JPWO2008018521A1 - Vinyl chloride resin composition and molded body - Google Patents

Abstract

An object of the present invention is to provide a transparent vinyl chloride resin composition having not only excellent transparency and flame retardancy but also thermal stability and slipperiness necessary to ensure high productivity, and a molded article obtained therefrom. As follows: 1 to 50 parts by mass of a chlorine-containing resin having a high-temperature decomposition promoting function, 0.1 to 7 parts by mass of an organic compound having a high-temperature decomposition inhibiting function, and heat having a low-temperature decomposition suppressing function with respect to 100 parts by mass of the vinyl chloride resin A vinyl chloride resin composition characterized by containing 1 to 10 parts by mass of a stabilizer (including a heat stabilization aid) and a molded product thereof are proposed.

Description

  The present invention relates to a vinyl chloride resin composition capable of forming a transparent molded article having flame retardancy, and a molded article obtained by molding this composition.

  Vinyl chloride resin contains chlorine in the molecule and is not only excellent in flame retardancy, but also various additives can be added in a wide content, so mechanical properties, heat resistance, moldability, weather resistance Etc. can be adjusted over a wide range and has been used in various applications. For example, molded products of rigid vinyl chloride resin compositions include: interior / exterior materials for transport aircraft such as aircraft, ships, vehicles, etc .; interior / exterior materials for buildings; daily necessaries such as furniture and office equipment; housing materials for home appliances and electronic devices; It has been used as a part of equipment.

  However, when the vinyl chloride resin is exposed to a temperature higher than the heat-resistant temperature due to a fire or the like, a large amount of smoke is generated due to chlorine in the molecule and a toxic gas such as chlorine gas or hydrogen chloride gas is generated. For this reason, attempts have been made to suppress the generation of toxic gases by examining the types and amounts of additives.

For example, in Patent Document 1, for the purpose of a transparent vinyl chloride resin that satisfies the FM standard, 0.005 to 5 parts by weight of a zinc compound in terms of a metal zinc amount with respect to 100 parts by weight of a vinyl chloride resin, A transparent flame retardant vinyl chloride resin molded article containing 0.5 to 7 parts by weight of a tin stabilizer and molded into a desired shape is disclosed.
However, with this disclosed technology, sufficient flame retardancy cannot be secured, and depending on the processing conditions, there is a possibility of poor appearance such as poorly dispersed burn derived from the zinc compound of the powder, and inferior lubricity and thermal stability. Since the moldability was poor, an improvement was desired.

Patent Document 2 discloses that a transparent vinyl chloride resin molded body having flame retardancy is laminated with a vinyl chloride layer having a low chlorination degree and a vinyl chloride layer having a high chlorination degree. A transparent flame-retardant vinyl chloride resin molded product having a degree of conversion of 60% or more and formed into a desired shape is disclosed.
However, in this disclosed technique, since resins having different compositions are laminated, a difference in refractive index is generated at the resin interface, and it is difficult to obtain high transparency, and the process becomes complicated and productivity does not increase. When a single layer is used to increase productivity, not only the flame retardancy becomes insufficient, but also it is difficult to ensure sufficient transparency.

Furthermore, Patent Document 3 discloses that in a vinyl chloride resin composition containing an organotin stabilizer, 0.01 to 1 part by mass of an organic zinc compound as a high-temperature decomposition accelerator is used for 100 parts by mass of a vinyl chloride resin. A vinyl chloride resin composition characterized by having 0.001 to 1 part by mass of a metal hydroxide as an inhibitor and a molded product obtained therefrom are disclosed.
In this disclosure, excellent transparency and flame retardancy can be secured, but in addition to further improvement in transparency and flame retardancy, improvement in workability is expected.

  As described above, it has been difficult for conventional vinyl chloride resin moldings to satisfy high productivity as well as high transparency and flame retardancy.

JP 2001-192520 A JP 2005-15620 A JP 2004-3000299 A

  The present invention provides a vinyl chloride resin composition having excellent transparency, flame retardancy, thermal stability and lubricity necessary to ensure high productivity, and a molded article obtained therefrom. For the purpose.

  For this purpose, the present inventor made 1 to 50 parts by mass of a chlorine-containing resin having a high-temperature decomposition promoting function and 0.1 to 7 parts by mass of an organic compound having a high-temperature decomposition inhibiting function with respect to 100 parts by mass of the vinyl chloride resin. The present invention proposes a vinyl chloride resin composition comprising 1 to 10 parts by mass of a thermal stabilizer (including a thermal stabilization aid) having a low-temperature decomposition inhibiting function and a molded product thereof.

  According to the vinyl chloride resin composition of the present invention, flame retardancy is achieved by the synergistic effect of the decomposition promoting function of the chlorine-containing resin having the high temperature decomposition promoting function and the decomposition inhibiting function of the organic compound having the high temperature decomposition inhibiting function. Not only is it excellent, it can maintain the high transparency inherent in vinyl chloride resin at the same level, and it also has excellent thermal stability and lubricity necessary to ensure high productivity. It will be a thing. The molded article of the present invention obtained by extrusion molding, calendar press molding or extrusion continuous press molding of such a vinyl chloride resin composition is excellent in transparency and flame retardancy and molded with high productivity. It will have thermal stability that can be.

  Hereinafter, a vinyl chloride resin composition (hereinafter referred to as “the present vinyl chloride resin composition”) as an example of an embodiment of the present invention, and a molded article obtained by molding the present vinyl chloride resin composition (hereinafter referred to as “the present vinyl chloride resin composition”). (Referred to as “main molded body”). However, the scope of the present invention is not limited to the embodiments described below.

  The vinyl chloride resin composition contains a high temperature decomposition accelerator, a low temperature decomposition inhibitor, and a high temperature decomposition inhibitor in addition to the vinyl chloride resin as a base resin. It is.

Here, the high temperature decomposition accelerator is a substance having a function of promoting the decomposition of the vinyl chloride resin in a high temperature region, and the high temperature decomposition inhibitor has a function of inhibiting the decomposition of the vinyl chloride resin in a high temperature region. The low-temperature decomposition inhibitor is a substance having a function of suppressing the decomposition of the vinyl chloride resin in a low-temperature region.
Regarding the decomposition behavior of the vinyl chloride resin, the dehydrochlorination behavior starts at the processing temperature range of 220 ° C, and the dehydrochlorination behavior is prominent between 220 ° C and 370 ° C. is there. In a temperature range higher than that, for example, 450 ° C. or higher, the main chain of the vinyl chloride resin is decomposed, or carbon or carbonization of the vinyl chloride resin occurs. Therefore, in the present invention, the decomposition in the low temperature region refers to the decomposition behavior in the temperature region up to 220 ° C. which is the molding processing temperature region, and the decomposition in the high temperature region means that the main chain is broken and carbon combustion occurs 450. The decomposition behavior in the temperature range above ℃.
Further, the high temperature decomposition promoting function in the present invention means that the vinyl chloride resin is decomposed by breaking the main chain of the vinyl chloride resin at 450 ° C. or higher, or carbonized by the combustion of carbon in the vinyl chloride resin. It can be said that it is a function that promotes being done. Moreover, it can be said that the high temperature decomposition inhibiting function in the present invention is a function of inhibiting the decomposition and carbonization of the vinyl chloride resin at 450 ° C. or higher. Furthermore, it can be said that the low-temperature decomposition suppressing function in the present invention is a function of suppressing the start of dehydrochlorination behavior from a vinyl chloride resin at less than 220 ° C.

(Vinyl chloride resin)
Examples of the vinyl chloride resin that can be used as a base resin in the vinyl chloride resin composition include vinyl chloride homopolymers and copolymers of vinyl chloride and other vinyl compounds. It can be used alone or as a mixed resin of these two kinds.

  In the above copolymer, other vinyl compounds that can be copolymerized with the vinyl chloride component are not particularly limited. For example, fatty acid vinyl esters such as vinyl acetate and vinyl propionate; alkyl methacrylates such as methyl methacrylate, ethyl methacrylate and butyl methacrylate; alkyl acrylates such as methyl acrylate, ethyl acrylate and butyl acrylate; ethylene And α-olefins such as propylene and styrene; alkyl vinyl ethers such as vinyl methyl ether and vinyl butyl ether; unsaturated carboxylic acids such as acrylic acid, methacrylic acid, and maleic anhydride, or acid anhydrides thereof. Can be used alone or in combination of two or more.

  In the above copolymer, if the copolymerization amount of the other vinyl compound does not exceed 30% by mass, the inherent flame retardancy and high transparency of the vinyl chloride resin are not impaired. It is preferable to contain in the range which does not exceed 30 mass%. The amount of copolymerization is preferably 20% by mass and more preferably 10% by mass from the viewpoints of transparency and flame retardancy.

  The average degree of polymerization of the vinyl chloride resin is preferably 300 to 2,000, and more preferably 500 to 1,500. If the average degree of polymerization is too small, the molded product may not have sufficient strength, and if it is too large, it is difficult to knead sufficiently during molding and the processability may be reduced.

  The polymerization method of the vinyl chloride resin is not particularly limited, and a polymer obtained by polymerization using various methods such as an emulsion polymerization method, a suspension polymerization method, and a bulk polymerization method can be used.

(High temperature decomposition accelerator)
The high-temperature decomposition accelerator plays a role of promoting the cutting and carbonization of the main chain of the vinyl chloride resin and reducing the amount of smoke generated when the molded body is burned in a high-temperature region (for example, 450 ° C. or higher).

As the high-temperature decomposition accelerator, a chlorine-containing resin capable of generating hydrogen chloride, which has an action of promoting the cleavage behavior of the main chain of the vinyl chloride resin, is preferable.
As the chlorine-containing resin having a function of promoting high-temperature decomposition, chlorinated polyethylene resin, post-chlorinated vinyl chloride resin, vinylidene chloride resin and the like can be mentioned as particularly preferable ones.

  The chlorinated polyethylene is a resin obtained by chlorinating polyethylene having a mass average molecular weight of 50,000 to 350,000, and has a chlorine content of 28 to 43% by mass and a heat of crystal melting by DSC method of 25 cal / g or less. A certain chlorinated polyethylene etc. can be illustrated. Among them, from the viewpoint of transparency, a resin obtained by chlorinating polyethylene having a mass average molecular weight of 50,000 to 150,000, having a chlorine content of 28 to 35% by mass and a crystal melting heat by DSC method of 10 to 25 cal / g. A chlorinated polyethylene is preferred.

As the post-chlorinated vinyl chloride resin, those having an average degree of polymerization of the vinyl chloride resin before chlorination of 500 to 1400 are preferable. If the average degree of polymerization is less than 500, impact resistance may be lowered, and if it exceeds 1400, melt fluidity may be lowered and molding may be difficult.
The average chlorine content of the post-chlorinated vinyl chloride resin is 58 to 70% by mass, preferably 60 to 70% by mass. If the average chlorine content is too low, the heat resistance is lowered and deformation tends to occur. If the average chlorine content is too high, especially when it exceeds 70% by mass, the fluidity is greatly reduced and molding becomes difficult.

Examples of the vinylidene chloride resin include homopolymers and copolymers of vinylidene chloride. It is preferable to use a copolymer having a difference between the thermal decomposition temperature and the melting point, that is, a copolymer.
As the copolymer of vinylidene chloride, a copolymer obtained by copolymerizing vinylidene chloride and a known radical polymerizable monomer alone or in combination of two or more thereof can be used.
Examples of the radical polymerizable monomer include unsaturated fatty acids such as vinyl chloride, acrylonitrile, acrylic acid or methacrylic acid and esters thereof, vinyl esters such as vinyl acetate, vinyl ketones, olefins such as ethylene and propylene, n -Monomers containing special functional groups such as methylacrylamide and cyclohexylmaleimide.
The composition of the copolymer of vinylidene chloride and the monomer is not particularly limited, but in order to satisfy the flame retardancy, the content of vinylidene chloride is 65 to 99 mass%, preferably 80 to 97 mass%. Is preferably selected.
The molecular weight of the vinylidene chloride copolymer is not particularly limited, but a mass average molecular weight of 30,000 to 150,000, preferably 50,000 to 120,000 is preferable in terms of processability and physical properties of the molded article.
Examples of the polymerization method of the vinylidene chloride polymer include suspension polymerization, emulsion polymerization, bulk polymerization, gas phase polymerization, and the like. From the viewpoint of obtaining a good powder at low cost, suspension polymerization is particularly preferable.

  If the addition amount of the high-temperature decomposition accelerator is small, the flame retardancy is not improved because carbonization is not promoted at the time of combustion. On the other hand, if the addition amount is too large, the transparency is deteriorated or the hot water whitening resistance is deteriorated. Become. Therefore, the content of the high-temperature decomposition accelerator is preferably 1 to 50 parts by mass, more preferably 5 to 30 parts by mass, and particularly preferably 10 to 20 parts by mass with respect to 100 parts by mass of the vinyl chloride resin.

(Low-temperature decomposition inhibitor)
As the low-temperature decomposition inhibitor, it is preferable to select and use one having good transparency from those conventionally known as a heat stabilizer for vinyl chloride and a heat stabilization aid. For example, butyl tin malate, octyl tin malate, di-n alkyl tin mercaptide, di-n-alkyl tin dilaurate, dibutyl tin dimaleate, dibutyl tin lauryl mercaptide, dioctyl tin S, S'-bis- (isooctyl-mercaptoacetate) Tin stabilizers such as dibutyltin bis-isooctylthioglycolate, di- (n-octyl) tin malate polymer, dibutyltin mercaptopropionate, lead stabilizer, potassium, magnesium, barium, zinc, cadmium Metal soap stabilizers derived from metals such as lead and fatty acids such as 2-ethylhexanoic acid, lauric acid, myristic acid, palmitic acid, stearic acid, hydroxystearic acid, oleic acid, ricinoleic acid, behenic acid, Ba-Zn series, Ca-Zn series, Ba-Ca-Sn series, Composite metal soap stabilizers such as a-Mg-Sn, Ca-Zn-Sn, Pb-Ba and Pb-Ba-Ca, metal groups such as barium and zinc, 2-ethylhexanoic acid and isodecane Acids, branched fatty acids such as trialkylacetic acid, unsaturated fatty acids such as oleic acid, ricinoleic acid and linoleic acid, alicyclic acids such as naphthenic acid, aromatic acids such as carboxylic acid, benzoic acid, salicylic acid and substituted derivatives thereof. Metal salt stabilizers derived from usually two or more organic acids selected from the above, these stabilizers are dissolved in organic solvents such as petroleum hydrocarbons, alcohols, glycerin derivatives, and phosphites, epoxy Metal stabilizers such as compounds, color stabilizers, transparency improvers, light stabilizers, antioxidants, plate-out inhibitors, metal salt liquid stabilizers containing stabilizers such as lubricants, epoxy resins, Epoxy compounds such as epoxidized vegetable oils, epoxidized fatty acid alkyl esters, and epoxidized aromatic alkyl esters, phosphorus is substituted with alkyl groups, aryl groups, cycloacryl groups, alkoxyl groups, etc., and dihydric alcohols such as propylene glycol, hydroquinone , Organic phosphites having aromatic compounds such as bisphenol A, hindered amine or nickel complex light stabilizers, polymethyl alcohols such as trimethylolpropane, pentaerythritol, sorbitol, mannitol, β-aminocrotonates, 2- Nitrogen-containing compounds such as phenylindole, diphenylthiourea, dicyandiamide, sulfur-containing compounds such as dialkylthiodibropionate, keto compounds such as ethyl acetoacetate, dehydroacetic acid, β-diketone, organosilicon Preferred examples include non-metallic stabilizers such as compounds and borate esters. Those selected from these may be used alone or in combination of two or more.
Among these, organotin stabilizers, metal soap stabilizers, zeolites, hydrotalcites, aluminum-based, magnesium-based hydroxides are preferable, and among them, particularly from the viewpoint of excellent low-temperature decomposition inhibiting function and transparency. Tin stabilizers and metal soap stabilizers are particularly suitable.
Zeolite, hydrotalcites, aluminum hydroxide and magnesium hydroxide are used as heat stabilization aids.

  Examples of the tin stabilizer include a malate tin stabilizer, a laurate tin stabilizer, a mercapto tin stabilizer, and the like. Among these, a mercapto tin stabilizer advantageous in transparency is particularly preferable.

Examples of the metal soap stabilizer include metal soaps of saturated to unsaturated fatty acids having 10 to 22 carbon atoms, particularly 14 to 18 carbons, such as alkali metal salts such as sodium salts and potassium salts; calcium salts, magnesium salts and barium salts. Alkaline earth metal salts, zinc salts and the like can be mentioned, and among these, calcium salts, magnesium salts, barium salts and zinc salts are particularly suitable. These can be used alone or in combination of two or more.
Examples of fatty acids of metal soaps include saturated fatty acids such as capric acid, undecanoic acid, 2-ethylhexoic acid, lauric acid, myristic acid, palmitic acid, margaric acid, stearic acid, and arachidic acid, Mention may be made of unsaturated fatty acids such as oleic acid, linoleic acid, linolenic acid and arachidonic acid, and aromatic fatty acids such as benzoic acid and t-butyl-benzoic acid.
Above all, from the viewpoint of transparency, aromatic fatty acid zinc is preferable to fatty acid zinc if the number of carbon atoms is the same, and a shorter carbon number is more compatible with vinyl chloride resin and has higher transparency. It is preferable because it is easy to obtain. Therefore, t-butyl-benzoic acid and calcium, zinc salt of 2-ethylhexoic acid are particularly suitable.

  Examples of zeolites include, for example, synthetic zeolites such as zeolite A, zeolite X, and zeolite Y, partially or completely acid-treated products, or aluminosilicates of those metal ions (for example, calcium, magnesium, and zinc ions) exchanged products. Can do. Among these, sodium ion-exchanged A-type zeolite that has good thermal stability is particularly suitable.

Examples of hydrotalcites include those represented by the following formulas (1) to (4).
That is, Equation _{(1): Mg x Al y} (OH) 2x + 3y-2 CO 3 · aH 2 O ( wherein, x, y is a positive number that satisfies 1/4 ≦ x / y ≦ 8, a is Is a positive number satisfying 0.01 ≦ a / (x + y) ≦ 1.0),
Equation _{(2): Mg x Al y} (OH) 2x + 3y-2 · (Y n -) b · aH 2 O ( wherein, x, y is a positive number that satisfies 1/4 ≦ x / y ≦ 8 , N is an integer of 1 or more, b is a positive number satisfying O <b ≦ 2, b · n = 2, a is a positive number satisfying 0.01 ≦ a / (x + y) ≦ 1.0, Y is At least one integer molar unit selected from the group consisting of phosphorus oxyacid, sulfur oxyacid, nitrogen oxyacid, boron oxyacid, carbonic acid, halogen hydroacid, halogen oxygen acid, perhalogen oxygen acid, carboxylic acid Can be combined with a single or complex anion),
Equation _{(3): M x Al y} (OH) 2x + 3y-2z (Y) z · aH in ₂ O (wherein, x, y, z are 1/4 ≦ x / y ≦ 8 and z / x + y> 1 / 20 is a positive number, M is a divalent metal ion such as Mg, Ca, Zn, Y is a divalent anion such as CO ₃ ²⁻ , SO ₄ ²⁻ , a is 0 or a positive number) What is represented by
Equation _{(4): Mg x Al y} (OH) 2x + 3y-z (A 2-) P (A -) q · aZ · bH in ₂ O (wherein, A ^2-divalent CO ₃ ^2-, etc. Anion, A ⁻ is a halogen oxyacid ion, Z is a polyhydric alcohol or a partial ester thereof, x, y and z are z = 2p + q, 8 ≧ (x / y) ≧ ¼ and z / (x + y)> 1 / 20 is a positive number satisfying p and q satisfying 1 ≧ q / (2p + q) ≧ 1/10, and a and b are 0.01 ≦ a / (x + y) ≦ 1.0 and Examples thereof include a composite hydroxide described in JP-B-3-36839, which has a chemical composition of 0 ≦ b / (x + y) ≦ 1.0).

  Examples of the aluminum hydroxide and magnesium hydroxide include aluminum hydroxide and magnesium hydroxide. Moreover, the hydroxide which surface-treated to these hydroxide powders may be sufficient. As this surface treating agent, it is preferable in terms of dispersibility and flame retardancy to use one containing a fatty acid or a molybdenum compound.

  The inorganic low-temperature decomposition inhibitor has a lower limit of the average particle size of 0.01 μm or more, preferably 0.05 μm or more, and an upper limit of less than 0.6 μm, preferably less than 0.3 μm. If the average particle size is 0.01 μm or more, the heat stabilizer itself does not aggregate and is easy to handle. On the other hand, if it is less than 0.6 μm, it is smaller than the wavelength of visible light, so that transparency is good.

  In view of the above, the low-temperature decomposition inhibitor is particularly preferably an organic tin mercapto stabilizer, hydrotalcite, or magnesium hydroxide compound having a refractive index close to that of a vinyl chloride resin in consideration of transparency.

  If the low-temperature decomposition inhibitor is not added, the dynamic thermal stability is too low to be molded, and if the addition amount is too large, the transparency and physical properties are lowered, and a satisfactory molded product cannot be obtained. Therefore, the blending amount of the low-temperature decomposition inhibitor is, when the vinyl chloride resin is 100 parts by mass, the lower limit is 1 part by mass or more, preferably 2 parts by mass or more, more preferably 3 parts by mass or more, The upper limit is 10 parts by mass or less, preferably 8 parts by mass or less, and more preferably 6 parts by mass or less. If the blending amount of the low-temperature decomposition inhibitor is 1 part by mass or more, the low-temperature decomposition is not promoted and the moldability is good, and if it is 10 parts by mass or less, the flame retardancy is good.

(High temperature decomposition inhibitor)
In the present vinyl chloride resin composition, it is important to blend an organic compound having a high-temperature decomposition inhibiting function as a high-temperature decomposition inhibitor in addition to the above-described blending components.

  As this high-temperature decomposition inhibitor, lubricants, processing aids, impact modifiers, plasticizers, antistatic agents, ultraviolet absorbers, antioxidants, etc. are included because they have functions such as physical properties and molding processability. It can mention as a preferable example, It is preferable to use combining 1 type, or 2 or more types chosen from these.

Examples of the lubricant include pure hydrocarbons such as liquid paraffin, natural paraffin, micro wax, synthetic paraffin, and low molecular weight polyethylene; halogenated hydrocarbons; fatty acids such as higher fatty acids and oxy fatty acids; fatty acid amides and bis fatty acids. Fatty acid amides such as amides; fatty acid lower alcohol esters, fatty acid polyhydric alcohol esters such as glycerides, fatty acid polyglycol esters, fatty acid fatty alcohol esters (ester waxes) and other ester systems; metal soaps, fatty alcohols, Examples thereof include polyhydric alcohols, polyglycols, polyglycerols, partial esters of fatty acids and polyhydric alcohols, fatty acids and polyglycols, partial esters of polyglycerol, and the like. Of these, lower alcohol esters of fatty acids having excellent high-temperature decomposition inhibiting function, polyhydric alcohol esters of fatty acids such as glycerides and partial esters thereof are particularly preferable.
These can also be used individually by 1 type chosen from these, and can also be used together in combination of 2 or more type.

Examples of the processing aid include homopolymers or copolymers of alkyl methacrylates such as methyl methacrylate, ethyl methacrylate, and butyl methacrylate; and copolymers of the above alkyl methacrylates with alkyl acrylates such as methyl acrylate, ethyl acrylate, and butyl acrylate. Polymer; Copolymer of the above alkyl methacrylate with an aromatic vinyl compound such as styrene, α-methylstyrene, vinyl toluene; Copolymer of the above alkyl methacrylate with a vinyl cyan compound such as acrylonitrile or methacrylonitrile Etc. Among these, a copolymer of methyl methacrylate, butyl acrylate and ethyl methacrylate having an excellent high-temperature decomposition inhibiting function is particularly preferable. These can also be used individually by 1 type chosen from these, and can also be used together in combination of 2 or more type.
By adding an appropriate amount of such an acrylic processing aid, an effect of improving flame retardancy can be obtained, and the load on the molding machine drive unit during molding is increased, so that molding is not difficult.

Examples of the impact modifier include polybutadiene, polyisoprene, polychloroprene, fluororubber, styrene-butadiene copolymer rubber, methyl methacrylate-butadiene-styrene copolymer, methyl methacrylate-butadiene-styrene graft copolymer. Polymer, acrylonitrile-styrene-butadiene copolymer rubber, acrylonitrile-styrene-butadiene graft copolymer, styrene-butadiene-styrene block copolymer rubber, styrene-isoprene-styrene copolymer rubber, styrene-ethylene- Butylene-styrene copolymer rubber, ethylene-propylene copolymer rubber, ethylene-propylene-diene copolymer rubber (EPDM), silicone-containing acrylic rubber, silicone / acrylic composite rubber graft copolymer, silica It can be given over emissions-based rubber and the like. Of these, acrylonitrile-styrene-butadiene copolymer rubber and acrylonitrile-styrene-butadiene graft copolymer having a low high-temperature decomposition inhibiting function are particularly preferable. These impact modifiers can be used alone or in combination of two or more.
Examples of the diene of the ethylene-propylene-diene copolymer rubber (EPDM) include 1,4-hexanediene, dicyclopentadiene, methylene norbornene, ethylidene norbornene, and propenyl norbornene.
These impact modifiers can be used alone or in combination of two or more.

Examples of the plasticizer include dimethyl phthalate, diethyl phthalate, dibutyl phthalate, dihexyl phthalate, dinormal octyl phthalate, 2-ethylhexyl phthalate, diisooctyl phthalate, dicapryl phthalate, dinonyl phthalate, diisononyl phthalate, didecyl phthalate, diisodecyl. Phthalate, diundecyl phthalate, dilauryl phthalate, ditridecyl phthalate, dibenzyl phthalate, dicyclohexyl phthalate, butyl benzyl phthalate, octyl decyl phthalate, butyl octyl phthalate, octyl benzyl phthalate, normal hexyl normal decyl phthalate, normal octyl normal decyl phthalate, etc. Phthalate ester plasticizer; tricresyl phosphate Phosphate ester plasticizers such as tri-2-ethylhexyl phosphate, triphenyl phosphate, 2-ethylhexyl diphenyl phosphate, cresyl diphenyl phosphate; di-2-ethylhexyl adipate, diisodecyl adipate, normal octyl-normal decyl adipate, normal heptyl -Adipate plasticizers such as normal nonyl adipate, diisooctyl adipate, diisonormal octyl adipate, dinormal octyl adipate, didecyl adipate; dibutyl sebacate, di-2-ethylhexyl sebacate, diisooctyl sebacate Sebacic acid ester plasticizers such as butylbenzyl sebacate; di-2-ethylhexyl azelate, dihexyl azelate, diisooctyl azele Azelaic acid plasticizers such as triethyl citrate, triethyl acetylcitrate, tributyl citrate, tributyl citrate citrate, tri-2-ethylhexyl citrate; methylphthalylethylglyco Glycolate ester plasticizers such as rate, ethylphthalylethyl glycolate, butylphthalylbutyl glycolate; tributyl trimellitate, tri-normal hexyl trimellitate, tri-2-ethylhexyl trimellitate, tri-normal octyl Trimellitic acid ester plasticizers such as trimellitate, tri-isoctyl trimellitate, tri-isodecyl trimellitate; phthalic acid isomers such as di-2-ethylhexyl isophthalate and di-2-ethylhexyl terephthalate Ester plasticizers; ricinoleic acid ester plasticizers such as methyl acetyl ricinolate and butyl acetyl ricinolate; polyester plasticizers such as polypropylene adipate, polypropylene sebacate and their modified polyesters; epoxidized soybean oil, epoxy butyl stearate Examples thereof include epoxy plasticizers such as rate, epoxy (2-ethylhexyl) stearate, epoxidized linseed oil, and 2-ethylhexyl epoxy torate. Among these, a phosphate ester plasticizer having a low high-temperature decomposition inhibiting function is particularly preferable.
These can also be used individually by 1 type chosen from these, and can also be used together in combination of 2 or more type.

As the antistatic agent, an anionic surfactant, a cationic surfactant, a nonionic surfactant, and an amphoteric surfactant can be used.
Anionic surfactants include fatty acid salts, higher alcohol sulfates, liquid fatty oil sulfates, aliphatic amines, amide sulfates, dibasic fatty acid ester sulfonates, fatty acid amide sulfonates, alkylaryls Examples thereof include sulfonates, formalin-condensed naphthalenesulfonates, and mixtures thereof.
Examples of the cationic surfactant include aliphatic amine salts, quaternary ammonium salts, alkyl pyridium salts, and mixtures thereof.
Nonionic surfactants include polyoxyethylene alkyl ethers, polyoxyethylene alkylphenol esters, polyoxyethylene alkyl esters, sorbitan alkyl esters, polyoxyethylene sorbitan alkyl esters and mixtures thereof. Can do.
A mixture of a nonionic surfactant and an anionic surfactant or a cationic surfactant may be used.
Examples of amphoteric surfactants include imidazoline type, higher alkylamino type (betaine type), sulfate ester, phosphate ester type, and sulfonic acid type.
Among these, nonionic surfactants having a low high-temperature decomposition inhibiting function are preferable, and sorbitan alkyl esters are more preferable among them.

  Examples of the ultraviolet absorber include hindered phenol, salicylic acid ester, benzophenone, and benzotriazole. Among these, a benzotriazole-based ultraviolet absorber having a low high-temperature decomposition inhibiting function is particularly preferable.

  Examples of the antioxidant include phenolic antioxidants such as 4,4′-butylidenebis- (6-tert-butyl-3-methylphenol), tris (mixed mono and di-nonylphenyl) phosphite, and the like. Examples thereof include phosphite antioxidants and thioether antioxidants such as distearyl thiodipropionate. Among these, phenolic antioxidants such as 4,4'-butylidenebis- (6-tert-butyl-3-methylphenol) having a low high temperature decomposition inhibiting function are particularly preferable.

  If the amount of the high-temperature decomposition inhibitor is too large, the flame retardancy is deteriorated. If the amount is too small, the effect of improving the flame retardancy cannot be obtained. Therefore, the content of the high-temperature decomposition inhibitor is 100 parts by mass of the vinyl chloride resin. On the other hand, the lower limit is 0.1 parts by mass or more, preferably 0.8 parts by mass or more, more preferably 1.6 parts by mass or more, and the upper limit is 7 parts by mass or less, preferably 5 parts by mass or less, more preferably, 4 parts by mass or less.

(Method for producing the present vinyl chloride resin composition)
The present vinyl chloride resin composition can be obtained by mixing a predetermined amount of a vinyl chloride resin, a high temperature decomposition accelerator, a low temperature decomposition inhibitor and a high temperature decomposition inhibitor using a blender, a Henschel mixer or the like. At this time, you may mix | blend other compounding agents, such as a heat-resistant improver and a pigment, in a suitable quantity.

(Manufacture of this molded product)
The present vinyl chloride resin composition can be processed into a main product by molding it into a shape such as a film, sheet, plate material, pipe, or odd-shaped product by extrusion molding, calender molding, press molding method or continuous press molding. .

Of the above molding methods, the calendar press molding method is a molding method under mild conditions, so there is a wide range of selection of stabilizers having a low-temperature decomposition inhibiting function, such as organotin stabilizers, metal soap systems. A stabilizer, zeolite, hydrotalcite, aluminum-based or magnesium-based hydroxide can be used alone or in combination of two or more.
In the calendar press molding method, a thin plate can be preferably molded at the calendar molding stage. In order to obtain a plate body having a desired thickness, a plurality of plates are laminated at a press molding stage to obtain a desired thickness. Therefore, the calendar press molding method does not require a large change in the molding machine when changing the thickness of the molded body, and can change the thickness of the molded body.

  Furthermore, in the calendar press molding method, a plurality of plate bodies obtained in the calendar molding stage are laminated in the press molding stage to obtain a plate body having a desired thickness. There is a certain amount of thickness fluctuation due to molding conditions, etc., and this thickness fluctuation is synergistic with the thickness fluctuation caused by the conditions in the press molding stage, resulting in poor thickness accuracy.

On the other hand, the extrusion molding method is a molding method under harsh conditions of high temperature and high pressure compared to the calendar press molding method, so the range of selection of stabilizers having a low-temperature decomposition inhibiting function is narrow, and organic tin-based stability Agent, metal soap stabilizer, zeolite, hydrotalcite, aluminum and magnesium hydroxide are required in combination. Suitable combinations include a combination of an organotin stabilizer and one or more of zeolite, hydrotalcite, and magnesium hydroxide.
In the extrusion molding method, there is no problem that a so-called glossing phenomenon occurs, and a plate having a desired thickness can be obtained by one-time extrusion, so that there is no problem of delamination (solvent resistance).
The extrusion molding method has problems such as the occurrence of undulations in the plate and uneven thickness by adjusting subtle variations in the extrusion conditions and subtle variations in the drawn plate. It is possible to prevent.

In addition, the extrusion continuous press molding method does not have a problem of delustering or delamination (solvent resistance), and the extruded plate body is pressed subsequent to the extrusion, so there is no waviness phenomenon. This is a particularly preferable molding method in that a plate having a thickness of 5 mm can be obtained with high thickness accuracy.
Examples of the low-temperature decomposition inhibitor suitably used in the continuous extrusion press molding method include organotin stabilizers, hydrotalcites, and magnesium hydroxide.

(Main molded body)
The flame retardancy of a flame retardant vinyl chloride resin molded article can be generally evaluated using a cone calorimeter according to ASTM 1354.
The flame retardant properties evaluated by a combustion test using a corn calorimeter are the maximum value of the calorific value due to combustion per unit area and unit time (maximum calorific value, also referred to as PHRR; unit: kW / m ² ), unit Average value of calorific value due to combustion per area and unit time (average heat rate, also described as AHRR; unit: kW / m ² ), total heat value due to combustion (also described as total heat value, THR; unit: MJ / m ² ), average value of mass reduction rate due to combustion per unit area and unit time (also described as mass reduction rate, AMLR; unit: g / sec · m ² ), light attenuation due to combustion per unit area and unit time maximum value of the volume (maximum dimming volume, also referred to as PSEA; unit: m ² / g), average (average ratio dimming area dimming volume by combustion per unit area and unit time, and ASEA Described; unit: m ² / kg), and the like.

Conventionally, as one of the flame retardant indicators, evaluation standards defined by the Industry Mutual Insurance System have been used effectively. This evaluation standard is measured based on the flame retardancy test (FMRC, CleanRoom Materials Flammability Test Protocol) of clean room materials listed as ClassNumber 4910, and the flame spread index FPI indicating flame retardancy, the smoke index SDI indicating smoke generation, Corrosion index CDI indicating the generation of corrosive gas is used as an index (also referred to as FM standard).
In the present invention, instead of the FM standard, a value evaluated by a combustion test using a cone calorimeter is used as an index of flame retardancy. The FM standard is a standard that is obtained by submitting test specimens to an industry mutual insurance organization and evaluating the industry mutual insurance organization, so it takes time to obtain an evaluation result and is inefficient. The combustion test using a corn calorimeter is efficient because it can be performed by the inventors.
In particular, FPI has a strong correlation with indices related to calorific values such as PHRR, AHRR and THR measured by a corn calorimeter. In addition, SDI has a strong correlation with indicators related to dimming volume such as PSEA and ASEA. Furthermore, CDI has a strong correlation with an index related to mass loss such as AMLR.
Therefore, by evaluating the flame retardancy using a corn calorimeter, the approximate value of the FM standard can be obtained efficiently.

According to the FM standard, FPI is 6 or less and SDI is 0.4 or less. However, in the present invention, PHRR is 130 kW / m ² or less and AHRR is 65 kW / m ² or less as equivalent to or more than this standard. THR is preferably 100 MJ / m ² or less, AMLR is 13 g / sec · m ² or less, PSEA is 1500 m ² / g or less, and ASEA is 800 m ² / kg or less.

When this vinyl chloride resin composition is used and molded to a thickness of 5 μm, the upper limit of the average heat release rate (AHRR) measured according to ASTM E 1354 of the molded product is 65 kW / m ² or less, preferably 50 kW. / M ² or less, more preferably 30 kW / m ² or less. In addition, when the resin composition of the present invention is used to mold to a thickness of 5 μm, the upper limit of the average specific attenuation area (ASEA) measured according to ASTM E 1354 of the molded body is 800 m ² / kg or less, preferably Is 600 m ² / kg or less, more preferably 500 m ² / kg or less.
If the average heat generation rate (AHRR) is 65 kW / m ² or less and the upper limit of the average specific attenuation area (ASEA) is 800 m ² / kg or less, the FM standard can be satisfied.

  In addition, when this vinyl chloride resin composition is used and molded to a thickness of 5 μm, the average heat generation rate (AHRR) and average specific light reduction area (ASEA) of the molded body measured according to ASTME 1354 are constant. In order to adjust to this range, it is preferable to add a chlorine-containing resin having a high-temperature decomposition promoting function and to reduce the number of parts containing an organic compound having a high-temperature decomposition inhibiting function.

The molded article has a total light transmittance of 55 to 100%, preferably 65 to 100%, more preferably 70 to 100%, and a haze value of 0 to 20%, preferably 0 to 10%, more preferably. Is preferably a molded body having a content of 0 to 5%, and particularly preferably has such characteristics when the thickness is 5 mm.
In this molded product, in order to adjust the total light transmittance and the haze to a preferable range, by adding as little chlorine-containing resin having a high-temperature decomposition promoting function and a thermal stabilizer having a low-temperature decomposition suppressing function as much as possible. It is preferable to adjust.

  The molded body has not only excellent flame retardancy but also excellent transparency. Therefore, by using a hard vinyl chloride resin molded body, in particular, interior and exterior materials for airplanes, ships, vehicles, and other transportation equipment; interior and exterior materials for buildings; daily goods such as furniture and office equipment; housings for home appliances and electronic devices Material: It can be suitably used as a component of a semiconductor device.

(Glossary of terms)
In the present invention, when “X to Y” (X and Y are arbitrary numbers) is described, it is preferably “larger than X and smaller than Y” with the intention of “X or more and Y or less” unless otherwise specified. The intention of the effect is also included.

The present inventor, together with a specific high-temperature decomposition accelerator and a low-temperature decomposition inhibitor, is a specific organic compound, and in particular, an organic compound having an excellent function as a lubricant, a processing aid, or the like, at a specific ratio. When blended with a vinyl chloride resin, the following findings were obtained, and the present invention was conceived based on these findings.
(1) Such an organic compound functions as a high-temperature decomposition inhibitor in a system in which the specific high-temperature decomposition accelerator and the low-temperature decomposition inhibitor coexist.
(2) The function as a high-temperature decomposition inhibitor (decomposition-inhibiting function), combined with the decomposition-accelerating function of the high-temperature decomposition accelerator, improves the decomposition of the base material resin (vinyl chloride resin) at high temperatures. Control and give even better flame retardancy to vinyl chloride resin.
(3) Since the function as a lubricant or processing aid, which is the other characteristic of the organic compound, eliminates the use of ordinary lubricants or processing aids generally used for vinyl chloride resins, The high transparency inherent to the vinyl chloride resin that is impaired by the blending of these auxiliaries can be maintained at the same level.

  Hereinafter, although an Example and a comparative example demonstrate in more detail, this invention does not receive a restriction | limiting at all in the following Example.

[Examples 1 to 16]
Chlorine-containing resin (high temperature decomposition accelerator in the table) that has a high temperature decomposition promoting function against vinyl chloride resin having a polymerization degree of 800 (vinyl chloride homopolymer), an organic compound that has a high temperature decomposition inhibiting function (in the table) And a thermal stabilizer having a low-temperature decomposition promoting function ("low-temperature decomposition inhibitor" in the table) in the proportions shown in Tables 1 and 2, and the vinyl chloride resin of the present invention A composition was obtained.
Further, the obtained vinyl chloride resin composition was molded by each molding method shown in Table 1 and Table 2, and the characteristics of the molded body were evaluated by a method according to each molding method (see below for details). .

[Comparative Examples 1 to 11]
For the same vinyl chloride resin used in the examples, a chlorine-containing resin having a high-temperature decomposition promoting function (high-temperature decomposition accelerator in the table), an organic compound having a high-temperature decomposition-inhibiting function (high-temperature decomposition inhibitor in the table) ), A thermal stabilizer having a low-temperature decomposition promoting function (low-temperature decomposition inhibitor in the table) was blended at a ratio shown in Table 3 to obtain a comparative vinyl chloride resin composition.
Further, the obtained vinyl chloride resin composition was molded by each molding method shown in Table 3, and the characteristics of the molded body were evaluated by a method according to each molding method (see below for details).

In addition, in Table 1-3, the numerical value of a compounding ratio is a mass part of each compound with respect to 100 mass parts of vinyl chloride resins.
As the vinyl chloride resin, a vinyl chloride resin having a polymerization degree of 800 (trade name “TH-800” manufactured by Taiyo PVC Co., Ltd.) was used.

The following resins were used as chlorine-containing resins having a high-temperature decomposition accelerating function (see Table 1-3).
Chlorinated polyethylene resin: Trade name “404B” manufactured by Showa Denko
Post-chlorinated vinyl chloride resin: Kaneka product name “H527”
Vinylidene chloride resin: Trade name “Saran168” manufactured by Dow Chemical
Zinc compound: Zinc laurate (trade name “ZS-3” manufactured by Kosho)

The following compounds were used as organic compounds having a high-temperature decomposition inhibiting function (see Table 1-3).
Lubricant: Cognis product name “Roxyol G60”
Processing aid: Rohm & Haas product name "K-120N"
Impact modifier: Product name "BTA712" manufactured by Rohm & Haas
Plasticizer: Product name “DINA” manufactured by J-Plus
Antistatic agent: Trade name “Electro Stripper TS-5” manufactured by Kao Corporation
UV absorber: Product name “Chinubin P” manufactured by Ciba Specialty
Antioxidant: Product name “Irganox 1076” manufactured by Ciba Specialty

The following compounds were used as organic compounds having a high-temperature decomposition inhibiting function (see Table 1-3).
Organotin stabilizer: Product name “N-2000E” manufactured by Nitto Kasei Co., Ltd.
Metal soap stabilizer: Product name “NMZ43” manufactured by Shinagawa Chemical
Zeolite: Tosoh product name “GSL-1000”
Hydrotalcite: Kyowa Chemical Co., Ltd. trade name “Alkamizer 1”
Aluminum hydroxide: Trade name “ALH” manufactured by Kawai Lime Industry Co., Ltd.
Magnesium-based hydroxide: Kyowa Chemical Co., Ltd. trade name “Magsarat F”

[Calendar press molding and evaluation method of the obtained molded body]
The result evaluated by the following evaluation method was combined with Tables 1-3, and was shown.

(1) Moldability:
Molding workability when molded as in the following (2) to (4) was evaluated according to the following criteria.
○: Adhesiveness and local decomposition do not occur on the roll, and it is possible to peel from the press plate with a press, and a molded product having a smooth surface, no color unevenness and streaks can be obtained.
Δ: Some sticking and local decomposition occur on the roll, but it can be peeled off from the press plate with a press, and the surface is smooth, and there are some uneven color streaks, but there are obtained practically no molded products.
X: Adhesion and local decomposition occur on the roll, and a calendar sheet cannot be obtained.

(2) Flame retardancy:
The compositions of Examples and Comparative Examples were kneaded with a 180 ° C. calender roll, sheeted to a thickness of 1 mm, and the obtained six sheets were stacked, and 15 sheets with a 200 ° C. hot plate (10 cm × 10 cm, thickness 5 mm). This calender press was subjected to press molding for a minute, and AHRR (kW / m ² ) and ASEA (m ² / kg) were measured according to ASTME 1354 using a cone calorimeter manufactured by Atlas.

(3) Thermal stability:
The compositions of Examples and Comparative Examples were kneaded with a 180 ° C. calender roll, sheeted to a thickness of 0.5 mm, six sheets obtained were stacked, and press molded to a thickness of 2 mm with a 200 ° C. hot plate for 10 minutes. The change in yellowness (ΔYI) between the compact and the compact that was press-molded for 20 minutes was measured with a color difference meter.

(4) Transparency:
According to JISK 7105, the total light transmittance (%) and the haze value (%) were measured for the transparency of the calender press molding obtained by molding in the same manner as in the above flame retardant evaluation.

[Method for evaluating extrusion molding and obtained molded article]
The result evaluated by the following evaluation method was combined with Tables 1-3, and was shown.

(1) Moldability:
Molding workability when molded as in the following (2) to (4) was evaluated according to the following criteria.
○: Local decomposition does not occur, the resin temperature and the resin pressure can be controlled, color unevenness and streaks do not occur, and a good molded product can be obtained.
(Triangle | delta): Although local decomposition | disassembly, color unevenness, and a part of streaks generate | occur | produce, the molded object which can be adjusted with resin temperature and resin pressure and is practically satisfactory is obtained.
X: Local decomposition occurs, and a molded product cannot be obtained because it is difficult to control the resin temperature and the resin pressure.

(2) Flame retardancy:
The compositions of Examples and Comparative Examples were extruded into a 5 mm-thick plate, and AHRR (kW / m ² ) and ASEA (m ² / kg) were measured on this molded body in the same manner as the calendar press molded body. .

(3) Thermal stability:
The compositions of Examples and Comparative Examples were extruded using a twin screw extruder into a 4 mm thick plate at 200 ° C., and the yellowing change (ΔYI) of the resulting molded product was measured with a color difference meter.

(4) Transparency:
Extrusion-molded into a 1 mm-thick plate with a twin-screw extruder, and the transparency of the resulting molded product was evaluated in the same manner as the calendar press-molded product.

[Continuous press molding and evaluation method of the obtained molded body]
The result evaluated by the following evaluation method was combined with Tables 1-3, and was shown.

(1) Moldability:
Molding workability when molded as in the following (2) to (4) was evaluated according to the following criteria.
○: Local decomposition does not occur, the resin temperature and the resin pressure can be controlled, and peeling can be performed without sticking to the continuous press plate, so that a good molded body can be obtained. In addition, streaks and color irregularities cannot be found visually.
Δ: Partial decomposition occurs, but a molded article that can be adjusted by the resin temperature and the resin pressure and has no practical problem within the range of condition adjustment of the continuous press plate is obtained. Although there are streaks and uneven color, there is no practical problem.
X: Local decomposition occurs, it is difficult to control with the resin temperature and the resin pressure, and the molded product cannot be obtained by sticking with a continuous press plate.

(2) Flame retardancy:
The compositions of Examples and Comparative Examples were extruded into a 10 mm thick plate with a twin-screw extruder, and this was continuously press-molded with a hot plate at 200 ° C. to a thickness of 5 mm. AHRR (kW / m ² ) and ASEA (m ² / kg) were measured in the same manner as the press-molded body.

(3) Thermal stability:
The compositions of Examples and Comparative Examples were extruded into a 4 mm thick plate with a twin-screw extruder, pressed into a 2 mm thickness with a hot plate at 200 ° C. for 10 minutes, and molded for 20 minutes. The yellowing change (ΔYI) with the body was measured with a color difference meter.

(4) Transparency:
Transparency in an extrusion press-molded product obtained by molding in the same manner as in the above flame retardancy evaluation was evaluated in the same manner as the calendar press-formed product.

The present invention has sufficient flame retardancy, thermal stability during molding, and other various characteristics, and when formed into a molded body, sufficient flame retardancy, high transparency, good appearance, and high softening temperature. A vinyl chloride resin composition having various other excellent characteristics can be obtained.
In addition, molded articles obtained from various molding methods of this composition are excellent in flame retardancy and transparency, have a small amount of smoke generation, have a high softening temperature, and have a good appearance. Molded articles made of the resin composition of the present invention using a resin based on the interior and exterior of aircraft, ships, vehicles, etc .; interior / exterior materials for buildings; furniture, office supplies, etc .; household appliances, electronic equipment, etc. Material: Suitable as a component of a semiconductor device.
In particular, the molded body by the continuous extrusion press molding method has no gloss return at the time of heat processing, has excellent solvent resistance, and has a high thickness accuracy. can do.

Claims (6)

  1 to 50 parts by mass of a chlorine-containing resin having a high-temperature decomposition promoting function, 0.1 to 7 parts by mass of an organic compound having a high-temperature decomposition inhibiting function, and a thermal stabilizer having a low-temperature decomposition suppressing function with respect to 100 parts by mass of the vinyl chloride resin A vinyl chloride resin composition comprising 1 to 10 parts by mass. When molded to a thickness of 5 μm, the average heat generation rate (AHRR) measured according to ASTM E1354 is 65 kW / m ² or less, and the average specific light reduction area (ASEA) measured according to ASTM E1354 is 800 m. ^The vinyl chloride resin composition according to claim 1, wherein the vinyl chloride resin composition has a light transmittance of 55 to 100% and a haze value of 0 to 20%.   The chlorine-containing resin having a high-temperature decomposition promoting function is one or a mixture of two or more selected from the group consisting of a chlorinated polyethylene resin, a post-chlorinated vinyl chloride resin, and a vinylidene chloride resin. The vinyl chloride resin composition according to claim 1 or 2.   The organic compound having the high-temperature decomposition inhibiting function is one or more selected from the group consisting of a lubricant, a processing aid, an impact modifier, a plasticizer, an antistatic agent, an ultraviolet absorber and an antioxidant. It is a mixture, The vinyl chloride resin composition in any one of Claims 1-3 characterized by the above-mentioned.   The thermal stabilizer having the low-temperature decomposition inhibiting function is one selected from the group consisting of organotin stabilizers, metal soap stabilizers, zeolites, hydrotalcites, aluminum-based and magnesium-based hydroxides or The vinyl chloride resin composition according to claim 1, which is a mixture of two or more kinds. A vinyl chloride resin molded product obtained by molding the vinyl chloride resin composition according to any one of claims 1 to 5, wherein an average heat generation rate (AHRR) measured according to ASTM 1354 is 65 kW / m. ² or less, the average specific attenuation area (ASEA) measured in accordance with ASTM E1354 is 800 m ² / kg or less, the light transmittance is 55 to 100%, and the haze value is 0 to 20%. A vinyl chloride resin molded article characterized by