Amine-resistant agent for vinyl chloride resins

Abstract

The present invention provides an amine resistance imparting agent for vinyl chloride resin capable of inhibiting discoloration of vinyl chloride resin by an amine, a stabilizer composition for vinyl chloride resin, a vinyl chloride resin composition, a vinyl chloride resin molded article, a laminate, an automobile interior material, and a method for inhibiting discoloration of vinyl chloride resin.　Provided is an amine resistance imparting agent for vinyl chloride resin comprising one or more types of zinc dithiocarbamate compounds represented by general formula (1). In general formula (1), R1 and R2 each independently represent a C1-C20 alkyl group, a C6-C20 aryl group, or a C7-C20 arylalkyl group, and R1 and R2 may be linked and form a ring along with the nitrogen atom that each bonds to.

Description

[Technical Field]

[0001] The present invention relates to an amine-resistant agent for vinyl chloride resins (hereinafter also referred to as "amine-resistant agent"), and more particularly to an amine-resistant agent for vinyl chloride resins that can suppress amine-induced discoloration of vinyl chloride resins, a stabilizer composition for vinyl chloride resins, a vinyl chloride resin composition, a molded article of vinyl chloride resin (hereinafter also referred to as "stabilizer composition," "resin composition," and "molded article," respectively), a laminate, an automotive interior material, and a method for suppressing discoloration of vinyl chloride resins. [Background technology]

[0002] Vinyl chloride resins possess excellent properties such as flame retardancy, chemical resistance, mechanical stability, heat resistance, and weather resistance, and are also inexpensive, making them widely used as general-purpose resin materials with high utility value. They are particularly frequently used as surface materials for automotive interiors.

[0003] Various interior materials are used in the cabin of a car to improve ride comfort. Typically, automotive interior materials consist of a surface layer that provides a soft feel, texture, luxury, and aesthetic appeal, and a base layer that maintains the structure. Furthermore, the surface layer is often backed with a foam layer such as urethane to enhance its softness.

[0004] This surface layer can be made from materials such as polyvinyl chloride resin, thermoplastic elastomer, or polyolefin foams like polyethylene. Among these, polyvinyl chloride resin is widely used because it can produce a variety of textures, from semi-rigid to soft, depending on the amount of plasticizer added, and it also offers excellent moldability and design flexibility.

[0005] In interior materials using polyvinyl chloride resin, laminates of polyvinyl chloride resin molded articles and foamed polyurethane are often used to create a soft feel, with the foamed polyurethane (also called polyurethane foam molded articles) acting as a backing.

[0006] However, when vinyl chloride resin is used as a laminate with foamed polyurethane, there is a problem in that the vinyl chloride resin molded product becomes discolored due to the migration of amine compounds used as catalysts during the formation of the polyurethane foam molded product to the vinyl chloride resin molded product. Therefore, in order to prevent this discoloration of the vinyl chloride resin molded product by amine compounds, a method has been proposed in which perchloric acid compounds such as sodium perchlorate, barium perchlorate, and perchloric acid-treated hydrotalcite are incorporated into the vinyl chloride resin composition (Patent Documents 1 and 2). Furthermore, Patent Document 3 proposes a vinyl chloride resin composition to which zinc dithiocarbamate has been added. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Application Publication No. 5-17648 [Patent Document 2] Japanese Patent Application Publication No. 7-173354 [Patent Document 3] Japanese Patent Application Publication No. 63-27546 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] However, the method of incorporating perchlorate compounds into vinyl chloride resin compositions, as proposed in Patent Documents 1 and 2, did not sufficiently suppress discoloration. Furthermore, perchlorates, which are also used in explosives and gunpowder, are classified as Class 1 (oxidizing solids) hazardous materials under the Fire Service Act and always pose a risk of explosion or fire due to friction or impact. Moreover, water pollution by perchlorates has been reported in at least 20 US states, and the California Department of Toxic Substances Control (DTSC) has established regulations regarding the handling of perchlorates. Therefore, the use of perchlorate compounds raises many safety and environmental concerns. For these reasons, there is a need for a vinyl chloride resin composition or automotive interior material suitable for automotive components, etc., that does not use perchlorate compounds and suppresses discoloration caused by amines.

[0009] Furthermore, the invention proposed in Patent Document 3 is for improving the blackening phenomenon (zinc burning phenomenon) and weather resistance of polyvinyl chloride resin due to zinc, and is clearly different from suppressing discoloration of polyvinyl chloride resin due to amines. Currently, we have not gained any insights in this regard.

[0010] Therefore, the object of the present invention is to provide an amine-resistant agent for vinyl chloride resins, a stabilizer composition for vinyl chloride resins, a vinyl chloride resin composition, a vinyl chloride resin molded article, a laminate, an automotive interior material, and a method for suppressing discoloration of vinyl chloride resins, all of which can suppress discoloration of vinyl chloride resins due to amines. [Means for solving the problem]

[0011] As a result of diligent research to solve the above problems, the inventors of the present invention have found that a certain zinc dithiocarbamate compound can suppress discoloration of vinyl chloride resins caused by amines, and have completed the present invention.

[0012] In other words, the amine-resistant agent for vinyl chloride resins of the present invention is characterized by containing one or more zinc dithiocarbamate compounds represented by the following general formula (1).

[0013] TIFF0007870732000001.tif35158

[0014] In general formula (1), R 1 and R 2 Each of these independently represents an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, or an arylalkyl group having 7 to 20 carbon atoms, R 1 and R 2 These atoms may be linked together to form a ring with the nitrogen atom to which they are bonded.

[0015] In the amine resistance-imparting agent for vinyl chloride-based resins of the present invention, the vinyl chloride-based resin is preferably a vinyl chloride-based resin for automotive interior materials. In particular, it is preferable that the vinyl chloride-based resin for automotive interior materials is a raw material resin of a vinyl chloride-based resin molded body used in an automotive interior material composed of a laminate of a vinyl chloride-based resin molded body and a polyurethane foam molded body.

[0016] The stabilizer composition for vinyl chloride-based resins of the present invention is characterized by containing one or more stabilizers for vinyl chloride-based resins and the amine resistance-imparting agent for vinyl chloride-based resins of the present invention.

[0017] The vinyl chloride-based resin composition of the present invention is characterized by containing a vinyl chloride-based resin and the amine resistance-imparting agent for vinyl chloride-based resins of the present invention.

[0018] In the vinyl chloride-based resin composition of the present invention, the content of the amine resistance-imparting agent for vinyl chloride-based resins is preferably 0.005 to 3.0 parts by mass with respect to 100 parts by mass of the vinyl chloride-based resin. The vinyl chloride-based resin composition of the present invention is suitable for powder molding.

[0019] The vinyl chloride-based resin molded body of the present invention is characterized by being obtained from the vinyl chloride-based resin composition of the present invention.

[0020] The laminate of the present invention is a laminate of a vinyl chloride-based resin molded body and a polyurethane foam, and is characterized in that the vinyl chloride-based resin molded body is obtained from the vinyl chloride-based resin composition of the present invention.

[0021] The automotive interior material of the present invention is characterized by including the vinyl chloride-based resin molded body of the present invention. Another automotive interior material of the present invention is characterized by including the laminate of the present invention.

[0022] The present invention relates to a method for suppressing discoloration of a vinyl chloride resin, and is a method for suppressing discoloration of an automotive interior material including a laminate of a vinyl chloride resin molded article and a polyurethane foam molded article, characterized in that the amine-resistant agent for vinyl chloride resins of the present invention is blended into the vinyl chloride resin, which is the raw material resin for the vinyl chloride resin molded article. [Effects of the Invention]

[0023] According to the present invention, it is possible to provide an amine-resistant agent for vinyl chloride resins, a stabilizer composition for vinyl chloride resins, a vinyl chloride resin composition, a molded vinyl chloride resin article, a laminate, an automotive interior material, and a method for suppressing discoloration of vinyl chloride resins, all of which can suppress discoloration of vinyl chloride resins due to amines.

[0024] The vinyl chloride resin molded article of the present invention exhibits suppressed discoloration due to amine compounds and is suitable as an automotive interior material. [Modes for carrying out the invention]

[0025] Embodiments of the present invention will be described in detail below. First, the amine-resistant agent for vinyl chloride resins of the present invention will be described. The amine-resistant agent of the present invention has the function of imparting amine resistance to vinyl chloride resins, thereby suppressing discoloration of vinyl chloride resins caused by amine compounds.

[0026] The present invention provides an amine-resistant agent for vinyl chloride resins, which contains one or more zinc dithiocarbamate compounds represented by the following general formula (1).

[0027] TIFF0007870732000002.tif35158

[0028] In general formula (1), R 1 and R 2 Each of these independently represents an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, or an arylalkyl group having 7 to 20 carbon atoms.

[0029] R in the general formula (1) 1 and R 2 Examples of the C1-C20 alkyl group for R[ / i] and [i]R in the general formula (1) include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, neopentyl, tert-amyl, 1,2-dimethylpropyl, n-hexyl, cyclohexyl, 1,3-dimethylbutyl, 1-isopropylpropyl, 1,2-dimethylbutyl, n-heptyl, 2-heptyl, 1,4-dimethylpentyl, tert-heptyl, 2-methyl-1-isopropylpropyl, 1-ethyl-3-methylbutyl, n-octyl, tert-octyl, 2-ethylhexyl, 2-methylhexyl, 2-propylhexyl, n-nonyl, isononyl, n-decyl, isodecyl, n-undecyl, isoundecyl, n-dodecyl, isododecyl, n-tridecyl, isotridecyl, n-tetradecyl, isotetradecyl, n-pentadecyl, isopentadecyl, n-hexadecyl, isohexadecyl, n-heptadecyl, isoheptadecyl, n-octadecyl, isooctadecyl, n-nonadecyl, isononadecyl, n-icosyl, isicosyl, cyclopentyl, cyclohexyl, cyclooctyl, cyclododecyl and the like. The alkylene moiety of the alkyl group may be interrupted 1 to 5 times by an unsaturated bond, an ether bond, a thioether bond, an ester bond, a thioester bond, an amide bond or a urethane bond.

[0030] R in the general formula (1) 1 and R 2 Examples of the C6-C20 aryl group for R[ / i] and [i]R in the general formula (1) include phenyl, p-methylphenyl, o-methylphenyl, p-tert-butylphenyl, p-methoxyphenyl, o-biphenylyl, m-biphenylyl, p-biphenylyl, α-naphthyl, β-naphthyl, 1-anthryl, 2-anthryl, 9-anthryl, 1-phenanthryl, 2-phenanthryl, 3-phenanthryl, 4-phenanthryl, 9-phenanthryl, benzyl and the like.

[0031] R in the general formula (1) 1 and R 2Examples of arylalkyl groups having 7 to 20 carbon atoms include benzyl, phenethyl, 2-phenylpropan-2-yl, styryl, cinnamyl, diphenylmethyl, and triphenylmethyl.

[0032] Also, R in general formula (1) 1 and R 2 These atoms may be linked together to form a ring with the nitrogen atom to which they are bonded. Examples of such rings include pyrrolidine rings and piperidine rings.

[0033] R 1 and R 2 From the viewpoint of imparting amine resistance to vinyl chloride resins, alkyl groups having 1 to 4 carbon atoms, phenyl groups, or benzyl groups are preferred, methyl groups, ethyl groups, n-propyl groups, n-butyl groups, phenyl groups, or benzyl groups are more preferred, methyl groups or ethyl groups are even more preferred, and ethyl groups are particularly preferred.

[0034] Specific examples of zinc dithiocarbamate compounds represented by general formula (1) that are preferred in terms of imparting amine resistance include compounds No. 1 to No. 7 listed below. Among these, compounds No. 1, No. 2, No. 4, No. 5, No. 6, and No. 7 are more preferred in terms of imparting amine resistance, compounds No. 1 and No. 2 are even more preferred, and compound No. 2 is particularly preferred.

[0035] TIFF0007870732000003.tif112170TIFF0007870732000004.tif76169TIFF0007870732000005.tif43169

[0036] The amine-resistant agent of the present invention is also preferably used in combination with one or more stabilizers for vinyl chloride resins and used as a stabilizer composition for vinyl chloride resins.

[0037] As stabilizers used in combination with amine-resistant agents, zinc salts of organic acids other than dithiocarbamic acid are preferred from the viewpoint of amine resistance and thermal stability. Examples of such zinc salts of organic acids include zinc salts of organic carboxylic acids, phenols, and organic phosphoric acids.

[0038] Examples of organic carboxylic acids include acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, enanthic acid, caprylic acid, pelargonic acid, 2-ethylhexyl acid, neodecanoic acid, capric acid, undecanoic acid, isoundecylic acid, lauric acid, isolauric acid, tridecanoic acid, myristic acid, isomyristic acid, palmitic acid, isopalmitic acid, isostearic acid, stearic acid, 12-hydroxystearic acid, behenic acid, montanic acid, versatic acid, benzoic acid, monochlorobenzoic acid, and 4-tert-butylbenzoic acid. Tolic acid, dimethylhydroxybenzoic acid, 3,5-di-tert-butyl-4-hydroxybenzoic acid, o-tolic acid, m-tolic acid, p-tolic acid, tolic acid, dimethylbenzoic acid, 2,4-dimethylbenzoic acid, 3,5-dimethylbenzoic acid, 2,4,6-trimethylbenzoic acid, ethylbenzoic acid, 2-ethylbenzoic acid, 3-ethylbenzoic acid, 4-ethylbenzoic acid, 2,4,6-triethylbenzoic acid, 4-isopropylbenzoic acid, n-propylbenzoic acid, aminobenzoic acid, N,N-dimethylaminobenzoic acid, acetoxy Monocarboxylic acids such as benzoic acid, salicylic acid, p-teroctylsalicylic acid, elaidic acid, oleic acid, linoleic acid, linolenic acid, myristoleic acid, palmitoleic acid, eleostearic acid, eicosenoic acid, eicosadienoic acid, eicosatrienoic acid, eicosatetraenoic acid, arachidonic acid, docosapentaenoic acid, docosahexaenoic acid, ricinoleic acid, thioglycolic acid, mercaptopropionic acid, octylmercaptopropionic acid; oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, s Examples include dicarboxylic acids such as beric acid, azelaic acid, sebacic acid, phthalic acid, isophthalic acid, terephthalic acid, hydroxyphthalic acid, chlorphthalic acid, aminophthalic acid, maleic acid, fumaric acid, citraconic acid, metaconic acid, itaconic acid, aconitic acid, and thiodipropionic acid, or their monoesters and monoamide compounds; and diesters and triester compounds of trivalent or tetravalent carboxylic acids such as butanetricarboxylic acid, butanetetracarboxylic acid, hemimeric acid, trimellitic acid, merophanic acid, and pyromellitic acid.

[0039] Examples of phenols include tertiary butylphenol, nonylphenol, dinonylphenol, cyclohexylphenol, phenylphenol, octylphenol, phenol, cresol, xylenol, n-butylphenol, isoamylphenol, ethylphenol, isopropylphenol, isooctylphenol, 2-ethylhexylphenol, tertiary nonylphenol, decylphenol, tertiary octylphenol, isohexylphenol, octadecylphenol, diisobutylphenol, methylpropylphenol, diamylphenol, methylisohexylphenol, and methyltertiary octylphenol.

[0040] Examples of organophosphates include mono-dioctyl phosphate, mono-didodecyl phosphate, mono-dioctadecyl phosphate, mono-di-(nonylphenyl) phosphate, nonylphenyl phosphonate, and stearyl phosphonate.

[0041] The zinc salt of the organic acid may be an acidic salt, a neutral salt, a basic salt, or an overbasic complex obtained by neutralizing some or all of the base of a basic salt with carbonic acid.

[0042] A zinc salt of an organic acid may be composed of two or more organic acids. For example, in the case of a zinc salt of a monovalent organic acid, the same organic acid may form an anionic moiety and form a salt with divalent zinc which forms a cation moiety, or two different monovalent organic acids may form anionic moieties and form a salt with divalent zinc which forms a cation moiety.

[0043] From the viewpoint of amine resistance and thermal stability, zinc benzoate, zinc toluate, zinc 4-tert-butylbenzoate, zinc stearate, zinc laurate, zinc versatate, zinc octoate, zinc oleate, zinc palmitate, and zinc myristice are preferred as zinc salts. One type of zinc salt of organic acid may be used, or two or more types may be used in combination.

[0044] When the stabilizer composition of the present invention contains a zinc salt of an organic acid, the content of the zinc salt of the organic acid is preferably 5 to 20,000 parts by mass, more preferably 10 to 8,000 parts by mass, and even more preferably 20 to 800 parts by mass, relative to 100 parts by mass of the amine-resistant agent, from the viewpoint of amine resistance and thermal stability.

[0045] Furthermore, in the stabilizer composition of the present invention, the stabilizer used in combination with the amine-resistant agent is preferably one or more selected from the group consisting of barium salts of organic acids and perbasic barium carbonate salts, from the viewpoint of amine resistance and thermal stability.

[0046] First, let's discuss barium salts of organic acids. Examples of barium salts of organic acids include barium salts of organic carboxylic acids, phenols, and organic phosphoric acids.

[0047] Examples of organic carboxylic acids include acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, enanthic acid, caprylic acid, pelargonic acid, 2-ethylhexyl acid, neodecanoic acid, capric acid, undecanoic acid, isoundecylic acid, lauric acid, isolauric acid, tridecanoic acid, myristic acid, isomyristic acid, palmitic acid, isopalmitic acid, isostearic acid, stearic acid, 12-hydroxystearic acid, behenic acid, montanic acid, versatic acid, benzoic acid, monochlorobenzoic acid, and 4-tert-butylbenzoic acid. Tolic acid, dimethylhydroxybenzoic acid, 3,5-di-tert-butyl-4-hydroxybenzoic acid, o-tolic acid, m-tolic acid, p-tolic acid, tolic acid, dimethylbenzoic acid, 2,4-dimethylbenzoic acid, 3,5-dimethylbenzoic acid, 2,4,6-trimethylbenzoic acid, ethylbenzoic acid, 2-ethylbenzoic acid, 3-ethylbenzoic acid, 4-ethylbenzoic acid, 2,4,6-triethylbenzoic acid, 4-isopropylbenzoic acid, n-propylbenzoic acid, aminobenzoic acid, N,N-dimethylaminobenzoic acid, acetoxy Monocarboxylic acids such as benzoic acid, salicylic acid, p-teroctylsalicylic acid, elaidic acid, oleic acid, linoleic acid, linolenic acid, myristoleic acid, palmitoleic acid, eleostearic acid, eicosenoic acid, eicosadienoic acid, eicosatrienoic acid, eicosatetraenoic acid, arachidonic acid, docosapentaenoic acid, docosahexaenoic acid, ricinoleic acid, thioglycolic acid, mercaptopropionic acid, octylmercaptopropionic acid; oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, s Examples include dicarboxylic acids such as beric acid, azelaic acid, sebacic acid, phthalic acid, isophthalic acid, terephthalic acid, hydroxyphthalic acid, chlorphthalic acid, aminophthalic acid, maleic acid, fumaric acid, citraconic acid, metaconic acid, itaconic acid, aconitic acid, and thiodipropionic acid, or their monoesters and monoamide compounds; and diesters and triester compounds of trivalent or tetravalent carboxylic acids such as butanetricarboxylic acid, butanetetracarboxylic acid, hemimeric acid, trimellitic acid, merophanic acid, and pyromellitic acid.

[0048] Examples of phenols include tertiary butylphenol, nonylphenol, dinonylphenol, cyclohexylphenol, phenylphenol, octylphenol, phenol, cresol, xylenol, n-butylphenol, isoamylphenol, ethylphenol, isopropylphenol, isooctylphenol, 2-ethylhexylphenol, tertiary nonylphenol, decylphenol, tertiary octylphenol, isohexylphenol, octadecylphenol, diisobutylphenol, methylpropylphenol, diamylphenol, methylisohexylphenol, and methyltertiary octylphenol.

[0049] Examples of organophosphates include mono-dioctyl phosphate, mono-didodecyl phosphate, mono-dioctadecyl phosphate, mono-di-(nonylphenyl) phosphate, nonylphenyl phosphonate, and stearyl phosphonate.

[0050] Barium salts of organic acids may be composed of two or more organic acids. For example, in the case of a barium salt of a monovalent organic acid, the same organic acid may form an anionic moiety and form a salt with divalent barium which forms a cation moiety, or two different monovalent organic acids may form anionic moieties and form a salt with divalent barium which forms a cation moiety.

[0051] You may use only one type of barium salt of an organic acid, or two or more types in combination.

[0052] Furthermore, the barium salt of the organic acid may be an acidic salt, a neutral salt, or a basic salt.

[0053] Next, we will explain overbasic barium carbonate salts. Overbasic barium carbonate salts are liquid overbasic carboxylate / carbonate complexes of barium. Unlike a simple mixture of barium carboxylate and barium carbonate, this complex is formed through some kind of interaction between the two, and it has the characteristic of exhibiting a uniform liquid state in organic solvents while having a high metal content. This complex is composed of barium carboxylate, barium carbonate, and a complex salt of barium carboxylic acid and carbonic acid as its constituent components. Barium carbonate is at the center, with barium carboxylate and the complex salt of barium carboxylic acid and carbonic acid surrounding it, forming something like micelles, which allows it to exhibit a uniform liquid state in organic solvents.

[0054] These liquid, overbasic barium carboxylate / carbonate complexes can be produced, for example, by the manufacturing method described in Japanese Patent Publication No. 2004-238364.

[0055] Furthermore, various commercially available barium liquid perbasic carboxylate / carbonate complexes can be used as is. Representative examples of commercially available complexes include "Plastistab™ 2116" (perbasic barium oleate / carbonate complex: specific gravity 1.42-1.53, Ba=33-36%), "Plastistab™ 2513" (perbasic barium oleate / carbonate complex: specific gravity 1.41-1.52, Ba=33-36%), and "Plastistab™ 2508" (perbasic barium oleate / carbonate complex: specific gravity 1.39-1.51, Ba=33-36%) from AM STABILIZERS, USA.

[0056] These perbasic barium carbonate salts may be used individually or in combination of two or more types.

[0057] When the stabilizer composition of the present invention contains a barium salt of an organic acid or a perbasic barium carbonate salt, the amount of these salts is preferably 10 to 60,000 parts by mass, more preferably 30 to 10,000 parts by mass, and even more preferably 50 to 2,000 parts by mass, per 100 parts by mass of the amine-resistant agent, from the viewpoint of amine resistance and thermal stability.

[0058] Furthermore, in the stabilizer composition of the present invention, the stabilizer used in combination with the amine-resistant agent is preferably one or more selected from the group consisting of calcium salts of organic acids and perbasic calcium carbonates, from the viewpoint of amine resistance and thermal stability. Examples of such calcium salts of organic acids include calcium salts of organic carboxylic acids, phenols, and organic phosphoric acids.

[0059] Examples of organic carboxylic acids include those exemplified by barium salts. Examples of phenols include those exemplified by barium salts. Examples of organic phosphoric acids include those exemplified by barium salts.

[0060] A calcium salt of an organic acid may be composed of two or more organic acids. For example, in the case of a calcium salt of a monovalent organic acid, the same organic acid may form an anionic moiety and form a salt with divalent calcium which forms a cation moiety, or two different monovalent organic acids may form anionic moieties and form a salt with divalent calcium which forms a cation moiety.

[0061] You may use only one type of calcium salt of an organic acid, or two or more types in combination.

[0062] The calcium salt of the organic acid may be an acidic salt, a neutral salt, or a basic salt.

[0063] Next, we will explain overbasic calcium carbonate salts. Overbasic calcium carbonate salts are liquid overbasic carboxylate / carbonate complexes of calcium. Unlike a simple mixture of calcium carboxylic acid salt and calcium carbonate, this complex is formed through some kind of interaction between the two, and it has the characteristic of exhibiting a uniform liquid state in organic solvents while having a high metal content. This complex is composed of calcium carboxylic acid salt, calcium carbonate, and a complex salt of calcium carboxylic acid and carbonic acid as its constituent components. Calcium carbonate is at the center, with the calcium carboxylic acid salt and the complex salt surrounding it, forming something like micelles, which allows it to exhibit a uniform liquid state in organic solvents.

[0064] Liquid perbasic carboxylate / carbonate complexes of calcium can be prepared in the same way as liquid perbasic carboxylate / carbonate complexes of barium. Alternatively, various commercially available complexes can be used as is. A representative example of a commercially available complex is "Plastistab™ 2265" (perbasic calcium oleate / carbonate complex: specific gravity 1.04-1.09, Ca=10%) from AM STABILIZERS, Inc., USA.

[0065] These perbasic calcium carbonate salts may be used individually or in combination of two or more types.

[0066] When the stabilizer composition of the present invention contains a calcium salt of an organic acid or a perbasic calcium carbonate salt, the amount of these salts is preferably 10 to 60,000 parts by mass, more preferably 30 to 10,000 parts by mass, and even more preferably 50 to 2,000 parts by mass, per 100 parts by mass of the amine-resistant agent, from the viewpoint of amine resistance and thermal stability.

[0067] Furthermore, in the stabilizer composition of the present invention, β-diketone compounds are preferred as stabilizers used in combination with the amine-resistant agent, from the viewpoint of amine resistance and thermal stability. Examples of such β-diketone compounds include acetylacetone, triacetylmethane, 2,4,6-heptatrione, butanoylacetylmethane, lauroylacetylmethane, palmitoylacetylmethane, stearoylbenzoylmethane, palmitoylbenzoylmethane, distearoylmethane, stearoylacetylmethane, phenylacetylacetylmethane, dicyclohexylcarbonylmethane, benzoylformylmethane, benzoylacetylmethane, dibenzoylmethane, octylbenzoylmethane, and benzoylformylmethane. Examples of metal salts include s(4-octylbenzoyl)methane, benzoyldiacetylmethane, 4-methoxybenzoylbenzoylmethane, bis(4-carboxymethylbenzoyl)methane, 2-carboxymethylbenzoylacetyloctylmethane, dehydroacetic acid, ethyl acetoethyl, cyclohexane-1,3-dione, methyl 3,6-dimethyl-2,4-dioxycyclohexane-1carboxylate, 2-acetylcyclohexanone, dimedone, 2-benzoylcyclohexane, etc., and their metal salts can be used in the same way. Examples of metal salts include lithium salts, sodium salts, potassium salts, calcium salts, zinc salts, magnesium salts, and aluminum salts. Examples of preferred metal salts include acetylacetone calcium salt and acetylacetone zinc salt.

[0068] One type of β-diketone compound may be used, or two or more types may be used in combination. Among these β-diketone compounds, dibenzoylmethane, stearoylbenzoylmethane, or zinc acetylacetone salt are preferred in terms of amine resistance and thermal stability.

[0069] When the stabilizer composition of the present invention contains a β-diketone compound, the content is preferably 10 to 60,000 parts by mass, more preferably 30 to 10,000 parts by mass, and even more preferably 50 to 2,000 parts by mass, per 100 parts by mass of the amine-resistant agent, from the viewpoint of amine resistance and thermal stability.

[0070] Furthermore, in the stabilizer composition of the present invention, one or more phosphite ester compounds are preferred as stabilizers used in combination with the amine resistance imparting agent, from the viewpoint of amine resistance and thermal stability. Examples of such phosphite ester compounds include trialkyl phosphite, dialkyl phosphite, dialkyl monoallyl phosphite, alkylallyl phosphite, monoalkyl diallyl phosphite, diallyl phosphite, and triallyl phosphite. In the stabilizer composition of the present invention, both triesters and diesters can be used, but triesters are preferred from the viewpoint of thermal stability. Thioesters can also be used.

[0071] Examples of phosphite ester compounds include triphenyl phosphite, tricresyl phosphite, tris(2,4-di-tert-butylphenyl) phosphite, tris(nonylphenyl) phosphite, tris(dinonylphenyl) phosphite, tris(mono- and di-mixed nonylphenyl) phosphite, tris(2,4-di-tert-butylphenyl) phosphite, diphenyl phosphite, 2,2'-methylenebis(4,6-di-tert-butylphenyl)octyl phosphite, and 2,2'-methylenebis(4,6-tert-butylphenyl). -2-ethylhexyl phosphite, 2,2'-methylenebis(4,6-tertiary butylphenyl)-octadecyl phosphite, 2,2'-ethyldenbis(4,6-ditertiary butylphenyl) fluorophosphite, octyldiphenyl phosphite, diphenyldecyl phosphite, diphenyl(2-ethylhexyl) phosphite, di(decyl)monophenyl phosphite, diphenyltridecyl phosphite, diphenyl(C12-C15 mixed alkyl) phosphite, phenyldiisodecyl phosphite, phenylbis(isotridecyl (Syl) phosphite, triethyl phosphite, tributyl phosphite, tris(2-ethylhexyl) phosphite, tris(decyl) phosphite, trilauryl phosphite, tris(tridecyl) phosphite, trioleyl phosphite, tristearyl phosphite, diethyl phosphite, dibutyl phosphite, dilauryl phosphite, bis(2-ethylhexyl) phosphite, dioleyl phosphite, trilauryl trithiophosphite, bis(neopentyl glycol)-1,4-cyclohexanedimethyl di Phosphite, bis(2,4-diter-butylphenyl)pentaerythritol diphosphite, bis(2,6-diter-butyl-4-methylphenyl)pentaerythritol diphosphite, bis(2,4,6-triter-butylphenyl)pentaerythritol diphosphite, bis(2,4-dicumylphenyl)pentaerythritol diphosphite, distearylpentaerythritol diphosphite, di(nonylphenyl)pentaerythritol diphosphite, di(tridecyl)pentaerythritol diphosphite, phenyl-4,4'-Isopropylidenediphenol Pentaerythritol Diphosphite, Tetra(C12~15 mixed alkyl)-4,4'-Isopropylidenediphenyl Diphosphite, Hydrogenated-4,4'-Isopropylidenediphenol Polyphosphite, Bis(octylphenyl)-Bis[4,4'-n-Butylidenebis(2-Tertiary butyl-5-methylphenol)]-1,6-Hexanediol Diphosphite, Tetra(tridecyl)-4,4'-n-Butylidenebis(2-Tertiary butyl-5-methylphenol) Diphosphite, Hexa(tridecyl)-1,1,3-Tris(2-methyl-4-hydroxy-5-tertiary butylphenyl)butane Triphosphite, Hexa(tridecyl)-1,1,3-Tris(2-methyl-5-tertiary butyl-4-hydroxyphenyl)butane Examples include diphosphites, 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, 2-butyl-2-ethylpropanediol·2,4,6-triter-butylphenol monophosphite, tris[2-terter-butyl-4-(3-terter-butyl-4-hydroxy-5-methylphenylthio)-5-methylphenyl]phosphite, tetra(tridecyl)isopropylidenediphenol diphosphite, tetrakis(2,4-diter-butylphenyl)biphenylenediphosphite, tris(2-[(2,4,8,10-tetrakister-butyldibenzo[d,f][1,3,2]dioxaphosphine-6-yl)oxy]ethyl)amine, and phosphites of 2-ethyl-2-butylpropylene glycol and 2,4,6-triter-butylphenol.

[0072] One type of phosphite ester compound may be used, or two or more types may be used in combination. Among these phosphite ester compounds, from the viewpoint of thermal stability, it is preferable to use a phosphite ester compound having 12 to 80 carbon atoms, more preferably a phosphite ester compound having 12 to 46 carbon atoms, more preferably a phosphite ester compound having 12 to 36 carbon atoms, and more preferably a phosphite ester compound having 18 to 30 carbon atoms.

[0073] When the stabilizer composition of the present invention contains a phosphite ester compound, the amount contained therein is preferably 10 to 60,000 parts by mass, more preferably 50 to 6,000 parts by mass, and even more preferably 100 to 2,000 parts by mass, per 100 parts by mass of the amine-resistant agent, from the viewpoint of amine resistance and thermal stability.

[0074] Furthermore, in the stabilizer composition of the present invention, one or more phenolic antioxidants are preferred as stabilizers used in combination with the amine-resistant agent, from the viewpoint of amine resistance and thermal stability. Examples of such phenolic antioxidants include 2,6-diter-butyl-p-cresol, 2,6-diphenyl-4-octadecyloxyphenol, stearyl(3,5-diter-butyl-4-hydroxyphenyl)-propionate, distearyl(3,5-diter-butyl-4-hydroxybenzyl)phosphonate, thiodiethylene glycol bis[(3,5-diter-butyl-4-hydroxyphenyl)propionate], and 1,6-hexamethylene bis[(3, [5-Diter-butyl-4-hydroxyphenyl)propionate], 1,6-Hexamethylenebis[(3,5-Diter-butyl-4-hydroxyphenyl)propionamide], 4,4'-Thiobis(6-Terter-butyl-m-cresol), 2,2'-Methylenebis(4-methyl-6-terter-butylphenol), 2,2'-Methylenebis(4-ethyl-6-terter-butylphenol), Bis[3,3-Bis(4-hydroxy-3-terter-butylphenyl)butyric acid] ] Glycol ester, 4,4'-Butylidenebis(6-Triter-butyl-m-cresol), 2,2'-Ethylidenebis(4,6-Diter-butylphenol), 2,2'-Ethylidenebis(4-Second-butyl-6-Triter-butylphenol), 1,1,3-Tris(2-Methyl-4-Hydroxy-5-Triter-butylphenyl)butane, Bis[2-Triter-butyl-4-methyl-6-(2-Hydroxy-3-Triter-butyl-5-methylbenzyl)phenyl]terephthalate, 1,3, 5-Tris(2,6-dimethyl-3-hydroxy-4-tertiary butylbenzyl) isocyanurate, 1,3,5-Tris(3,5-ditertiary butyl-4-hydroxybenzyl) isocyanurate, 1,3,5-Tris(3,5-ditertiary butyl-4-hydroxybenzyl)-2,4,6-trimethylbenzene, 1,3,5-Tris[(3,5-ditertiary butyl-4-hydroxyphenyl)propionyloxyethyl] isocyanurate, tetrakis[methylene-3-(3',Examples include 5'-diter-butyl-4'-hydroxyphenyl)propionate]methane, 2-tert-butyl-4-methyl-6-(2-acryloyloxy-3-tert-butyl-5-methylbenzyl)phenol, 3,9-bis[1,1-dimethyl-2-{(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy}ethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane, triethylene glycol bis[(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate], etc.

[0075] One type of phenolic antioxidant may be used, or two or more may be used in combination. Among these phenolic antioxidants, pentaerythritol tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] or octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate are preferred in terms of thermal stability.

[0076] When the stabilizer composition of the present invention contains a phenolic antioxidant, the amount of the antioxidant is preferably 1 to 2000 parts by mass, more preferably 2 to 200 parts by mass, and even more preferably 4 to 100 parts by mass, relative to 100 parts by mass of the amine-resistant agent, from the viewpoint of amine resistance and thermal stability.

[0077] Furthermore, in the stabilizer composition of the present invention, one or more hindered amine-based light stabilizers are preferred as stabilizers used in combination with the amine-resistant agent, from the viewpoint of amine resistance and thermal stability. Examples of such hindered amine-based light stabilizers include 2,2,6,6-tetramethyl-4-piperidyl stearate, 1,2,2,6,6-pentamethyl-4-piperidyl stearate, 2,2,6,6-tetramethyl-4-piperidyl benzoate, bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, bis(1-octoxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate, tetramethyl (2,2,6,6-tetramethyl-4-piperidyl)-1,2,3,4-butanetetracarboxylate, tetrakis(1,2,2,6,6-pentamethyl-4-piperidyl)-1,2,3,4-butanetetracarboxylate, bis(2,2,6,6-tetramethyl-4-piperidyl)·bis(tridecyl)-1,2,3,4-butanetetracarboxylate, bis(1,2,2,6,6-pentamethyl-4-piperidyl)·bis(tridecyl)-1,2,3,4-butanetetracarboxylate T, bis(1,2,2,6,6-pentamethyl-4-piperidyl)-2-butyl-2-(3,5-diter-butyl-4-hydroxybenzyl)malonate, 1,2,2,6,6-pentamethyl-4-piperidyl methacrylate, poly[{6-(1,1,3,3-tetramethylbutyl)amino-1,3,5-triazine-2,4-diyl}{(2,2,6,6-tetramethyl-4-piperidyl)imino}hexamethylene{(2,2,6,6-tetramethyl-4-piperidyl)imino}], 1,2,3,4 -Butanecarboxylic acid / 2,2-bis(hydroxymethyl)-1,3-propanediol / 3-hydroxy-2,2-dimethylpropanal / 1,2,2,6,6-pentamethyl-4-piperidinyl ester polycondensate, bis(1,2,2,6,6-pentamethyl-4-piperidyl)=decandioate / methyl=1,2,2,6,6-pentamethyl-4-piperidyl=sebacate mixture, 2,2,6,6-tetramethyl-4-piperidyl methacrylate, 1-(2-hydroxyethyl)-2,2,6,6-Tetramethyl-4-piperidinol / diethyl succinate polycondensate, 1,6-bis(2,2,6,6-tetramethyl-4-piperidylamino)hexane / dibromoethane polycondensate, 1,6-bis(2,2,6,6-tetramethyl-4-piperidylamino)hexane / 2,4-dichloro-6-morpholino-s-triazine polycondensate, 1,6-bis(2,2,6,6-tetramethyl-4-piperidylamino)hexane / 2,4-dichloro-6-tertiaryoctylamino-s-triazine polycondensate, 1,5,8,12-Tetrakis[2,4-bis(N-butyl-N-(2,2,6,6-tetramethyl-4-piperidyl)amino)-s-triazine-6-yl]-1,5,8,12-tetraazadodecane, 1,5,8,12-Tetrakis[2,4-bis(N-butyl-N-(1,2,2,6,6-pentamethyl-4-piperidyl)amino)-s-triazine-6-yl]-1,5,8,12-tetraazadodecane, 1,6,11-Tris[2,4-bis(N-butyl-N-(2,2,6,6 -Tetramethyl-4-piperidyl)amino)-s-triazine-6-ylamino]undecane, 1,6,11-tris[2,4-bis(N-butyl-N-(1,2,2,6,6-pentamethyl-4-piperidyl)amino)-s-triazine-6-ylamino]undecane, 3,9-bis[1,1-dimethyl-2-{tris(2,2,6,6-tetramethyl-4-piperidyloxycarbonyl)butylcarbonyloxy}ethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane Examples include 3,9-bis[1,1-dimethyl-2-{tris(1,2,2,6,6-pentamethyl-4-piperidyloxycarbonyl)butylcarbonyloxy}ethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane, bis(1-undecyloxy-2,2,6,6-tetramethylpiperidine-4-yl)carbonate, 2,2,6,6-tetramethyl-4-piperidylhexadecanoate, and 2,2,6,6-tetramethyl-4-piperidyloctadecanoate.

[0078] Hindered amine light stabilizers may be used individually or in combination of two or more types.

[0079] When the stabilizer composition of the present invention contains a hindered amine-based light stabilizer, the amount contained therein is preferably 5 to 15,000 parts by mass, more preferably 10 to 2,000 parts by mass, and even more preferably 20 to 700 parts by mass, relative to 100 parts by mass of the amine-resistant agent, from the viewpoint of amine resistance and thermal stability.

[0080] Furthermore, in the stabilizer composition of the present invention, one or more inorganic additives are preferred as stabilizers used in combination with the amine resistance imparting agent, from the viewpoint of amine resistance and thermal stability. Examples of such inorganic additives include hydrotalcite compounds and zeolite compounds.

[0081] Examples of hydrotalcite compounds include those represented by the following general formula (2).

[0082] TIFF0007870732000006.tif11154

[0083] In general formula (2), x1, x2, and y1 are numbers that satisfy the conditions expressed by the following formulas: 0 ≤ x2 / x1 < 10, 2 ≤ x1 + x2 < 20, and 0 ≤ y1 ≤ 2, respectively, and m is 0 or any integer.

[0084] Preferably, hydrotalcite compounds are double salt compounds consisting of magnesium and aluminum, or zinc, magnesium, and aluminum. Alternatively, they may be compounds from which the crystal water has been dehydrated. Such hydrotalcite compounds may be natural products or synthetic products. There are no restrictions on the crystal structure, crystal particle size, etc., of the hydrotalcite compound.

[0085] Furthermore, hydrotalcite compounds can also be used in which their surface is coated with higher fatty acids such as stearic acid, higher fatty acid metal salts such as alkali metal oleates, organic sulfonic acid metal salts such as alkali metal dodecylbenzenesulfonates, higher fatty acid amides, higher fatty acid esters, or waxes.

[0086] However, in the stabilizer composition of the present invention, hydrotalcite compounds containing perchlorate anions or those treated with perchlorates can be used, but their use is undesirable from a safety and environmental perspective.

[0087] Hydrotalcite compounds may be used individually or in combination of two or more.

[0088] Zeolite compounds are aluminosilicates of alkali or alkaline earth metals having a unique three-dimensional zeolite crystal structure. Representative examples include A-type, X-type, Y-type, and P-type zeolites, monodenite, analcite, sodalite aluminosilicates, clinobutyrolite, erionite, and chabacite. These zeolite compounds can be either hydrated (containing crystal water, so-called zeolite water) or anhydrous (with crystal water removed), and their particle size can range from 0.1 to 50 μm, with a particularly preferred size of 0.5 to 10 μm. Only one type of zeolite compound may be used, or two or more types may be used in combination.

[0089] Inorganic additives may be used individually or in combination of two or more, and hydrotalcite compounds and zeolite compounds may be used in combination.

[0090] When an inorganic auxiliary agent is included in the stabilizer composition of the present invention, its content is preferably 50 to 80,000 parts by mass, more preferably 100 to 8,000 parts by mass, and even more preferably 400 to 4,000 parts by mass, relative to 100 parts by mass of the amine-resistant agent, from the viewpoint of amine resistance and thermal stability.

[0091] Next, the vinyl chloride-based resin composition of the present invention will be described. The vinyl chloride resin composition of the present invention is characterized in that the vinyl chloride resin is blended with the amine-resistant agent of the present invention.

[0092] The vinyl chloride resin in the vinyl chloride resin composition of the present invention is not particularly limited to bulk polymerization, solution polymerization, suspension polymerization, emulsion polymerization, etc., and the polymerization method is not limited to polyvinyl chloride, chlorinated polyvinyl chloride, polyvinylidene chloride, chlorinated polyethylene, vinyl chloride-vinyl acetate copolymer, vinyl chloride-ethylene copolymer, vinyl chloride-propylene copolymer, vinyl chloride-styrene copolymer, vinyl chloride-isobutylene copolymer, vinyl chloride-vinylidene chloride copolymer, vinyl chloride-styrene-maleic anhydride terpolymer, vinyl chloride-styrene-acrylonitrile copolymer, vinyl chloride-butadiene copolymer, vinyl chloride-isoprene copolymer, chlorine Examples of vinyl chloride resins include vinyl-chlorinated propylene copolymers, vinyl chloride-vinylidene chloride-vinyacetate terpolymers, vinyl chloride-maleic acid ester copolymers, vinyl chloride-methacrylate ester copolymers, vinyl chloride-acrylonitrile copolymers, vinyl chloride-various vinyl ether copolymers, and blends thereof or other chlorine-free synthetic resins, such as acrylonitrile-styrene copolymers, acrylonitrile-butadiene-styrene copolymers, ethylene-vinyl acetate copolymers, ethylene-ethyl (meth)acrylate copolymers, polyesters, etc. Blends, block copolymers, graft copolymers, etc. These vinyl chloride resins may be mixtures of two or more types, or mixtures with other synthetic resins. From the viewpoint of amine resistance, polyvinyl chloride is preferred as the vinyl chloride resin used, and polyvinyl chloride used for powder molding is particularly preferred.

[0093] In the vinyl chloride resin composition of the present invention, the amine-resistant agent of the present invention is preferably used in an amount of 0.005 to 3.0 parts by mass, more preferably 0.01 to 2.0 parts by mass, even more preferably 0.02 to 1.0 parts by mass, and even more preferably 0.05 to 0.5 parts by mass, per 100 parts by mass of vinyl chloride resin, from the viewpoint of imparting amine resistance to the vinyl chloride resin. If the amount is less than 0.005 parts by mass, the amine resistance may be insufficient, and even if it exceeds 3.0 parts by mass, the improvement in effect is small and may even adversely affect other properties.

[0094] The amine-resistant agent may be incorporated into the vinyl chloride resin as part of a stabilizer composition, or it may be incorporated into the vinyl chloride resin separately from the stabilizer and other components.

[0095] The vinyl chloride resin composition of the present invention preferably contains a plasticizer.

[0096] Examples of plasticizers include phthalate-based plasticizers such as dibutyl phthalate, butylhexyl phthalate, diheptyl phthalate, dioctyl phthalate, diisononyl phthalate, diisodecyl phthalate, dilauryl phthalate, dicyclohexyl phthalate, and dioctyl terephthalate; adipate-based plasticizers such as dioctyl adipate, diisononyl adipate, diisodecyl adipate, and di(butyldiglycol) adipate; phosphate-based plasticizers such as triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, tri(isopropylphenyl) phosphate, triethyl phosphate, tributyl phosphate, trioctyl phosphate, tri(butoxyethyl) phosphate, and octyldiphenyl phosphate; and ethylene glycol and diethylene Polyester-based plasticizers using polyhydric alcohols such as glycol, triethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,3-butanediol, 1,4-butanediol, 1,5-hexanediol, 1,6-hexanediol, and neopentyl glycol, and dibasic acids such as oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebatic acid, phthalic acid, isophthalic acid, and terephthalic acid, with monohydric alcohols and monocarboxylic acids used as stoppers as needed; other examples include tetrahydrophthalic acid-based plasticizers, azelaic acid-based plasticizers, sebatic acid-based plasticizers, stearic acid-based plasticizers, citric acid-based plasticizers, trimellitic acid-based plasticizers, pyromellitic acid-based plasticizers, and biphenylene polycarboxylic acid-based plasticizers. These plasticizers may be used individually or in combination of two or more types.

[0097] Among these plasticizers, at least one selected from the group consisting of trimellitic acid ester compounds (trimellitic acid-based plasticizers) and pyromellitic acid ester compounds (pyromellitic acid-based plasticizers) is preferred from the viewpoint of amine resistance.

[0098] As trimellitic acid ester compounds or pyromellitic acid ester compounds, triester compounds or tetraester compounds of trimellitic acid or pyromellitic acid with a monohydric alcohol are used, respectively.

[0099] Monohydric alcohols used to produce trimellitic acid triester compounds or pyromellitic acid tetraester compounds include, for example, methanol, ethanol, propyl alcohol, isopropyl alcohol, butyl alcohol, isobutyl alcohol, 2-butyl alcohol, 3-butyl alcohol, pentyl alcohol, isopentyl alcohol, hexanol, isohexanol, heptanol, octanol, 2-ethylhexanol, nonyl alcohol, isononyl alcohol, decanol, isodecanol, undecanol, dodecanol, tridecanol, isotridecanol, tetradecanol, pentadecanol, hexadecanol, heptadecanol, octadecanol, nonadecanol, eicosanol, henicosanol, docosanol, and other linear or branched alcohols and mixtures thereof.

[0100] In the vinyl chloride resin composition of the present invention, the content of the plasticizer is preferably 5 to 200 parts by mass, and more preferably 10 to 100 parts by mass, per 100 parts by mass of the vinyl chloride resin, from the viewpoint of amine resistance.

[0101] The vinyl chloride resin composition of the present invention preferably contains one or more stabilizers. The stabilizers may be blended as a stabilizer composition, or they may be blended individually.

[0102] Furthermore, the vinyl chloride resin composition of the present invention may contain other additives commonly used in vinyl chloride resin compositions, such as epoxy compounds, polyhydric alcohol compounds, ultraviolet absorbers, and fillers.

[0103] Examples of epoxy compounds include bisphenol-type and novolac-type epoxy resins, epoxidized soybean oil, epoxidized linseed oil, epoxidized tung oil, epoxidized fish oil, epoxidized beef tallow oil, epoxidized castor oil, epoxidized safflower oil, epoxidized octyl tall oil fatty acid, epoxidized butyl linseed oil fatty acid, methyl,-butyl,-2-ethylhexyl or-stearyl epoxystearate, tris(epoxypropyl)isocyanurate, 3-(2-xenoxy)-1,2-epoxypropane, epoxidized polybutadiene, bisphenol-A diglycidyl ether, hydrogenated bisphenol-A diglycidyl ether, vinylcyclohexene diepoxide, dicyclopentadiene diepoxide, 3,4-epoxycyclohexyl-6-methylepoxycyclohexanecarboxylate, bis(3,4-epoxycyclohexyl)adipate, and the like. One epoxy compound may be used alone, or two or more may be used in combination.

[0104] Examples of polyhydric alcohols include pentaerythritol, dipentaerythritol, tripentaerythritol, polypentaerythritol, neopentyl glycol, trimethylolpropane, ditrimethylolpropane, 1,3,5-tris(2-hydroxyethyl) isocyanurate, polyethylene glycol, glycerin, diglycerin, mannitol, maltitol, lactitol, sorbitol, erythritol, xylitol, xylose, sucrose, trehalose, inositol, fructose, maltose, and lactose. A single polyhydric alcohol compound may be used, or two or more may be used in combination.

[0105] Examples of UV absorbers include 2-hydroxybenzophenones such as 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-octoxybenzophenone, and 5,5'-methylenebis(2-hydroxy-4-methoxybenzophenone); 2-(2-hydroxy-5-methylphenyl)benzotriazole, 2-(2-hydroxy-5-tertiary octylphenyl)benzotriazole, 2-(2-hydroxy-3,5-ditertiary butylphenyl)-5-chlorobenzotriazole, 2-(2-hydroxy-3-tertiary butylphenyl)-5-chlorobenzotriazole, 2-(2-hydroxy-3,5-dicumylphenyl)benzotriazole, 2,2'-methylenebis(4-tertiary octyl-6-benzotriazolyl)phenol, and polyethylene glycol ester of 2-(2-hydroxy-3-tertiary butyl-5-carboxyphenyl)benzotriazole; and phenyl salicylates. Benzoates such as resorcinol monobenzoate, 2,4-diter-butylphenyl-3,5-diter-butyl-4-hydroxybenzoate, 2,4-diter-amylphenyl-3,5-diter-butyl-4-hydroxybenzoate, hexadecyl-3,5-diter-butyl-4-hydroxybenzoate; substituted oxanilides such as 2-ethyl-2'-ethoxyoxanilide and 2-ethoxy-4'-dodecyloxanilide; ethyl-α-cyano-β,β-diphenylacrylate, methyl-2 Examples include cyanoacrylates such as -cyano-3-methyl-3-(p-methoxyphenyl)acrylate; and triaryltriazines such as 2-(2-hydroxy-4-octoxyphenyl)-4,6-bis(2,4-diter-butylphenyl)-s-triazine, 2-(2-hydroxy-4-methoxyphenyl)-4,6-diphenyl-s-triazine, and 2-(2-hydroxy-4-propoxy-5-methylphenyl)-4,6-bis(2,4-diter-butylphenyl)-s-triazine. These UV absorbers may be used individually or in combination of two or more.

[0106] Examples of fillers include calcium carbonate, calcium oxide, calcium hydroxide, zinc hydroxide, zinc carbonate, zinc sulfide, magnesium oxide, magnesium hydroxide, magnesium carbonate, aluminum oxide, aluminum hydroxide, sodium aluminosilicate, hydrocalmite, aluminum silicate, magnesium silicate, calcium silicate, zeolite, activated clay, talc, clay, red iron oxide, asbestos, antimony trioxide, silica, glass beads, mica, sericite, glass flakes, asbestos, wollonite, potassium titanate, PMF, gypsum fiber, zonolite, MOS, phosphate fiber, glass fiber, carbon fiber, and aramid fiber. These fillers may be used individually or in combination of two or more types.

[0107] The vinyl chloride resin composition of the present invention may further contain, as needed, crosslinking agents, foaming agents, antistatic agents, antifogging agents, plate-out prevention agents, surface treatment agents, lubricants, flame retardants, fluorescent agents, fungicides, disinfectants, metal deactivators, mold release agents, pigments, processing aids, solvents, and the like.

[0108] Examples of lubricants include hydrocarbon lubricants such as low molecular weight waxes, paraffin wax, polyethylene wax, chlorinated hydrocarbons, and fluorocarbons; natural wax lubricants such as carnauba wax and candelilla wax; fatty acid lubricants such as higher fatty acids such as lauric acid, stearic acid, and behenic acid, as well as oxy fatty acids such as hydroxystearic acid; aliphatic amide lubricants such as aliphatic amide compounds such as stearylamide, laurylamide, and oleylamide, as well as alkylene bisaliphatic amides such as methylenebisstearylamide and ethylenebisstearylamide; and fatty acid monohydric alcohol ester compounds such as stearyl stearate, butyl stearate, and distearyl phthalate. Other examples include fatty acid alcohol ester lubricants such as glycerin tristearate, sorbitan tristearate, pentaerythritol tetrastearate, dipentaerythritol hexastearate, polyglycerin polyricinolate, hydrogenated castor oil, and other fatty acid alcohol ester compounds; complex ester compounds of monohydric fatty acids and polybasic organic acids with polyhydric alcohols, such as adipic acid / stearic acid ester of dipentaerythritol; aliphatic alcohol lubricants such as stearyl alcohol, lauryl alcohol, and palmityl alcohol; metal soaps; montanic acid lubricants such as partially saponified montanic acid esters; acrylic lubricants; and silicone oils. These lubricants may be used individually or in combination of two or more types.

[0109] Examples of processing aids include homopolymers or copolymers of alkyl methacrylates such as methyl methacrylate, ethyl methacrylate, and butyl methacrylate; copolymers of the above alkyl methacrylates with alkyl acrylates such as methyl acrylate, ethyl acrylate, and butyl acrylate; copolymers of the above alkyl methacrylates with aromatic vinyl compounds such as styrene, α-methylstyrene, and vinyltoluene; and copolymers of the above alkyl methacrylates with vinyl cyanide compounds such as acrylonitrile and methacrylonitrile. These processing aids may be used individually or in combination of two or more.

[0110] Examples of pigments include white pigments such as titanium dioxide, and blue pigments such as ultramarine blue and phthalocyanine blue.

[0111] The vinyl chloride resin composition of the present invention may further contain other additives commonly used in vinyl chloride resins, such as sulfur-based antioxidants, impact resistance modifiers, reinforcing agents, perchlorates, magnesium salts of organic acids, overbasic magnesium carbonate salts, flame retardants, flame retardant enhancers, etc., to the extent that they do not impair the effects of the present invention.

[0112] Examples of sulfur-based antioxidants include dialkylthiodipropionates such as dilauryl, dimyristyl, myristylstearyl, and distearyl esters of thiodipropionic acid, and β-alkyl mercaptopropionate esters of polyols such as pentaerythritol tetra(β-dodecyl mercaptopropionate). These sulfur-based antioxidants may be used individually or in combination of two or more.

[0113] Examples of impact resistance modifiers include polybutadiene, polyisoprene, polychloroprene, fluororubber, styrene-butadiene copolymer rubber, methyl methacrylate-butadiene-styrene copolymer, methyl methacrylate-butadiene-styrene graft copolymer, 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, and silicone rubber. Examples of the diene used in the ethylene-propylene-diene copolymer rubber (EPDM) include 1,4-hexanediene, dicyclopentadiene, methylenenorbornene, ethylidenenorbornene, and propenylnorbornene. These impact-resistant modifiers may be used individually or in combination of two or more types.

[0114] The reinforcing agent can be in the form of fibers, plates, granules, or powders commonly used to reinforce synthetic resins. Specifically, it can be an inorganic fibrous reinforcing material such as glass fiber, asbestos fiber, carbon fiber, graphite fiber, metal fiber, potassium titanate whisker, aluminum borate whisker, magnesium whisker, silicon whisker, warlastenite, sepiolite, asbestos, slag fiber, zonolite, elestadite, gypsum fiber, silica fiber, silica-alumina fiber, zirconia fiber, boron nitride fiber, silicon nitride fiber, and boron fiber, as well as polyester fiber, nylon fiber, acrylic fiber, regenerated cellulose fiber, acetate fiber, kenaf, ramie, cotton, jute, hemp, and rhinoceros. Examples of reinforcing agents include organic fibrous reinforcing agents such as sieves, flax, linen, silk, Manila hemp, sugarcane, wood pulp, paper waste, recycled paper, and wool; and plate-like or granular reinforcing agents such as glass flakes, non-swelling mica, graphite, metal foil, ceramic beads, clay, mica, sericite, zeolite, bentonite, dolomite, kaolin, fine silica, feldspar powder, potassium titanate, shirasu balloons, calcium carbonate, magnesium carbonate, barium sulfate, calcium oxide, aluminum oxide, titanium oxide, aluminum silicate, silicon dioxide, gypsum, novaculite, dawsonite, and white clay. These reinforcing agents may be coated or bundled with thermoplastic resins such as ethylene / vinyl acetate copolymers or thermosetting resins such as epoxy resins, or treated with coupling agents such as aminosilanes or epoxysilanes. These reinforcing agents may be used individually or in combination of two or more.

[0115] Examples of perchlorates include metal perchlorates, ammonium perchlorates, and perchloric acid-treated silicates. Examples of metals that make up these metal salts include lithium, sodium, potassium, calcium, magnesium, strontium, barium, zinc, cadmium, lead, and aluminum. Metal perchlorates may be anhydrous or hydrated, or dissolved in alcohol-based or ester-based solvents such as butyl diglycol and butyl diglycol adipate, or their dehydrated forms. These perchlorates may be used individually or in combination of two or more. However, in the resin composition of the present invention, the use of perchlorates is undesirable from a safety and environmental perspective.

[0116] This section explains magnesium salts of organic acids. Examples of magnesium salts of organic acids include magnesium salts of organic carboxylic acids, phenols, and organic phosphoric acids.

[0117] Examples of organic carboxylic acids include barium salts of organic acids. Examples of phenols include barium salts of organic acids. Examples of organic phosphoric acids include barium salts of organic acids. Magnesium salts of organic acids may be composed of two or more organic acids. For example, in the case of a magnesium salt of a monovalent organic acid, the same organic acid may form an anionic moiety and form a salt with divalent magnesium which forms a cation moiety, or two different monovalent organic acids may form anionic moieties and form a salt with divalent magnesium which forms a cation moiety. Magnesium salts of organic acids may be used by one type or by two or more types in combination.

[0118] Furthermore, the magnesium salt of the organic acid may be an acidic salt, a neutral salt, or a basic salt.

[0119] This section describes overbasic magnesium carbonate salts. Overbasic magnesium carbonate salts are liquid overbasic carboxylate / carbonate complexes of magnesium. Unlike simple mixtures of magnesium, magnesium carboxylate, and magnesium carbonate, these complexes are formed through some kind of interaction, and they have the characteristic of exhibiting a uniform liquid state in organic solvents while having a high metal content. This complex is composed of magnesium carboxylate, magnesium carbonate, and a complex salt of magnesium carboxylic acid and carbonic acid as its constituent components. Magnesium carbonate is at the center, with magnesium carboxylate and the complex salt surrounding it, forming something like micelles, which allows it to exhibit a uniform liquid state in organic solvents.

[0120] Liquid overbasic carboxylate / carbonate complexes of magnesium can be prepared in the same manner as liquid overbasic carboxylate / carbonate complexes of barium. Alternatively, commercially available complexes can be used as is.

[0121] These perbasic magnesium carbonate salts may be used individually or in combination of two or more types.

[0122] Examples of flame retardants and flame retardant additives include triazine ring-containing compounds, metal hydroxides, other inorganic phosphorus, halogenated flame retardants, silicone flame retardants, phosphate ester flame retardants, condensed phosphate ester flame retardants, intomescent flame retardants, antimony oxides such as antimony trioxide, other inorganic flame retardant additives, and organic flame retardant additives.

[0123] Examples of triazine ring-containing compounds include melamine, ammeline, benzguanamine, acetoguanamine, phthalodiguanamine, melamine cyanurate, melamine pyrophosphate, butylenediguanamine, norbornenediguanamine, methylenediguanamine, ethylenedimelamine, trimethylenedimelamine, tetramethylenedimelamine, hexamethylenedimelamine, and 1,3-hexylenedimelamine.

[0124] Examples of metal hydroxides include magnesium hydroxide, aluminum hydroxide, calcium hydroxide, barium hydroxide, zinc hydroxide, and Kissmer 5A (magnesium hydroxide: manufactured by Kyowa Chemical Industry Co., Ltd.).

[0125] Examples of phosphate ester-based flame retardants include trimethyl phosphate, triethyl phosphate, tributyl phosphate, tributoxyethyl phosphate, trischloroethyl phosphate, trisdichloropropyl phosphate, triphenyl phosphate, tricresyl phosphate, cresyldiphenyl phosphate, trixylenyl phosphate, octyldiphenyl phosphate, xylenyldiphenyl phosphate, trisisopropylphenyl phosphate, 2-ethylhexyldiphenyl phosphate, t-butylphenyldiphenyl phosphate, bis-(t-butylphenyl)phenyl phosphate, tris-(t-butylphenyl) phosphate, isopropylphenyldiphenyl phosphate, bis-(isopropylphenyl)diphenyl phosphate, and tris-(isopropylphenyl) phosphate.

[0126] Examples of condensed phosphate ester flame retardants include 1,3-phenylenebis(diphenyl phosphate), 1,3-phenylenebis(dixylenyl phosphate), and bisphenol A bis(diphenyl phosphate). Examples of intomessent flame retardants include ammonium salts and amine salts of (poly)phosphates, such as ammonium polyphosphate, melamine polyphosphate, piperazine polyphosphate, ammonium pyrophosphate, melamine pyrophosphate, and piperazine pyrophosphate.

[0127] Other inorganic flame retardant additives include, for example, inorganic compounds such as titanium dioxide, aluminum oxide, magnesium oxide, and talc, as well as surface-treated products thereof. Various commercially available products can be used, such as TIPAQUE R-680 (titanium dioxide: manufactured by Ishihara Sangyo Co., Ltd.) and Kyowa Mag 150 (magnesium oxide: manufactured by Kyowa Chemical Industry Co., Ltd.).

[0128] These flame retardants and flame retardant enhancers may be used individually or in combination of two or more types.

[0129] The vinyl chloride resin composition of the present invention may also contain lead-based stabilizers, cadmium-based stabilizers, or tin-based stabilizers; however, it is preferable that these be omitted from the standpoint of toxicity and adverse environmental impact.

[0130] Furthermore, the vinyl chloride resin composition of the present invention may contain stabilizing agents commonly used in vinyl chloride resins, provided that they do not impair the effects of the present invention. Examples of such stabilizing agents include diphenylthiourea, anilinodithiotriazine, melamine, benzoic acid, cinnamic acid, and p-ter-butylbenzoic acid. Additionally, if necessary, additives commonly used in vinyl chloride resins, such as crosslinking agents, antistatic agents, antifogging agents, plate-out inhibitors, surface treatment agents, fluorescent agents, antifungal agents, disinfectants, metal deactivators, and mold release agents, may be added, provided that they do not impair the effects of the present invention. These optional components may be used individually or in combination of two or more.

[0131] The vinyl chloride resin composition of the present invention can be prepared by stirring and mixing the amine-resistant agent, vinyl chloride resin, and optionally stabilizers, plasticizers, and various additives using a stirrer such as a mortar mixer, Henschel mixer, Banbury mixer, or ribbon blender to obtain a mixed powder of the vinyl chloride resin composition.

[0132] Furthermore, a pelletized vinyl chloride resin composition can also be obtained by melt-molding the amine-resistant agent, vinyl chloride resin, and optionally stabilizers, plasticizers, and various additives of the present invention using a kneader such as a conical twin-screw extruder, parallel twin-screw extruder, single-screw extruder, cone-type kneader, or roll kneader.

[0133] Alternatively, the amine-resistant agent, vinyl chloride paste resin, and optionally stabilizers, plasticizers, and various additives of the present invention can be uniformly mixed using a mixer such as a pony mixer, butterfly mixer, planetary mixer, ribbon blender, kneader, dissolver, twin-screw mixer, Henschel mixer, or three-roll mill, and degassed under reduced pressure as needed to obtain a paste-like vinyl chloride resin composition.

[0134] Next, the vinyl chloride resin molded article of the present invention will be described. The vinyl chloride resin molded articles of the present invention can be molded into a desired shape by melt molding a vinyl chloride resin composition (in the form of a blended powder or pellets) according to the present invention using conventionally known methods such as vacuum molding, compression molding, extrusion molding, injection molding, calendering, press molding, blow molding, and powder molding.

[0135] On the other hand, a paste-like vinyl chloride resin composition can be molded into a desired shape by using conventionally known methods such as spread molding, dipping molding, gravure molding, slush molding, and screen processing.

[0136] In the molded articles of the present invention, from the viewpoint of amine resistance, molded articles obtained by powder molding such as powder slush molding, fluid dipping molding, and powder rotational molding are preferred, and molded articles obtained by powder slush molding are particularly preferred.

[0137] The shape of the molded body is not particularly limited, but examples include rod-shaped, sheet-shaped, film-shaped, plate-shaped, cylindrical, circular, elliptical, star-shaped, polygonal, and so on.

[0138] From the viewpoint of amine resistance, the vinyl chloride resin molded article of the present invention is preferably a laminate of polyurethane, particularly a polyurethane foam molded article.

[0139] Polyurethane, particularly polyurethane foam molded articles, can be any conventionally known type and can be obtained, for example, as follows: by reacting polyurethane foam raw materials containing polyols, polyisocyanates, a blowing agent, and a catalyst, followed by foaming and curing.

[0140] Polyols used include polyether polyols and polyester polyols. Polyether polyols include polypropylene glycol, polytetramethylene glycol, polyether polyols made from polymers obtained by addition polymerization of polyhydric alcohols with propylene oxide and ethylene oxide, and modified versions thereof. Examples of polyhydric alcohols include glycerin and dipropylene glycol. Polyester polyols include condensation-type polyester polyols obtained by reacting polycarboxylic acids such as adipic acid and phthalic acid with polyols such as ethylene glycol, diethylene glycol, propylene glycol, and glycerin, as well as lactone-based polyester polyols and polycarbonate-based polyols.

[0141] Polyisocyanates are compounds having multiple isocyanate groups, and specifically include tolylene diisocyanate (TDI), 4,4-diphenylmethane diisocyanate (MDI), 1,5-naphthalene diisocyanate (NDI), triphenylmethane triisocyanate, xylylene diisocyanate (XDI), hexamethylene diisocyanate (HDI), dicyclohexylmethane diisocyanate, isophorone diisocyanate (IPDI), and modified versions thereof.

[0142] Foaming agents are used to foam polyurethane resin to create polyurethane foam molded articles. Examples of foaming agents include water, pentane, cyclopentane, hexane, cyclohexane, dichloromethane, and carbon dioxide.

[0143] The catalyst is intended to accelerate the urethane reaction between polyols and polyisocyanates, and includes triethylenediamine, dimethylethanolamine, N,N',N'-trimethylaminoethylpiperazine, triphenylamine, triethylamine, N,N,N',,N'-tetramethyl-1,3-butanediamine, N-methylmorpholine, N-ethylmorpholine, N-acetylmorpholine, N-octylmorpholine, N-phenylmorpholine, N-hydroxylethylmorpholine, N-hydroxylmethylmorpholine, 4,4 A amine catalyst that is a tertiary amine such as '-dithiodimorpholine, dimethylpiperazine, N,N,N',N'-tetramethylpropanediamine, trimethylaminoethylpiperazine, N,N-dimethylethanolamine, dimethylhexadecylamine, 1-(2-ethylhexenyl)piperazine, tri-n-octylamine, trimethylamine, N,N'-dimethylbenzylamine, triethanolamine, 1,2,4-trimethylpiperazine, N-methyldicyclohexylamine, or methyldicyclohexylamine is preferred.

[0144] The present invention is preferable because it is excellent at providing an effect that suppresses discoloration of vinyl chloride resins by using an amine catalyst that promotes this urethane reaction.

[0145] The vinyl chloride resin molded article and the laminate of the vinyl chloride resin molded article and the polyurethane foam molded article of the present invention are useful and preferred as automotive interior materials from the viewpoint of amine resistance. In particular, it is preferable that the laminate composed of the vinyl chloride resin molded article and the polyurethane foam molded article be used as the surface layer, and that it be further composed of a base layer for maintaining the structure. Known materials such as polypropylene resin molded articles and ABS resin molded articles can be used for the base layer.

[0146] Examples of automotive interior materials include instrument panels, door trims, console boxes, glove boxes, pillar trims, dashboards, trunk trims, seats, ceiling materials, automatic transmission shifters, armrests, headrests, floor carpets, wire harnesses, various moldings, sashes, sealing materials, weatherstrips, gaskets, undercoat materials, etc. In particular, these automotive interior materials laminated with polyurethane foam molded bodies are very useful and preferred, such as instrument panels, door trims, seats, and ceiling materials. [Examples]

[0147] The present invention will be described in detail below with reference to examples. However, the present invention is not limited in any way by the following examples.

[0148] [Examples 1-8, Comparative Examples 1-3] A vinyl chloride resin composition was obtained by mixing 100 parts by mass of vinyl chloride resin (manufactured by Shin-Etsu Chemical Co., Ltd., TK-1300 (average degree of polymerization 1300)), 50 parts by mass of diisononyl phthalate (plasticizer), 10 parts by mass of calcium carbonate (filler), 3 parts by mass of epoxidized soybean oil (epoxy compound), 2 parts by mass of Ba-Zn-based stabilizer (manufactured by ADEKA Corporation, AC-255), and further, as amine resistance imparting agents, the following compounds No. 1, No. 2, No. 4, No. 5, No. 6, and No. 7 in the amounts (parts by mass) shown in Tables 1 and 2.

[0149] Next, a sheet was produced by powder slush molding. Specifically, the obtained vinyl chloride resin composition was heated in a gear oven at 130°C for 90 minutes to dry it up. The dried compound was sprinkled onto a textured mold heated to a surface temperature of 250°C and left to stand for 15 seconds to melt. After shaking off the excess compound, the mold was placed in an oven set to 250°C and left to stand for 45 seconds. The mold was removed from the oven, cooled with water, and a 1 mm thick vinyl chloride resin sheet was obtained.

[0150] A laminate was created by backing the obtained polyvinyl chloride resin sheet with foamed polyurethane to a thickness of 10 mm. The following <amine resistance test> was performed using the obtained laminate. In addition, a sample without the amine resistance imparting agent was evaluated in the same manner as the example as Comparative Example 1. Furthermore, a sample with 0.1 parts by mass of zinc stearate as a zinc compound instead of the amine resistance imparting agent was evaluated in the same manner as the example as Comparative Example 2, and a sample with 0.1 parts by mass of zinc benzoate was evaluated in the same manner as the example as Comparative Example 3.

[0151] <Amine resistance test> First, the yellowness of the obtained polyvinyl chloride resin sheet was measured. Next, the resulting laminate was placed in an 80°C oven for 8 weeks, after which the polyvinyl chloride resin sheet and foamed polyurethane were separated, and the yellowness of the polyvinyl chloride resin sheet was measured to determine the color difference (ΔE). A smaller value indicates better amine resistance. The yellowness was measured in accordance with JIS K7373.

[0152] Amine resistance imparting agent TIFF0007870732000007.tif116163TIFF0007870732000008.tif80163

[0153] [Table 1]

[0154] [Table 2]

[0155] The results shown in Tables 1 and 2 clearly demonstrate that the amine-resistant agent of the present invention is excellent at suppressing amine-induced discoloration of vinyl chloride resins.

Claims

1. An amine-resistant agent for vinyl chloride resins, characterized by containing one or more zinc dithiocarbamate compounds represented by the following general formula (1). In general formula (1), R １ and R ２ Each independently represents an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, or an arylalkyl group having 7 to 20 carbon atoms, R １ and R ２ These atoms may be linked together to form a ring with the nitrogen atom to which they are bonded.

2. The amine-resistant agent for vinyl chloride resins according to claim 1, wherein the vinyl chloride resin is a vinyl chloride resin for automotive interior materials.

3. The amine-resistant agent for vinyl chloride resin according to claim 2, wherein the vinyl chloride resin for automotive interior materials is a raw material resin for a vinyl chloride resin molded body used in automotive interior materials, which consists of a laminate of a vinyl chloride resin molded body and a polyurethane foam molded body.

4. A stabilizer composition for vinyl chloride resins, characterized in that it contains an amine-resisting agent for vinyl chloride resins according to any one of claims 1 to 3, and at least one selected from the group consisting of a zinc salt of an organic acid other than dithiocarbamic acid, a barium salt of an organic acid, and a β-diketone compound, for use in a laminate of a vinyl chloride resin molded article and a polyurethane foam.

5. A vinyl chloride resin composition for use in a laminate of a vinyl chloride resin molded article and a polyurethane foam, comprising a vinyl chloride resin, an amine-resistant agent for vinyl chloride resins according to any one of claims 1 to 3, and at least one selected from the group consisting of a zinc salt of an organic acid other than dithiocarbamic acid, a barium salt of an organic acid, and a β-diketone compound.

6. The vinyl chloride resin composition according to claim 5, wherein the content of the amine-resistant agent for vinyl chloride resin is 0.005 to 3.0 parts by mass per 100 parts by mass of the vinyl chloride resin.

7. The vinyl chloride resin composition according to claim 5, which is for powder molding.

8. A laminate comprising a vinyl chloride resin molded article and a polyurethane foam, wherein the vinyl chloride resin molded article is obtained from the vinyl chloride resin composition described in claim 5.

9. An automotive interior material characterized by comprising the laminate described in claim 8.

10. A method for suppressing discoloration of an automotive interior material comprising a laminate of a vinyl chloride resin molded article and a polyurethane foam molded article, characterized in that the amine-resistant agent for vinyl chloride resins described in any one of claims 1 to 3 is blended into the vinyl chloride resin, which is the raw material resin for the vinyl chloride resin molded article.

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