JPS6312101B2 - - Google Patents

Description

[Detailed description of the invention]

In the present invention, a monoalkyltin hydroxyalkyl mercaptide/sulfide and an alkali metal compound or an alkaline earth metal compound are added together to a chlorine-containing resin, and the synergistic effect thereof stabilizes the resin against heat. The present invention relates to a chlorine-containing resin composition. Halogen-containing resins tend to decompose due to heat during hot molding, resulting in coloring and, as a result, deterioration of the mechanical properties of the molded product. To prevent these, various additives are used, such as metal soaps such as cadmium, lead, calcium, barium, and zinc, as well as organic tin compounds, organic phosphites, epoxy compounds, ultraviolet absorbers, and antioxidants. At present, they are added singly or in combination of several kinds and heat-molded. Among organotin compounds, in particular halogen-containing compounds stabilized with organotin sulfur-containing compounds, such as organotin mercaptides, organotin mercapto salts, organotin mercapto acid esters, organotin mercapto alcohol esters, organothiostannic acids, etc. The resin composition is
Although it has good transparency and initial thermal stability, it tends to adhere to the metal surface of the molding machine during molding, and as a result, it is forced to use a general lubricant, resulting in a loss of transparency and initial thermal stability. Furthermore, it had bad odor, poor photostability, and was expensive. Techniques for improving these drawbacks have been disclosed. For example, Japanese Patent Application Laid-Open No. 52-130848 (U.S. Patent No.
No. 4043957) describes a halogenated vinyl resin stabilized by adding a stabilizer containing a monoalkyltin alkyl mercaptide, a mercapto alcohol, a dialkyltin sulfide, and an inert diluent to the halogenated vinyl resin. There is. Japanese Patent Application Publication No. 53-34847 (U.S. Patent No. 3764571)
No.) includes organic overbase complexes of organic tin mercapto acids, organic tin mercapto acid esters, organic tin sulfides, organic thiostannic acids, etc., alkaline earth metal oxides or hydroxides, and alkali metals or alkaline earth metal bases. This document describes a stabilizer for halogen-containing resins that is used in combination with a metal compound selected from the group consisting of: Japanese Unexamined Patent Publication No. 135939 (US Pat. No. 135939)
No. 4118371) describes the use of organotin mercaptoalkanol ester sulfides and polysulfides as stabilizers for halogen-containing resins.
Further, JP-A-52-38556 describes the use of an organic tin hydroxyalkyl mercaptan salt and calcium stearate in combination to stabilize vinyl chloride resin. However, even if the above-mentioned stabilizers were used, sufficient effects could not be achieved to obtain thermal stability, particularly initial thermal stability, and excellent processability. As a result of various studies, the inventors of the present invention found that chlorine-containing resin has the general formula a.

[Formula] and/or

[Formula] (In the formula, R represents an alkyl group having 1 to 12 carbon atoms, and R' represents an alkyl group having 8 to 18 carbon atoms.) A monoalkyltin hydroxyalkyl mercaptide sulfide, and b an alkali. selected from metal or alkaline earth metal maleates, maleate ester salts, thiocarboxylate salts, oxides, hydroxides, carbonates, carbonates, substituted carbonates, organic overbase complexes, and mixtures thereof A chlorine-containing resin composition formed in combination with at least one metal compound has better initial thermal stability, sustained thermal stability, and processability than the organotin-sulfur stabilizer resin composition. The present invention was completed based on the discovery that To describe the present invention in more detail, monoalkyltin hydroxyalkyl mercaptide sulfide represented by the above general formula

[Formula] In the group, the number of carbon atoms in R′ is 8 to 18, but if the number of carbon atoms is 8
If the number of carbon atoms is less than 18, it is undesirable because it is highly volatile and has a strong odor.If the number of carbon atoms is more than 18, it is not preferred because the thermal stabilization effect is poor. To give a specific example of the group,

【formula】

【formula】

【formula】

【formula】

【formula】

[Formula] etc. Specific examples of monoalkyltin hydroxyalkyl mercaptide/sulfide used in the present invention include monomethyltin monohydroxydecyl mercaptide/sulfide, monomethyltin monohydroxydodecyl mercaptide/sulfide, and monomethyltin monohydroxytetradecyl. Mercaptide/sulfide, monomethyltin monohydroxyhexadecyl mercaptide/sulfide, monomethyltin monohydroxyheptadecyl mercaptide/sulfide, monomethyltin monohydroxyoctadecyl mercaptide/sulfide, monomethyltin monohydroxyeicosyl mercaptide・Sulfide, bis[monomethyltin bis(monohydroxydecyl mercaptide)] sulfide, bis[monomethyltin bis(monohydroxydodecyl mercaptide)] sulfide bis[monomethyltin bis(monohydroxytetradecyl mercaptide)] sulfide, Bis[monomethyltin bis(monohydroxyhexadecyl mercaptide)] sulfide, Bis[monomethyltin bis(monohydroxyheptadecyl mercaptide)] sulfide, Bis[monomethyltin bis(monohydroxytadecyl mercaptide)] sulfide , Bis[monomethyltin bis(monohydroxyeicosyl mercaptide)] sulfide, mono-n-butyltin monohydroxydecyl mercaptide/sulfide mono-n-butyltin monohydroxydodecyl mercaptide/sulfide, mono- n-Butyltin monohydroxytetradecyl mercaptide sulfide, mono-n-butyltin monohydroxyhexadecyl mercaptide sulfide, mono-n-butyltin monohydroxyheptadecyl mercaptide sulfide, mono-n- Butyltin monohydroxyoctadecyl mercaptide sulfide, mono-n-butyltin monohydroxyeicosyl mercaptide sulfide, bis[mono-n-butyltin bis(monohydroxydecyl mercaptide)] sulfide bis[mono-n -Butyltin bis(monohydroxydodecyl mercaptide)] sulfide, bis[mono-n-butyltin bis(monohydroxytetradecyl mercaptide)] sulfide, bis[mono-n-butyltin bis(monohydroxyhexadecyl) mercaptide)] sulfide, bis[mono-n-butyltin bis (monohydroxyheptadecyl mercaptide)] sulfide, bis[mono-n-butyltin bis (monohydroxyoctadecyl mercaptide)] sulfide, bis Mono-n-butyltin bis(monohydroxyeicosyl mercaptide) sulfide, monohexyltin monohydroxydecyl mercaptide sulfide, monohexyltin monohydroxydodecyl mercaptide sulfide, monohexyltin monohydroxytetradecyl mercaptide・Sulfide, monohexyltin monohydroxyhexadecyl mercaptide sulfide, monohexyltin monohydroxyheptadecyl mercaptide sulfide, monohexyltin monohydroxyoctadecyl mercaptide sulfide, monohexyltin monohydroxyeicosyl mercaptide sulfide, Bis[monohexyltin bis(monohydroxydecyl mercaptide)] sulfide, bis[monohexyltin bis(monohydroxydodecyl mercaptide)] sulfide, bis[monohexyltin bis(monohydroxytetradecyl mercaptide)] sulfide, bis [Monohexyltin bis(monohydroxyhexadecyl mercaptide)] sulfide, bis[monohexyltin bis(monohydroxyheptadecyl mercaptide)] sulfide, bis[monohexyltin bis(monohydroxyoctadecyl mercaptide)] sulfide, bis [Monohexyltin bis(monohydroxyeicosyl mercaptide)] sulfide, mono-n-octyltin monohydroxydodecyl mercaptide sulfide, mono-n-octyltin monohydroxytetradecyl mercaptide sulfide, mono-n -Octyltin monohydroxyhexadecyl mercaptide sulfide, mono-n-octyltin monohydroxyoctadecyl mercaptide sulfide, mono-n-octyltin monohydroxyeicosyl mercaptide sulfide, bis[mono-n- Octyltin bis(monohydroxydodecyl mercaptide)] sulfide, bis[mono-n-octyltin bis(monohydroxytetradodecyl mercaptide)] sulfide, bis[mono-n-octyltin bis(monohydroxyhexadecyl mercaptide) captide)] sulfide, bis[mono-n-octyltin bis(monohydroxyoctadecyl mercaptide)] sulfide, mono-dodecyltin monohydroxydodecyl mercaptide sulfide, mono-dodecyltin monohydroxytetradecyl mercaptide・Sulfide, mono-dodecyltin monohydroxyhexadecyl mercaptide ・Sulfide, bis[mono-dodecyltin bis(monohydroxydecyl mercaptide)] sulfide, bis[mono-dodecyltin bis(monohydroxydodecyl mercaptide) ] sulfide, bis[mono-dodecyltin bis(monohydroxytetradecyl mercaptide)] sulfide, bis[mono-dodecyltin bis(monohydroxyhexadecyl mercaptide)] sulfide, and mixtures thereof. Preferably, monomethyltin monohydroxydodecyl mercaptide sulfide, monomethyltin monohydroxytetradecyl mercaptide sulfide, monomethyltin monohydroxyhexadecyl mercaptide sulfide, bis[monomethyltin bis(monohydroxydodecyl mercaptide) )] sulfide bis[monomethyltin bis(monohydroxytetradecyl mercaptide)] sulfide, mono-n-butyltin monohydroxydodecyl mercaptide sulfide, mono-n-butyltin monohydroxytetradecyl mercaptide sulfide, Mono-n-butyltin monohydroxyhexadecyl mercaptide sulfide, bis[mono-n-butyltin bis(monohydroxydodecyl mercaptide)] sulfide, bis[mono-n-butyltin bis(monohydroxyhexadecyl) mercaptide)] sulfide, monohexyltin monohydroxydodecyl mercaptide sulfide, monohexyltin monohydroxytetradecyl mercaptide sulfide, monohexyltin monohydroxyhexadecyl mercaptide sulfide, bis[monohexyltin bis(monohydroxy dodecyl mercaptide)] sulfide, bis[monohexyltin bis(monohydroxytetradecyl mercaptide)] sulfide, mono-n-octyltin monohydroxydodecyl mercaptide sulfide, mono-n-octyltin monohydroxytetradecyl Mercaptide sulfide, mono-n-octyltin monohydroxyhexadecyl mercaptide sulfide, bis[mono-n-octyltin bis(monohydroxydodecyl mercaptide)] sulfide, bis[mono-n-octyltin Bis(monohydroxytetradecyl mercaptide)] sulfide, bis[mono-n-octyltin bis(monohydroxyhexadecyl mercaptide)] sulfide, and mixtures thereof, and the like are particularly preferred. -n-butyltin monohydroxydodecyl mercaptide sulfide, mono-n-butyltin monohydroxytetradecyl mercaptide sulfide, bis[mono-n-butyltin bis(monohydroxydodecyl mercaptide)] sulfide, Bis[mono-n-butyltin bis(monohydroxytetradecyl mercaptide)] sulfide, monohexyltin monohydroxydodecyl mercaptide sulfide, monohexyltin monohydroxytetradecyl mercaptide sulfide, bis[monohexyltin bis( monohydroxydecyl mercaptide)] sulfide, bis[monohexyltin bis(monohydroxytetradecyl mercaptide)] sulfide, mono-n-octyltin monohydroxydodecyl mercaptide sulfide, mono-n-octyltin monohydroxy Tetradecyl mercaptide sulfide, bis[mono-n-octyltin bis(monohydroxydodecyl mercaptide)] sulfide, bis[mono-n-octyltin bis(monohydroxytetradecyl mercaptide)] sulfide, and Mixtures of these can be mentioned. The alkali metal or alkaline earth metal maleates, maleate ester salts, thiocarboxylate salts, oxides, hydroxides, carbonates, carbonates, substituted carbonates, and organic overbase complexes used in the present invention will be described in detail. Preferred examples of alkali metals or alkaline earth metals include lithium, sodium, potassium, magnesium, calcium, strontium, barium, and zinc. Particularly preferred examples include magnesium,
Calcium and barium. Examples of maleate residues constituting maleate salts of alkali metals or alkaline earth metals include methoxymaleoyloxy, butoxymaleoyloxy, octyloxymaleoyloxy, isooctyloxymaleoyloxy, and 2-ethylhexyl. oxymaleoyloxy, dodecyloxymaleoyloxy, tridecyloxymaleoyloxy, octadecyloxymaleoyloxy, octadecenyloxymaleoyloxy, cyclohexyloxymaleoyloxy, benzyloxymaleoyloxy, methoxyethyloxymaleoyloxy oxy, butoxyethyloxymaleoyloxy, phenoxyethyloxymaleoyloxy, phenoxyethyloxymaleoyloxy, methoxybutyloxymaleoyloxy, 3,6-dioxadecyloxymaleoyloxy, [ethylenedioxy・Bis(maleoyloxy)]1/2, [tetramethylenedioxy bis(maleoyloxy)]1/2, etc. Examples of alkali metal or alkaline earth metal maleates and maleate ester salts include:
Bis(monooctadecyloxymaleoyloxy)magnesium, maleoyldioxymagnesium, bis(monooctadecyloxymaleoyloxy)calcium, bis(monooctadecyloxymaleoyloxy)barium, maleoyldioxybarium, bis(monooctadecyloxy) Zinc (maleoyloxy), zinc maleoyldioxy, etc. Examples of thiocarboxylic acid residues constituting thiocarboxylate salts of alkali metals or alkaline earth metals include acetylthio, propionylthio, butyrylthio, hexanoylthio, octanoylthio, 2-ethylhexanoylthio, decanoylthio, dodecanoylthio, and hexadecanoylthio. ,
Octadecanoylthio, docosanoylthio, octadecenoylthio, ricinoleylthio, acryloylthio, methacryloylthio, crotonoylthio, acetoacetylthio, benzoylthio, (oxalyldithio) 1/2, (malonyldithio) 1/2, (succinyldithio) 1/ 2, (glutaryldithio) 1/2, (aziboyldithio) 1/2, (maleoyldithio) 1/2, (phthaloyldithio) 1/2, methoxymaleoylthio, butoxymaleoylthio, octyloxymaleoylthio, Isooctyloxymaleoylthio, 2-ethylhexyloxymaleoylthio, dodecyloxymaleoylthio, tridecyloxymaleoylthio, octadecyloxymaleoylthio, octadecenyloxymaleoylthio, cyclohexyloxymaleoylthio, benzyl Oxymaleoylthio, Methoxyethyloxymaleoylthio, Butoxyethyloxymaleoylthio, Phenoxyethyloxymaleoylthio, Methoxybutyloxymaleoylthio, 3,6-Dioxadecyloxymaleoylthio, [Ethylenedioxymaleoylthio] These include oxy-bis(maleoylthio)]1/2, [tetramethylenedioxy-bis(maleoylthio)]1/2, cyclohexyloxyphthaloylthio, octadecyloxyphthaloylthio, and octadecyloxyaziboylthio. Examples of thiocarboxylate salts of alkali metals or alkaline earth metals include bis(dodecanoylthio)magnesium, bis(octadecanoylthio)magnesium, bis(octadecenoylthio)magnesium, maleoylthiomagnesium, bis(dodecanoylthio)magnesium. Calcium, bis(octadecanoylthio)calcium, maleoyldithiocalcium, octadecanoylthiosodium, octadecanoylthiopotassium, bis(octadecanoylthio)strontium, bis(dodecanoylthio)barium, bis(octadecanoylthio) These include barium, maleoyldithiobarium, bis(dodecanoylthio)zinc, bis(octadecanoylthio)zinc and maleoyldithiozinc. Examples of the carbolic acid residues and substituted carbolic acid residues constituting the carbonates and substituted carbonates of alkali metals or alkaline earth metals include phenyloxy, methylphenyloxy, tert-butylphenyloxy, octylphenyloxy, and nonylphenyloxy. These include enyloxy, chlorophenyloxy, hydroxyphenyloxy, naphthyloxy, methoxyphenyloxy, 3-methyl-4-isopropylphenyloxy and tert-butyl-methoxyphenyloxy. Examples of alkali metal or alkaline earth metal carbonates and substituted carbonates include bis(phenyloxy)magnesium, bis(phenyloxy)calcium, bis(phenyloxy)barium, bis(octylphenyloxy)barium, bis(nonylphenyloxy) barium (enyloxy), etc. Examples of oxides, hydroxides or carbonates of alkali metals or alkaline earth metals include magnesium oxide, calcium oxide, barium oxide, magnesium hydroxide, calcium hydroxide, barium hydroxide, sodium carbonate and calcium carbonate. . For organic overbased complexes of alkali metals or alkaline earth metals, basic salts, superbased salts,
It is an oil-soluble metal salt commonly referred to as an overbased salt, a highly basic dispersant, etc., and is known as an oil additive. Regarding the manufacturing method of this organic overbase complex, US Pat.
No. 3242079; Special Publication No. 50842, Special Publication No. 1977-
Although it is described in No. 48161, the general manufacturing method is to use alcohol as a medium in an organic solvent to produce aliphatic acid salts, cycloaliphatic acid salts, and aromatic acid salts of metals using a direct method or metathesis method. Then, in the presence of excess metal oxide or hydroxide, carbon dioxide gas is blown into the mixture to form a carbonate, thereby producing an organic overbase complex with a high metal content. Although there are many unknowns about the chemical structure of this complex, it is clearly distinguished from maleate salts, maleate ester salts, thiocarboxylic acid metal salts, etc., which are widely used to stabilize chlorine-containing resins. In other words, the organic overbase complex has a basicity expressed as "the number of bases equivalent to the number of mg of caustic potash per gram of the sample", while the above maleate salts and maleate ester salts have a basicity of 0. It is a natural salt. Stated another way, an organic overbased complex is a metal complex that contains more metal than the chemical equivalent of the organic acid it contains, and the metal ratio is defined as the total weight of metal divided by the weight of metal equivalent to the organic acid. According to the formula, the metal ratio exceeds 1, and the maleate salt and maleate ester salt have a metal ratio of 1. Preferred metals for organic overbase complexes of alkali metals or alkaline earth metals include magnesium, calcium, and barium; examples of the organic overbase complexes include overbased magnesium sulfonate, overbased calcium sulfonate; , overbased substituted coal calcium, overbased barium sulfonate, overbased substituted barium carbonate, and the like. A specific example is ECA 5087.
(Exxon Chem), Bryton M 400 (Witoco
Chem), Lubrizol56, 58, 70, 74, 76, 78, 79,
2110 (Lubrizol), Lubrizol2105 (Lubrizol), O,
S, 40182 (Lubrizol), RARANOX 30 (Exxon
Chem), HITEC E 631 (Japan Cooper),
SULFOL Ba 30 N, MB, HB (Matsumura Petroleum Research Institute), Lubrizol 2106 (Lubrizol), etc. Among the alkali metal or alkaline earth metal compounds used in combination with the monoalkyltin hydroxyalkyl mercaptide/sulfide used in the present invention, preferred are maleate salts of the metals,
Maleate salts, oxides, hydroxides, carbonates, organic overbase complexes, etc. are mentioned, and maleate salts, maleate salts, hydroxides, organic overbase complexes, etc. of the metal are particularly preferred. be. In addition, there are no particular restrictions on the ratio of the monoalkyltin hydroxyalkyl mercaptide/sulfide and the metal compound, and the amount added to the chlorine-containing resin, and should be determined as appropriate depending on the purpose. According to research by the inventors, the weight ratio of monoalkyltin hydroxyalkyl mercaptide/sulfide to metal compound is preferably 1:1 to 1:10, and the amount added is 100 parts by weight of the chlorine-containing resin. On the other hand, 0.1 to 1 part by weight of monoalkyltin hydroxyalkyl mercaptide/sulfide and 1 to 3 parts by weight of the metal compound are optimal. If the amount of the metal compound is less than the same amount, the sustained thermal stability will be poor, and if the amount of the metal compound is more than 10 times the amount of the monoalkyltin hydroxyalkyl mercaptide/sulfide, the thermal stability will be poor. Since the chlorine-containing resin composition of the present invention has thermal stability and excellent processability due to a high degree of mutual effect,
Ideal for forming pipes, rain gutters, corrugated sheets, industrial boards, etc. that require high mechanical properties. The chlorine-containing resin composition of the present invention can be prepared by mixing the resin and the stabilizer using a known mixing method, for example, using a mixer such as a Henschel mixer, a super mixer, a kneader, a Banbury mixer, a ribbon blender, or a crusher. It can be obtained by Further, the chlorine-containing resin composition of the present invention can be molded into a desired molded product by known molding methods such as extrusion molding, injection molding, calendar molding, and blow molding. The chlorine-containing resin composition of the present invention may optionally include:
For example, metal soaps, epoxy compounds, organic phosphites, polyhydric alcohols, ultraviolet absorbers, pigments,
It can contain plasticizers, foaming agents, antistatic agents, lubricants, flame retardants, processing aids, fluorescent agents, antifogging agents, and the like. Examples of metal soaps are aluminum laurate, aluminum stearate, aluminum ricinoleate, tin octylate, tin stearate and tin ricinoleate, sodium stearate, zinc stearate, calcium stearate, and the like. Examples of epoxy compounds include epoxidized soybean oil, epoxidized linseed oil, epoxidized castor oil,
These include epoxidized flower oil, epoxidized linseed oil fatty acid butyl ester, epoxy octyl stearate, and epoxidized polybutadiene. Examples of organic phosphites include triphenyl phosphite, diphenyl hydrogen phosphite, monophenyl dihydrogen phosphite, tris(nonylphenyl) phosphite,
2-tert-butyl-α-(3-tert-butyl-4
-Hydroxyphenyl)-p-cumenylbis(p
-nonylphenyl) phosphite, hydrogenated 4,4'-
These include isopropylidenedienol phosphite, bis(nonylphenyl)hydrodiene phosphite, and (stearyl)pentaerythrityl diphosphite. Examples of polyhydric alcohols include 1,3-butanediol, 1,4-butanediol, triethylene glycol, dipropylene glycol, polypropylene glycol, trimethylolmethane, trimethylolpropane, pentaerythritol, dipentaerythritol, mannitol, and sorbitol. and partial esters of these polyhydric alcohols and carboxylic acids. Examples of ultraviolet absorbers include benzophenone-based, benzotriazole-based, salicylate-based and substituted acrylonitrile-based ultraviolet absorbers. Examples of pigments include titanium oxide, carbon black and red iron. Examples of plasticizers include phthalate esters, aliphatic dibasic acid esters, phosphoric esters, hydroxy polycarboxylic esters, fatty acid esters, polyhydric alcohol esters, epoxies, polyesters, and other alkyl sulfones. These include acid esters and chlorinated paraffins, and can be used in appropriate amounts depending on the purpose. Examples of lubricants include hydrocarbon wax, higher alcohol, higher fatty acid, higher fatty acid ester, rice bran wax, montan wax, and amide type lubricant. Examples of chlorine-containing resins used in the present invention include vinyl chloride resin, vinylidene chloride resin, chlorinated vinyl chloride resin, chlorinated ethylene resin, chlorinated propylene resin, chlorinated rubber, hydrochloric acid rubber, and vinyl chloride-vinyl acetate copolymer resin. , vinyl chloride-ethylene copolymer resin, vinyl chloride-propylene copolymer resin, vinyl chloride-styrene copolymer resin, vinyl chloride-pyrinidene chloride copolymer resin, vinyl chloride-butadiene copolymer resin, vinyl chloride-maleic acid copolymer resin , vinyl chloride-methacrylonitrile copolymer resin, vinyl chloride-α-methylstyrene copolymer resin, vinyl chloride acrylic acid copolymer resin, vinyl chloride-vinyl alcohol copolymer resin, vinyl chloride-
Chlorinated ethylene copolymer resin, vinyl chloride-styrene-acrylonitrile copolymer resin, vinyl chloride-
Styrene-butadiene copolymer resin, vinyl chloride
Styrene-vinylidene chloride copolymer resin, vinyl chloride-vinylidene chloride-acrylonitrile copolymer resin, vinyl chloride-vinyl acetate-styrene copolymer resin, vinyl chloride-acrylonitrile-butadiene-styrene copolymer resin, vinyl chloride-methyl methacrylate-butadiene- Styrene copolymer resin, etc. Furthermore, vinylidene chloride resin, chlorinated vinyl chloride resin, chlorinated ethylene resin, chlorinated propylene resin, vinyl acetate resin, butadiene resin, isobutylene resin, ethylene resin, propylene resin,
Styrene resin, acrylic resin, urethane resin, ethylene-vinyl acetate copolymer resin, ethylene-propylene copolymer resin, styrene-acrylonitrile copolymer resin, acrylonitrile-butadiene-styrene copolymer resin, and methacrylonitrile-butadiene-styrene copolymer resin and vinyl chloride resin. Next, the present invention will be explained with examples. Parts in the examples mean parts by weight, and the stabilizers used in the examples are shown in Table 1, and their code numbers are shown in Table 2 onwards.

【table】

【table】

【table】

[Table] Example 1 Vinyl chloride resin Geon103EP [manufactured by Nippon Zeon Co., Ltd.]
After mixing 100 parts of the stabilizer shown in Table 2, kneading with a test roll at 160℃ for 5 minutes to make a sheet with a thickness of 0.5 mm, and cutting this sheet into a size of 3 cm x 6 cm, The sample was placed in a gear type aging tester that had been heated to 195°C and taken out at regular intervals for a thermal stability test. The results are shown in Table-2. The degree of coloration of the sheet was expressed by the following numerical value and was used as a standard for evaluating thermal stability. 0 Colorless 1 Light yellow 2 Yellow 3 Light brown 4 Brown 5 Black

【table】

【table】

[Table] Example 2 Vinyl chloride resin Geon103EP-8 [Nippon Zeon Co., Ltd.]
] 100 parts, calcium stearate 2.0 parts -
After mixing each of the stabilizers shown in Example 3, the mixture was kneaded for 4 minutes using a test roll pre-adjusted to 170°C to prepare a sheet piece in the same manner as in Example 1.
The sample was placed in a gear type aging tester heated to 210°C and operated in the same manner as in Example 1 for evaluation.

【table】

【table】

Claims (1)

[Scope of Claims] 1 A chlorine-containing resin having a general formula [Formula] and/or [Formula] (wherein R represents an alkyl group having 1 to 12 carbon atoms, and R' represents an alkyl group having 8 to 18 carbon atoms monoalkyltin hydroxyalkyl mercaptide/sulfide represented by (a) and (b) maleate, maleate ester salt, thiocarboxylate, oxide, hydroxide, carbonate of an alkali metal or alkaline earth metal. , a chlorine-containing resin composition comprising at least one metal compound selected from carbonates, substituted carbonates, organic overbase complexes, and mixtures thereof. 2. The chlorine-containing resin composition according to claim 1, wherein R in the general formulas [Formula] and [Formula] is an alkyl group having 4 to 8 carbon atoms. 3. The chlorine-containing resin composition according to claim 1 or 2, wherein the metal compound is an alkali metal or alkaline earth metal maleate, maleate ester salt, hydroxide, or organic overbase complex. . 4 The chlorine-containing resin according to claim 1, 2, or 3, in which 0.1 to 1.0 parts by weight of monoalkyltin hydroxyalkyl mercaptide sulfide is used for 100 parts by weight of the chlorine-containing resin. Resin composition.