JP2001294719A - Chalking preventive for vinyl chloride resin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chalking preventive for a vinyl chloride resin which is excellent in chalking prevention capability. SOLUTION: A chalking preventive formed from a dicarboxylic acid and a copper salt of an organic carboxylic acid is added to a vinyl chloride resin. The effects of the preventive is markedly exhibited especially when a colorant is used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a novel anti-chalking agent for vinyl chloride resins. For more information,
An object of the present invention is to provide a choking inhibitor for a vinyl chloride resin in which king prevention performance is dramatically improved.

[0002]

2. Description of the Related Art Vinyl chloride resins are water-resistant, acid-resistant,
Although it has excellent properties of being excellent in alkali resistance and being hardly soluble in an organic solvent, it has a drawback of being unstable to heat and light.

[0003] In particular, when a molded article such as a rain gutter, a window frame, or a pipe used outdoors for a long period of time is exposed to sunlight, a whitening phenomenon called "chalking" occurs on the surface thereof, and the appearance is impaired.

In order to prevent the above-mentioned choking, there has been proposed a vinyl chloride resin composition in which nickel acetate, manganese chloride, copper oxide or the like is added to a vinyl chloride resin (JP-A-56-22342). Further, a vinyl chloride resin composition having improved anti-chalking properties by adding a copper salt of an organic carboxylic acid to a vinyl chloride resin has also been proposed (JP-A-59-102943).

[0005] However, these resin compositions have a low
Although a certain degree of prevention effect on the occurrence of king is exhibited, it is still insufficient.

As a technique for further improving the choking prevention performance, a vinyl chloride resin composition in which copper acetate and hydrotalcite are added to a vinyl chloride resin has been proposed (JP-A-6-322206).

However, there is still room for improvement in the anti-chalking performance of the above-mentioned vinyl chloride resin composition, and the development of a choking inhibitor for vinyl chloride resins having a higher anti-chalking effect is desired. I was

[0008]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a choking inhibitor capable of exhibiting an extremely high choking preventing performance on a vinyl chloride resin.

[0009]

Means for Solving the Problems As a result of repeated studies to solve the above problems, the present inventors have found that copper carboxylate and dicarboxylic acid are used in combination as an anti-choking agent for vinyl chloride resin. As a result, the present inventors have found that an extremely high anti-chalking performance, which cannot be achieved by the conventional organic carboxylic acid copper salt or a composition using hydrotalcite in combination with the organic copper carboxylate, can be achieved, and have completed the present invention.

That is, the present invention is a choking inhibitor for a vinyl chloride resin (hereinafter, also simply referred to as a choking inhibitor) comprising a copper salt of an organic carboxylic acid and a dicarboxylic acid.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The anti-chalking agent of the present invention comprises
It comprises a copper salt of an organic carboxylic acid and a dicarboxylic acid. The anti-chalking agent of the present invention, which uses these two components in combination, can drastically reduce the occurrence of choking when blended in a vinyl chloride resin as compared with the prior art.

Although the mechanism of action for exhibiting the above choking prevention effect is not clear, the present inventors presume as follows.

That is, the organic copper carboxylate has a complex structure having a binuclear structure, and a dicarboxylic acid is coordinated to the organic copper carboxylate to form a lattice-type metal complex. It is presumed that the substance causing the king is firmly retained in the vinyl chloride resin.

As the organic carboxylic acid copper salt constituting the anti-choking agent of the present invention, known organic carboxylic acid salts are used without any particular limitation. Typical examples are copper stearate, copper palmitate, copper laurate, copper octylate, copper acetate,
Examples include copper benzoate, pt-butyl copper benzoate, copper 1,2-hydroxystearate, copper maleate, copper naphthenate, and copper terephthalate. Among them, copper acetate is preferred.

As the dicarboxylic acid constituting the anti-choking agent of the present invention, known dicarboxylic acids can be used without any particular limitation. Typical examples are oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid,
Suberic acid, azelaic acid, aliphatic saturated dicarboxylic acids such as sebacic acid, maleic acid, fumaric acid, citraconic acid,
Aliphatic unsaturated dicarboxylic acids such as mesaconic acid, 1,3-butadiene-1,4-dicarboxylic acid, succinic acid, phthalic acid, isophthalic acid, terephthalic acid, 1,4-cyclohexanedicarboxylic acid, 2,6- Naphthalenedicarboxylic acid, 4,
And carbocyclic dicarboxylic acids such as 4′-oxybisbenzoic acid. Among them, terephthalic acid, azelaic acid and 2,6-naphthalenedicarboxylic acid are preferred.

In the anti-choking agent of the present invention, the ratio of the organic carboxylic acid copper salt to the dicarboxylic acid is not particularly limited. Preferably, it is preferably blended so as to be 0.5 to 5 mol.

When the anti-chalking agent of the present invention is blended with a vinyl chloride resin, the resulting anti-chalking effect is exerted on the resulting vinyl chloride resin composition.

Known vinyl chloride resins can be used without any particular limitation. For example, a homopolymer of vinyl chloride, vinyl chloride-obtained by polymerization methods such as emulsion polymerization, suspension polymerization, bulk polymerization, and solution polymerization.
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-urethane copolymer, vinyl chloride-butadiene copolymer, chloride Vinyl-isoprene copolymer, vinyl chloride-chlorinated propylene copolymer, vinyl chloride-maleic acid ester copolymer, vinyl chloride-acrylic acid ester copolymer, vinyl chloride-acrylonitrile copolymer, cross-linked vinyl chloride polymer , Vinyl chloride-various vinyl ether copolymer, vinyl chloride-styrene-maleic anhydride terpolymer, vinyl chloride-styrene-acrylonitrile terpolymer, vinyl chloride-vinylidene chloride-vinyl acetate terpolymer Vinyl chloride resins such as copolymers and their blends or other synthetic resins , Such as acrylonitrile - styrene copolymers, chlorinated vinyl chloride polymer, ethylene - vinyl acetate copolymer, ethylene - ethyl (meth) acrylate -
And copolymers, blends such as polyesters, block copolymers, and graft copolymers. The vinyl chloride resin may be a soft vinyl chloride resin to which a plasticizer is added.

The average degree of polymerization of the vinyl chloride resin is not particularly limited, but is preferably 400 to 2500, particularly preferably 600 to 2000.

That is, if the average degree of polymerization is too small, the weather resistance of the vinyl chloride resin itself tends to decrease, and mechanical properties such as impact resistance and elastic modulus and thermal stability tend to decrease. On the other hand, if the average degree of polymerization is too large, the moldability may decrease, which is not preferable.

In the present invention, the blending amount of the choking inhibitor to the vinyl chloride resin is not particularly limited.
0.01 to 3 parts by weight, preferably 0.1 to 2 parts by weight, and 0.02 to 6 parts by weight of dicarboxylic acid, preferably 0.2 to 2 parts by weight, based on 100 parts by weight of the vinyl chloride resin. A ratio of ４4 parts by weight is preferred.

That is, when the amount of the organic carboxylic acid copper salt exceeds 3 parts by weight, the effect of improving weather resistance and the effect of preventing choking tend to decrease. In addition, the heat resistance of the resin may be reduced, and the processability may be reduced. On the other hand, when the amount of the organic carboxylic acid copper salt is less than 0.01 part by weight, the anti-chalking performance may not be sufficiently exhibited.

If the amount of the dicarboxylic acid exceeds 6 parts by weight, the effect of preventing choking tends to decrease. In addition, there is a possibility that the heat resistance of the resin is reduced and the workability is reduced. On the other hand, when the amount of the organic carboxylic acid copper salt is less than 0.02 parts by weight, the anti-chalking performance may not be sufficiently exhibited.

In the above-mentioned vinyl chloride resin composition, the amount of the choking inhibitor is not particularly limited as long as it is within the above range, but the dicarboxylic acid is contained in an amount of 0.1 to 10 mol per mol of the organic carboxylic acid copper salt. It is preferable to mix them so as to be 0.5 to 5 mol.

The effect of the anti-chalking agent of the present invention is remarkable when the vinyl chloride resin is colored with a coloring agent. A composition containing a king inhibitor exhibits a particularly good effect.

As the coloring agent, known coloring agents such as inorganic coloring agents and organic coloring agents conventionally used for vinyl chloride resins are used without any particular limitation. For example, as inorganic colorants, red iron oxide, yellow iron oxide, iron black, titanium dioxide, nickel titanium yellow, chromium titanium yellow, zinc ferrite pigment, ultramarine, cobalt blue, chromium oxide, spinel green, graphite, chromium Orange, molybdenum red, carbon black, and calcined colorants. Examples of the organic colorant include quinacridone, polyazo, perylene, diketopyrrolopyrrole, perinone, quinophthalone, indanthrene, benzimidazolone, isoindolinone, and phthalocyanine colorants. No. These colorants may be used alone or in combination.

The amount of the coloring agent may be appropriately determined. In the vinyl chloride resin composition containing the anti-chalking agent comprising the organic carboxylic acid copper salt and the dicarboxylic acid, 100 parts by weight of the vinyl chloride resin is used. On the other hand, 0.0
The ratio is generally 1 to 10 parts by weight, preferably 0.2 to 5 parts by weight, particularly preferably 0.5 to 2 parts by weight.

In the above-mentioned embodiment in which the colorant is used, it is preferable to mix the colorant with the vinyl chloride resin in a state of being mixed with the anti-chalking agent of the present invention in order to enhance the anti-chalking effect. .

That is, according to the present invention, there is provided a colorant composition for a vinyl chloride resin, comprising the above-mentioned choking inhibitor and a colorant.

In the vinyl chloride resin composition containing the anti-chalking agent of the present invention, the use of a copper salt of an organic dicarboxylic acid may lower the heat resistance of the vinyl chloride resin composition somewhat. Therefore, in the vinyl chloride resin composition of the present invention, it is preferable to add hydrotalcite for the purpose of complementing such heat resistance.

The hydrotalcite is a hydrous double salt compound comprising magnesium and aluminum represented by the following general formula.

Mg _1-x Al _x (OH) ₂ (A) _{X / 2} · mH ₂ O (where X is a real number in the range of 0 <X ≦ 0.5; A
Is CO ₃ and / or SO ₄ ; m is 0 or a positive real number. ) The hydrotalcite may be a natural product or a synthetic product. Further, hydrotalcite is used without any limitation in its crystal structure, crystal particle diameter and the like.

The surface of the hydrotalcite may be a higher fatty acid such as stearic acid, a higher fatty acid metal salt such as an alkali metal oleate, an organic sulfonic acid metal salt such as an alkali metal dodecylbenzenesulfonate, or a higher fatty acid amide. And those coated with higher fatty acid esters or waxes. Further, hydrotalcite modified with zinc or the like can be used.

The amount of hydrotalcite used is preferably 0.1 to 3 parts by weight, more preferably 0.3 to 2 parts by weight, based on 100 parts by weight of the vinyl chloride resin. That is, when the amount of the hydrotalcite exceeds 3 parts by weight, the appearance of the molded article tends to deteriorate. If the amount is less than 0.1 part by weight, the heat resistance of the obtained vinyl chloride resin composition may be impaired, and the processability may be reduced.

The vinyl chloride resin composition containing the anti-chalking agent of the present invention may optionally contain known additives. Preferred examples of such additives include a lead compound, an organic tin compound, an organic acid metal salt other than an organic copper carboxylate, a plasticizer, a filler, a phenolic antioxidant, and an organic phosphorus antioxidant. Agent, thioe-
And ter-based antioxidants.

Specific examples of the above lead compounds include basic lead silicate, basic lead sulfate, dibasic lead sulfate, tribasic lead sulfate, basic lead sulfite, dibasic lead phosphite, and dibasic lead phosphite. Basic lead phthalate, tribasic lead maleate, lead salicylate, lead stearate, basic lead stearate, dibasic lead stearate, lead laurate, lead octylate, lead 1,2-hydroxystearate, Lead-based compounds such as lead naphthenate are exemplified.

Specific examples of the organic tin compound include dibutyltin laurate, dioctyltin laurate, dibutyltin maleate, dioctyltin maleate, dibutyltin mercaptoacetate, and monobutyltin mercaptoacetate. Dibutyltin isooctylthioglycolate, monobutyltin isooctylthioglycolate,
Organic tin compounds such as dioctyltin mercaptoacetate, monooctyltin mercaptoacetate, and dioctyltin isooctylthioglycolate are exemplified.

Examples of the metal salts of organic acids include Li, Na, K, Mg, C
a, Sr, Ba, Zn, Cd, Pb and the like. Organic acids include acetic acid, propionic acid, caprylic acid, 2-
Ethylhexoic acid, lauric acid, stearic acid, isostearic acid, 1,2-hydroxystearic acid, oleic acid, linoleic acid, linoleic acid, glycolic acid, lactic acid, hydroacrylic acid, α-oxyacetic acid, glyceric acid, Malic acid, oxalic acid, citric acid, thioglycolic acid,
Mercaptopropionic acid, laurylmercaptopropionic acid, benzoic acid, para-tert-butyl-benzoic acid, dimethylbenzoic acid, aminobenzoic acid, salicylic acid, aminoacetic acid, glutamic acid, oxalic acid, succinic acid, adipic acid, phthalic acid, maleic acid, Organic acids such as thiodipropionic acid are exemplified.

Specific examples of the plasticizer include di-n-butyl phthalate, di-n-techtylhexyl phthalate (DOP), di-n-octyl phthalate, diisooctyl phthalate, and phthalic acid. Octyldecyl, diiridecyl phthalate, butylbenzyl phthalate, di-2 isophthalate
Phthalic acid plasticizers such as -ethylhexyl, di-2-ethylhexyl adipate (DOA), di-n-adipate
Diisodecyl decyl adipate, dibutyl sebacate,
Phosphate ester plasticizers such as di-2-ethylhexyl sebacate, aliphatic engineering plasticizers, tributyl phosphate, tri-2-ethylhexyl phosphate, 2-ethylhexyl diphenyl phosphate, tricresyl phosphate, etc. Examples include oxy-based plasticizers such as oxy-modified soybean and oxy-modified linseed oil.

Further, as the filler, specifically, silica, diatomaceous earth, alumina, titanium oxide, magnesium oxide, pumice powder, pumice balloon, aluminum hydroxide, magnesium hydroxide, basic magnesium carbonate, Dolomite, calcium sulfate, potassium titanate, barium sulfate, calcium sulfite, talc, clay, mica, asbestos, glass fiber, glass flake, glass beads,
Calcium silicate, montmorillonite, pentonite,
Fillers such as graphite, aluminum powder, molybdenum sulfide, polon fibers, silicon carbide fibers, polyester fibers, polypropylene fibers, polyester fibers, and polyamide fibers may be blended.

These exemplified additives are known as additives for the vinyl chloride resin, and the amounts of the additives may be appropriately determined from known ranges.

Continuing the illustration, examples of the phenolic antioxidant include 2,6-di-tert-butyl-4-hydroxyphenol and 2,6-di-tert-butyl. -P-cresol, 2,6-diphenyl-4-octadecyloxyphenol, stearyl (3,5-di-t-butyl-4-hydroxyphenyl) propionate, distearyl (3,5- Di-tert-butyl-4-hydroxybenzyl) phosphonate, thiodiethyleneglycolbis [(3,5-di-tert-butyl-4-hydroxyphenyl) propionate], 4,4'-thiobis (6- t-
Butyl-m-cresol), 2-octylthio-4,6
-Di (3,5-tert-butyl-4-hydroxyphenoxy) -s-triazine, 2,2'-methylenebis (4-
Methyl-6-t-butylphenol), 2,2′-methylenebis (4-ethyl-6-t-butylphenol),
Bis [3,3'-bis (4-hydroxy-3-t-butylphenyl) butyric acid] glycol ester, 4,4'-butylidenebis (6-t-butyl-m-
Cresol), 2,2'-ethylidenebis (4,6-di-t-butylphenol), 2,2'-ethylidenebis (4-t-butyl-6-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) isocyanate, 1,3,5
-Tris (3,5-di-t-butyl-4-hydroxybenzyl) isocyanate, 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) propionyloxyethyl] isocyanate, tetrakis [methylene (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)
2,4,8,10-tetraoxapyrro [5,5] undecane-bis [β- (3-t-butyl-4-hydroxy-5
-Methylphenyl) propionate], and triethyleneglycolbis [β- (3-t-butyl-4-hydroxy-5-methylphenyl) propionate].

The amount of the phenolic antioxidant added is
0.001 to 100 parts by weight of polyvinyl chloride resin
It is 2 parts by weight, preferably 0.01 to 1.5 parts by weight.

Specific examples of the organophosphorus antioxidant include trisnonylphenyl phosphite, tris (2,4-di-t-butylphenyl) phosphite and di (tridecyl) pentaerythritol diphosphite. Fight,
Bis (2,4-di-t-butylphenyl) pentaerythritol diphosphite, bis (2,6-di-t-butyl-4-methylphenyl) pentaerythritol diphosphite, tetra (tridecyl) Isopropylidene diphenol diphosphite, tetra (tridecyl) -4,
4-n-butylidenebis (2-t-butyl-5-methylphenol) diphosphite, hexa (tridecyl)-
1,1 ′, 3-tris (3-t-butyl-4-hydroxy-5-methylphenyl) butanetriphosphite,
2,2'-methylenebis (4,6-di-t-butylphenyl) octyl phosphite, 2,2'-methylene bis (4,6-di-t-butylphenyl) octadecyl phosphite, 2,2'-methylene bis (4,6-di-t-
Butylphenyl) fluorophosphite, tetrakis (2,4-di-t-butylphenyl) biphenylenediphosphite and the like.

These organic phosphorus antioxidants are added in an amount of 0.001 to 2 parts by weight, preferably 0.01 to 1.5 parts by weight, based on 100 parts by weight of the polyvinyl chloride resin. .

Further, as thioether-based antioxidants, specifically, dialkylthiodipropionates such as dilauryl, dimyristyl and distearyl esters of thiodipropionic acid, and pentaerythritol tetra (β-dodecyl) Polyols such as mercaptopropionate and β-alkylmercaptopropionates.

These thioether-based antioxidants are used in an amount of 0.001-2 parts by weight based on 100 parts by weight of the polyvinyl chloride resin.
It is suitable to add 0.01 parts by weight, preferably 0.01 to 1.5 parts by weight.

Even when the above-mentioned phenol-based antioxidant, organic phosphorus-based antioxidant and thioether-based antioxidant are used in combination, 0.001 to 2 parts by weight, preferably 0.001 to 2 parts by weight, per 100 parts by weight of the resin is used. , 0.01 to 1.5 parts by weight.

[0049] The resin composition of the present invention may further contain various additives other than the above-mentioned additives as long as the effects of the present invention are not impaired.

Specifically, a heat stabilizer such as a hindered amine type; a weathering agent such as a hindered amine type; an ultraviolet absorber such as a benzophenone type, a benzotriazole type or a benzoate type; a nonionic type or a cationic type And anionic antistatic agents; bisamide-based, wax-based dispersants; oxide-based decomposing agents; melamine-based, hydrazine-based, amine-based metal deactivators; Flame retardants such as antimony trioxide, magnesium hydroxide, and red phosphorus; sorbitol-based, aromatic metal phosphate-based, organic acid metal-based clarifying agents or nucleating agents; anti-fogging agents; anti-blocking agents; Organic fillers include, but are not limited to, inorganic antibacterial agents such as metal ions, organic antibacterial agents, and foaming agents.

The method for producing the vinyl chloride resin composition containing the anti-chalking agent of the present invention is not particularly limited.
A method of directly adding and mixing a copper salt of an organic carboxylic acid, a dicarboxylic acid, and a coloring agent and other additives, if necessary, to the resin may be used.

When a coloring agent is used, a method may be used in which the anti-chalking agent and the coloring agent are previously blended, and then this composition is mixed with a vinyl chloride resin.

The molding of the vinyl chloride resin containing the anti-chalking agent of the present invention is not particularly limited, and can be carried out by a known molding method.

For example, T-die extrusion molding, profile extrusion molding,
Injection molding and calendar molding can be used.

The use of the molded article is not particularly limited, but is preferably used for an application requiring an anti-chalking effect.

[0056]

As will be understood from the above description, the anti-chalking agent of the present invention can give an extremely high anti-chalking performance to a vinyl chloride resin composition containing the same. It is. In particular, when a coloring agent is used, such an effect is remarkable.

Therefore, the vinyl chloride resin composition containing the anti-chalking agent of the present invention can be used for building materials such as rain gutters, window frames, sizing boards, flat plates, corrugated plates, gaskets, pipes, joints, and furniture. It is extremely useful as a material for indoor equipment and outdoor equipment such as signboards.

[0058]

EXAMPLES The present invention will be described more specifically with reference to examples and comparative examples, but the present invention is not limited to these examples.

The symbols used in the examples and comparative examples are as follows.

1. Resin A1. Vinyl chloride (homopolymer) Degree of polymerization: 1000 A2. Vinyl chloride (homopolymer) Degree of polymerization: 1300 Vinyl chloride (vinyl chloride-vinyl acetate copolymer) Degree of polymerization: 800

[0061] 2. Copper organic carboxylate C.I. Copper acetate D. Copper oleate E. Copper terephthalate

3. Organic carboxylate F. Nickel acetate G. Chromium acetate * In Table 1, the copper carboxylate and the organic carboxylate are shown as "carboxylates" in the title.

4. Dicarboxylic acid Terephthalic acid Azelaic acid 2,6-naphthalenedicarboxylic acid 4,4'-oxybisbenzoic acid

5. Filler L. Hydrotalcite

6. Colorant M. Crimson complex colorant (weight ratio; titanium oxide / chrome orange / graphite = 3/1/5)

In Examples and Comparative Examples, various tests were performed as follows.

The vinyl chloride resin composition was extruded with a 30 mm φ twin screw extruder to prepare a 1.5 mm thick sheet, and the following tests (a), (b) and (C) were performed.

(A) Weather Resistance Test The molded sheet was placed in an eye-super-UV tester-weather resistance test machine (manufactured by Daipla Wintes) to conduct an accelerated weather test.

In the accelerated weathering test, 100 hours
The change in the color tone of the chalk after 200 hours was measured using a color computer manufactured by Dainichi Seika Kogyo Co., Ltd. with the untested sheet as a standard. The anti-chalking performance was evaluated by whiteness (based on ASTM E313 standard). The smaller the value of whiteness, the higher the anti-chalking performance.

(B) Thermal stability test The molded sheet was placed in a gear oven (manufactured by Toyo Seiki) at 190 ° C, and the time required for thermal degradation and decomposition was measured.
The thermal stability was evaluated. If this measurement time is 180 minutes or more, it indicates that there is no problem in industrial practice.

(C) Test for Confirming Smoothness The smoothness of the formed sheet was confirmed by touch by hand. Good: good smoothness, poor: poor smoothness

Examples 1 to 11 Based on 100 parts by weight of the vinyl chloride resin shown in Table 1, 0.4 parts by weight of calcium stearate, 0.3 parts by weight of zinc stearate, 0.1 parts by weight of stearic acid, 1 part by weight of the coloring agent M, and a copper chloride organic resin, a dicarboxylic acid, and a filler were mixed by a Henschel mixer so as to have a ratio shown in Table 1, and the vinyl chloride resin composition (P
VC resin composition).

Table 1 shows the results of various tests performed on the PVC resin composition.

Note that an embodiment other than Embodiments 1 and 2 (Embodiment 3
Regarding to 11), the colorant, copper carboxylate and dicarboxylic acid to be blended were mixed in advance and blended with the vinyl chloride resin.

Comparative Examples 1 and 2 A vinyl chloride resin composition was obtained in the same manner as in Example 1, except that the organic carboxylic acid copper salt was not used and the amount of dicarboxylic acid was changed as shown in Table 1. And various tests. The results are shown in Table 1.

Comparative Example 2 A vinyl chloride resin composition was obtained in the same manner as in Example 2 except that dicarboxylic acid was not used and the amount of the organic carboxylic acid copper salt was changed as shown in Table 1. Tested. The results are shown in Table 1.

Comparative Examples 3 and 4 A vinyl chloride resin composition was obtained in the same manner as in Example 2 except that the organic carboxylate was changed to the organic carboxylate shown in Table 1, and subjected to various tests. . The results are shown in Table 1.

[0078]

[Table 1] Table 1

 ──────────────────────────────────────────────────続 き Continued from the front page F term (reference) 4J002 BD041 BD051 BD061 BD071 BD081 BD091 BH021 DA038 DC008 DE098 DE108 DE118 DE138 DE158 EA068 EE038 EE048 EF067 EF077 EF107 EF117 EG046 EG056 EG076 EG086 EG106 EU098

Claims (4)

[Claims] 1. A choking inhibitor for a vinyl chloride resin, comprising a copper salt of an organic carboxylic acid and a dicarboxylic acid. 2. A vinyl chloride resin composition comprising the vinyl chloride resin and the choking inhibitor for vinyl chloride resin according to claim 1. 3. The composition according to claim 2, wherein the organic carboxylic acid copper salt and the dicarboxylic acid are mixed in proportions of 0.01 to 3 parts by weight and 0.02 to 6 parts by weight, respectively, based on 100 parts by weight of the vinyl chloride resin. Vinyl chloride resin composition. 4. A colorant composition for a vinyl chloride resin, comprising the anti-chalking agent for a vinyl chloride resin according to claim 1 and a colorant.