JP6828524B2 - Vinyl chloride resin composition - Google Patents

Description

The present invention relates to a vinyl chloride resin composition having excellent antifouling properties.

Vinyl chloride resins are generally excellent in physical properties such as impact resistance and heat resistance and weather resistance, and are relatively inexpensive. Therefore, they are used for interior / exterior building materials for houses, electric wire coating materials, automobiles and other vehicles. Widely used for interior / exterior members, electrical equipment members, furniture, etc.

Conventionally, in the fields of building materials and industrial materials, vinyl chloride resin compositions to which an antistatic agent, silicone, etc. have been added have been proposed in order to prevent dust and liquid stains from adhering to the surface of resin products. (Patent Document 1 and the like), but the required characteristics could not be fully satisfied. In particular, with respect to stains caused by oily foods, the vinyl chloride-based resin composition simply containing these additives has insufficient antifouling performance.

In addition, a lubricant such as a fatty acid ester is generally used as an additive for imparting slipperiness to a vinyl chloride resin (for example, Patent Document 2 and the like). Further, it has been proposed to add a polyester plasticizer to a vinyl chloride resin to impart oil resistance (for example, Patent Document 3). However, none of these additives suggest that they improve antifouling properties.

Japanese Unexamined Patent Publication No. 8-283509 Japanese Unexamined Patent Publication No. 2012-207065 Japanese Unexamined Patent Publication No. 2004-161801

An object of the present invention is to provide a vinyl chloride resin composition which exhibits excellent antifouling properties against a wide range of stain components, from oily to powdery stains.

As a result of diligent studies to solve the above problems, the present inventors have found that the glycerin-based fatty acid ester exhibits excellent antifouling property against powdery stains such as dust. In addition, by using a polyester plasticizer together as an antifouling agent for oily foods, it becomes possible to effectively prevent oily to powdery stains on a molded product made of a vinyl chloride resin composition. I found it.
That is, the gist of the present invention is as follows.

[1] The glycerin-based fatty acid ester (C) contains a vinyl chloride-based resin (A), a polyester-based plasticizer (B), and a glycerin-based fatty acid ester (C), and at least one hydroxyl group in the glycerin molecule has a carbon number. A vinyl chloride resin composition that is esterified with 8 to 24 fatty acids and contains 2 to 14 parts by mass of the glycerin fatty acid ester (C) with respect to 100 parts by mass of the vinyl chloride resin (A). Stuff.

[2] The vinyl chloride resin composition according to [1], wherein the content of the polyester plasticizer (B) is 10 to 100 parts by mass with respect to 100 parts by mass of the vinyl chloride resin (A).

[3] The glycerin-based fatty acid ester (C) contains a vinyl chloride-based resin (A), a polyester-based plasticizer (B), and a glycerin-based fatty acid ester (C), and one hydroxyl group in the glycerin molecule has 8 carbon atoms. A mixture of a glycerin-based fatty acid monoester (C1) esterified with ~ 24 fatty acids and a glycerin-based fatty acid diester (C2) in which two hydroxyl groups in the glycerin molecule are esterified with a fatty acid having 8 to 24 carbon atoms. A vinyl chloride resin composition in which the content of the mixed product (C3) is 2 to 14 parts by mass with respect to 100 parts by mass of the vinyl chloride resin (A).

[4] The glycerin-based fatty acid ester (C) contains a vinyl chloride-based resin (A), a polyester-based plasticizer (B), and a glycerin-based fatty acid ester (C), and one hydroxyl group in the glycerin molecule has 8 carbon atoms. It is a glycerin-based fatty acid monoester (C1) esterified with ~ 24 fatty acids, and the content of the glycerin-based fatty acid monoester is 2 to 14 parts by mass with respect to 100 parts by mass of the vinyl chloride resin (A). Vinyl chloride-based resin composition.

[5] The vinyl chloride resin composition according to any one of [1] to [4], wherein the vinyl chloride resin (A) is a vinyl chloride resin having an average degree of polymerization of 1,000 to 6,500.

[6] The vinyl chloride resin composition according to any one of [1] to [5], which is a vinyl chloride resin composition for building materials.

[7] An insect repellent packing for a cupboard or cabinet for storing food or tableware made of the vinyl chloride resin composition according to any one of [1] to [6].

[8] A refrigerator gasket member made of the vinyl chloride resin composition according to any one of [1] to [6].

The vinyl chloride resin composition of the present invention exhibits excellent antifouling properties against a wide range of stain components from oily to powdery stains, and is an insect-proof packing or refrigerator gasket member for cupboards and cabinets for storing foods and tableware. In molded products such as, these stain components are hard to adhere, and even if these stain components adhere, they can be easily removed by cleaning, etc., preventing deterioration of the appearance due to stains, and aesthetically pleasing. A feeling of cleanliness can be maintained for a long period of time.

Hereinafter, the present invention will be described in detail, but the present invention is not limited to the following description, and can be arbitrarily modified and carried out without departing from the gist of the present invention. In addition, in this specification, when a numerical value or a physical property value is put before and after using "~", it is used as including the value before and after that.

[Vinyl chloride resin composition]
The vinyl chloride resin composition of the present invention contains a vinyl chloride resin (A), a polyester plasticizer (B) and a glycerin fatty acid ester (C), and the glycerin fatty acid ester (C) is contained in the glycerin molecule. At least one hydroxyl group is esterified with a fatty acid having 8 to 24 carbon atoms, and the content of the glycerin-based fatty acid ester (C) is 2 to 14 mass with respect to 100 parts by mass of the vinyl chloride resin (A). It is characterized by being a department.

<Vinyl chloride resin (A)>
The vinyl chloride resin (A) used in the present invention (hereinafter, may be referred to as "component (A)") is a homopolymer of a vinyl chloride monomer or a vinyl chloride monomer and a monomer copolymerizable with the vinyl chloride monomer. As long as it is a copolymer of, the type is not limited.

Examples of the monomer copolymerizable with the vinyl chloride monomer include vinyl esters such as vinyl acetate, vinyl propionate and vinyl laurate; acrylic acid esters such as methyl acrylate, ethyl acrylate and butyl acrylate; methyl methacrylate and ethyl methacrylate. Methacrylic acid esters such as; maleic acid esters such as dibutyl maleate and diethyl maleate; fumaric acid esters such as dibutyl fumarate and diethyl fumarate; vinyl ethers such as vinyl methyl ether, vinyl butyl ether and vinyl octyl ether; Vinyl cyanides such as acrylonitrile and methacrylonitrile; α-olefins such as ethylene, propylene and styrene; vinylidene halides other than vinyl chloride such as vinylidene chloride and vinyl bromide or vinyl halides; diallylphthalate and ethylene glycol Examples thereof include polyfunctional monomers such as dimethacrylate, but the monomers used are not limited to those described above. One of these monomers may be used alone, or two or more of these monomers may be used in combination. When the above-mentioned monomer is used in the production of a vinyl chloride resin, the monomer is preferably used in a range of 30% by mass or less, and is in a range of 20% by mass or less in the constituent components of the vinyl chloride resin. It is more preferable to use it as such. The vinyl chloride-based resin in the present invention contains a (co) polymer of vinyl chloride and a copolymerizable monomer used if necessary, and then chlorinated polyvinyl chloride, and a cross-linking agent is used during the polymerization. A crosslinked vinyl chloride resin containing an insoluble crosslinked gel in tetrahydrofuran (hereinafter referred to as THF) crosslinked by addition is also included.

The method for producing the vinyl chloride resin (A) is not particularly limited, and for example, a usual method such as a suspension polymerization method, a massive polymerization method, a fine suspension polymerization method, or an emulsion polymerization method can be used.

The average degree of polymerization of the vinyl chloride resin (A) is preferably 1000 to 6,500, more preferably 1,000, based on JIS K6721 from the viewpoint of processability, moldability, and physical characteristics. ~ 4,000. When the average degree of polymerization is at least the above lower limit, the physical characteristics of the obtained vinyl chloride resin composition tend to be better, and when it is at least the above upper limit, the workability and moldability tend to be better. Because there is.

In the present invention, a crosslinked vinyl chloride resin containing the above-mentioned crosslinked gel can be used as the vinyl chloride resin for the purpose of controlling the design surface of the molded product. When the crosslinked vinyl chloride resin contains a crosslinked gel content insoluble in THF, the crosslinked gel content is preferably 60% by mass or less, preferably 50% by mass or less, and the average degree of polymerization of the portion dissolved in THF is described above. It is desirable that it is in the range of. As the crosslinked vinyl chloride resin, the one having the crosslinked gel content may be used as it is, or a resin having a crosslinked gel content exceeding the above gel content may be produced, and this may be appropriately mixed with the vinyl chloride resin to contain the crosslinked gel content. The content may be adjusted. When the crosslinked gel content exceeds the upper limit value, mechanical properties such as tensile strength tend to decrease. In the present invention, 2 g of the cross-linked gel insoluble in THF is added to 30 ml of THF with stirring, left at a temperature of 25 ° C. for 24 hours, and then Teflon (registered trademark) filter paper (mesh size 1 μm). ) Was filtered, and the weight of the insoluble matter after repeating this operation three times was determined as a percentage.

<Polyester plasticizer (B)>
In the vinyl chloride resin composition of the present invention, the polyester plasticizer (B) (hereinafter, may be referred to as "component (B)") is a component that contributes to antifouling property against oily stain components. , A plasticizer obtained by reacting a dibasic acid with a glycol and a terminal blocking agent, and the molecular weight thereof is preferably 600 to 8000.
Examples of the dibasic acid include adipic acid, sebacic acid, phthalic acid, azelaic acid, succinic acid, glutaric acid and the like, and examples thereof include one or a mixture of two or more thereof. Among them, adipic acid is particularly preferable. Is.
As glycols, 1,2-propanediol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 2,2-dimethyl-1,3-propanediol, 2-methyl-1 , 3-Propanediol, 3-Methyl-1,5-Pentanediol and the like.
Examples of the terminal blocking agent include higher alcohols such as 2-ethylhexanol and higher fatty acids such as lauric acid.

By using the polyester plasticizer (B) described above, it is possible to reduce the affinity with the oil-based antifouling component and obtain antifouling property against the oil-based antifouling component.

The polyester-based plasticizer (B) can also be obtained as a commercially available product. For example, the corresponding product can be selected and used from ADEKA's ADEKA Sizer (registered trademark) PN series and DIC's Polysizer (registered trademark).

As the polyester-based plasticizer (B), one type may be used alone, or two or more different types such as dibasic acid and didiol type may be mixed and used.

The vinyl chloride-based resin composition of the present invention preferably contains 10 to 100 parts by mass of the polyester-based plasticizer (B) with respect to 100 parts by mass of the vinyl chloride-based resin (A). When the content of the polyester-based plasticizer (B) is at least the above lower limit, sufficient antifouling property against oily stain components can be obtained, and it is also preferable in terms of imparting plasticity. On the other hand, when the content of the polyester-based plasticizer (B) is not more than the above upper limit, the molding processability becomes good.

<Glycerin fatty acid ester (C)>
In the glycerin-based fatty acid ester (C) used in the present invention (hereinafter, may be referred to as "component (C)"), at least one hydroxyl group in the glycerin molecule is esterified with a fatty acid having 8 to 24 carbon atoms. It contributes to antifouling property against powdery dirt components such as dust.

That is, the glycerin-based fatty acid ester (C) exhibits good antifouling property against dust and the like by blooming on the surface of the molded product. In this case, the glycerin-based fatty acid ester (C) is a monoester and has a small molecular weight, so that it is easily transferred to the surface of the molded product, and even if the content is the same, the number of molecules is larger than that of the diester or the triester. The number of molecules transferred to the surface of the molded product is large, so that the glycerin-based fatty acid ester (C) is a monoester in which only one hydroxyl group in the glycerin molecule is esterified, which is more excellent antifouling. It is preferable because it can obtain sex.

The glycerin-based fatty acid ester (C) includes a glycerin-based fatty acid monoester (C1) in which one hydroxyl group in the glycerin molecule is esterified with a fatty acid having 8 to 24 carbon atoms, and two hydroxyl groups in the glycerin molecule. A mixture (C3) of a glycerin-based fatty acid diester (C2) esterified with a fatty acid having 8 to 24 carbon atoms, or glycerin in which one hydroxyl group in the glycerin molecule is esterified with a fatty acid having 8 to 24 carbon atoms. The glycerin-based fatty acid monoester (C1) is preferable, and the glycerin-based fatty acid monoester (C1) in which one hydroxyl group in the glycerin molecule is esterified with a fatty acid having 8 to 24 carbon atoms is particularly preferably used.

The fatty acid used for esterification of the glycerin-based fatty acid ester (C) preferably has 8 to 22 carbon atoms, and is, for example, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, and 12-hydroxystearic acid. Saturated fatty acids such as acid, arachidic acid and bechenic acid, unsaturated fatty acids such as decenoic acid, undecenoic acid, dodecenoic acid, tetradecenoic acid, oleic acid, erucic acid, linoleic acid, linoleic acid and ricinolic acid can be mentioned. Of these, lauric acid, myristic acid, palmitic acid, and stearic acid are more preferable from the viewpoint of antifouling property. These fatty acids may be used alone or in combination of two or more.

The glycerin-based fatty acid ester (C) is usually obtained by adding an alkali (for example, potassium hydroxide, sodium hydroxide, potassium carbonate, sodium carbonate, etc.) as a catalyst to a mixture of fat and oil and glycerin, and any inert gas such as nitrogen or carbon dioxide. Under an active gas atmosphere, for example, heating in the range of about 180 to 260 ° C., preferably about 200 to 250 ° C. for about 0.5 to 5 hours, preferably about 1 to 3 hours for transesterification reaction, or with a fatty acid. An acid or alkali is added as a catalyst to the mixture of glycerin, and under an atmosphere of any inert gas such as nitrogen or carbon dioxide, for example, in the range of about 180 to 260 ° C., preferably about 200 to 250 ° C., about 0.5 to It can be obtained by conducting a transesterification reaction by heating for 5 hours, preferably about 1 to 3 hours, neutralizing the catalyst after completion of the reaction, and removing unreacted glycerin and triglyceride from the obtained reaction mixture. Examples of the method for removing the unreacted glycerin and triglyceride include methods known per se, such as vacuum distillation, molecular distillation, column chromatography, and liquid-liquid extraction. After removing glycerin and triglyceride, treatments such as decolorization and deodorization may be performed if desired.

As the glycerin-based fatty acid ester (C) used in the present invention, commercially available products can be used, for example, Rikemar S-100 (trade name; manufactured by RIKEN Vitamin), Rikemar S-200 (trade name; RIKEN). Examples thereof include Roxyol G15 (trade name: manufactured by Emery Oleo Chemicals), electrostripper TS-5 (trade name; manufactured by Kao), and the like.

Only one type of glycerin-based fatty acid ester (C) may be used, or two or more types having different types of fatty acids may be used in combination.

The vinyl chloride resin composition of the present invention contains 2 to 14 parts by mass of the glycerin fatty acid ester (C) with respect to 100 parts by mass of the vinyl chloride resin (A). If the content of the glycerin-based fatty acid ester (C) is less than the above lower limit, sufficient antifouling property against powdery dirt components such as dust cannot be obtained. On the other hand, when the content of the glycerin-based fatty acid ester (C) exceeds the above upper limit, a large amount of the glycerin-based fatty acid ester (C) blooms on the surface of the molded product, causing poor appearance.

<Other ingredients>
The vinyl chloride resin composition of the present invention may contain other components in addition to the component (A), the component (B) and the component (C) as long as the object of the present invention is not impaired.

For example, the vinyl chloride resin composition of the present invention is usually a well-known stabilizer, a lubricant other than the component (C), a processing aid, a filler, an impact resistance enhancer, an ultraviolet absorber, a pigment or a dye. Colorants such as, plasticizers other than component (B), heat-resistant improvers, foaming agents, antioxidants, antistatic agents, antifungal agents, antibacterial agents, flame retardants, flame retardant aids, and other well-known additives. It may be contained. These additives are used so that the effect of adding each additive can be obtained within a range that does not impair the mechanical properties and moldability of the obtained molded product.

Specifically, as stabilizers, metal soap mainly composed of inorganic salts such as tribasic lead sulfate, lead silicate and basic lead carbonate, and organic acid salts of metals such as lead, cadmium, barium, calcium and zinc. , A compound metal containing at least two of the above-mentioned metals, for example, a fatty acid complex such as Ba-Zn, Ca-Zn, Cd-Ba, or a fatty acid (phosphite) -based or carboxylate (phosphite) -based composite metal soap or composite liquid metal. Examples thereof include, but are not limited to, one kind or two or more kinds of soaps, organic tin compounds and the like.
When the stabilizer is blended in the vinyl chloride resin composition of the present invention, the blending amount of the stabilizer is 0.1 to 30 parts by mass, particularly 1 to 15 parts by mass with respect to 100 parts by mass of the vinyl chloride resin. Is preferable.

As the flame retardant, one or more of antimony trioxide, barium borate, zinc borate, zinc oxide, chlorinated polyethylene, and other halogen-based flame retardants are used.
When the flame retardant is blended in the vinyl chloride resin composition of the present invention, the blending amount of the flame retardant may be 1 to 30 parts by mass, particularly 1 to 15 parts by mass with respect to 100 parts by mass of the vinyl chloride resin. preferable.

Further, a filler can be added to the vinyl chloride resin composition of the present invention. In addition to ensuring the rigidity of the resin member, the addition of the filler also contributes to the capture of volatile components generated from the material and the cost reduction of the material itself. Examples of the filler include, but are not limited to, carbon black, calcium carbonate, titanium oxide, talc, aluminum hydroxide, magnesium hydroxide, hydrotalcite, clay, silica, white carbon and the like. One type of these fillers may be used alone, or two or more types may be used in combination. Carbon black also functions as a black pigment.

When the filler is blended in the vinyl chloride resin composition of the present invention, the blending amount of the filler is 1 to 100 parts by mass, particularly 5 to 50 parts by mass with respect to 100 parts by mass of the vinyl chloride resin (A). It is preferable to do so. If the blending amount of the filler is too small, the above-mentioned addition effect tends to be insufficient, and if it is too large, the mechanical properties and moldability tend to be impaired.

As the impact resistance enhancer, one or more of known rubber polymers such as a butadiene rubber polymer, a silicone rubber polymer, and an acrylic rubber polymer can be used.

<Manufacturing method of vinyl chloride resin composition>
In the vinyl chloride resin composition of the present invention, the component (A), the component (B) and the component (C) and various other additives used as needed are added to a predetermined kneader or mixer. It can be easily produced by uniformly mixing or kneading the vinyl chloride resin (A) while heating it to a temperature range in which the vinyl chloride resin (A) does not deteriorate, for example, a temperature of 100 to 230 ° C., preferably 130 to 200 ° C. Either a part of the components may be mixed in advance and then mixed with other components, or all the components may be mixed at once, or any method may be used. The mixer or kneader used for mixing or kneading the above-mentioned compounding components is not particularly limited as long as it is an apparatus capable of substantially uniformly mixing and kneading the compound.

Examples of the mixer include a mixer such as a Henschel mixer, a ribbon blender, a planetary mixer, and a universal mixer, and examples of the kneader include a single-screw extruder, a twin-screw extruder, and an open roll. , Banbury mixer, kneader, pressurized kneader, intensive mixer, etc. are used that can knead under shearing force while heating.

When the raw material components of the vinyl chloride resin composition are melt-kneaded to granulate pellets, it is preferable to heat-knead at a temperature of, for example, about 130 to 190 ° C.

<Use>
The molded product obtained by molding the vinyl chloride resin composition of the present invention by extrusion molding or the like is suitable for building materials, industrial materials, etc., and is particularly suitable for insect-proof packing or refrigerator gasket used for cupboards and cabinets for storing food and tableware. Can be suitably used as a member for preventing dust, liquid stains, and the like from adhering to the surface of the product.

Hereinafter, the content of the present invention will be described in more detail with reference to Examples, but the present invention is not limited to the following Examples as long as the gist of the present invention is not exceeded. The values of various production conditions and evaluation results in the following examples have meanings as preferable values of the upper limit or the lower limit in the embodiment of the present invention, and the preferable ranges are the above-mentioned upper limit or lower limit values and the following. It may be in the range specified by the value of Examples or the combination of the values of Examples.

[material]
The raw materials used for producing the vinyl chloride resin composition in the following Examples , Reference Examples and Comparative Examples are as follows.

<Ingredient (A)>
A-1: Vinyl chloride resin manufactured by Shin Daiichi PVC (average degree of polymerization: 3,500)
A-2: Vinyl chloride resin manufactured by Shin-Etsu Chemical Co., Ltd. (average degree of polymerization: 2,500)

<Ingredient (B)>
B-1: Polyester plasticizer (100 mol% of 1,2-butanediol and 1,4-butanediol combined as diol units, polyester plasticizer containing adipic acid as dibasic acid, molecular weight 1800)
b-1: Phthalate-based plasticizer (diisononyl phthalate)

<Component (C)>
C-1: Glycerin stearic acid monoester C-2: Glycerin stearic acid triester

<Component (D)>
Kao's antistatic agent "Electro Stripper (registered trademark) PC"

<Ingredient (E)>
Heavy calcium carbonate

[Examples 1 and 2 , Reference Example 3 and Comparative Examples 1 to 4]
The components of the compounding raw materials shown in Table 1 were put into a high-speed mixer in the compounding amounts shown in Table 1, stirred until the temperature reached 100 ° C., and discharged. The discharged mixture was kneaded with a mixing roll, and the sheet was molded by a press molding machine at a molding temperature of 180 ° C. and a molding pressure of 200 kg / cm ² to a thickness of 1 mm, and used as a sample for evaluation.
The following evaluation was performed on the sample sheet for this evaluation, and the results are shown in Table-1.

[Evaluation methods]
<Appearance after pressing>
The appearance of the obtained sample sheet for evaluation was visually observed to check for any defects in appearance.

<Appearance after antifouling test>
A test piece having a width of 15 mm and a length of 40 mm was punched out from the evaluation sample sheet using a forging blade.
Of the evaluation items shown in Table 1, curry and chili oil for the antifouling test were dropped on a press sheet, allowed to stand for 24 hours, washed with dish detergent, and wiped off with ethanol. Visually judged with.
Regarding the pigment in the antifouling test, the pigment was placed on a sample sheet for evaluation, and after 1 hour, the sheet was tilted to remove the pigment, and the pigment was visually judged according to the following evaluation criteria.
<Evaluation criteria>
◯: No trace is found.
Δ: Slight traces are observed.
X: Clear traces are observed.

[Discussion]
As can be seen from Table 1, the vinyl chloride resin compositions of Examples 1 and 2 and Reference Example 3 corresponding to the vinyl chloride resin composition of the present invention have an excellent appearance after pressing, and the molded product is glycerin-based. Due to the moderate blooming of the fatty acid ester (C), it is difficult for seasonings and pigments simulating stains to adhere. In particular, Examples 1 and 2 using a monoester are more excellent in antifouling property than Reference Example 3 in which a triester is used as the glycerin-based fatty acid ester (C). Since the polyester-based plasticizer (B) compounded to reduce the material hardness has high oil resistance, it has reduced affinity with oil-based foods such as curry and chili oil, and thus has antifouling properties against these stains. It will also be excellent.
Among Comparative Examples 1 to 4, Comparative Example 1 in which the glycerin-based fatty acid ester (C) was added less than 2 parts by weight, and Comparative Example 3 using a plasticizer not corresponding to the component (B) of the present invention, general. In Comparative Example 4 in which an antistatic agent was used, the antifouling property was poor.
Further, in the case of Comparative Example 2 in which the amount of the glycerin-based fatty acid ester (C) was more than 14 parts by weight, the glycerin-based fatty acid ester (C) excessively bloomed on the surface of the molded product and peeled off as a film, resulting in a poor appearance. it is conceivable that.

Claims (7)

The glycerin-based fatty acid ester (C) contains a vinyl chloride-based resin (A), a polyester-based plasticizer (B), and a glycerin-based fatty acid ester (C), and one hydroxyl group in the glycerin molecule is esterified by stearic acid . It is a mixture of a glycerin-based fatty acid monoester (C1) and a glycerin-based fatty acid diester (C2) in which two hydroxyl groups in the glycerin molecule are esterified with stearic acid , and the content of the mixed product (C3) is high. A vinyl chloride-based resin composition which is 2 to 14 parts by mass with respect to 100 parts by mass of the vinyl chloride-based resin (A). The glycerin-based fatty acid ester (C) contains a vinyl chloride-based resin (A), a polyester-based plasticizer (B), and a glycerin-based fatty acid ester (C), and one hydroxyl group in the glycerin molecule is esterified by stearic acid . A vinyl chloride resin composition which is a glycerin-based fatty acid monoester (C1) and has a content of the glycerin-based fatty acid monoester of 2 to 14 parts by mass with respect to 100 parts by mass of the vinyl chloride resin (A). The vinyl chloride resin composition according to claim 1 or 2 , wherein the content of the polyester plasticizer (B) is 10 to 100 parts by mass with respect to 100 parts by mass of the vinyl chloride resin (A). The vinyl chloride resin composition according to any one of claims 1 to 3 , wherein the vinyl chloride resin (A) is a vinyl chloride resin having an average degree of polymerization of 1,000 to 6,500. The vinyl chloride resin composition according to any one of claims 1 to 4 , which is a vinyl chloride resin composition for building materials. An insect repellent packing for a cupboard or cabinet for storing food or tableware made of the vinyl chloride resin composition according to any one of claims 1 to 5 . A refrigerator gasket member made of the vinyl chloride resin composition according to any one of claims 1 to 5 .