitations in the manufacturing process of the vinyl chloride resin molded body, and methods such as the following can be used: The vinyl chloride resin composition of the present invention is sprinkled into a metal mold within the aforementioned temperature range, left for 5 seconds to 30 seconds, then the remaining vinyl chloride resin composition is shaken off, and further left at any temperature for 30 seconds to 3 minutes. Subsequently, the metal mold is cooled to 10°C to 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 the shape of the metal mold is obtained.

[0154] (Layered structure)

[0155] The laminate of the present invention comprises a foamed polyurethane molded body and the aforementioned vinyl chloride resin molded body. Furthermore, the vinyl chloride resin molded body typically forms one surface of the laminate.

[0156] Moreover, the laminate of the present invention is preferably used as an automotive interior material for forming automotive interior parts, particularly automotive dashboards.

[0157] Here, the method of laminating the polyurethane foam and the vinyl chloride resin molded body is not particularly limited, and the following methods can be used, for example: (1) preparing the polyurethane foam and the vinyl chloride resin molded body separately, and then bonding them by using heat fusion, heat bonding or known adhesives; (2) reacting isocyanates and polyols, which are the raw materials of the polyurethane foam, with the vinyl chloride resin molded body, polymerizing them, and foaming the polyurethane by a known method, thereby directly forming the polyurethane foam on the vinyl chloride resin molded body. From the perspective of simplifying the process and being able to easily and firmly bond the vinyl chloride resin molded body and the polyurethane foam even when obtaining laminates of various shapes, the latter method (2) is particularly preferred.

[0158] Example

[0159] The present invention will be specifically described below based on embodiments, but the present invention is not limited to these embodiments. Furthermore, in the following description, unless otherwise specified, "%" and "parts" refer to quantities based on mass.

[0160] The powder flowability of vinyl chloride resin compositions and powder compositions, as well as the tensile elongation and tensile stress of vinyl chloride resin molded articles at low temperatures, are determined or evaluated by the following methods.

[0161] <Powder Flowability>

[0162] For the powder composition obtained in the manufacturing example and the vinyl chloride resin composition obtained in the examples, the bulk density was determined based on the weight placed in a 100 mL container using a bulk density measuring device as described in JIS-K-6720. The powder composition or vinyl chloride resin composition obtained at this time, placed in a 100 mL container, was then returned to the bulk density measuring device, and the time from opening the baffle to the complete flow of the powder was measured, obtaining the fall time in seconds. It should be noted that cases where the powder did not flow completely even after waiting for 1 minute were recorded as "not flowing". All the above operations were performed at room temperature (23°C). It should be noted that the shorter the fall time, the better the powder flowability of the powder composition or vinyl chloride resin composition at room temperature.

[0163] Tensile Test

[0164] The tensile properties of the vinyl chloride resin molded articles obtained in the Examples and Comparative Examples at low temperatures were evaluated by measuring the elongation (%) and tensile stress (MPa) as described below.

[0165] The obtained vinyl chloride resin molded body (sheet) was punched using a No. 1 dumbbell cutter as described in JIS K6251. According to JIS K7113, the tensile elongation (%) and tensile stress (MPa) at -25°C were measured at a stretching speed of 200 mm / min. A higher tensile elongation value indicates better ductility of the initial (unheated) vinyl chloride resin molded body.

[0166] (Manufacturing Example 1: Manufacturing of raw material vinyl chloride resin composition (virgin material) A)

[0167] All components of the formulation shown in Table 1, except for the plasticizers (trimethoate and epoxidized soybean oil) and vinyl chloride resin particles A as a separating agent, were added to a Henschel mixer and mixed. Then, when the mixture temperature reached 80°C, all of the aforementioned plasticizer was added, allowing it to dry completely (meaning the plasticizer was absorbed by the vinyl chloride resin particles, resulting in a dry mixture). Subsequently, when the dried mixture cooled to below 70°C, vinyl chloride resin particles A as a separating agent were added to prepare the raw material vinyl chloride resin composition (virgin material) A.

[0168] (Manufacturing Example 2: Manufacturing of raw material vinyl chloride resin composition (virgin material) B)

[0169] In Manufacturing Example 1, adipate polyester (manufactured by Adico Co., Ltd., product name "HPN-3130") was used as a plasticizer instead of trimellitate. Otherwise, the same procedure as in Manufacturing Example 2 was followed to prepare raw material vinyl chloride resin composition (virgin material) B.

[0170] (Manufacturing Example 3: Manufacturing of Powder Composition A)

[0171] The vinyl chloride resin composition A obtained in Manufacturing Example 1 was sprinkled into a textured metal mold heated to 250°C. After melting for an arbitrary period of time, the remaining vinyl chloride resin composition was shaken off. The textured metal mold containing the vinyl chloride resin composition was then placed in an oven set to 200°C. After 60 seconds of cooling, the mold was cooled with cooling water. When the temperature of the metal mold cooled to 40°C, a 150mm × 200mm × 1mm vinyl chloride resin sheet was demolded from the metal mold as a vinyl chloride resin skin material.

[0172] Next, the vinyl chloride resin molding sheet was cut into coarse powder of about 5 mm square using a sheet granulator. Then, the coarse powder was pulverized by cryogenic pulverization at -90°C to obtain micro-pulverized material (powder for vinyl chloride resin skin material) as powder composition A with a volume average particle size of 110 μm.

[0173] An attempt was made to determine the falling time of powder composition A, but it could not be determined because it did not flow.

[0174] (Manufacturing Example 4: Manufacturing of Powder Composition B)

[0175] The vinyl chloride resin composition A obtained in Manufacturing Example 1 was sprinkled into a textured metal mold heated to 250°C. After melting for an arbitrary period of time, the remaining vinyl chloride resin composition was shaken off. The textured metal mold containing the vinyl chloride resin composition was then placed in an oven set to 200°C. After 60 seconds of cooling, the mold was cooled with cooling water. When the temperature of the metal mold cooled to 40°C, a 150mm × 200mm × 1mm vinyl chloride resin sheet was demolded from the metal mold as a vinyl chloride resin skin material.

[0176] Next, the vinyl chloride resin molding sheet was cut into coarse powder pieces of about 5 mm square using a sheet granulator. Then, the coarse powder pieces were pulverized by cryogenic pulverization at -90°C to obtain micro-powdered material (powder for vinyl chloride resin skin material) with a volume average particle size of 110 μm.

[0177] The obtained micronized material was heated to 100°C in an oven. Then, using a cooling mixer at an addition temperature of 90°C (temperature of the micronized material), 5 parts of vinyl chloride resin microparticles B (manufactured by Shin-Daiichi Vinyl Chloride Co., Ltd., product name "ZEST PQLTX", prepared by emulsion polymerization, average degree of polymerization: 800, average particle size: 1.8 μm) as a separating agent were added and mixed to prepare a powder composition B containing vinyl chloride resin microparticles B.

[0178] Then, the fall time and bulk density of powder composition B were measured. The results are shown in Table 2.

[0179] (Manufacturing Example 5: Manufacturing of Powder Composition C)

[0180] In Manufacturing Example 3, the amount of vinyl chloride resin microparticles B (manufactured by Shin-Daiichi Vinyl Chloride Co., Ltd., product name "ZEST PQLTX") used as a separating agent was changed from 5 parts to 10 parts. Otherwise, the same procedure as in Manufacturing Example 3 was followed to manufacture powder composition C and perform various measurements. The results are shown in Table 2.

[0181] (Manufacturing Example 6: Manufacturing of Powder Composition D)

[0182] In Manufacturing Example 3, the amount of vinyl chloride resin microparticles B (manufactured by Shin-Daiichi Vinyl Chloride Co., Ltd., product name "ZEST PQLTX") used as a separating agent was changed from 5 parts to 15 parts. Otherwise, the same procedure as in Manufacturing Example 3 was followed to manufacture powder composition D and perform various measurements. The results are shown in Table 2.

[0183] (Manufacturing Example 7: Manufacturing of Powder Composition E)

[0184] In Manufacturing Example 3, the amount of vinyl chloride resin microparticles B (manufactured by Shin-Daiichi Vinyl Chloride Co., Ltd., product name "ZEST PQLTX") used as a separating agent was changed from 5 parts to 30 parts. Otherwise, the same procedure as in Manufacturing Example 3 was followed to manufacture powder composition E and perform various measurements. The results are shown in Table 2.

[0185] (Manufacturing Example 8: Manufacturing of Powder Composition F)

[0186] In Manufacturing Example 3, the raw material vinyl chloride resin composition B manufactured in Manufacturing Example 2 was used instead of the raw material vinyl chloride resin composition A manufactured in Manufacturing Example 1. The amount of vinyl chloride resin microparticles B (manufactured by Shin-Daiichi Vinyl Chloride Co., Ltd., product name "ZEST PQLTX") used as a separating agent was changed from 5 parts to 10 parts. Otherwise, the same procedure as in Manufacturing Example 3 was followed to manufacture powder composition F and perform various measurements. The results are shown in Table 2.

[0187] (Manufacturing Example 9: Manufacturing of Powder Composition G)

[0188] In Manufacturing Example 3, the raw material vinyl chloride resin composition B manufactured in Manufacturing Example 2 was used instead of the raw material vinyl chloride resin composition A manufactured in Manufacturing Example 1. The amount of vinyl chloride resin microparticles B (manufactured by Shin-Daiichi Vinyl Chloride Co., Ltd., product name "ZEST PQLTX") used as a separating agent was changed from 5 parts to 15 parts. Otherwise, the same procedure as in Manufacturing Example 3 was followed to manufacture powder composition G and perform various measurements. The results are shown in Table 2.

[0189] (Manufacturing Example 10: Manufacturing of Powder Composition H)

[0190] In Manufacturing Example 3, the raw material vinyl chloride resin composition B manufactured in Manufacturing Example 2 was used instead of the raw material vinyl chloride resin composition A manufactured in Manufacturing Example 1. The amount of vinyl chloride resin microparticles B (manufactured by Shin-Daiichi Vinyl Chloride Co., Ltd., product name "ZEST PQLTX") used as a separating agent was changed from 5 parts to 30 parts. Otherwise, the same procedure as in Manufacturing Example 3 was followed to manufacture powder composition H and perform various measurements. The results are shown in Table 2.

[0191] (Example 1)

[0192] <Preparation of Vinyl Chloride Resin Compositions>

[0193] Using a cooling mixer, 5 parts of powder composition A manufactured in Manufacturing Example 3 were added to and mixed with 95 parts of raw material vinyl chloride resin composition A manufactured in Manufacturing Example 1 at room temperature, thereby manufacturing a vinyl chloride resin composition.

[0194] Then, the fall time and bulk density of the vinyl chloride resin composition were measured. The results are shown in Table 3.

[0195] <Formation of Vinyl Chloride Resin Molded Components>

[0196] The obtained vinyl chloride resin composition was sprinkled into a textured metal mold heated to 250°C. After melting for an arbitrary period of time, the remaining vinyl chloride resin composition was shaken off. The textured metal mold containing the vinyl chloride resin composition was then placed in an oven set to 200°C. After 60 seconds of cooling, the mold was cooled with cooling water. When the temperature of the metal mold cooled to 40°C, it was demolded from the metal mold to obtain a 150mm × 180mm × 1mm vinyl chloride resin molded sheet.

[0197] The resulting vinyl chloride resin molded articles were then used to evaluate the elongation at low temperatures and the tensile stress. The results are shown in Table 3.

[0198] (Example 2)

[0199] In Example 1, 95 parts of the raw material vinyl chloride resin composition A manufactured in Example 1 were added to and mixed with 5 parts of the powder composition B manufactured in Example 4 at room temperature to produce a vinyl chloride resin composition. Otherwise, the process was the same as in Example 1 to produce the vinyl chloride resin composition and the vinyl chloride resin molded article, and various measurements and evaluations were performed. The results are shown in Table 3.

[0200] (Example 3)

[0201] In Example 1, 95 parts of the raw material vinyl chloride resin composition A manufactured in Manufacturing Example 1 were added to and mixed with 5 parts of the powder composition C manufactured in Manufacturing Example 5 at room temperature to produce a vinyl chloride resin composition. Otherwise, the process was the same as in Example 1 to produce the vinyl chloride resin composition and the vinyl chloride resin molded article, and various measurements and evaluations were performed. The results are shown in Table 3.

[0202] (Example 4)

[0203] In Example 1, 90 parts of the raw material vinyl chloride resin composition A manufactured in Manufacturing Example 1 were added to and mixed with 10 parts of the powder composition C manufactured in Manufacturing Example 5 at room temperature to produce a vinyl chloride resin composition. Otherwise, the process was the same as in Example 1 to produce the vinyl chloride resin composition and the vinyl chloride resin molded article, and various measurements and evaluations were performed. The results are shown in Table 3.

[0204] (Example 5)

[0205] In Example 1, 20 parts of powder composition C manufactured in Example 5 were added to and mixed with 80 parts of the raw material vinyl chloride resin composition A manufactured in Example 1 at room temperature, thereby producing a vinyl chloride resin composition. Otherwise, the same procedure as in Example 1 was followed to produce the vinyl chloride resin composition and the vinyl chloride resin molded article, and various measurements and evaluations were performed. The results are shown in Table 3.

[0206] (Example 6)

[0207] In Example 1, 95 parts of the raw material vinyl chloride resin composition A manufactured in Manufacturing Example 1 were added to and mixed with 5 parts of the powder composition D manufactured in Manufacturing Example 6 at room temperature to produce a vinyl chloride resin composition. Otherwise, the process was the same as in Example 1 to produce the vinyl chloride resin composition and the vinyl chloride resin molded article, and various measurements and evaluations were performed. The results are shown in Table 3.

[0208] (Example 7)

[0209] In Example 1, 90 parts of the raw material vinyl chloride resin composition A manufactured in Manufacturing Example 1 were added to and mixed with 10 parts of the powder composition D manufactured in Manufacturing Example 6 at room temperature to produce a vinyl chloride resin composition. Otherwise, the process was the same as in Example 1 to produce the vinyl chloride resin composition and the vinyl chloride resin molded article, and various measurements and evaluations were performed. The results are shown in Table 3.

[0210] (Example 8)

[0211] In Example 1, 20 parts of powder composition D manufactured in Example 6 were added to and mixed with 80 parts of the raw material vinyl chloride resin composition A manufactured in Example 1 at room temperature, thereby manufacturing a vinyl chloride resin composition. Otherwise, the process was the same as in Example 1 to manufacture the vinyl chloride resin composition and the vinyl chloride resin molded article, and various measurements and evaluations were performed. The results are shown in Table 3.

[0212] (Example 9)

[0213] In Example 1, 95 parts of the raw material vinyl chloride resin composition A manufactured in Manufacturing Example 1 were added to and mixed with 5 parts of the powder composition E manufactured in Manufacturing Example 7 at room temperature to produce a vinyl chloride resin composition. Otherwise, the process was the same as in Example 1 to produce the vinyl chloride resin composition and the vinyl chloride resin molded article, and various measurements and evaluations were performed. The results are shown in Table 3.

[0214] (Example 10)

[0215] In Example 1, 90 parts of the raw material vinyl chloride resin composition A manufactured in Manufacturing Example 1 were added to and mixed with 10 parts of the powder composition E manufactured in Manufacturing Example 7 at room temperature to produce a vinyl chloride resin composition. Otherwise, the process was the same as in Example 1 to produce the vinyl chloride resin composition and the vinyl chloride resin molded article, and various measurements and evaluations were performed. The results are shown in Table 3.

[0216] (Example 11)

[0217] In Example 1, 20 parts of powder composition E manufactured in Example 7 were added to and mixed with 80 parts of the raw material vinyl chloride resin composition A manufactured in Example 1 at room temperature, thereby manufacturing a vinyl chloride resin composition. Otherwise, the same procedure as in Example 1 was followed to manufacture the vinyl chloride resin composition and the vinyl chloride resin molded article, and various measurements and evaluations were performed. The results are shown in Table 3.

[0218] (Example 12)

[0219] In Example 1, 95 parts of the raw material vinyl chloride resin composition B manufactured in Manufacturing Example 2 and 5 parts of the powder composition F manufactured in Manufacturing Example 8 were used instead of 95 parts of the raw material vinyl chloride resin composition A manufactured in Manufacturing Example 1 and the powder composition A manufactured in Manufacturing Example 3, respectively, to manufacture a vinyl chloride resin composition. Otherwise, the process was the same as in Example 1 to manufacture the vinyl chloride resin composition and the vinyl chloride resin molded article, and various measurements and evaluations were performed. The results are shown in Table 4.

[0220] (Example 13)

[0221] In Example 12, the amount of the raw material vinyl chloride resin composition B manufactured in Manufacturing Example 2 was changed to 90 parts, and the amount of the powder composition F manufactured in Manufacturing Example 8 was changed to 10 parts to manufacture the vinyl chloride resin composition. Otherwise, the process was the same as in Example 12, and the vinyl chloride resin composition and the vinyl chloride resin molded article were manufactured. Various measurements and evaluations were performed. The results are shown in Table 4.

[0222] (Example 14)

[0223] In Example 12, the amount of the raw material vinyl chloride resin composition B manufactured in Manufacturing Example 2 was changed to 80 parts, and the amount of the powder composition F manufactured in Manufacturing Example 8 was changed to 20 parts to manufacture a vinyl chloride resin composition. Otherwise, the process was the same as in Example 12, and the vinyl chloride resin composition and vinyl chloride resin molded articles were manufactured, and various measurements and evaluations were performed. The results are shown in Table 4.

[0224] (Example 15)

[0225] In Example 1, 95 parts of the raw material vinyl chloride resin composition B manufactured in Manufacturing Example 2 and 5 parts of the powder composition G manufactured in Manufacturing Example 9 were used instead of 95 parts of the raw material vinyl chloride resin composition A manufactured in Manufacturing Example 1 and the powder composition A manufactured in Manufacturing Example 3, respectively, to manufacture a vinyl chloride resin composition. Otherwise, the process was the same as in Example 1, and the vinyl chloride resin composition and vinyl chloride resin molded article were manufactured, and various measurements and evaluations were performed. The results are shown in Table 4.

[0226] (Example 16)

[0227] In Example 15, the amount of the raw material vinyl chloride resin composition B manufactured in Manufacturing Example 2 was changed to 90 parts, and the amount of the powder composition G manufactured in Manufacturing Example 9 was changed to 10 parts to manufacture a vinyl chloride resin composition. Otherwise, the process was the same as in Example 15, and the vinyl chloride resin composition and vinyl chloride resin molded articles were manufactured, and various measurements and evaluations were performed. The results are shown in Table 4.

[0228] (Example 17)

[0229] In Example 15, the amount of the raw material vinyl chloride resin composition B manufactured in Manufacturing Example 2 was changed to 80 parts, and the amount of the powder composition G manufactured in Manufacturing Example 9 was changed to 20 parts to manufacture a vinyl chloride resin composition. Otherwise, the process was the same as in Example 15, and the vinyl chloride resin composition and vinyl chloride resin molded articles were manufactured, and various measurements and evaluations were performed. The results are shown in Table 4.

[0230] (Example 18)

[0231] In Example 1, 95 parts of the raw material vinyl chloride resin composition B manufactured in Manufacturing Example 2 and 5 parts of the powder composition H manufactured in Manufacturing Example 10 were used instead of 95 parts of the raw material vinyl chloride resin composition A manufactured in Manufacturing Example 1 and the powder composition A manufactured in Manufacturing Example 3, respectively, to manufacture a vinyl chloride resin composition. Otherwise, the process was the same as in Example 1 to manufacture the vinyl chloride resin composition and the vinyl chloride resin molded article, and various measurements and evaluations were performed. The results are shown in Table 4.

[0232] (Example 19)

[0233] In Example 18, the amount of the raw material vinyl chloride resin composition B manufactured in Manufacturing Example 2 was changed to 90 parts, and the amount of the powder composition H manufactured in Manufacturing Example 10 was changed to 10 parts to manufacture a vinyl chloride resin composition. Otherwise, the process was the same as in Example 18, and the vinyl chloride resin composition and vinyl chloride resin molded articles were manufactured, and various measurements and evaluations were performed. The results are shown in Table 4.

[0234] (Example 20)

[0235] In Example 18, the amount of the raw material vinyl chloride resin composition B manufactured in Manufacturing Example 2 was changed to 80 parts, and the amount of the powder composition H manufactured in Manufacturing Example 10 was changed to 20 parts to manufacture a vinyl chloride resin composition. Otherwise, the process was the same as in Example 18, and the vinyl chloride resin composition and vinyl chloride resin molded articles were manufactured, and various measurements and evaluations were performed. The results are shown in Table 4.

[0236] (Comparative Example 1)

[0237] In Example 1, without the use of a powder composition, the raw material vinyl chloride resin composition (virgin material) A manufactured in Manufacturing Example 1 was used directly as the vinyl chloride resin composition. Otherwise, the process was the same as in Example 1, producing a vinyl chloride resin molded article and performing various measurements and evaluations. The results are shown in Table 3. The bulk density and fall time of the raw material vinyl chloride resin composition A are also shown in Table 3.

[0238] (Comparative Example 2)

[0239] In Example 1, without the use of a powder composition, the raw material vinyl chloride resin composition (virgin material) B manufactured in Manufacturing Example 2 was used directly as the vinyl chloride resin composition. Otherwise, the process was the same as in Example 1, producing a vinyl chloride resin molded article and performing various measurements and evaluations. The results are shown in Table 4. The bulk density and fall time of the raw material vinyl chloride resin composition B are also shown in Table 4.

[0240] [Table 1]

[0241]

[0242] [Table 2]

[0243]

[0244] [Table 3]

[0245]

[0246] [Table 4]

[0247]

[0248] 1) Manufactured by Shinichi Chloride Co., Ltd., product name "ZEST (registered trademark) 1700ZI" (prepared by suspension polymerization, average degree of polymerization: 1700, average particle size: 130μm).

[0249] 2) Manufactured by Shinichi Chloride Co., Ltd., product name "ZEST PQLTX" (prepared by emulsion polymerization, average degree of polymerization: 800, average particle size: 1.8μm).

[0250] 3) Manufactured by Kao Corporation, product name "Trimex N-08"

[0251] 4) Manufactured by Adico Co., Ltd., product name "HPN-3130"

[0252] 5) Manufactured by Adicon Co., Ltd., product name "ADK CIZER O-130S"

[0253] 6) Manufactured by Kyowa Chemical Industry Co., Ltd., product name "ALCAMAIZER (registered trademark) 5"

[0254] 7) Manufactured by Mizusawa Chemical Industry Co., Ltd., product name "MIZUKALIZER DS"

[0255] 8) Manufactured by Showa Denko Co., Ltd., product name "KARENZ DK-1"

[0256] 9) Manufactured by Sakai Chemical Industry Co., Ltd., product name "SAKAI SZ2000"

[0257] 10) Manufactured by Adico Co., Ltd., product name "LA-72"

[0258] 11) Manufactured by ADK STAB Co., Ltd., product name "ADK STAB LS-12"

[0259] 12) Manufactured by Dainippon Seika Co., Ltd., product name "DA P 4720 Black"

[0260] 13) Made by Shinichi Chloride Co., Ltd., product name "ZEST PQLTX" (prepared by emulsion polymerization, average degree of polymerization: 800, average particle size: 1.8μm)

[0261] According to the results shown in Tables 3 and 4, even when the vinyl chloride resin compositions of Examples 1 to 19 containing vinyl chloride resin microparticles contain powders with vinyl chloride resin skin material, their fall time is equal to or lower than that of the raw material vinyl chloride resin compositions (virgin materials) of Comparative Examples 1 and 2 without vinyl chloride resin skin material, thus suppressing the reduction of powder flowability.

[0262] Industrial availability

[0263] According to the present invention, a vinyl chloride resin composition and a method thereof are provided that can suppress the reduction of powder flowability even when the micro-pulverized material containing vinyl chloride resin skin material is pulverized.

[0264] Furthermore, according to the present invention, it is possible to provide a vinyl chloride resin molded body formed by molding the above-described vinyl chloride resin composition.

[0265] Furthermore, according to the present invention, it is possible to provide a laminate having the above-described vinyl chloride resin molded body.

Claims

1. A vinyl chloride resin composition comprising: (a) Vinyl chloride resin particles; (b) Vinyl chloride resin particles A; (c) Plasticizers; and (d) A powder composition containing a powder of vinyl chloride resin as a skin material.

2. The vinyl chloride resin composition according to claim 1, wherein, The amount of the vinyl chloride resin skin material powder is more than 1 part by weight and less than 40 parts by weight relative to 100 parts by weight of the vinyl chloride resin composition.

3. The vinyl chloride resin composition according to claim 1, wherein, The volume average particle size of the vinyl chloride resin skin material powder is greater than 50 μm and less than 500 μm.

4. The vinyl chloride resin composition according to claim 1, wherein, The powder composition also contains (b-1) vinyl chloride resin particles B.

5. The vinyl chloride resin composition according to claim 1, wherein, The total amount of vinyl chloride resin particles is 3 parts by weight or more and 40 parts by weight or less relative to 100 parts by weight of the vinyl chloride resin skin material powder.

6. The vinyl chloride resin composition according to claim 1, wherein, The total amount of all vinyl chloride resin particles is 15 parts by mass and less than 35 parts by mass relative to a total of 100 parts by mass of the vinyl chloride resin particles and the vinyl chloride resin skin material powder.

7. The vinyl chloride resin composition according to claim 4, wherein, The content of the (b-1)vinyl chloride resin particles B in the powder composition is more than 2.0% by mass and less than 25% by mass.

8. The vinyl chloride resin composition according to claim 4, wherein, The falling time of the powder composition is less than 35 seconds.

9. The vinyl chloride resin composition according to claim 1, wherein, The vinyl chloride resin composition comprises the powder composition in a proportion of 3 or more and 30 or less of the (a) vinyl chloride resin particles relative to 100 parts by weight.

10. The vinyl chloride resin composition according to claim 1, wherein, The plasticizer (c) comprises at least one of trimellitate and polyester.

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

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

13. A method for manufacturing a vinyl chloride resin composition, comprising the following steps: The process of preparing a raw material vinyl chloride resin composition comprising (a) vinyl chloride resin particles, (b) vinyl chloride resin microparticles A and (c) a plasticizer; The process of preparing a powder composition containing a powder for making a skin material from vinyl chloride resin; and The process of adding and mixing the powder composition to the raw material vinyl chloride resin composition.

14. The method for manufacturing the vinyl chloride resin composition according to claim 13, wherein, The process of preparing a powder composition containing a powder of vinyl chloride resin skin material includes the process of adding and mixing (b-1) vinyl chloride resin particles B into the powder of the vinyl chloride resin skin material.

15. A vinyl chloride resin molded article, which is formed by molding the vinyl chloride resin composition according to any one of claims 1 to 12.

16. The vinyl chloride resin molded article according to claim 15, wherein, The vinyl chloride resin molded body is used for automotive dashboard skin.

17. A laminate comprising a foamed polyurethane molded body and a vinyl chloride resin molded body as claimed in claim 15.

18. The laminate according to claim 17, wherein, The laminated body is used for automotive dashboards.

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