JP2003040614A - Surface-treated hydrotalcite and polyvinyl chloride resin composition containing it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a surface-treated hydrotalcite group able to improve heat stability of a polyvinyl chloride resin by mixing it in the resin as a stabilizer, to provide method for producing the surface-treated hydrotalcite group and to provide the polyvinyl chloride resin compound containing it and superior in heat stability. SOLUTION: The hydrotalcite group is surface-treated by a alkanolamine group. The polyvinyl chloride resin compound contains hydrotalcite of 0.1-20 pts.wt. per vinyl chloride polymer 100 pts.wt. The method for producing the surface-treated hydrotalcite group has the characteristics of mixing the hydrotalcite group with the alkanolamine group.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a surface-treated hydrotalcite, a method for producing the same, and a vinyl chloride resin composition containing the surface-treated hydrotalcite and having excellent thermal stability.

[0002]

2. Description of the Related Art Vinyl chloride polymers are excellent in processability, colorability, printability, transparency, strength and the like.
Depending on the soft, semi-rigid or hard resin, it is widely used in various fields such as films, sheets, tubes, hoses, decorative boards, building materials, wire coatings, pipes, joints, parts for automobiles and electric products.

However, vinyl chloride-based polymers have a difficulty in stability to heat and light, and are liable to be decomposed mainly due to dehydrochlorination. Especially, when heat-melted and molded, heat treatment is performed. The decomposition may cause deterioration of the mechanical properties of the obtained molded product, coloration, and the like, which may significantly impair the product value. In addition, various molded articles obtained are also susceptible to deterioration or decomposition over time due to heat or light.

Therefore, in order to solve such problems of vinyl chloride polymers, conventionally, various stabilizers have been blended with vinyl chloride polymers to suppress thermal decomposition during molding. Has been done. As such stabilizers, metal salts of organic acids such as lead, cadmium, tin, zinc, calcium and barium have been generally used. However, in recent years, some of these stabilizers are effective as stabilizers, but due to their toxicity, the use thereof is almost prohibited, and some of them are relatively less toxic and inexpensive. However, it has problems such as insufficient effect.

Thus, there is a strong demand for effective stabilizers to replace these, and recently, for example, JP-A-57-80444, JP-A-60-104141, and JP-A-61- Japanese Patent No. 265347 and Japanese Patent Laid-Open No. 3-2
As described in JP-A-34748, JP-A-7-126465, JP-A-10-219055, and the like, hydrotalcites are blended with a vinyl chloride polymer as a stabilizer, and its thermal stability is improved. Have been proposed to improve. However, the conventionally known hydrotalcites cannot sufficiently improve the thermal stability of the vinyl chloride polymer, and there is still a strong demand for new effective stabilizers.

[0006]

DISCLOSURE OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems in the conventional stabilizers of vinyl chloride polymers as described above. By adding it to a vinyl chloride polymer as an agent, the surface-treated hydrotalcites capable of remarkably improving the thermal stability thereof, a method for producing such surface-treated hydrotalcites, and such a An object of the present invention is to provide a vinyl chloride resin composition containing surface-treated hydrotalcites and having excellent thermal stability.

[0007]

According to the present invention, there is provided hydrotalcites surface-treated with alkanolamines.

Further, according to the present invention, there is provided a vinyl chloride resin composition comprising 0.1 to 20 parts by weight of the above hydrotalcites based on 100 parts by weight of the vinyl chloride polymer. To be done.

Further, according to the present invention, there is provided a method for producing surface-treated hydrotalcites, which comprises mixing hydrotalcites and alkanolamines.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The surface-treated hydrotalcites according to the present invention are obtained by surface-treating hydrotalcites with alkanolamines.

In the present invention, the hydrotalcites are preferably represented by the general formula (I) M ²⁺ _1-X M ³⁺ _X (OH) _{2 An} ^- _{X /} n.mH ₂ O (wherein M is ²⁺ is Mg ²⁺ , Zn ²⁺ , Ca ²⁺ , Fe ²⁺ , Mn
²⁺ , Co ²⁺ , Ni ²⁺ and Cu ^{2+ represent} at least one divalent metal ion, M ³⁺ is Al ³⁺ , Fe ³⁺ ,
At least one trivalent metal ion selected from Cr ³⁺ and Co ³⁺ is shown, A ⁿ⁻ is an n-valent anion, and x is 0.
<X ≦ 1/3, and m is 0 ≦ m ≦ 2. ) Is a nonstoichiometric compound.

[0012] In the general formula (I), specific examples of A ^n- are, for _{^{example, OH -, CO 3 2-,}} SO 4 2-, N
Examples thereof include O ₃ ⁻ , Cl ⁻ , F ⁻ , Br ⁻ , Fe (CN) ₆ ³⁻ , acetate ion, oxalate ion, and salicylate ion, but are not limited thereto.

Particularly in the present invention, among the hydrotalcites represented by the above general formula (I), M
²⁺ is at least one divalent metal ion selected from Mg ²⁺ and Zn ²⁺ , and M ³⁺ is preferably Al ³⁺ . That is, as the hydrotalcites preferably used in the present invention, the general formula (II) M ²⁺ _1-X Al ³⁺ _X (OH) _{2 An} ^- _{X / n} · mH ₂ O (wherein M ²⁺ Represents at least one divalent metal ion selected from Mg ²⁺ and Zn ²⁺ , A ⁿ⁻ represents an n-valent anion, x is a number in the range of 0 <x ≦ 1/3, and m Is 0
It is a number in the range of ≦ m ≦ 2. ). A ^n- is OH
^- and those comprising CO ₃ ^2- are preferred.

Such hydrotalcites may be natural products or synthetic products. Examples of the synthetic products are commercially available "Alcamizer" (manufactured by Kyowa Chemical Industry Co., Ltd.).
Is preferably used.

The surface-treated hydrotalcites according to the present invention are surface-treated with alkanolamines, and the alkanolamines include ethanolamines such as monoethanolamine, diethanolamine or triethanolamine. , N-propanolamine, di-n-propanolamine or tri-n-
N-Propanolamines such as propanolamine, isopropanolamines such as monoisopropanolamine, diisopropanolamine or triisopropanolamine are used, and among them ethanolamines such as monoethanolamine, diethanolamine or triethanolamine Classes are preferably used. According to the present invention, triethanolamine is particularly preferably used.

The surface-treated hydrotalcites according to the present invention can be preferably obtained by mixing and stirring hydrotalcites and alkanolamines at room temperature in the absence of a solvent. If necessary, the hydrotalcites and the alkanolamines may be heated while being mixed and stirred. Before mixing the hydrotalcites and the alkanolamines, or after mixing,
Alternatively, it is preferable to grind (surface-treated) hydrotalcites before and after mixing by an appropriate means.

According to the present invention, the surface treatment amount of hydrotalcites with alkanolamines is usually in the range of 0.1 to 10% by weight based on the hydrotalcites. The surface treatment amount of hydrotalcites with alkanolamines was 0.
When it is less than 1% by weight, the effect of improving the thermal stability of the resulting resin composition during molding is insufficient even if it is added to the vinyl chloride polymer. On the other hand, when the surface treatment amount of the hydrotalcites with the alkanolamines is more than 10% by weight based on the hydrotalcites, the resulting resin composition is inferior in electric insulation property. Inconvenience occurs when used for coating and the like. In particular, according to the present invention, the surface treatment amount of hydrotalcites with alkanolamines is
It is preferably in the range of 0.2 to 5% by weight.

According to the present invention, the hydrotalcites are preferably surface-treated in advance with an appropriate surface-treating agent before the treatment with the alkanolamines. In this way, the hydrotalcites are surface-treated in advance and then treated with the alkanolamines, whereby the dispersibility in the resin can be improved and the processability of the obtained resin composition can be improved.

According to the present invention, as the surface treatment agent,
For example, higher fatty acids, higher fatty acid metal salts (metal soap), anionic surfactants, phosphoric acid esters, silane coupling agents, titanium coupling agents, coupling agents such as aluminum coupling agents can be mentioned.
Among them, higher fatty acids or higher fatty acid metal salts are preferably used.

Specific examples of the surface treatment agent include, for example,
Stearic acid, oleic acid, erucic acid, palmitic acid,
Higher fatty acids such as lauric acid, lithium salts of these higher fatty acids, metal salts such as sodium salts and potassium salts, sulfuric acid ester salts of higher alcohols such as stearyl alcohol and oleyl alcohol, sulfuric acid ester salts of polyethylene glycol ether, amide bond sulfuric acid ester salts Anionic surfactants such as ether-bonded sulfonates, ester-bonded sulfonates, amide-bonded alkylaryl sulfonates, ether-bonded alkylaryl sulfonates, mono- or diesters of orthophosphoric acid and oleyl alcohol, stearyl alcohol, or mixtures thereof. And
Phosphates such as acid type or alkali metal salt or amine salt thereof, silane cup such as vinylethoxysilane, γ-methacryloxypropyltrimethoxysilane, vinyltris (2-methoxyethoxy) silane, γ-aminopropyltrimethoxysilane Examples thereof include ring coupling agents, titanium coupling agents such as isopropyl triisostearoyl titanate, isopropyl tris (dioctyl pyrophosphate) titanate and isopropyl tridecylbenzenesulfonyl titanate, and alkali coupling agents such as acetoalkoxyaluminum diisopropylate.

Such a surface treating agent is 0.1 to 15% by weight, preferably 0.1 to 15% by weight, based on the hydrotalcites.
It is preferable to use the range of 0.5 to 5% by weight for surface treatment of hydrotalcites.

The method for surface-treating hydrotalcites with the above-mentioned surface-treating agent is not particularly limited, and any conventionally known method such as a wet method or a dry method can be used. . When the wet method is used, the surface treatment agent is added as a solution or emulsion to a slurry of hydrotalcites, and the mixture is stirred at 100% with stirring.
After sufficiently mixing while heating to a temperature of up to ℃, hydrotalcites may be filtered, washed with water, and dried.

On the other hand, when the dry method is used, the above-mentioned surface treatment agent may be added to the hydrotalcites as a solution or emulsion, and the mixture may be mixed with heating, if necessary, using a mixing device such as a Henschel mixer.

The resin composition according to the present invention contains 0.1 to 20 parts by weight of the above-mentioned surface-treated hydrotalcites based on 100 parts by weight of a vinyl chloride polymer.
When the blending ratio of the surface-treated hydrotalcites to the vinyl chloride-based polymer is less than 0.1 part by weight based on 100 parts by weight of the vinyl chloride-based polymer, the resulting vinyl chloride-based resin composition is Poor stability improvement effect.
However, when the blending ratio exceeds 20 parts by weight with respect to 100 parts by weight of the vinyl chloride polymer, the thermal stability of the resulting vinyl chloride resin composition may be rather deteriorated. Particularly, according to the present invention, the blending ratio of the surface treatment is such that the blending ratio to the vinyl chloride polymer is 10%.
The range of 0.1 to 10 parts by weight is preferable with respect to 0 parts by weight.

In the present invention, the vinyl chloride polymer is
Including a copolymer of vinyl chloride homopolymer and various comonomers, the production method thereof is also bulk polymerization, solution polymerization,
Suspension polymerization, emulsion polymerization, etc. are not particularly limited.

Therefore, as such a vinyl chloride polymer, for example, 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-acrylonitryl copolymer, vinyl chloride-butadiene copolymer, vinyl chloride-isoprene copolymer , Vinyl chloride-chlorinated propylene copolymer, vinyl chloride-vinylidene chloride-vinyl acetate terpolymer, vinyl chloride-
Examples thereof include a maleic acid ester copolymer, a vinyl chloride-methacrylic acid ester copolymer, a vinyl chloride-acrylonitrile copolymer, and a vinyl chloride-vinyl ether copolymer. Further, these mixtures are also used as a vinyl chloride polymer. Further, polyvinyl chloride, vinyl chloride copolymer, a mixture thereof and a non-vinyl chloride polymer, for example, acrylonitrile-styrene copolymer,
A mixture with an ethylene-vinyl acetate copolymer, an ethylene-ethyl (meth) acrylate copolymer, a polyester or the like is also used as the vinyl chloride polymer. In particular, in the present invention, as the vinyl chloride polymer, polyvinyl chloride is preferably used among the above-mentioned polymers.

In the present invention, when the resin composition is a so-called soft or semi-rigid vinyl chloride resin composition, it contains a conventionally known plasticizer. Examples of such plasticizers include phthalate plasticizers such as diheptyl phthalate, dioctyl phthalate and diisononyl phthalate, adipate plasticizers such as dioctyl adipate, diisononyl adipate, di (butyl diglycol) adipate, tricresyl phosphate. Examples thereof include, but are not limited to, phosphate-based plasticizers such as polyester-based plasticizers, chlorinated paraffin-based plasticizers, trimellitate-based plasticizers, pyromellitate-based plasticizers, and biphenyl tetracarboxylate-based plasticizers. Not something. Such a plasticizer is usually 10 to 150 parts by weight with respect to 100 parts by weight of polyvinyl chloride,
It is preferably used in the range of 20 to 100 parts by weight.

Thus, according to the present invention, when a plasticizer is added to polyvinyl chloride to obtain a soft or semi-hard vinyl chloride resin composition, 100 parts by weight of polyvinyl chloride is used. 1-15 surface treated hydrotalcites
It is preferable to blend in a range of parts by weight, especially 2 to 10
It is preferable to blend in the range of parts by weight. On the other hand, when a hard vinyl chloride resin composition is obtained without compounding polyvinyl chloride with a plasticizer, surface-treated hydrotalcites are added in an amount of 0.1 to 100 parts by weight of polyvinyl chloride.
It is preferable to blend in the range of 10 parts by weight, and especially, 0.
It is preferable to mix it in the range of 2 to 5 parts by weight.

Furthermore, according to the present invention, various additives conventionally known as stabilizers or additives for vinyl chloride polymers can be contained together with the vinyl chloride polymer.

As one of such additives, β-diketones can be mentioned. According to the present invention, the heat stability of the vinyl chloride resin composition can be further enhanced by using the β-diketones as a stabilizer together with the above-mentioned surface-treated hydrotalcites.

Examples of the β-diketones include dehydroacetic acid, dehydropropionyl acetic acid, cyclohexane-1,3-dione, dibenzoylmethane, benzoylacetone, palmitoylbenzoylmethane, stearoylbenzoylmethane, 2-acetylcyclohexanone,
2-benzoyl cyclohexanone, benzoyl acetyl methane, etc. can be mentioned.

According to the present invention, such β-diketones are usually added in an amount of 0.01 to 5 parts by weight, preferably 0.05 to 5 parts by weight, based on 100 parts by weight of the vinyl chloride polymer. It is compounded in the range of 2 parts by weight.

Further, another additive may be a lubricant. As this lubricant, for example, preferably,
Carboxylic acid metal salts, preferably higher fatty acid metal salts are used.

Specific examples of the carboxylic acid include, for example, caproic acid, caprylic acid, pelargonic acid, 2-ethylhexylic acid, capric acid, neodecanoic acid, undecylenic acid, lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid. Acid, 12-hydroxystearic acid, chlorostearic acid, 12-ketostearic acid, phenylstearic acid, ricinoleic acid, linoleic acid, linoleic acid, oleic acid, arachidic acid, behenic acid, erucic acid, brassic acid, etc., and coconut oil. Natural fatty acids such as fatty acids, tung oil fatty acids, soybean oil fatty acids, cottonseed oil fatty acids, benzoic acid, p-tertiary butyl benzoic acid, ethyl benzoic acid, isopropyl benzoic acid, toluic acid, xylyl acid, salicylic acid, 5-t-octyl salicylic acid, naphthenes. Acid, cyclohexanecarboxylic acid, etc. It can gel. Also,
Examples of the metal species for forming the metal salt include sodium, potassium, calcium, barium, magnesium, strontium, zinc, cadmium, tin, cesium, and aluminum. Above all,
Zinc stearate and calcium stearate are preferably used, but are not limited thereto.

Such a lubricant is a vinyl chloride polymer 1
It is usually blended in the range of 0.1 to 10 parts by weight with respect to 00 parts by weight. In particular, in the case of a soft or semi-hard vinyl chloride resin composition, the blending amount of the lubricant is polyvinyl chloride 1
The range of 0.01 to 5 parts by weight is preferable with respect to 00 parts by weight, and in the case of the hard vinyl chloride resin composition, the blending amount of the lubricant is 0.0 with respect to 100 parts by weight of polyvinyl chloride.
The range of 1 to 10 parts by weight is preferable. However, the most preferable amount of lubricant is 100% polyvinyl chloride for any of soft, semi-hard and hard vinyl chloride resin compositions.
It is in the range of 0.1 to 5 parts by weight with respect to parts by weight.

According to the present invention, the heat of a vinyl chloride resin composition obtained by using hydrotalcites, the β-diketone and the above-mentioned lubricant, particularly calcium or zinc salt of higher fatty acid such as stearic acid. The stability can be further improved.

When a plasticizer is added to polyvinyl chloride to form a soft vinyl chloride resin composition, the filler is not particularly added, but if necessary, for example, calcium carbonate, clay, silica, Calcium silicate, diatomaceous earth,
A filler such as carbon black may be added in an amount of 50 parts by weight or less, preferably 20 parts by weight or less, based on 100 parts by weight of polyvinyl chloride. The filler is not limited to those exemplified above.

However, when a hard vinyl chloride resin composition is prepared without blending a plasticizer with polyvinyl chloride, it is preferable to blend a filler together with the above lubricant. Examples of the filler include calcium carbonate, clay, silica, calcium silicate, diatomaceous earth, carbon black and the like. The filler is not limited to those exemplified above. Such a filler is generally added in an amount of 0.1 to 100 parts by weight, preferably 1 to 80 parts by weight, based on 100 parts by weight of polyvinyl chloride.

The resin composition according to the present invention contains additives such as polyhydric alcohols, organic phosphites, phenol-based or sulfur-based antioxidants, hindered amines, and ultraviolet absorbers in appropriate amounts as additives other than the above. But it's okay.

Examples of the polyhydric alcohols include
Examples thereof include glycerin, trimethylolpropane, ditrimethylolpropane, pentaerythritol, dipentalithritol, bis (dipentaerythritol) adipate, tris (2-hydroxyethyl) isocyanurate, sorbitol, mannitol, inositol and the like.

Examples of the above-mentioned phenolic antioxidants include 2,6-di-t-butyl-p-cresol and 2,6
-Diphenyl-4-octadecyloxyphenol, stearyl (3,5-di-t-butyl-4-hydroxyphenyl) propionate, distearyl (3,5-di-t
-Butyl-4-hydroxybenzyl) phosphonate, thiodiethylenebis [(3,5-di-t-butyl-4-hydroxyphenyl) propionate], 4,4'-thiobis (6-t-butyl-m-cresol) , 2-octylthio-4,6-di (3,5-di-t-butyl-4-hydroxyphenoxy) -s-triazine, 2,2'-methylenebis (4-methyl-6-t-butylphenol), bis [3,3-bis (4-hydroxy-3-t-
Butylphenyl) butyric acid] glycol ester, 4,4′-butylidene bis (6-t-butyl-m
-Cresol), 2,2'-ethylidene bis (4,6-
Di-t-butylphenol), 1,1,3-tris (2
-Methyl-4-hydroxy-5-t-butylphenyl)
Butane, bis [2-t-butyl-4-methyl-6- (2
-Hydroxy-3-t-butyl-5-methylbenzyl)
Phenyl] terephthalate, 1,3,5-tris (2,
6-dimethyl-3-hydroxy-4-t-butylbenzyl) isocyanurate, 1,3,5-tris (3,5-
Di-t-butyl-4-hydroxybenzyl) isocyanurate, 1,3,5-tris (3,5-di-t-butyl-4-hydroxybenzyl) -2,4,6-trimethylbenzene, 1,3 , 5-Tris [(3,5-di-t-butyl-4-hydroxyphenyl) bropionyloxyethyl] isocyanurate, tetrakis [methylene-3-]
(3,5-di-t-butyl-4-hydroxyphenyl)
Propionate] methane, 2-t-butyl-4-methyl-6- (2-acryloyloxy-3-t-butyl-5
-Methylbenzyl) phenol, 3,9-bis [1,1
-Dimethyl-2-hydroxyethyl) -2,4,8,1
0-tetraoxaspiro [5.5] undecane-bis [β- (3-t-butyl-4-hydroxy-5-butylphenyl) propionate], triethylene glycol bis [β- (3-t-butyl-4] -Hydroxy-5-methylphenyl) propionate] and the like.

Examples of the above sulfur-based antioxidants include dialkylthiodipropionates such as dilauryl, dimyristyl, myristyl stearyl, and distearyl esters of thiodipropionic acid, pentaerythritol tetra (β-dodecylmercaptopropionate). And β-alkylmercaptopropionic acid esters of polyols such as

Further, as the above organic phosphite,
For example, triphenyl phosphite, tris (2,4-
Di-t-butylphenyl) phosphite, tris (nonylphenyl) phosphite, tris (dinonylphenyl) phosphite, tris (mono, dimixed nonylphenyl) phosphite, diphenylacid phosphite,
2,2'-methylenebis (4,6-di-t-butylphenyl) octylphosphite, diphenyldecylphosphite, phenyldiisodecylphosphite, tributylphosphite, tri (2-ethylhexyl) phosphite, tridecylphosphite, Trilauryl phosphite, dibutyl acid phosphite, dilauryl acid phosphite, trilauryl trithiophosphite, bis (neopentyl glycol) -1,4-cyclohexanedimethyl diphosphite, bis (2,4-di-
t-butylphenyl) pentaerythritol diphosphite, bis (2,6-di-t-butyl-4-methylphenyl) pentaerythritol diphosphite, distearyl pentaerythritol diphosphite, phenyl-
4,4 '- isopropylidenediphenol · pentaerythritol diphosphite, tetra (C ₁₂ ~ ₁₅ mixed alkyl) -4,4' - isopropylidene diphenyl diphosphite, hydrogenated-4,4 '- isopropylidenediphenol Polyphosphite, bis (octylphenyl)
Bis [4,4'-n-butylidene bis (2-t-butyl-5-methylphenol)]-1,6-hexanediol diphosphite, tetratridecyl 4,4'-butylidene bis (2-t-butyl-) 5-methylphenol) diphosphite, hexa (tridecyl) -1,1,
3-tris (2-methyl-5-t-butyl-4-hydroxyphenyl) butane triphosphite, 9,10-
Examples thereof include dihydro-9-oxa-10-phosphaphenanthrene-10-oxide.

Examples of the ultraviolet absorber include 2,
4-dihydroxybenzophenone, 2-hydroxy-4
-Methoxybenzophenone, 2-hydroxy-4-octoxybenzophenone, 5,5'-methylenebis (2-
2-hydroxybenzophenones such as (hydroxy-4-methoxybenzophenone), 2- (2-hydroxy-5)
-Methylphenyl) benzotriazole, 2- (2-hydroxy-5-t-octylphenyl) benzotriazole, 2- (2-hydroxy-3,5-di-t-butylphenyl) -5-chlorobenzotriazole, 2 -(2
-Hydroxy-3-t-butyl-5-methylphenyl)
-5-chlorobenzotriazole, 2- (2-hydroxy-3,5-dicumylphenyl) benzotriazole,
2,2'-methylenebis (4-t-octyl-6-benzotriazolyl) phenol, 2- (2-hydroxy-
2-t such as polyethylene glycol ester of 3-t-butyl-5-carboxyphenyl) benzotriazole
(2-hydroxyphenyl) benzotriazoles, phenyl salicylates, resorcinol monobenzoates, 2,4-di-t-butylphenyl-3,5-di-t
-Butyl-4-hydroxybenzoate, hexadecyl-3,5-di-t-butyl-4-hydroxybenzoate and other benzoates, 2-ethyl-2'-ethoxyoxanilide, 2-ethoxy-4'-dodecyloxyate Substituted oxanilides such as zanilide, ethyl-α-cyano-β,
β-diphenyl acrylate, methyl-2-cyano-3
Examples thereof include cyanoacrylates such as -methyl-3- (p-methoxyphenyl) acrylate.

The hindered amines include, for example, 2,2,6,6-tetramethyl-4-piperidyl stearate, 1,2,2,6,6-pentamethyl-4- and the like.
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, tetrakis (2,2,6,6-tetramethyl-4-piperidyl) butanetetra Carboxylate, tetrakis (1,2,2,6,6-pentamethyl-
4-piperidyl) butanetetracarboxylate, bis (1,2,2,6,6-pentamethyl-4-piperidyl) di (tridecyl) -1,2,3,4-butanetetracarboxylate, 3,9- Bis [1,1-dimethyl-2- {tris (2,2,6,6-tetramethyl-4-
Piperidyloxycarbonyloxy) butylcarbonyloxy} ethyl] -2,4,8,10-tetraoxaspiro [5.5] undecane, 3,9-bis [1,1-dimethyl-2- {tris (1,2 , 2,6,6-Pentamethyl-4-piperidyloxycarbonyloxy) butylcarbonyloxy} ethyl] -2,4,8,10-tetraoxaspiro [5.5] undecane, bis (1,2,2)
2,6,6-Pentamethyl-4-piperidyl) -2-butyl-2- (3,5-di-t-butyl-4-hydroxybenzyl) malonate, 1- (2-hydroxyethyl)
-2,2,6,6-Tetramethyl-4-piperidinol / diethyl succinate polycondensate, 1,6-bis (2,2,2
6,6-Tetraethyl-4-piperidylamino) hexane / dibromoethane polycondensate, 1,6-bis (2,2,2
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-triazin-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-triazin-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-triazin-6-ylamino] undecane, 1,6,11-tris [2,4-bis (N-butyl-N- (1,2,2,2
6,6-Pentamethyl-4-piperidyl) amino) -s
-Triazin-6-ylamino] undecane and the like can be mentioned.

Further, if necessary, in addition to the above, other additives such as a crosslinking agent, a foaming agent, an antistatic agent, an antifogging agent, a plate-out prevention agent may be added to the resin composition according to the present invention. A flame retardant, an antifogging agent, a fluorescent agent, a mildewproofing agent, a bactericide, a metal deactivator, a release agent, a pigment, a processing aid and the like can be added.

[0047]

The present invention will be described below with reference to examples.
The present invention is not limited to these examples.

Comparative Example 1 (Soft Vinyl Chloride Resin Composition) 100 parts by weight of polyvinyl chloride having an average degree of polymerization of 1300, 50 parts by weight of a plasticizer (dioctyl phthalate), 1 part by weight of zinc stearate, 0.1 part by weight of dibenzoylmethane. Part and Mg _0.67 Al _0.33 (O
H) ₂ (CO ₃ ) _0.167 · 0.47 2 parts by weight of hydrotalcites represented by H ₂ O (hereinafter referred to as untreated hydrotalcites) are added to prepare a mixture for a soft vinyl chloride resin composition. Prepared. This mixture was kneaded with an 8-inch roll at 170 ° C. for 5 minutes and then rolled into a sheet. This sheet was cut into a 4 cm × 3 cm test piece, and this was subjected to a gear oven test.

In the gear oven test, the time until the test piece became black was measured under the temperature condition of 180 ° C.

The above mixture was kneaded using an 8-inch roll at 170 ° C. for 5 minutes, rolled into a sheet, cut appropriately, and preheated at 180 ° C. for 5 minutes.
The test piece having a thickness of 1 mm was prepared by pressing under a pressure of 5 MPa for 5 minutes, and the initial colorability of press, the volume resistivity and the bloom property were examined.

The initial colorability of the press was measured by measuring the degree of yellowing (YI value) of the test piece with a color computer. That is, first, after calibrating the device using a white standard plate, the white standard plate was placed on the test piece as a background, and the YI value was measured. At this time, test piece 3
The point was arbitrarily selected, and the average value of the measured values at the three points was taken as the YI value of the test piece. The larger the degree of yellowing, the larger the YI value, and the smaller the degree of yellowing, the smaller the YI value. A YI value of less than 20 is "excellent",
A YI value of 20 or more and less than 30 was defined as “good”.

The volume resistivity was measured according to JIS K 6723.

The bloom property was examined as follows. That is, the test piece was allowed to stand in a thermo-hygrostat at a temperature of 50 ° C. and a humidity of 70% for 1 week, and then the ejected matter such as stickiness on the surface of the test piece was judged by touching with a finger. When there was almost no stickiness on the surface of the test piece, it was designated as "excellent", when there was some stickiness, it was designated as "good", and when it was markedly tacky, it was designated as "poor".
The results are shown in Table 1.

Comparative Example 2 (Soft Vinyl Chloride Resin Composition) 30 g of sodium stearate was added to 1 L of warm water at about 85 ° C. and stirred at about 85 ° C. to prepare an aqueous solution of sodium stearate.

Separately, Mg _0.67 Al _0.33 (OH) ₂ (CO
₃ ) 1 kg of hydrotalcites represented by _0.167 · 0.47 H ₂ O was added to 10 L of water and stirred to prepare a slurry, which was heated to about 85 ° C.

While maintaining the temperature of about 85 ° C., the above aqueous solution of sodium stearate was added to this hydrotalcite slurry and stirred to treat the hydrotalcite. Thereafter, the hydrotalcites were filtered, washed with water, heated and dried at a temperature of about 95 ° C. for one day and then pulverized to obtain hydrotalcites surface-treated with 3% by weight of sodium stearate. This is called sodium stearate-treated hydrotalcites.

A soft vinyl chloride resin composition was prepared in the same manner as in Comparative Example 1 except that 2 parts by weight of the sodium stearate-treated hydrotalcites were used in place of the untreated hydrotalcites. A mixture was prepared for. This mixture was kneaded in the same manner as in Comparative Example 1, a test piece was prepared, and similarly subjected to a gear oven test, and the initial colorability of press, volume resistivity and bloomability were examined. The results are shown in Table 1.

Example 1 (Soft vinyl chloride resin composition) Mg _0.67 Al _0.33 (O
H) ₂ (CO ₃ ) _0.167・ 0.47 To the hydrotalcites represented by H ₂ O, 0.5% by weight of triethanolamine was added, and the mixture was uniformly stirred and mixed using a Henschel mixer at room temperature. After that, it was pulverized to obtain hydrotalcites whose surface was treated with triethanolamine. This is called triethanolamine-treated hydrotalcites.

A soft vinyl chloride resin composition was prepared in the same manner as in Comparative Example 1 except that 2 parts by weight of the above-mentioned triethanolamine-treated hydrotalcites were used in place of the untreated hydrotalcites. A mixture was prepared for. This mixture was kneaded in the same manner as in Comparative Example 1, a test piece was prepared, and similarly subjected to a gear oven test, and the initial colorability of press, volume resistivity and bloomability were examined. The results are shown in Table 1.

Example 2 (Soft Vinyl Chloride Resin Composition) 0.5 wt% of triethanolamine was added to the sodium stearate-treated hydrotalcites prepared in Comparative Example 2,
The mixture was uniformly stirred and mixed using a Henschel mixer at room temperature and then pulverized to obtain triethanolamine-treated hydrotalcites. These are called sodium stearate / triethanolamine-treated hydrotalcites.

Soft chloride was prepared in the same manner as in Comparative Example 1 except that 2 parts by weight of sodium stearate / triethanolamine-treated hydrotalcites were used in place of the untreated hydrotalcites. A mixture for the vinyl resin composition was prepared. This mixture was used as Comparative Example 1
Kneading was performed in the same manner as above to prepare a test piece, which was similarly subjected to a gear oven test, and the initial colorability of press, volume resistivity and bloomability were examined. The results are shown in Table 1.

[0062]

[Table 1]

Comparative Example 3 (Hard Vinyl Chloride Resin Composition) 0.2 part by weight of calcium stearate, 0.5 part by weight of zinc stearate, 3 parts by weight of calcium carbonate and 100 parts by weight of polyvinyl chloride having an average degree of polymerization of 1000 Add 0.1 parts by weight of benzoylmethane and 0.5 parts by weight of untreated hydrotalcites,
A mixture was prepared for the rigid vinyl chloride resin composition. This mixture was kneaded in the same manner as in Comparative Example 1 to prepare a test piece, which was similarly subjected to the gear oven test and the initial colorability of the press was examined. The results are shown in Table 2.

Comparative Example 4 (Hard vinyl chloride resin composition) 100 parts by weight of polyvinyl chloride having an average degree of polymerization of 1000, 0.2 parts by weight of calcium stearate, 0.5 parts by weight of zinc stearate, 3 parts by weight of calcium carbonate, A mixture for a hard vinyl chloride resin composition was prepared by adding 0.1 part by weight of benzoylmethane and 0.5 part by weight of hydrotalcites treated with sodium stearate prepared in Comparative Example 2. This mixture was kneaded in the same manner as in Comparative Example 1 to prepare a test piece, which was similarly subjected to the gear oven test and the initial colorability of the press was examined. The results are shown in Table 2.

Example 3 (Hard vinyl chloride resin composition) 0.2 part by weight of calcium stearate, 0.5 part by weight of zinc stearate, 3 parts by weight of calcium carbonate, 100 parts by weight of polyvinyl chloride having an average degree of polymerization of 1000, A mixture for a hard vinyl chloride resin composition was prepared by adding 0.1 part by weight of benzoylmethane and 2 parts by weight of the triethanolamine-treated hydrotalcites prepared in Example 1. This mixture was kneaded in the same manner as in Comparative Example 1 to prepare a test piece, which was similarly subjected to the gear oven test and the initial colorability of the press was examined. The results are shown in Table 2.

Example 4 (Hard Vinyl Chloride Resin Composition) 0.2 part by weight of calcium stearate, 0.5 part by weight of zinc stearate, 3 parts by weight of calcium carbonate, 100 parts by weight of polyvinyl chloride having an average degree of polymerization of 1000, 0.1 parts by weight of benzoylmethane and sodium stearate prepared in Example 2 /
2 parts by weight of triethanolamine-treated hydrotalcites were added to prepare a mixture for a hard vinyl chloride resin composition. This mixture was kneaded in the same manner as in Comparative Example 1 to prepare a test piece, which was similarly subjected to the gear oven test and the initial colorability of the press was examined. The results are shown in Table 2.

[0067]

[Table 2]

Comparative Example 5 (Soft Vinyl Chloride Resin Composition) 100 parts by weight of polyvinyl chloride having an average degree of polymerization of 1300, 50 parts by weight of a plasticizer (dioctyl phthalate), 1 part by weight of zinc stearate, 0.1 part by weight of dibenzoylmethane. Parts and sodium stearate treated hydrotalcites 2 prepared in Comparative Example 2
Parts by weight were added to prepare a mixture for the soft vinyl chloride resin composition. This mixture was kneaded in the same manner as in Comparative Example 1, a test piece was prepared, and similarly subjected to a gear oven test, and the initial colorability of press, volume resistivity and bloomability were examined. The results are shown in Table 3.

Examples 5 to 8 (hard vinyl chloride resin composition) 0.1% by weight, 0.5% by weight, and 5% by weight of the sodium stearate-treated hydrotalcites prepared in Comparative Example 2, respectively.
0% by weight and 10.0% by weight of triethanolamine were added, and the mixture was uniformly stirred and mixed using a Henschel mixer at room temperature and then pulverized to obtain triethanolamine-treated hydrotalcites. These are called sodium stearate / triethanolamine-treated hydrotalcites.

Polyvinyl chloride having an average degree of polymerization of 1300 10
To 0 parts by weight, 50 parts by weight of a plasticizer (dioctyl phthalate), 1 part by weight of zinc stearate, 0.1 part by weight of dibenzoylmethane and 2 parts by weight of sodium stearate / triethanolamine-treated hydrotalcites are added, A mixture for a soft vinyl chloride resin composition was prepared. This mixture was kneaded in the same manner as in Comparative Example 1, a test piece was prepared, and similarly subjected to a gear oven test, and the initial colorability of press, volume resistivity and bloomability were examined. The results are shown in Table 3.

[0071]

[Table 3]

Comparative Example 6 (Hard Vinyl Chloride Resin Composition) 0.2 part by weight of calcium stearate, 0.5 part by weight of zinc stearate, 3 parts by weight of calcium carbonate, 100 parts by weight of polyvinyl chloride having an average degree of polymerization of 1000, A mixture for a hard vinyl chloride resin composition was prepared by adding 0.1 part by weight of benzoylmethane and 0.5 part by weight of hydrotalcites treated with sodium stearate prepared in Comparative Example 2. This mixture was kneaded in the same manner as in Comparative Example 1 to prepare a test piece, which was similarly subjected to the gear oven test and the initial colorability of the press was examined.

Examples 9 to 12 (Hard vinyl chloride resin composition) 0.1% by weight, 0.5% by weight, and 5% by weight of the sodium stearate-treated hydrotalcites prepared in Comparative Example 2, respectively.
0% by weight and 10.0% by weight of triethanolamine were added, and the mixture was uniformly stirred and mixed using a Henschel mixer at room temperature and then pulverized to obtain triethanolamine-treated hydrotalcites. These are called sodium stearate / triethanolamine-treated hydrotalcites.

Polyvinyl chloride 10 having an average degree of polymerization of 1000
0 parts by weight of calcium stearate 0.2 parts by weight, zinc stearate 0.5 parts by weight, calcium carbonate 3 parts by weight,
A mixture for a hard vinyl chloride resin composition was prepared by adding 0.1 part by weight of dibenzoylmethane and 0.5 part by weight of the sodium stearate / triethanolamine-treated hydrotalcites. This mixture was kneaded in the same manner as in Comparative Example 1 to prepare a test piece, which was similarly subjected to the gear oven test and the initial colorability of the press was examined.
The results are shown in Table 4.

[0075]

[Table 4]

Comparative Example 7 (Soft Vinyl Chloride Resin Composition) 100 parts by weight of polyvinyl chloride having an average degree of polymerization of 1300, 50 parts by weight of a plasticizer (dioctyl phthalate), 1 part by weight of zinc stearate and 0.1 part by weight of dibenzoylmethane. Parts and sodium stearate treated hydrotalcites 2 prepared in Comparative Example 2
Parts by weight were added to prepare a mixture for the soft vinyl chloride resin composition. This mixture was kneaded in the same manner as in Comparative Example 1,
A test piece was prepared and similarly subjected to a gear oven test, and the initial colorability of press, volume resistivity and bloomability were examined.

Examples 13 to 15 (Soft Vinyl Chloride Resin Composition) 0.5 wt% of monoethanolamine, diethanolamine and triethanolamine with respect to the sodium stearate-treated hydrotalcites prepared in Comparative Example 2, respectively. And evenly stir at room temperature using a Henschel mixer,
After mixing, they were pulverized to obtain ethanol-treated hydrotalcites. This is referred to as sodium stearate / mono-, di- or triethanolamine-treated hydrotalcites.

Polyvinyl chloride having an average degree of polymerization of 1300 10
50 parts by weight of a plasticizer (dioctyl phthalate), 0 part by weight, 1 part by weight of zinc stearate, 0.1 part by weight of dibenzoylmethane and the above sodium stearate / mono,
A mixture for a soft vinyl chloride resin composition was prepared by adding 2 parts by weight of hydrotalcites treated with di- or triethanolamine. This mixture was kneaded in the same manner as in Comparative Example 1, a test piece was prepared, and similarly subjected to a gear oven test, and the initial colorability of press, volume resistivity and bloomability were examined. The results are shown in Table 5.

[0079]

[Table 5]

Comparative Example 8 (Hard Vinyl Chloride Resin Composition) 0.2 part by weight of calcium stearate, 0.5 part by weight of zinc stearate, 3 parts by weight of calcium carbonate, 100 parts by weight of polyvinyl chloride having an average degree of polymerization of 1000, A mixture for a hard vinyl chloride resin composition was prepared by adding 0.1 part by weight of benzoylmethane and 0.5 part by weight of hydrotalcites treated with sodium stearate prepared in Comparative Example 2. This mixture was kneaded in the same manner as in Comparative Example 1 to prepare a test piece, which was similarly subjected to the gear oven test and the initial colorability of the press was examined.

Examples 16 to 18 (Hard vinyl chloride resin composition) With respect to the hydrotalcites treated with sodium stearate prepared in Comparative Example 2, monoethanolamine, diethanolamine and triethanolamine 0.5 weight respectively. %, And the mixture was uniformly stirred and mixed using a Henschel mixer at room temperature, and then pulverized to obtain ethanol-treated hydrotalcites. This is referred to as sodium stearate / mono-, di- or triethanolamine-treated hydrotalcites.

Polyvinyl chloride 10 having an average degree of polymerization of 1000
0 parts by weight of calcium stearate 0.2 parts by weight, zinc stearate 0.5 parts by weight, calcium carbonate 3 parts by weight,
A mixture for a hard vinyl chloride resin composition was prepared by adding 0.1 part by weight of dibenzoylmethane and 0.5 part by weight of the above sodium stearate / mono-, di- or triethanolamine-treated hydrotalcites. This mixture was kneaded in the same manner as in Comparative Example 1 to prepare a test piece, which was similarly subjected to the gear oven test and the initial colorability of the press was examined. The results are shown in Table 6.

[0083]

[Table 6]

Examples 19 to 22 (Soft vinyl chloride resin composition) 0.5% by weight of triethanolamine was added to the sodium stearate-treated hydrotalcites prepared in Comparative Example 2, and the mixture was mixed at room temperature with a Henschel mixer. After being uniformly stirred and mixed by using, the mixture was pulverized to obtain triethanolamine-treated hydrotalcites. These are called sodium stearate / triethanolamine-treated hydrotalcites.

Polyvinyl chloride 10 having an average degree of polymerization of 1300
50 parts by weight of a plasticizer (dioctyl phthalate), 1 part by weight of zinc stearate, and 0.1 parts by weight of dibenzoylmethane together with 0 part by weight of the above sodium stearate / triethanolamine-treated hydrotalcite in the amounts shown in Table 7. The ingredients were added to prepare a mixture for the soft vinyl chloride resin composition. This mixture was kneaded in the same manner as in Comparative Example 1, a test piece was prepared, and similarly subjected to a gear oven test, and the initial colorability of press, volume resistivity and bloomability were examined. The results are shown in Table 7.

[0086]

[Table 7]

Examples 23 to 26 (Hard vinyl chloride resin composition) 0.5% by weight of triethanolamine was added to the sodium stearate-treated hydrotalcite prepared in Comparative Example 2, and the mixture was mixed at room temperature with a Henschel mixer. After being uniformly stirred and mixed by using, the mixture was pulverized to obtain triethanolamine-treated hydrotalcites. These are called sodium stearate / triethanolamine-treated hydrotalcites.

Polyvinyl chloride 10 having an average degree of polymerization of 1000
0 parts by weight of calcium stearate 0.2 parts by weight, zinc stearate 0.5 parts by weight, calcium carbonate 3 parts by weight,
A mixture for a hard vinyl chloride resin composition was prepared by adding the sodium stearate / triethanolamine-treated hydrotalcites in an amount shown in Table 8 together with 0.1 part by weight of dibenzoylmethane. This mixture was kneaded in the same manner as in Comparative Example 1 to prepare a test piece, and similarly,
It was subjected to a gear oven test and the initial colorability of the press was examined. The results are shown in Table 8.

[0089]

[Table 8]

Comparative Examples 9 to 11 (Soft vinyl chloride resin composition) Mg_0.667Al
_0.333(OH)₂(CO₃)_0.167・ 0.487 H₂Table with O
Hydrotalcites A, Mg_0.692Al_0.308
(OH)₂(CO₃)_0.154・ 0.538 H₂Represented by O
Hydrotalcites B and Mg_0.584Zn_0.083Al
_{0 .333}(OH)₂(CO₃)_0.167・ 0.498 H₂Table with O
The same hydrotalcites C as in Comparative Example 2 were used.
Pre-surface with 3% by weight sodium stearate
Processed. Hereafter, this is treated with sodium stearate.
Hydrotalcites A, B or C.

Polyvinyl chloride having an average degree of polymerization of 1300 10
50 parts by weight of a plasticizer (dioctyl phthalate), 1 part by weight of zinc stearate, 0.1 part by weight of dibenzoylmethane and 2 parts by weight of sodium stearate-treated hydrotalcites A, B or C are added to 0 part by weight, A mixture for a soft vinyl chloride resin composition was prepared. This mixture was kneaded in the same manner as in Comparative Example 1, a test piece was prepared, and similarly subjected to a gear oven test, and the initial colorability of press, volume resistivity and bloomability were examined. The results are shown in Table 9.

Examples 27-29 (Soft vinyl chloride resin composition) Mg_0.667Al
_0.333(OH)₂(CO₃)_0.167・ 0.487 H₂Table with O
Hydrotalcites A, Mg_0.692Al_0.308
(OH)₂(CO₃)_0.154・ 0.538 H₂Represented by O
Hydrotalcites B and Mg_0.584Zn_0.083Al
_{0 .333}(OH)₂(CO₃)_0.167・ 0.498 H₂Table with O
The same hydrotalcites C as in Comparative Example 2 were used.
Pre-surface with 3% by weight sodium stearate
Processed.

0.5% by weight of triethanolamine was added to each of these sodium stearate-treated hydrotalcites, and the mixture was uniformly stirred and mixed with a Henschel mixer at room temperature, and then pulverized. Hydrotalcites treated with triethanolamine were obtained. This is referred to as sodium stearate / triethanolamine-treated hydrotalcites A, B or C.

Polyvinyl chloride having an average degree of polymerization of 1300 10
50 parts by weight of plasticizer (dioctyl phthalate), 1 part by weight of zinc stearate, 0.1 part by weight of dibenzoylmethane and 0 parts by weight of sodium stearate / triethanolamine treated hydrotalcites A, B or C.
2 parts by weight were added to prepare a mixture for the soft vinyl chloride resin composition. This mixture was kneaded in the same manner as in Comparative Example 1, a test piece was prepared, and similarly subjected to a gear oven test, and the initial colorability of press, volume resistivity and bloomability were examined.

[0095]

[Table 9]

Comparative Examples 12-14 (Hard vinyl chloride resin composition) Mg_0.667Al
_0.333(OH)₂(CO₃)_0.167・ 0.487 H₂Table with O
Hydrotalcites A, Mg_0.692Al_0.308
(OH)₂(CO₃)_0.154・ 0.538 H₂Represented by O
Hydrotalcites B and Mg_0.584Zn_0.083Al
_{0 .333}(OH)₂(CO₃)_0.167・ 0.498 H₂Table with O
The same hydrotalcites C as in Comparative Example 2 were used.
Pre-surface with 3% by weight sodium stearate
Processed. This is sodium stearate treated hydro
It is called talcites A, B or C.

Polyvinyl chloride having an average degree of polymerization of 1000 10
0 parts by weight of calcium stearate 0.2 parts by weight, zinc stearate 0.5 parts by weight, dibenzoylmethane 0.1
Parts by weight, 3 parts by weight of calcium carbonate and the above sodium stearate-treated hydrotalcites A, B or C0.
5 parts by weight were added to prepare a mixture for the hard vinyl chloride resin composition. This mixture was kneaded in the same manner as in Comparative Example 1 to prepare a test piece, which was similarly subjected to the gear oven test and the initial colorability of the press was examined. The results are shown in Table 1.
It shows in 0.

Examples 30-32 (Hard vinyl chloride resin composition) Mg_0.667Al
_0.333(OH)₂(CO₃)_0.167・ 0.487 H₂Table with O
Hydrotalcites A, Mg_0.692Al_0.308
(OH)₂(CO₃)_0.154・ 0.538 H₂Represented by O
Hydrotalcites B and Mg_0.584Zn_0.083Al
_{0 .333}(OH)₂(CO₃)_0.167・ 0.498 H₂Table with O
The same hydrotalcites C as in Comparative Example 2 were used.
Pre-surface with 3% by weight sodium stearate
Processed.

To these hydrotalcites treated with sodium stearate, 0.5% by weight of triethanolamine was added, and the mixture was uniformly stirred and mixed with a Henschel mixer at room temperature, and then pulverized. Hydrotalcites treated with triethanolamine were obtained. This is referred to as sodium stearate / triethanolamine-treated hydrotalcites A, B or C.

Polyvinyl chloride 10 having an average degree of polymerization of 1000
0 parts by weight of calcium stearate 0.2 parts by weight, zinc stearate 0.5 parts by weight, dibenzoylmethane 0.1
Parts by weight, 3 parts by weight of calcium carbonate and 0.5 parts by weight of the sodium stearate / triethanolamine-treated hydrotalcites A, B or C were added to prepare a mixture for a hard vinyl chloride resin composition. This mixture was kneaded in the same manner as in Comparative Example 1 to prepare a test piece, which was similarly subjected to the gear oven test and the initial colorability of the press was examined. The results are shown in Table 10.

[0101]

[Table 10]

[0102]

As described above, by incorporating hydrotalcites surface-treated with alkanolamines according to the present invention into a vinyl chloride resin composition, the thermal stability during molding can be improved. In addition, in the case of the soft vinyl chloride resin composition, blooming of the plasticizer can be suppressed well.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Koichi Tsuda             5-1, Ebishimacho, Sakai City, Osaka Prefecture Sakai Chemical Industry             Within the corporation F-term (reference) 4G076 AA10 AA16 AA18 AA19 BF06                       DA02                 4J002 BD031 BD041 DA039 DE239                       DE286 DJ009 DJ019 DJ039                       EB029 EE047 EF058 EF088                       EF098 EG018 EG028 EG038                       EG048 EG078 EG088 EH038                       EH048 EH099 EH149 EV188                       FB086 FB096 FB166 FB236                       FD019 FD029 FD050 FD070                       FD178 GL00 GM00 GN00                       GQ01 GT00

Claims (10)

[Claims] 1. Hydrotalcites which are surface-treated with alkanolamines. 2. The hydrotasites according to claim 1, wherein the alkanolamines are at least one selected from monoethanolamine, diethanolamine and triethanolamine. 3. The hydrotalcites according to claim 1, which have been surface-treated with a higher fatty acid or an alkali metal salt thereof in advance. 4. A method for producing surface-treated hydrotalcites, which comprises mixing hydrotalcites and alkanolamines. 5. The method for producing a surface-treated hydrotasite according to claim 4, wherein the alkanolamine is at least one selected from monoethanolamine, diethanolamine and triethanolamine. 6. The method for producing hydrotalcites according to claim 4, wherein the hydrotalcites are surface-treated in advance with a higher fatty acid or an alkali metal salt thereof. 7. A vinyl chloride resin containing 0.1 to 20 parts by weight of the hydrotalcites according to claim 1 to 100 parts by weight of a vinyl chloride polymer. Composition. 8. The vinyl chloride resin composition according to claim 7, which further comprises 0.01 to 5 parts by weight of β-diketones based on 100 parts by weight of the vinyl chloride polymer. 9. A polyvinyl chloride containing 100 parts by weight of 1 to 15 parts by weight of the hydrotalcites according to claim 1, 10 to 150 parts by weight of a plasticizer, and a higher fatty acid metal. A soft to semi-rigid vinyl chloride resin composition containing 0.01 to 5 parts by weight of a salt lubricant and 0.01 to 5 parts by weight of β-diketones. 10. With respect to 100 parts by weight of polyvinyl chloride,
The hydrotalcites according to any one of claims 1 to 3 are contained in an amount of 0.1 to 10 parts by weight, a lubricant comprising a higher fatty acid metal salt in an amount of 0.01 to 10 parts by weight, and a β-diketone in an amount of 0.01 to 5 parts. A hard vinyl chloride resin composition comprising 1 part by weight and 0.1 to 100 parts by weight of a filler.