JP6892199B2 - Antiviral interior sheet - Google Patents

Description

The present invention relates to an interior sheet having excellent antiviral and stain resistance.

Viral diseases such as severe respiratory tract infection (SARS) virus, human and avian influenza virus, norovirus, foot-and-mouth disease virus, and new influenza virus have become social problems one after another. Influenza virus and norovirus are viral infectious diseases that prevail in winter, and influenza is said to affect more than 10 million people every year. In addition, norovirus is extremely infectious, and it is said that even a very small amount (10 to 100) of virus can infect. In order to prevent such viral infections as much as possible, antiviral products are expected not only in medical facilities such as hospitals, health centers, and nursing homes, but also in general public facilities and homes.

Slaked lime is known as an antiviral agent capable of preventing the virus from entering cells by inactivating the infectivity of the virus, and Patent Document 1 discloses a resin coating containing slaked lime. ing.

JP 2011-152102

There are two types of viruses, one with a membranous structure envelope and the other without an envelope. Influenza virus is a typical virus of the former, and norovirus is a typical virus of the latter. Since this envelope is composed of lipids, the enveloped virus can be easily destroyed with alcohol or the like. However, viruses that do not have an envelope are resistant to alcohol, so disinfectants are difficult to work with. In the antiviral resin composition, there is a possibility that the antiviral property may differ depending on the presence or absence of the envelope.
Therefore, in view of the above circumstances, it is an object of the present invention to provide an antiviral polyvinyl chloride resin composition and an antiviral sheet that exhibit antiviral properties regardless of the presence or absence of an envelope.

In the present invention, with respect to 100 parts by weight of the polyvinyl chloride resin (A), 0.1 to 10.0 parts by weight of the sulfonate surfactant (B) and 10 to 50 parts by weight of the plasticizer (C) are used. , 0.1 to 50 parts by weight of the inorganic antiviral agent (H) , and the sulfonic acid-based surfactant (B) is supported on the inorganic filler (D). ) Is added as a polyvinyl chloride resin composition.
The surfactant-supporting filler (E) preferably has a weight ratio B: D of the sulfonic acid-based surfactant (B) and the inorganic filler (D) of 1:20 to 1: 1, and is also surfactant. It is preferable that the agent-supporting filler (E) is a polyvinyl chloride resin composition having 0.1 parts by weight to 200 parts by weight with respect to 100 parts by weight of the polyvinyl chloride resin (A) .
Further, it is preferable that polyvinyl chloride resin (A) Gasa Supenjon vinyl chloride resins.
Further, an antiviral vinyl chloride resin sheet obtained by molding these antiviral vinyl chloride resin compositions can be obtained.

According to the present invention, an antiviral vinyl chloride resin composition and an antiviral sheet having excellent antiviral properties can be obtained regardless of the presence or absence of an envelope.

Hereinafter, the present invention will be described in detail.
In the embodiment of the present invention, 0.1 to 10.0 parts by weight of the sulfonate-based surfactant (B) and 10 parts by weight of the plasticizer (C) are added to 100 parts by weight of the polyvinyl chloride resin (A). It is an antiviral polyvinyl chloride resin composition containing ~ 50 parts by weight and 0.1 to 50 parts by weight of an inorganic antiviral agent (H).

The polyvinyl chloride-based resin (A) used in the antiviral polyvinyl chloride-based resin composition is a thermoplastic resin containing vinyl chloride as a main component, but may contain a copolymerization component other than vinyl chloride. .. The amount of the copolymerization component other than vinyl chloride is not particularly limited as long as it does not affect the present invention, but the content of the copolymerization monomer component is 0 to 30 mol% in all the monomer components. It is preferably 0 to 10 mol%, and more preferably 0 to 10 mol%. Specifically, polyvinyl chloride, ethylene-vinyl chloride copolymer, propylene-vinyl chloride copolymer, vinyl chloride-acrylic resin copolymer, vinyl chloride-urethane copolymer, vinyl chloride-vinylidene chloride copolymer , Vinyl chloride-vinyl acetate copolymer and the like. These polyvinyl chloride resins (A) may be used alone or in combination of two or more. Among these polyvinyl chloride-based resins (A), polyvinyl chloride is preferable in terms of workability and price.

The average degree of polymerization of the polyvinyl chloride resin (A) is not particularly limited as long as it can be substantially molded, but the average degree of polymerization is preferably in the range of 500 to 2000, and the average degree of polymerization is 700. The range of ~ 1800 is more preferable. If the average degree of polymerization is less than 500, the viscosity at the time of melting is low and it is difficult to process. If the degree of polymerization exceeds 2000, the viscosity at the time of melting is high and it may be difficult to process.

The sulfonate-based surfactant (B) is a sulfonate-based surfactant and a sulfate-based surfactant. Specifically, an alkyl sulfate ester salt such as sodium lauryl sulfate, an alkylbenzene sulfonate such as sodium dodecylbenzene sulfonate, an alkylnaphthalene sulfonate such as sodium octylnaphthalene sulfonate, an alkyldiphenyl ether disulfonate, and a polyoxyethylene alkyl sulfate. Examples thereof include ester salts and sodium sulfonate formalin condensates. Alkylbenzene sulfonate is preferable because of its high antiviral effect, and dodecylbenzene sulfonate is more preferable.
The content of the sulfonate-based surfactant (B) used in the present invention is preferably 0.1 to 10.0 parts by weight, preferably 1.0 to 10.0 parts by weight, based on 100 parts by weight of the polyvinyl chloride-based resin (A). 5.0 parts by weight is more preferable, and 2.0 to 3.0 parts by weight is particularly preferable. If the content is less than 0.1 parts by weight, the antiviral effect is poor, and if the content exceeds 10 parts by weight, the processability is poor, the surface condition becomes poor due to bleeding, and there is a possibility that contamination is likely to occur.

When the sulfonate-based surfactant (B) is added to the polyvinyl chloride-based resin (A) and the molding process is performed, the polyvinyl chloride-based resin may be colored.

Regarding the above problem, a vinyl chloride resin (Ab) for paste to which a sulfonate-based surfactant (B) is added in advance is used, or an inorganic substance in which the sulfonate-based surfactant (B) is supported is used. By using the filler, the coloring of the resin can be effectively suppressed.

The vinyl chloride resin (Ab) for paste is a fine polymer particle having a particle size of 0.02 to 20.0 μm, which is mainly obtained by an emulsion polymerization method or a microsuspension polymerization method, and is added with a plasticizer. It is a general feature that it becomes a paste.

As a method for producing the vinyl chloride-based resin (Ab) for paste, any production method can be used as long as the vinyl chloride-based resin (Ab) for paste of the present invention can be obtained, and it is the most common. As a method, an emulsion polymerization method in which a vinyl chloride-based monomer is polymerized with deionized water, an emulsifier, and a water-soluble polymerization initiator under gentle stirring, and particles obtained by the emulsion polymerization method as seeds are used as seeds for emulsion polymerization. Seed emulsion polymerization method, vinyl chloride-based monomer is mixed and dispersed with deionized water, emulsifier, emulsification aid such as higher alcohol if necessary, oil-soluble polymerization initiator with homogenizer, etc., and then polymerized under gentle stirring. Polymerization is carried out at a polymerization temperature of 30 to 80 ° C. by a microsuspension polymerization method in which the above is performed, a seed microsuspension polymerization method in which polymerization is carried out using a seed containing an oil-soluble polymerization initiator obtained by the microsuspension polymerization method, or the like. A method of producing a vinyl chloride-based resin (Ab) for paste by spray-drying the obtained latex and then pulverizing the obtained latex can be mentioned.

In the production of vinyl chloride resin (Ab) for paste, a dispersant is used in order to facilitate pulverization after spray drying. By using the sulfonate-based surfactant (B) as the dispersant, the sulfonate-based surfactant (B) is in a finely dispersed state, so that the coloring of the resin can be suppressed.

The content of the sulfonate-based surfactant (B) is preferably 0.1 to 15% by weight, more preferably 0.7 to 10% by weight, and 1.0 to 1.0% by weight in the polyvinyl chloride-based resin (Ab) for paste. 7.5% by weight is particularly preferable. If it is less than 0.1% by weight, the antiviral property of the interior sheet is poor, and if it exceeds 15% by weight, the productivity of producing vinyl chloride resin (Ab) for paste is poor.

The average degree of polymerization of the polyvinyl chloride resin (Ab) for paste is not particularly limited as long as it can be substantially molded, but the average degree of polymerization is preferably in the range of 500 to 2000, and the average degree of polymerization is preferable. More preferably, the degree is in the range of 700 to 1800. If the average degree of polymerization is less than 500, the viscosity at the time of melting is low and it is difficult to process. If the degree of polymerization exceeds 2000, the viscosity at the time of melting is high and it may be difficult to process.

When a polyvinyl chloride resin (Ab) for paste is used, it becomes a paste at room temperature when a liquid such as a plasticizer is mixed due to the characteristics of the polyvinyl chloride resin for paste, and the processing method is limited to a coating method or the like. When the resin composition is molded by a melt shaping method in which the resin composition is heated, melted, kneaded, shaped, and then cooled and solidified, it is preferably blended with a suspension vinyl chloride resin (Aa).

Here, the suspension vinyl chloride-based resin vinyl chloride-based resin (Aa) is a porous vinyl chloride-based resin having a particle size of 50 to 200 μm, which is mainly obtained by a suspension polymerization method. By having this porous shape, it is possible to absorb a liquid such as a plasticizer, so that it can be prevented from becoming a paste.

As for the blend ratio of the vinyl chloride resin (Ab) for paste and the suspension vinyl chloride resin (Aa), the sulfonate-based surfactant (B) contains 0.1 to 10.0% by weight, and molding processing is a problem. If not, the vinyl chloride resin for paste (Ab) is preferably 100 to 1% by weight, the suspension vinyl chloride resin (Aa) to 0 to 99% by weight, and the vinyl chloride resin for paste is not particularly limited. (Ab) is more preferably 70 to 10% by weight and suspension vinyl chloride resin (Ab) 30 to 90% by weight, vinyl chloride resin for paste (Ab) is 50 to 20% by weight, and suspension vinyl chloride resin (Aa). ) 50-80% by weight is most preferable.

The average degree of polymerization of the suspension polyvinyl chloride resin (Aa) is not particularly limited as long as it can be substantially molded, but the average degree of polymerization is preferably in the range of 500 to 2000, and is average. The degree of polymerization is more preferably in the range of 700 to 1800. If the average degree of polymerization is less than 500, the viscosity at the time of melting is low and it is difficult to process. If the degree of polymerization exceeds 2000, the viscosity at the time of melting is high and it may be difficult to process.

The surfactant-supporting filler (E) carrying the sulfonate-based surfactant (B) is a surface-treated surface of the inorganic filler (D) with the sulfonate-based surfactant (B). is there.

The inorganic filler (D) for surface-treating the sulfonate-based surfactant (B) is not particularly limited, and a general one can be used. Examples thereof include calcium carbonate, silica, talc, mica, clay, diatomaceous earth, alumina, titanium oxide, magnesium hydroxide, zinc oxide, calcium silicate, aluminum hydroxide and the like, and these can be used alone or in combination. Calcium carbonate and silica are preferable from the viewpoint of cost and supply, and calcium carbonate is more preferable.
Further, as the inorganic filler (D), an inorganic filler (D) that has been surface-treated for the purpose of improving compatibility with the synthetic resin may be used. Examples of the surface treatment agent include fatty acids, silicic acid, phosphoric acid, and silane coupling agents. Examples of the fatty acid include saturated or unsaturated fatty acids having 6 to 31 carbon atoms, preferably 12 to 28 carbon atoms.

Examples of the method of supporting the sulfonate-based surfactant (B) on the inorganic filler (D) include a method of spraying an aqueous solution of the sulfonate-based surfactant (B) onto the inorganic filler (D) and drying it. There is a method in which an inorganic filler (D) is added to and mixed with an aqueous solution of a sulfonic acid-based surfactant to remove water and dried, and the remaining solid content is ground with a known crusher such as a ball mill.

The weight ratio B: D of the sulfonate-based surfactant (B) and the inorganic filler (D) is preferably 1:20 to 1: 1, and preferably 1: 10 to 1: 1. More preferred. When the ratio of the sulfonate-based surfactant (B) is smaller than 1:20 of the weight ratio B: D, the sulfonate-based surfactant (B) is difficult to be uniformly supported and has antiviral properties when added. It may not be fully exerted, and if the ratio of the sulfonate-based surfactant (B) is larger than 1: 1 of the weight ratio B: D, it will be excessively supported on the surface of the inorganic filler (D) due to moisture. Since it becomes lumpy, the dispersibility becomes poor and there is a possibility that surface defects may occur during processing.

Next, in order to exhibit antiviral properties regardless of the presence or absence of an envelope, 0.1 to 50 parts by weight of the inorganic antiviral agent (H) is contained with respect to 100 parts by weight of the polyvinyl chloride resin (A). This is very important.

The antiviral polyvinyl chloride resin composition containing the sulfonate-based surfactant (B) exhibits an antiviral effect in a short time against viruses such as bird influenza virus, which is an enveloped virus. , It tends to be difficult to show sufficient performance in a short time against viruses such as Nekokarishi virus, which is a virus without an envelope.
On the other hand, the inorganic antiviral agent (H) shows an antiviral effect in a short time against the non-enveloped virus Nekokarishi virus, but in a short time against the enveloped virus bird influenza virus. It tends to be difficult to show a sufficient effect.

Here, by adding both the sulfonate-based surfactant (B) and the inorganic antiviral agent (H) to the vinyl chloride resin, antiviral properties are exhibited in a short time regardless of the presence or absence of an envelope. An antiviral polyvinyl chloride resin composition can be obtained.

Examples of the inorganic antiviral agent (H) include a photocatalyst, a metal compound, and an inorganic compound, and examples of the photocatalyst include a composite in which copper, iron, or the like is supported on titanium oxide, tungsten oxide, or the like. Examples of the metal compound include a compound containing silver ions and the like, and a combination of metal ions and a porous inorganic substance such as zeolite, silica gel, or diatomaceous earth. Examples of the inorganic compound include calcium hydroxide such as slaked lime and dolomite. The inorganic antiviral agent (H) to be used may be used alone or in combination of a plurality of types.

The amount of the inorganic antiviral agent (H) added is 0.1 to 50 parts by weight with respect to 100 parts by weight of the polyvinyl chloride resin (A). If the amount of the inorganic antiviral agent (H) added is 50 parts by weight or more, the processability is remarkably lowered, and if it is less than 0.1 parts by weight, sufficient antiviral properties are not obtained. The amount added to obtain satisfactory processability and antiviral property as an antiviral polyvinyl chloride resin composition is 0.1 to 50 parts by weight, preferably 1 to 10 parts by weight.

By increasing the amount of the sulfonate-based surfactant (B) or the inorganic antiviral agent (H) added, the antiviral property can be enhanced, and there is a possibility that high antiviral property can be obtained regardless of the presence or absence of an envelope. is there. However, if the amount of the sulfonate-based surfactant (B) added is increased too much, the thermal stability of the polyvinyl chloride resin during processing is lowered, and problems such as plate-out to the processing machine are likely to occur. Further, if the addition amount of the inorganic antiviral agent (H) is increased too much, the processability of the polyvinyl chloride resin composition may be lowered, or the mechanical properties and transparency of the molded product may be inferior to the desired performance. is there. Further, the photocatalyst and the silver-based inorganic antiviral agent (H) are generally expensive, and the cost of the polyvinyl chloride resin composition to which these are added is increased, which is not preferable.
Therefore, instead of adding a high amount of the sulfonate-based surfactant (B) or the inorganic antiviral agent (H), the sulfonate-based surfactant (B) and the inorganic antiviral agent (H) are used. By using in combination, high antiviral properties can be obtained regardless of the presence or absence of an envelope.

As the plasticizer (C), a normal plasticizer can be used. For example, phthalate ester plasticizers such as DOP (di-2-ethylhexyl phthalate), DINP (diisononyl phthalate), DIDP (diisodecyl phthalate), dioctyl terephthalate (DOTP), DOA (di-2-ethylhexyl adipate), DIDA Adiponic acid ester plasticizers such as (diisodecyl adipate), sebacic acid ester plasticizers such as DOS (di-2-ethylhexyl sebacate), and azelaic acid ester plasticizers such as DOZ (di-2-ethylhexyl azelate). Such as aliphatic dibasic acid ester plasticizers, tricresyl phosphate, trixylenyl phosphate, cresyldiphenyl phosphate, tris (isopropylized phenyl) phosphate, tris (isopropylylated phenyl) phosphate, and other phosphate ester plasticizers, polyester. Examples thereof include plasticizers, epoxy plasticizers, and sulfonic acid ester plasticizers. Examples thereof include phthalate ester plasticizers having good compatibility with vinyl chloride resins and polyester plasticizers having a high molecular weight. The plasticizer (C) may be used alone or in combination of two or more.

The amount of the plasticizer (C) added is preferably 10 to 50 parts by weight with respect to 100 parts by weight of the polyvinyl chloride resin (A). If the amount of the plasticizer (C) added exceeds 50 parts by weight, it tends to form a paste, and the handleability of the resin composition before heating and melting may be inferior. If it is less than 10 parts by weight, processing may become difficult. The amount of the plasticizer (C) added is preferably 10 to 40 parts by weight, more preferably 20 to 40 parts by weight.

The filler (I) can be added to the antiviral polyvinyl chloride resin composition for the purpose of improving processability and the like. The filler (I) includes calcium carbonate, silica, plate-like fillers such as talc and mica, clays such as bentonite and calcined kaolin, metal oxides such as magnesium oxide and alumina, magnesium hydroxide and aluminum hydroxide. Inorganic fillers such as metal hydroxide can be used. The filler (I) may be subjected to various surface treatments such as fatty acids and modified fatty acids in order to enhance the affinity with the vinyl chloride resin.

The amount of the filler (I) added is preferably 1 to 100 parts by weight with respect to 100 parts by weight of the polyvinyl chloride resin (A). If the amount of the filler (I) added exceeds 100 parts by weight, the smoothness of the surface of a molded body such as a sheet obtained by molding the antiviral polyvinyl chloride resin composition may be inferior. On the other hand, if it is less than 1 part by weight, the effect of improving workability may not be obtained. The amount of the filler (I) added is preferably 5 to 30 parts by weight, more preferably 10 to 20 parts by weight. When transparency is required, the amount of filler (I) added is preferably 1 to 5 parts by weight.

It is preferable to add an acrylic polymer processing aid to the interior sheet for the purpose of improving workability. Examples of the acrylic polymer processing aid include an acrylic polymer processing aid such as a methyl methacrylate-alkyl acrylate copolymer such as a methyl methacrylate-butyl acrylate copolymer.
By adding an acrylic polymer processing aid, rotational flow and degassing in the bank during roll molding and calendar molding are improved, and plate-out is suppressed, so that a sheet with a good appearance can be obtained.

The antiviral polyvinyl chloride resin composition contains β-diketones and anions of inorganic compounds containing elements of Groups 13, 15 and 17 of the Periodic Table in order to further prevent coloring during processing. , It is preferable to add a color inhibitor composed of a combination of the elements of Group 1, Group 2 and Group 12 of the periodic table, and among these, a perchlorate-based color inhibitor is particularly preferable. ..
Examples of perchlorate-based color inhibitors include lithium perchlorate, sodium perchlorate, potassium perchlorate, strontium perchlorate, magnesium perchlorate, calcium perchlorate, barium perchlorate, and perchloric acid. Examples include ammonium. Of these, sodium perchlorate and potassium perchlorate are preferably used. These perchlorates may be anhydrous or hydrous salts, and may be those dissolved in alcohol-based and ester-based solvents such as butyl diglycol and butyl diglycol adipate, and their dehydrated products. Further, a perchloric acid-containing hydrotalcite obtained by treating hydrotalcite with perchloric acid may be used.
The amount of the colorant added is preferably 0.1 to 0.5 parts by weight with respect to 100 parts by weight of the polyvinyl chloride resin (A).

Also, if necessary, stabilizers, antioxidants, UV absorbers, light stabilizers, UV shields, antistatic agents, flame retardants, thickeners, surfactants, fluorescent agents, cross-linking agents, impact improvers. Other compounding agents that are generally added to the resin may be added.

The antiviral polyvinyl chloride resin composition is prepared by mixing a polyvinyl chloride resin (A), a sulfonate surfactant (B), and an inorganic antiviral agent (H) using a known manufacturing apparatus. It can be manufactured by doing. For example, as the polyvinyl chloride resin (A), a vinyl chloride resin (Ab) for paste, a suspension vinyl chloride resin (Aa), a sulfonate-based surfactant (B), and an inorganic antiviral agent (H). Can be manufactured by uniformly mixing with a high-speed stirrer, a low-speed stirrer, a henschel mixer, a ribbon blender, or the like. Further, the mixture obtained by mixing may be melt-mixed by a batch type kneading mixer, a Banbury mixer, a conider, an extruder or the like, and immediately molded. Further, after melt-mixing, pelletization may be performed once, and then molding may be performed. Additives such as the plasticizer (C), the stabilizer, and the filler (I) can be arbitrarily added according to the respective uses.

Here, when the sulfonate-based surfactant (B) is added at the stage of producing the vinyl chloride-based resin (Ab) for paste, the chloride for paste to which the sulfonate-based surfactant (B) is added An antiviral polyvinyl chloride resin composition can be obtained by mixing a vinyl resin (Ab), a suspension vinyl chloride resin (Aa), and an inorganic antiviral agent (H).
On the other hand, when the surfactant-supporting filler (E) carrying the sulfonate-based surfactant (B) is used, the suspension vinyl chloride-based resin (Aa) and the sulfonate-based surfactant (B) are used. An antiviral polyvinyl chloride resin composition can be obtained by mixing the carried surfactant-supporting filler (E) and the inorganic antiviral agent (H).
Further, it may be dissolved and mixed in the same manner as described above, or it may be pelletized.

The antiviral polyvinyl chloride resin composition can be melt-formed to obtain an antiviral polyvinyl chloride resin molded product. Examples thereof include a melt shaping method such as a roll molding method, a calender molding method, an extrusion molding method, and a press molding method, and a coating method. From the viewpoint of speed and thickness accuracy of the obtained sheet, the melt shaping method is preferable, and the calender molding method is preferable.

Hereinafter, the present invention will be specifically described with reference to Examples, but the present invention is not limited to these Examples.

Specific substance names of each combination drug used in Examples and Comparative Examples are as follows.
Polychlorinated Vinyl Chloride Resin Aa-1: Suspension Vinyl Chloride Resin (Aa) Average Degree of Polymerization 1000
(Product name: TH-1000, manufactured by Taiyo PVC Co., Ltd.)
Polyvinyl chloride resin Ab-1: Vinyl chloride resin for paste (Ab) Average degree of polymerization 850
(Na 5.0% by weight of alkylbenzene sulfonate)
Sulfonate-based surfactant B-1: Sodium alkylbenzene sulfonate Purity 90%
(Product name: NANSA HS90 / S, manufactured by Huntsman Japan)
Plasticizer C-1: Di-2-ethylhexyl phthalate Inorganic filler D-1: Heavy calcium carbonate carrier E-1: B: D = 1: 3
Stabilizer F-1: Ba-Zn-based metal soap Anti-coloring agent G-1: Sodium perchlorate (trade name: Adecaster CPL-46, manufactured by Asahi Denka Kogyo Co., Ltd.)
Inorganic antiviral agent H-1: Titanium oxide + copper compound photocatalyst (trade name: Lumiresh CT-2, manufactured by Showa Denko KK)
Inorganic antiviral agent H-2: Silver ion + zeolite complex (trade name: Zeomic, manufactured by Sinanen Co., Ltd.)
Inorganic antiviral agent H-3: Silver ion complex (trade name: PBM-H7, manufactured by MIC)
Inorganic antiviral agent H-4: Calcium hydroxide calcined product (trade name: Scullow, manufactured by Antibacterial Research Institute)
Inorganic antiviral agent H-5: Dolomite (trade name; light-baked dolomite, Yoshizawa Lime Industry Co., Ltd.)
Filler I-1: Light calcium carbonate (fatty acid treatment)
(Product name; TP-111, manufactured by Okutama Kogyo Co., Ltd.)

The surfactant-supporting filler (E) is prepared by adding the inorganic filler (D) to a 50 wt% aqueous solution of the sulfonate-based surfactant (B), stirring the mixture, evaporating the water content, and removing the remaining solid content from a dairy pot. Made by grinding.

The formulations of Examples and Comparative Examples shown in Tables 1 to 4 were kneaded with a batch mixer set at 150 ° C. for 5 minutes. Then, it was formed into a sheet having a thickness of 0.35 mm with two rolls set at 180 ° C. to prepare a vinyl chloride resin sheet. The antiviral property, processability and yellowness of each vinyl chloride resin sheet were evaluated.

<Antiviral property>
Test virus J-1: Avian influenza virus A / whistling swan / Shimane / 499/83 (H5N3) strain. (Envelope virus)
Test virus J-2: Feline calicivirus F9 strain. (Unenveloped virus)

Place the vinyl chloride resin sheet 5 cm × 5 cm prepared in Examples and Comparative Examples shown in Tables 1 to 4 on a petri dish, place 0.2 ml of the test virus solution on the surface of the vinyl chloride resin sheet, and place the test virus solution on the petri dish. Was covered with a 4 cm × 4 cm polyethylene film, the petri dish was covered, and the petri dish was allowed to stand in an incubator set at 20 ° C. for an arbitrary time. After standing, the virus solution on the surface of the vinyl chloride resin sheet was collected and the virus titer was measured.

In the test against avian influenza virus, the virus titer was measured by inoculating 0.1 ml of the above virus solution into the serous membrane cavity of a 10-day-old grown chicken egg, culturing the grown chicken egg at 37 ° C. for 2 days, and then in the serous membrane cavity. The presence or absence of virus proliferation was determined by an hemagglutination test. The antiviral property was evaluated by the virus titer (50% chicken fetal infection amount (logEID50 / 0.2 ml)) calculated by the Red & Muench method.
In the test against feline calicivirus, the virus titer (PFUlog / 0.1 ml) calculated by the plaque method was used for evaluation.
In addition, the virus titer of the test virus solution before the test (before contact with the vinyl chloride resin sheet) as a blank was also calculated by the same procedure as each test method. The antiviral property of the vinyl chloride resin sheet is evaluated by the virus titer reduction value. The virus titer reduction value is calculated by the following formula.
"Virus titer reduction value" = "Virus titer before test"-"Virus titer after test"
Here, it is shown that the larger the virus titer reduction value is, the stronger the antiviral property is.

⊚: Virus titer reduction value = 4 or more ○: Virus titer reduction value = 3-4
Δ: Virus titer reduction value = 1-3
×: Virus titer reduction value = 1 or less

<Workability>
The roll processability when the sheet was formed by two rolls set at 180 ° C. was evaluated.
◎: Good ○: Can be processed without problems △: Slightly bad but can be processed ×: Cannot be processed

<Yellowness>
The yellowness was determined in accordance with JIS K 7373 using a "SM color computer" manufactured by Suga Test Instruments Co., Ltd.

As is clear from Tables 1 to 4 above, by adding the sulfonate-based surfactant (B) and the inorganic antiviral agent (H) at the same time, antiviral properties are imparted regardless of the presence or absence of an envelope. You can see that.

According to the present invention, since it has high antiviral properties regardless of the presence or absence of a virus envelope, housing / facilities such as hospitals, nursing homes, nursing homes, schools, kindergartens, public halls, stations, houses, and condominiums, etc. It can be used for vinyl chloride resin building materials such as wallpaper, floor materials, ceiling materials, curtains, and handrails. In addition, the antiviral polyvinyl chloride resin composition is processed into a sheet, and by secondary processing such as cutting, heat welding or solvent welding, protective clothing, protective clothing, protective apron, hat, gloves, foot cover, rain It can also be processed into a shape such as a coat.
Further, as a preparation for the occurrence of a pandemic, it can be used as a protective clothing for defense, a protective suit, and an interior sheet for an outpatient fever, an infectious disease, or a tent for droplet infection.

Claims (5)

0.1 to 10 parts by weight of the sulfonate surfactant (B), 10 to 50 parts by weight of the plasticizer (C), and an inorganic antivirus with respect to 100 parts by weight of the polyvinyl chloride resin (A). The agent (H) contains 1 to 50 parts by weight, and the sulfonic acid-based surfactant (B) is added as the surfactant-supporting filler (E) supported on the inorganic filler (D). An antiviral polyvinyl chloride resin composition comprising. The supporting a surfactant filler (E), the sulfonate-based surfactant (B) is an inorganic filler (D) B: D = 1 : 20~1: by comprising supported at a ratio of 1 The antiviral polyvinyl chloride resin composition according to claim 1. The invention according to claim 1 or 2 , wherein the surfactant-supporting filler (E) is contained in an amount of 0.1 to 200 parts by weight based on 100 parts by weight of the polyvinyl chloride resin (A). Antiviral polyvinyl chloride resin composition. The polyvinyl chloride resin composition according to any one of claims 1 to 3, wherein the polyvinyl chloride resin (A) is a suspension vinyl chloride resin (Aa). An antiviral vinyl chloride resin sheet molded by using the antiviral vinyl chloride resin composition according to any one of claims 1 to 4.