JP2022118980A - cleaning sheet - Google Patents

Abstract

To provide a cleaning sheet that exhibits excellent sterilization and virus inactivation and can impart antifouling property to a substance to be cleaned.SOLUTION: A cleaning sheet has a base sheet impregnated with an aqueous disinfectant, and the aqueous disinfectant comprises a quaternary ammonium salt-type surfactant as a component (A), a cationic polymer as a component (B), and water as a component (C), and a mass ratio of component (A) to component (B) is 0.005 or more and 5000 or less as a value of (A)/(B).SELECTED DRAWING: None

Description

TECHNICAL FIELD The present invention relates to a cleaning sheet capable of imparting excellent antifouling properties to an object to be wiped, in addition to the effects of sterilizing bacteria and fungi and inactivating viruses.

A so-called wet sheet (cleaning sheet), which is made by impregnating a base material such as a non-woven fabric with an aqueous composition, is simple, easy to use, and disposable. It is used for environmental maintenance in kitchens and medical facilities.

As a conventional wet wipe, not only does it physically remove dirt from the object to be wiped, but it also enhances the adsorption of dirt to the substrate by blending various polymers into the aqueous composition that impregnates the substrate. , or an aqueous composition impregnated in a base material with an antibacterial component added to enhance the removal of bacteria and fungi.

For example, a specific example of a conventional wet wipe relates to surface wiping comprising an absorbent flexible substrate of fibrous material treated with cationic polyacrylamide, a cationic polymeric soil adsorbent, and optionally carrying a cleaning agent. In addition to a product (Patent Document 1 below), a cleaning sheet (Patent Document 2 below) in which a nonwoven fabric is impregnated with an aqueous detergent containing at least an antistatic agent and a thickening agent, and a quaternary ammonium salt-type surfactant, A cleaning sheet impregnated with at least one selected from an inorganic electrolyte, an organic acid, and an organic acid salt, and an aminocarboxylic acid-type chelating agent (Patent Document 3 below).

JP-A-61-501208 JP-A-2003-164407 JP 2018-090564 A

In recent years, there has been a demand for further effects in wiping operations using wet wipes. Specifically, from the viewpoint of improving the sanitary environment and reducing the burden on workers, there is a demand for wet wipes that exhibit antifouling properties that make it easier to remove even if dirt adheres to the object to be wiped after wiping. .
However, Patent Documents 1 to 3 do not disclose the technical problem itself of imparting the above-mentioned antifouling property to the object to be wiped by wiping with a wet sheet.

Specifically, in Patent Document 1, although the above-mentioned product exerts a certain effect on the cleaning property of the dirt on the object to be wiped, it is about whether it exhibits the effect of sterilization and virus inactivation. There is no indication as to whether or not to impart antifouling properties that make it easier to remove stains adhered to the object to be wiped after wiping.
Patent Literature 2 describes that the cleaning sheet can collect and remove dust and dirt, and can impart antifouling properties to objects to be wiped. However, the term "anti-fouling property" indicated in the same document means imparting an anti-fouling property to the object to be cleaned against stains caused by static electricity. It does not refer to the property of making it easy to remove.
Also, the cleaning sheet described in Cited Document 3 exhibits sterilization and virus inactivation, but does not exhibit antifouling properties.
In other words, the conventional wet wipes represented by these documents could not meet the demand for imparting antifouling properties to the objects to be wiped.

The present invention has been made in view of the above problems. That is, it is an object of the present invention to provide a cleaning sheet that exhibits excellent sterilization and virus inactivation properties and that can impart antifouling properties to objects to be cleaned.

In order to solve the above problems, the present inventors have made intensive studies and found that using a quaternary ammonium salt-type surfactant as the component (A) and a cationized polymer as the component (B), the components (A) and ( It was found that a cleaning sheet in which a base sheet is impregnated with an aqueous disinfectant containing component B) in a specific range exhibits excellent disinfection, virus inactivation, and antifouling properties. I have perfected my invention.

That is, the present invention provides a cleaning sheet comprising a base sheet impregnated with an aqueous disinfectant, wherein the aqueous disinfectant comprises (A) a quaternary ammonium salt surfactant as component (B ) as a cationized polymer and water as a (C) component, and the mass ratio of the (A) component and the (B) component is 0.005 or more and 5000 or less as a value of (A)/(B) characterized by being

The cleaning sheet of the present invention having such a configuration exhibits excellent sterilization and virus inactivation properties, and can impart antifouling properties to the surfaces of objects to be wiped.

The cleaning sheet of the present invention will be described below.
Some terms related to the present invention have the following meanings. The sterilization property means the ability to remove bacteria and/or fungi from the surface of an object to be wiped when the cleaning sheet is used to wipe the object. Further, the antifungal property means the property of preventing the generation of mold on the base material of the cleaning sheet. Virus inactivation means virus removability and/or inactivation on the surface of an object to be wiped. Further, the antifouling property means a property that makes it possible to easily remove stains adhering to the surface of the object to be wiped after wiping. The term "corrosion inhibiting property" refers to the property of inhibiting the occurrence of metal corrosion on an object to be wiped when the aqueous disinfectant in the cleaning sheet adheres to the object to be wiped.

The cleaning sheet of the present invention is a cleaning sheet comprising a base sheet impregnated with an aqueous disinfectant. In the present invention, the aqueous disinfectant impregnated into the base sheet contains a quaternary ammonium salt-type surfactant as component (A), a cationized polymer as component (B), and water as component (C). do. In the present invention, the mass ratio of the component (A) to the component (B) is 0.005 or more and 5000 or less as a value of (A)/(B).

The cleaning sheet of the present invention not only has excellent sterilizing properties and virus inactivating properties, but also has excellent antifouling properties. Therefore, the surface of an object to be cleaned that has been wiped with the cleaning sheet of the present invention is not only excellent in hygiene immediately after wiping, but also can be easily cleaned even if dirt adheres after wiping. Therefore, the hygiene of the surface can be easily maintained continuously by a simple operation. Therefore, by using the cleaning sheet of the present invention, it is possible to further improve the sanitary environment and reduce the burden on workers. The cleaning sheet of the present invention exhibiting such effects can be sufficiently used not only for household use but also for medical and commercial use.

For example, when oil adheres to the surface of an object wiped with the cleaning sheet of the present invention, the oil can be washed away with running water. In the present invention, such excellent antifouling property is exhibited not only when the surface of the object to be wiped is made of a hydrophilic material but also when it is made of a hydrophobic material. Therefore, the cleaning sheet of the present invention can exhibit excellent effects regardless of the material of the surface of the object to be wiped, and has high versatility.

(base material sheet)
The cleaning sheet of the present invention includes a base sheet. The cleaning sheet of the present invention may be a single-layer sheet consisting essentially of a substrate sheet alone, or may be a laminated sheet of two or more layers formed by laminating a substrate sheet and an arbitrary sheet. good. Further, base sheets made of different members may be laminated.
In the present invention, the form of the base sheet impregnated with the aqueous disinfectant is not particularly limited. It can be formed in a form in which the sheet is folded in half.

The base sheet may be any sheet that can appropriately retain the impregnated aqueous disinfectant. Specifically, examples of the base sheet include nonwoven fabrics, woven fabrics, net fabrics, and the like made of regenerated fibers, synthetic fibers, natural fibers, and mixed fibers thereof.

From the viewpoint that the base sheet becomes hydrophilic, the impregnated amount of the water-based disinfectant can be increased, and effects such as good disinfection, virus inactivation, and antifouling properties are exhibited, the base sheet is recycled. It is preferably a sheet containing fibers, and the ratio of recycled fibers in 100% by mass of fibers constituting the base sheet is more preferably 10% by mass or more, further preferably 50% by mass or more, and 50% by mass. % is more preferable.
The amount of the water-based disinfectant impregnated into the base sheet is usually about 20 to 120 parts by weight per 100 parts by weight of the fibers constituting the base sheet. can increase the impregnation amount of the aqueous disinfectant into the base sheet. For example, a base sheet containing 50% by mass or more of recycled fibers in 100% by mass of fibers constituting the base sheet has an impregnated amount of the aqueous disinfectant of 150 parts by mass per 100 parts by mass of the fibers constituting the base sheet. Above, it is possible to set it as the range of 350 mass parts or less.
In addition, a base sheet containing regenerated fibers is preferable from the viewpoint of improving the feeling of use and preventing abrasion of the surface to be cleaned.

Here, the regenerated fiber refers to a product obtained by dissolving a natural polymer compound into a solution, passing the solution through a spinneret, and preventing it from spinning. Examples of natural polymer compounds include cellulosic materials using cellulosic materials such as wood, cotton and hemp, and protein materials using proteinaceous materials such as milk, corn and peanuts.
Regenerated fibers made with cellulosic materials include rayon fibers, including rayon, polynosic, and cupro, lyocell fibers, and acetate fibers. It preferably contains rayon fibers from the viewpoint of excellent antifungal properties and chemical resistance, and more preferably contains more than 50% by mass of rayon fibers in 100% by mass of fibers constituting the base sheet.

Other fibers that constitute the base sheet in combination with the above-mentioned regenerated fibers are not particularly limited. fibers.

(Aqueous disinfectant)
Next, the aqueous disinfectant in the present invention will be explained. The aqueous disinfectant contains a quaternary ammonium salt-type surfactant as component (A), a cationized polymer as component (B), and water as component (C). is adjusted so that the value of (A)/(B), which is the mass ratio of , falls within a specific range.

(A) Component:
The component (A) contained in the aqueous disinfectant of the present invention is considered to be a composition capable of exhibiting excellent effects on disinfection and virus inactivation.
The quaternary ammonium salt-type surfactants as component (A) include dialkyldimethylammonium salts, alkyldimethylbenzylammonium salts, alkyltrimethylammonium salts, alkyldimethylethylammonium salts, dialkylethylmethylammonium salts, and dialkylmonomethylhydroxyammonium salts. salts, alkyldimethylhydroxyethylammonium salts, alkylbenzyldimethylammonium salts, alkyldipolyoxyethylenemethylammonium salts, alkyldipolyoxyethylenemethylammonium salts, ethylbenzylammonium salts, alkylpyridinium salts and benzethonium salts. Here, the alkyl group includes an alkyl group having 4 or more and 22 or less carbon atoms, preferably a linear alkyl group having 6 or more and 18 or less carbon atoms. Specific examples include butyl, hexyl, octyl, decyl, dodecyl, tetradecyl, hexadecyl, heptadecyl, octadecyl, eicosyl and docosyl, and more preferably octyl and decyl. Salts include chloride ions, bromide ions, alkyl sulfate ions having 1 or 2 carbon atoms, fatty acid ions having 1 to 12 carbon atoms, and 1 to 3 alkyl groups having 1 to 3 carbon atoms. An optional benzenesulfonate ion is preferred. (A) Component can be used 1 type or in combination of 2 or more types.

More specific examples of the component (A) above include octyldecyldimethylammonium chloride, dialkyldimethylammonium chloride, alkyldimethylbenzylammonium chloride, hexadecyltrimethylammonium chloride, didecylmonomethylhydroxyethylammonium chloride, didecyl monomethylhydroxyethylammonium adipate, didecylmonomethylhydroxyethylammonium gluconate, didecylmonomethylhydroxyethylammonium sulfonate, 1,4-bis(3,3'-(1-decylpyridinium)methyloxy)butane dibromide, N,N '-Hexamethylenebis(4-carbamoyl-1-decylpyridinium bromide), alkyldimethylhydroxyethylammonium chloride, alkyltrimethylammonium chloride, alkyldimethylethylammonium ethylsulfate, dialkyldimethylammonium methosulfate, octyldecyldimethylammonium methosulfate, alkyl dimethylbenzylammonium methosulfate, cetylpyridinium chloride, ethylbenzylammonium chloride, decylisononyldimethylammonium chloride, didecylmethylpolyoxyethyleneammonium propionate, benzethonium chloride, alkylpyridinium chloride and the like.

In particular, alkyldimethylbenzylammonium salts such as alkyldimethylbenzylammonium chloride are used as the component (A) from the viewpoint that better sterilization and virus inactivation can be achieved by using them together with the component (B), which will be described later. , benzethonium salts such as benzethonium chloride, dialkyldimethylammonium salts such as dialkyldimethylammonium chloride, alkyltrimethylammonium salts such as alkyltrimethylammonium chloride, ethylbenzylammonium salts such as ethylbenzylammonium chloride, and alkylpyridinium salts such as alkylpyridinium chloride. It is preferable to include any one or more selected from.
Among these, compounds in which the alkyl group has 8 to 16 carbon atoms are preferred. In the present invention, component (A) may be a single compound having an alkyl group having 8 to 16 carbon atoms, or any two compounds having an alkyl group having 8 to 16 carbon atoms. Combinations of the above compounds may also be used.

The component (A) in the aqueous disinfectant impregnated in the base sheet is preferably 0.005% by mass or more and 5.0% by mass or less, and more preferably 0.01% by mass or more and 2.0% by mass. It is more preferably 0.08% by mass or more and 1.5% by mass or less. If the content of component (A) in the water-based disinfectant is less than 0.005% by mass, the sterilization and virus inactivation effects may decrease, and the detergency and antifungal properties may not be sufficient. be. On the other hand, when the component (A) is contained in the aqueous disinfectant in an amount exceeding 5.0% by mass, although the disinfecting and virus-inactivating effects are well exhibited, foaming, stickiness, watery, A feeling of use such as a stiff feeling may be deteriorated.

(B) Component:
The cationized polymer used as component (B) is believed to be involved in the antifouling property of the surface of the object to be wiped.
Component (B) can be appropriately selected from known cationic polymers. Examples of the cationized polymer include cationized cellulose, cationized starch, cationized guar gum, cationized polyvinylpyrrolidone, cationized tamarind, a homopolymer composed of a monomer represented by the following general formula (1), and a ) are examples of cationic polymers preferably used as the component (B).

（上記一般式（１）中、Ｒ^１及びＲ^２は、それぞれ独立して水素原子又は炭素数１～３のアルキル基を表し、Ｒ^４は炭素数１～８のアルキレン基を表し、Ｒ^５、Ｒ^６及びＲ^７はそれぞれ独立して水素原子、炭素数１～３のアルキル基を表し、Ｒ^３は水素原子又は炭素数１～３のアルキル基又は－Ｒ^４－Ｃ（Ｒ^５）＝ＣＲ^６Ｒ^７を表し、Ｘ^－は陰イオン基を表す）

(In general formula (1) above, R ¹ and R ² each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R ⁴ represents an alkylene group having 1 to 8 carbon atoms, and R ⁵ , R ⁶ and R ⁷ each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and R ³ is a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or —R ⁴ —C(R ⁵ )= represents CR ⁶ R ⁷ and X ⁻ represents an anionic group)

Cationized cellulose refers to all modified celluloses having cationic groups. In the present invention, there is no particular limitation, and commercially available known cationized cellulose can be used. Commercially available cationized celluloses include Leogard LP, Leogard G, Leogard GP manufactured by Lion Specialty Chemicals, and UCARE (registered trademark) Polymer JR-400 and UCARE (registered trademark) Polymer JR manufactured by Dow Chemicals. -125 and the like.
Although the weight average molecular weight of the cationized cellulose used in the present invention is not particularly limited, it is generally 10,000 to 5,000,000, preferably 20,000 to 2,000,000.

Cationic starch refers to all modified starches obtained by reacting a cationizing agent with starch.
In the present invention, there is no particular limitation, and commercially available known cationized starch can be used. Examples of commercially available cationized starches include Neotac 40T manufactured by Nihon Shokuhin Kako Co., Ltd. and POSIT series manufactured by Sansho.
The weight average molecular weight of the cationized starch used in the present invention is not particularly limited, but is generally 1,000 to 5,000,000, preferably 5,000 to 3,000,000.

Cationized guar gum refers to polysaccharides (guar gum) obtained from the seeds of annual leguminous plants cultivated in Pakistan and India, whose scientific name is Cyamopsis tetragonoloba, denatured with a cationizing agent. .
In the present invention, it is not particularly limited, and commercially available known cationized guar gum can be used. Examples of commercially available cationized guar gums include Labor Gum CG-M series manufactured by DSP Gokyo Food & Chemicals and Jaguar C-13S manufactured by Solvay.
The weight average molecular weight of the cationized guar gum used in the present invention is not particularly limited, but is generally 5,000 to 5,000,000, preferably 10,000 to 3,000,000.

Cationized polyvinylpyrrolidone refers to all polyvinylpyrrolidone modified with a cationizing agent. In the present invention, there is no particular limitation, and commercially available known cationized polyvinylpyrrolidone can be used. Commercially available cationized polyvinylpyrrolidone includes GAFQUAT 743 manufactured by Ashland.
The weight average molecular weight of the cationized polyvinylpyrrolidone used in the present invention is not particularly limited, but is generally 5,000 to 3,000,000, preferably 10,000 to 2,000,000.

Cationized tamarind refers to all polysaccharides (tamarind gum) obtained from fruits of evergreen trees grown in Thailand and India, whose scientific name is Tamarindus indica, modified with a cationizing agent.
In the present invention, there is no particular limitation, and commercially available known cationized tamarind can be used. Examples of commercially available cationized tamarind include Catinal CTM-200S manufactured by Toho Chemical Industry Co., Ltd.
Although the weight average molecular weight of the cationized tamarind used in the present invention is not particularly limited, it is generally 100,000 to 3,000,000, preferably 200,000 to 1,000,000.

Among the cationic polymers described above, cationic cellulose, cationic starch, and cationic guar gum are preferred examples of the component (B).
Further, as the cationized polymer represented by the general formula (1), a homopolymer composed of the monomer represented by the general formula (1) and a copolymer containing the monomer represented by the general formula (1) are used as the component (B). more preferred. Specific examples of homopolymers composed of monomers represented by general formula (1) include diallyldimethylammonium chloride and the like, and specific examples of copolymers containing monomers represented by general formula (1) include chloride Examples include copolymers of diallyldimethylammonium and acrylamide.
Among them, a homopolymer of diallyldimethylammonium chloride can impart excellent antifouling properties to both hydrophilic and hydrophobic objects. Especially preferred.
The weight average molecular weight of the cationized polymer represented by formula (1) is not particularly limited, but is preferably 500 to 1,000,000, more preferably 1,000 to 500,000, still more preferably 5,000 to 100,000.
The aqueous disinfectant in the present invention contains one or more cationic polymers described above as the component (B).

The component (B) in the aqueous disinfectant impregnated in the base sheet is preferably 0.001% by mass or more and 1.0% by mass or less, and preferably 0.005% by mass or more and 0.5% by mass. It is more preferably 0.01% by mass or more and 0.3% by mass or less. If the content of component (B) is less than 0.005% by mass, good antifouling properties may not be exhibited, and if it exceeds 1.0% by mass, the feeling of use of the cleaning sheet may be insufficient.

From the viewpoint of better improving the antifouling property on the hydrophobic surface, the water-based disinfectant impregnated in the base sheet contains a cationized polymer having a relatively small weight-average molecular weight as the component (B), A cationized polymer having a relatively large weight average molecular weight is preferably contained.
Specifically, the weight average molecular weight of the cationized polymer having a relatively small weight average molecular weight is preferably 500 or more and less than 20000, more preferably 1000 or more and 15000 or less, and 3000 or more and 12000 or less. is particularly preferred.
Further, the weight average molecular weight of the cationized polymer having a relatively large weight average molecular weight is specifically preferably 20000 or more and 2000000 or less, more preferably 30000 or more and 1500000 or less, and more preferably 40000 or more and 1000000. The following are more preferable.

The combination of cationic polymers having different weight average molecular weights may be either a combination of different compounds having different weight average molecular weights within the above range, or a combination of the same compounds having different weight average molecular weights within the above range.
The effect of combining compounds with different weight-average molecular weights for the component (B) is more pronounced when a homopolymer composed of the monomer represented by the general formula (1) is used. and diallyldimethylammonium chloride having a weight-average molecular weight of 20,000 or more and 2,000,000 or less, the effect of improving the antifouling property on the hydrophobic surface is easily exhibited.

Ratio of (A) component and (B) component:
In the aqueous disinfectant impregnated in the base sheet, the mass ratio of the above-described component (A) and component (B) is 0.005 or more and 5000 or less as a value of (A)/(B). be.
If (A)/(B) is less than 0.005, it may be difficult to exhibit good sterilization, virus inactivation, and antifungal properties, and the feeling of use may not be sufficient. (A)/(B) is 0.1 or more from the viewpoint of exhibiting superior sterilization properties, virus inactivation properties, antifungal properties, and usability while maintaining good antifouling properties. is preferable, and 1.0 or more is more preferable.
On the other hand, if (A)/(B) exceeds 5,000, the antifouling property may not be satisfactorily exhibited, and the feeling of use may not be sufficient. (A)/(B) is 200 or less from the viewpoint of exhibiting good antifouling properties and sufficient usability while maintaining good sterilization properties, virus inactivation properties, and antifungal properties. is preferred, 100 or less is more preferred, and 50 or less is even more preferred.

As one of the more preferred embodiments of the present invention, the aqueous disinfectant impregnated in the base sheet contains 0.08% by mass or more and 1.5% by mass or less of component (A), and component (B) is It is contained in the range of 0.01% by mass or more and 0.3% by mass or less, and the mass ratio of the component (A) and the component (B) is 1 or more and 50 or less in terms of the value of (A)/(B). A certain aspect is mentioned. With such an aspect, it is easy to provide a cleaning sheet that exhibits a good balance of sterilizing properties, virus inactivating properties, antifungal properties, and antifouling properties, and also has excellent antifungal properties.

(C) Component:
The water of component (C) in the aqueous disinfectant is not particularly limited, and examples thereof include tap water, well water, ion-exchanged water, and soft water. (C) Component can be used 1 type or in combination of 2 or more types. Among them, tap water, ion-exchanged water, or soft water is preferable from the viewpoint of providing a cleaning sheet exhibiting good sterilization, virus inactivation, and antifouling properties.
The aqueous disinfectant impregnated in the base sheet contains water as component (C) as a solvent, and contains components (A) and (B), which are components for cleaning, and other optional components. Remainder. The content of water is preferably in the range of 70% by mass or more and 99.99% by mass or less based on 100% by mass of the aqueous disinfectant.

(D) Component:
The aqueous disinfectant may further contain at least one selected from inorganic electrolytes and organic acids or salts thereof as component (D). By containing such component (D), the effects of sterilization, virus inactivation, and antifungal properties can be further improved. This is because the addition of component (D) suppresses the adsorption of component (A) to the fibers that make up the base sheet and makes it easier to transfer to the surface to be cleaned, and the base sheet is impregnated. It is presumed that this is because by improving the dispersibility of each component of the aqueous disinfectant, uneven distribution of the chemical (component) is prevented, thereby preventing mold during storage.

The component (D) in the aqueous disinfectant impregnated in the base sheet is preferably 0.01% by mass or more and 5.0% by mass or less, and preferably 0.05% by mass or more and 3.0% by mass. It is more preferably 0.1% by mass or more and 1.5% by mass or less. If the content of component (D) is less than 0.01% by mass, the effect of improving sterilization, virus inactivation, and antifungal properties may not be significantly exhibited, and the content exceeds 5.0% by mass. However, it is difficult to confirm further improvement of the effect.

Examples of inorganic electrolytes or inorganic electrolyte salts that can be used as component (D) include carbonic acid, sodium carbonate, potassium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, sodium sesquicarbonate, potassium sesquicarbonate, sodium percarbonate, and potassium percarbonate. , sodium sulfate, potassium sulfate, sodium chloride, potassium chloride, boric acid, sodium borate, potassium borate, phosphoric acid, sodium phosphate, potassium phosphate, sodium dihydrogen phosphate, potassium dihydrogen phosphate, hydrogen phosphate disodium, dipotassium hydrogen phosphate and the like.
Examples of organic acids or organic acid salts that can be used as component (D) include formic acid or its salts, acetic acid or its salts, citric acid or its salts, malic acid or its salts, lactic acid or its salts, oxalic acid or its salts, propionic acid or its salts, tartaric acid or its salts, fumaric acid or its salts, maleic acid or its salts, gluconic acid or its salts, adipic acid or its salts, itaconic acid or its salts, and the like.
(D) Component can be used 1 type or in combination of 2 or more types. Among them, acetic acid or its salts, citric acid or its salts, malic acid or its salts, lactic acid or its salts, oxalic acid or its salts, propionic acid or its salts, tartaric acid or its salts, fumaric acid or its salts, maleic acid or its salt, gluconic acid or its salt, adipic acid or its salt, itaconic acid or its salt, phosphoric acid or its salt, sodium carbonate, potassium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, sodium dihydrogen phosphate, phosphoric acid When one or more selected from potassium dihydrogen, disodium hydrogen phosphate, dipotassium hydrogen phosphate, and sodium chloride are used, the effects of improving sterilization, virus inactivation, antifungal properties, etc. are likely to be significantly exhibited, which is preferable. , a combination of acetic acid and its salts, a combination of citric acid and its salts, a combination of malic acid and its salts, a combination of gluconic acid and its salts, at least one of sodium carbonate or potassium carbonate and at least sodium or potassium hydrogen carbonate Either a combination with one, or a combination of at least one of sodium dihydrogen phosphate or potassium dihydrogen phosphate and at least one of disodium hydrogen phosphate or dipotassium hydrogen phosphate is more preferable. In particular, combinations of at least one sodium carbonate or potassium carbonate and at least one sodium hydrogen carbonate or potassium hydrogen carbonate, at least one sodium dihydrogen phosphate or potassium dihydrogen phosphate and disodium hydrogen phosphate or dihydrogen phosphate The use of any combination with at least one kind of potassium is preferable because the effect of improving the sterilization, virus inactivation, and antifungal properties is likely to be exhibited more significantly.

(E) Component:
The aqueous disinfectant may further contain at least one surfactant selected from anionic surfactants, nonionic surfactants, and amphoteric surfactants as component (E). By containing such a surfactant, the cleanability of the cleaning sheet of the present invention can be improved.

The component (E) in the aqueous disinfectant impregnated in the base sheet is preferably 0.01% by mass or more and 5.0% by mass or less, and preferably 0.03% by mass or more and 2.0% by mass. It is more preferably 0.05% by mass or more and 1.0% by mass or less. If the content of the component (E) is less than 0.01% by mass, a significant detergency effect is hardly exhibited, and if it exceeds 5.0% by mass, the feeling of use of the cleaning sheet may deteriorate.

Examples of anionic surfactants that can be used as component (E) include fatty acids, alkenyl succinic acids, polyoxyalkylene alkyl or alkenyl ether carboxylic acids, alkylol sarcosines, alkyl or alkenyl sulfate esters, polyoxyalkylene alkyl or alkenyl ethers. Sulfuric acid ester, amide ether sulfate, alkylbenzenesulfonic acid, olefinsulfonic acid, alkanesulfonic acid, alkyldiphenyl ether disulfonic acid, dialkylsulfosuccinic acid, polyoxyalkylene alkyl ether sulfosuccinic acid half ester, acyl tauric acid, alkyl monophosphate, alkyl triline Acid esters, polyoxyalkylene alkyl ether phosphates, dipolyoxyalkylene alkyl ether phosphates, tripolyoxyalkylene alkyl ether phosphates, tripolyoxyalkylene alkyl ether phosphates, alkali metal salts and ammonium salts thereof, and the like. be done.
Examples of nonionic surfactants that can be used as component (E) include polyoxyalkylene alkyl ethers, polyoxyalkylene alkylphenyl ethers, polyoxyalkylene styrenated phenyl ethers, polyalkylene glycol monoalkyl fatty acid esters, polyalkylene glycol dialkyl Fatty acid esters, polyoxyalkylene glycerin monoalkyl fatty acid esters, polyoxyalkylene sorbitan monoalkyl fatty acid esters, polyoxyethylene sorbitan trialkyl fatty acid esters, block polymers of polyoxyethylene and polyoxypropylene, polyoxyethylene and polyoxypropylene random polymer of polyoxyethylene and polyoxypropylene (reverse type), block-type ethylenediamine of polyoxyethylene and polyoxypropylene, block-type ethylenediamine of polyoxyethylene and polyoxypropylene (reverse type), Sorbitan ester, glyceride (glycerin (mono or di) fatty acid ester), polyglycerin alkyl fatty acid (mono or poly) ester, polyglycerin condensed ricinoleate, organic acid monoglyceride, propylene glycol fatty acid ester, sucrose fatty acid ester, alkyl glyceryl Ethers, alkyl polyglucosides, and the like.
Examples of amphoteric surfactants that can be used as component (E) include betaine alkylaminoacetate, alkylamidopropylbetaine, sulfobetaine, alkylamino (mono- or di)propionate, imidazolinium betaine, alkylamine oxide, Alkylaminoethylglycine, alkyldi(aminoethyl)glycine, glycine n-(3-aminopropyl) C10-16 derivative, alkylpolyaminoethylglycine, alkyl β-alanine, alkyldiethanolamine, polyoxyalkylenealkylamine, oxyethylene addition type of diamine Surfactants and the like are included.
The (E) component mentioned above may be used individually, or may be used in combination of 2 or more type.

(F) Component:
The aqueous disinfectant may further contain an antibacterial agent containing silver ions as component (F). By adding an antibacterial agent containing silver ions to the aqueous disinfectant, it is possible to exhibit more excellent disinfection properties.

The component (F) in the aqueous disinfectant impregnated in the base sheet is preferably 0.0005% by mass or more and 1.0% by mass or less, and 0.001% by mass or more and 0.5% by mass. It is more preferably 0.005% by mass or more and 0.2% by mass or less. If the content of component (D) is less than 0.0005% by mass, the effect of improving the sterilization property may not be significantly exhibited. difficult to confirm.

The component (F) is not particularly limited as long as it is an antibacterial agent that imparts , for example, a polymer that forms a complex with silver ions. Polymers that form complexes with silver ions are disclosed in JP-A-2005-298507 and JP-A-2005-299072.
Specific examples of the polymer that forms a complex with silver ions that can be used as component (F) include the SILVADUR (trademark) series provided by Dow Chemical Company and Brian BG-1 (manufactured by Matsumoto Yushi Seiyaku Co., Ltd.). trademark), CF-01 manufactured by J-Chemical Co., Ltd., SILVION series manufactured by Nippon Aeon Co., Ltd., Virgo G manufactured by Yokozawa Metal Industry Co., Ltd., and the like.

pH of aqueous sanitizer:
In the present invention, the pH of the aqueous disinfectant impregnated in the base sheet is not particularly limited, but it is preferably pH 4 or more and pH 11 or less, more preferably pH 5 or more and pH 11 or less, and pH 6 or more and pH 11 or less. It is even more preferable to have If the pH of the water-based disinfectant impregnated into the cleaning sheet is lower than 4, it is not preferable in terms of metal corrosiveness, and the detergency and antifungal properties may also be reduced. is not preferable, and the antifungal property may be lowered. In the present invention, the pH of the aqueous disinfectant is measured using the aqueous disinfectant squeezed from the cleaning sheet. For the details of the measurement method, refer to the description in the examples below.

EXAMPLES Hereinafter, the present invention will be specifically described with reference to examples and comparative examples. Tables 1 to 8 below show the components and amounts used in the cleaning sheets of Examples and Comparative Examples. The numerical values related to the blending amounts shown in Tables 1 to 8 below represent the ratio (% by mass) of the pure content of each component to the aqueous disinfectant, and the "remainder" indicating the water content is the final preparation. The blending amount adjusted so that the total amount of a certain water-based disinfectant is 100% by mass is shown. Tables 1 to 8 also show the ratio (% by mass) of each component fiber in 100% by mass of the base sheet.
In each example, 100 parts by mass of the base sheet, which is a nonwoven fabric made of various fibers shown in the table, was impregnated with 270 parts by mass of the aqueous disinfectant and stored in a sealed container at room temperature for 24 hours. and a cleaning sheet as each comparative example. Using a vise, each cleaning sheet was tightened with a force of 10 N·cm for 10 minutes, and the squeezed solution (hereinafter referred to as the squeezed solution) was used as the squeezed solution.
Using the cleaning sheet and/or the squeezing liquid, each measurement and test described below were carried out. Measurement results and test results are shown in Tables 1-8. Details of each component contained in the aqueous disinfectant are shown below.

(A) Component A-1: Alkyldimethylbenzylammonium chloride (a mixture of alkyl groups having 12 or more and 16 or less carbon atoms)
A-2: Didecyldimethylammonium chloride A-3: Dialkyldimethylammonium chloride (alkyl group is a mixture of 8 or more and 10 or less carbon atoms)
A-4: benzethonium chloride

(B) Component B-1: Homopolymer 1 of diallyldimethylammonium chloride (weight average molecular weight 75000)
B-2: Homopolymer 2 of diallyldimethylammonium chloride (weight average molecular weight 8500)
B-3: Homopolymer 3 of diallyldimethylammonium chloride (weight average molecular weight 800,000)
B-4: Cationized cellulose (trade name: Leoguard LP, manufactured by Lion Specialty Chemicals)
B-5: Cationized guar gum (trade name: Lavor gum CG-M8M, manufactured by DSP Gokyo Food & Chemicals)
B-6: Diallyldimethylammonium chloride/acrylamide copolymer 1 (trade name: PAS-J-41, manufactured by Nittobo Medical Co., Ltd.) (weight average molecular weight: 10,000)
B-7: Diallyldimethylammonium chloride/acrylamide copolymer 2 (trade name: PAS-J-81, manufactured by Nittobo Medical Co., Ltd.) (weight average molecular weight 180,000)

Comparative component of component (B) (amphoteric polymer)
B'-1: copolymer of diallyldimethylammonium chloride/acrylic acid (70/30 (molar ratio)) (weight average molecular weight 1200000)

(C) Component C-1: Ion-exchanged water

(D) Component D-1: Potassium carbonate D-2: Sodium hydrogen carbonate D-3: Dipotassium hydrogen phosphate D-4: Potassium dihydrogen phosphate D-5: Disodium hydrogen phosphate D-6: Phosphoric acid Sodium dihydrogen D-7: citric acid D-8: trisodium citrate

(E) Component E-1: 2-alkyl-N-carboxyethyl-N-hydroxyethylimidazolinium betaine E-2: lauryldimethylaminoacetic acid betaine E-3: sodium lauryldiaminoethylglycinate E-4: laurylaminodi Sodium propionate E-5: polyoxyethylene (EO 15 mol) alkyl (C12-14) ether E-6: α-olefin (C14-16) sodium sulfonate E-7: polyoxyethylene (EO 7 mol) alkyl (C9 11) Ether

(F) Component F-1: Antibacterial agent 1 containing silver ions (trade name: SILVADUR (trademark) 930 Antimicrobial, manufactured by Dow Chemical Company)
F-2: Antibacterial agent 2 containing silver ions (trade name: Virgo G, manufactured by Yokozawa Metal Industry Co., Ltd.)

(G) Other components G-1: Ethanol G-2: Diethylene glycol monobutyl ether G-3: Tetrasodium ethylenediaminetetraacetate G-4: Trisodium methylglycine diacetate G-5: Sodium salt G of 2-mercaptobenzimidazole -6: sodium salt of 2-mercaptobenzothiazole G-7: hydrochloric acid G-8: sodium hydroxide

Method for measuring the pH of the squeezed liquid:
<Calibration of pH meter>
A pH meter (manufactured by Horiba, Ltd.; pH/ion meter F-23) was connected to a pH measuring composite electrode (manufactured by Horiba, Ltd.; glass-sanded sleeve type), and the power was turned on. A saturated potassium chloride aqueous solution (3.33 mol/L) was used as the pH electrode internal solution. Next, pH 4.01 standard solution (phthalate standard solution), pH 6.86 standard solution (neutral phosphate standard solution), and pH 9.18 standard solution (borate standard solution) were each filled in a 100 mL beaker. , and immersed in a constant temperature bath at 25° C. for 30 minutes. The pH measurement electrode was immersed in a constant temperature standard solution for 3 minutes, and calibration operations were performed in order of pH 6.86, pH 9.18, and pH 4.01.
<pH measurement>
The pH was measured by immersing the electrode for pH measurement in 100 mL of the squeezed liquid adjusted to a constant temperature of 25°C in a constant temperature bath for 3 minutes.

*1: Sterilization test Test method:
(Preparation of bacterial test solution)
Each of the following five strains of bacteria to be tested was cultured in SCD bouillon medium, and adjusted so that the number of bacteria was 2.0×10 ⁸ CFU/mL or more and 9.0×10 ⁸ CFU/mL or less. It was used as a test solution. 0.1 mL of the test bacterial solution was added to a test tube containing 10 mL of the squeezed liquid and brought into contact at 25° C. for 15 minutes. Then, a sterilized neutralized solution (SCDLP medium) was added and well stirred to prepare a test solution.
(Preparation of mold test solution)
Each of the following three types of fungal test strains was cultured in a GP liquid medium, and the number of bacteria was adjusted so that the strain was 2.0×10 ⁸ CFU/mL or more and 9.0×10 ⁸ CFU/mL or less. was used as the test bacterial solution. 0.1 mL of the test bacterial solution was added to a test tube containing 10 mL of the squeezed liquid and brought into contact at 25° C. for 15 minutes. Then, a sterilized neutralized solution (GPLP liquid medium) was added and well stirred to prepare a test solution.

In this sterilization test, the following bacteria and fungi were used as test strains.
細菌の供試菌株として、Ｐｓｅｕｄｏｍｏｎａｓ ａｅｒｕｇｉｎｏｓａ ＮＢＲＣ１３７３６（１０ ⁸ ＣＦＵ／ｍＬレベル）、Ｓｔａｐｈｙｌｏｃｏｃｃｕｓ ａｕｒｅｕｓ ＮＢＲＣ１３２７６（１０ ⁸ ＣＦＵ／ｍＬレベル）、Ｅｓｃｈｅｒｉｃｈｉａ ｃｏｌｉ ＡＴＣＣ１１２２９（１０ ⁸ ＣＦＵ／ｍＬレベル）、Ａｌｃａｌｉｇｅｎｅｓ ｆａｅｃａｌｉｓ ＮＢＲＣ１４４７９（１０ ⁸ ＣＦＵ /mL level) and Serratia marcescens NBRC12648 (10 ⁸ CFU/mL level) were used.
In addition, as test strains of fungi, Aspergillus niger NBRC105649 (10 ⁸ CFU/mL level), Trichophyton mentagrophytes ATCC9533 (10 ⁸ CFU/mL level), and Candida albicans ATCC11651 (10 ⁸ CFU/mL level) were used. .

1 mL of each test solution described above was collected. Then, the test solution containing bacteria was mixed with SCD agar medium, and the test solution containing mold was mixed with PDA medium, and the number of viable bacteria was confirmed by pour culture and evaluated according to the following evaluation criteria. Using the evaluation results, final evaluation was made according to the following sterilization criteria.

Evaluation criteria:
1 point: reduction in the number of bacteria with a log reduction of 5 or more 2 points: reduction in the number of bacteria with a log reduction of 4 or more and less than 5 3 points: log reduction of the test bacteria is 3 or more and less than 4 Bacterial count reduction 4 points: Bacterial count reduction for each bacterial species was evaluated by points as a bacterial count reduction with a log reduction of less than 3 of the test bacteria.
Regarding the bacteria, the average score of the five types of bacteria was calculated, and the sterilization property was evaluated according to the following criteria.
Bacteria eradication criteria:
◎: average value of 1.0 points or more and less than 1.5 points ○: average value of 1.5 points or more and less than 2.5 points △: average value of 2.5 points or more and less than 3.5 points ×: The average value is 3.5 or more.
With regard to fungi, the average score for the three types of fungi was obtained from the above evaluation scores, and the sterilizing properties were evaluated according to the following criteria.
Mold sterilization criteria:
◎: average value of 1.0 points or more and less than 1.5 points ○: average value of 1.5 points or more and less than 2.5 points △: average value of 2.5 points or more and less than 3.5 points ×: The average value is 3.5 or more.
△, ◯, and ⊚ were judged to be practical for both the bactericidal property and the fungal sterilizing property.

*2: Virus inactivation test test method:
To a test tube containing 0.9 mL of the squeezed liquid, add 0.1 mL of the virus solution adjusted to 10 ⁸ TCID ₅₀ /mL for each of the following 7 viruses, and mix with a mixer to create a mixed solution. , 25° C. for 10 minutes. After the action, 0.1 mL of the above mixed solution was sampled and added to 9.9 mL of the action stopping solution (cell growth solution containing 2% sodium thiosulfate, 0.2% lecithin and 1.5% polysorbate 80). After double dilution, the action of the aqueous disinfectant (squeezed liquid) on the virus was stopped. This was used as a sample stock solution for measuring the virus infectivity titer for measuring the infectivity titer. Similarly, a test was performed using phosphate buffered saline (hereinafter sometimes abbreviated as PBS) instead of the squeezed liquid and used as a control.
The phosphate-buffered saline was prepared by mixing 4 kinds of salts: 8 g of sodium chloride, 0.2 g of potassium chloride, 1.44 g of disodium hydrogen phosphate, and 0.24 g of potassium dihydrogen phosphate. After dissolving in 900 mL, the pH was adjusted to 7.4 with hydrochloric acid. Then, it was sterilized by an autoclave after it was made up to 1 L.
Seven viruses were used in the above tests: feline calicivirus, murine norovirus, hepatitis B virus, hepatitis C virus, adenovirus, AIDS virus, and influenza virus.
After preparing dilutions by 10-fold serial dilution of each virus infectivity titer sample stock solution to 10 ⁸ with PBS, 50 μL each of the infectivity titer sample stock solution and each dilution step, and fetal bovine serum (FBS) ) was suspended in Dulbecco's modified Eagle's Medium (DMEM) containing 5% and seeded in a 96-well plate. After that, it was cultured for 4 days under conditions of 37° C. and 5% CO ₂ in a carbon dioxide gas incubator. After culturing, the presence or absence of CPE (cytopathic effect) due to virus proliferation was observed under an inverted microscope, and the virus infectivity titer (TCID ₅₀ /mL) was determined using the Reed-Muench method and evaluated according to the following evaluation criteria.
Evaluation criteria:
1 point: Log reduction of viral infectious titer is 5 or more 2 points: Log reduction of viral infectious titer is 4 or more but less than 5 3 points: Log reduction of viral infectious titer is 3 or more and less than 4 4 points : Evaluate the reduction in viral infectivity for each virus as a decrease in the log reduction of the viral infectivity of less than 3, and calculate the average of the evaluation scores for the 7 types of viruses. evaluated according to the standard.
Viral inactivation criteria:
◎: average value of 1.0 points or more and less than 1.5 points ○: average value of 1.5 points or more and less than 2.5 points △: average value of 2.5 points or more and less than 3.5 points ×: The average value is 3.5 or more.
In the above criteria, Δ, ◯, and ⊚ were judged to be practical.

*3: Antifouling property test of the object to be wiped (hydrophilic surface)
Test method:
The surface of a stainless steel plate (SUS304) cut to a size of 50 mm × 100 mm was wiped with each cleaning sheet shown in Tables 1 to 8 for 30 seconds, allowed to stand for 1 minute, and then rinsed with running water for 1 minute. Repeated 10 times. was used as a test piece. 2 mL of the dyed oil stain (soybean oil dyed with Sudan III) was evenly applied to the test piece with a spatula, then rinsed with running water for 60 seconds, and the state of the test piece surface after drying was evaluated according to the following evaluation criteria.
Evaluation criteria:
A: Adhesion of dirt is not found.
◯: Less than 10% of the area of the test piece, but the stain can be visually confirmed.
Δ: Dirt adheres to 10% to 50% of the area of the test piece.
x: More than 50% of the area of the test piece is covered with dirt.
In the above evaluation criteria, Δ, ◯, and ⊚ were determined as being practical.

*4: Antifouling test of the object to be wiped (hydrophobic surface)
Test method:
Wipe the surface of a resin plate (rigid PVC) cut to a size of 75 mm x 150 mm with each of the cleaning sheets shown in Tables 1 to 8 for 30 seconds, allow to stand for 1 minute, and then rinse with running water for 1 minute Repeated 10 times. This was used as a test piece. 2 mL of the dyed oil stain (soybean oil dyed with Sudan III) was evenly applied to the test piece with a spatula, then rinsed with running water for 60 seconds, and dried at room temperature. did.
Evaluation criteria:
(double-circle): Adhesion of the dirt confirmed visually is not found.
◯: The area of contamination visually confirmed was less than 10% of the area of the test piece.
Δ: The visually observed staining area was 10% or more and 50% or less of the area of the test piece.
x: The area of contamination visually confirmed exceeded 50% of the area of the test piece.
In the above evaluation criteria, Δ, ◯, and ⊚ were determined as being practical.

*5: Detergency test test method:
The mass (S) of the test piece was measured by attaching and drying a simulated stain obtained by mixing beef tallow: soybean oil: chloroform at a ratio of 1:1:5 to a stainless steel plate (15 × 50 mm) whose mass (U) was measured. This test piece was fixed on a flat surface, and 50 g of various cleaning sheets shown in Tables 1 to 8 were taken out and used as test sheets. The test sheet was folded twice and placed on the test piece, and a weight of 300 g was placed on the test piece. In this state, the cleaning sheet was moved up and down five times at intervals of one second. After that, the test piece was rinsed with ion-exchanged water and air-dried, and then the mass (T) was measured.
The cleaning rate was calculated from the following formula (1) based on the change in mass of the test piece before and after wiping, and evaluated based on the following evaluation criteria.
[Number 1]
Cleaning rate = {(ST)/(SU)} x 100 (1)
S: Mass of test piece before wiping T: Mass of test piece after wiping U: Mass of stainless plate Evaluation criteria:
◯: Washing rate of 70% or more and 100% or less △: Washing rate of 30% or more and less than 70% ×: Washing rate of less than 30% In the above evaluation criteria, Δ and ◯ were judged to be practical.

*6: Evaluation test test method for usability:
Ten non-woven fabrics (200 mm×250 mm) composed of 60% by mass of rayon fiber (regenerated fiber) and 40% by mass of polypropylene fiber were prepared. A test aqueous disinfectant was prepared with the same composition and formulation as the aqueous disinfectant in Example 1.
200 mL of the test aqueous disinfectant was impregnated into a bundle of 10 nonwoven fabrics, and it was confirmed that the test aqueous disinfectant was sufficiently spread over the nonwoven fabric bundle. After that, randomly selected panelists took out one piece of nonwoven fabric from the nonwoven fabric bundle impregnated with the test aqueous disinfectant, and spread it over a clean stainless steel plate (300 mm x 300 mm) in about 30 cm square. After wiping five times up and down five times to the right and left, the feeling of use was confirmed by a sensory test from the viewpoints of foaming, stickiness, wateriness, stiffness and dampness. There were 10 panelists, and the remaining 9 nonwoven fabrics constituting the nonwoven fabric bundle were similarly subjected to a sensory test by the remaining 9 panelists in the same manner as described above. Statistical processing was performed to analyze the evaluation results, and the item with the most evaluations was adopted as the evaluation result.
In the same manner as described above, test aqueous disinfectants were prepared with the same composition and formulation as the aqueous disinfectants in Examples 2 to 7 and Comparative Examples 1 to 7, and the feeling of use based on the following evaluation criteria. evaluated for.
Evaluation criteria:
◯: No foaming, stickiness, wateriness, or stiff feeling, moderate moistness, and good usability.
Δ: At least one of foaming, stickiness, wateriness, and stiffness is felt to some extent, or there is no moderate moistness.
x: Foaming, stickiness, wateriness, and stiff feeling are felt very strongly, or there is almost no moisture and the feeling of use is poor.
In the above evaluation criteria, Δ and ◯ were judged to be practical.

*7: Evaluation test on antifungal properties of cleaning sheets <Test method>
Test method:
300 sheets of non-woven fabric (200 mm×250 mm) made of various fibers shown in Tables 1 to 8 were prepared, and the 300 sheets were placed in a polypropylene bag having a capacity of 3 L while being stacked. Then, the bundle of nonwoven fabrics in the bag is impregnated with 2 L of each aqueous disinfectant similar to those used in Examples and Comparative Examples, the bag is closed, and after storage at room temperature for 24 hours, the bundle of nonwoven fabrics was cut in half lengthwise, and three nonwoven fabric sampling points were determined at equal intervals from the upper surface to about half the height in the height direction, and the nonwoven fabric was taken out one by one from the sampling points. Then, the taken-out piece of non-woven fabric was cut with scissors so as to fit in the petri dish. Attached to the bottom of a Petri dish previously coated with black mold fungus solution (Aspergillus niger NBRC105649 (10 ⁸ CFU/mL level)), covered, cultured at 25° C. for 4 days, and visually observed the degree of mold growth on the nonwoven fabric. and evaluated based on the following evaluation criteria.
Evaluation criteria:
(double-circle): The generation|occurrence|production of mold is completely suppressed.
◯: The generation of mold is almost suppressed.
Δ: Mold formation is observed in some areas, but is generally suppressed.
x: Mold is generated on the whole.
, and △, ◯, and ⊚ were judged to be practical.

*8: Evaluation test test method for corrosiveness of objects to be wiped:
One aluminum plate (A1100P) cut into a size of 2.5 cm × 7.5 cm was immersed in 100 ml of the squeezed liquid of the cleaning sheet of each example and each comparative example, and was heated at 25°C for 48 hours. After storage for a period of time, each aluminum plate was rinsed with deionized water and dried at room temperature for 24 hours.
Evaluation criteria:
◯: Almost no discoloration, rust, deterioration, or the like is observed.
Δ: Some discoloration, rust, deterioration, etc. are observed, but at a level of no problem.
x: Discoloration, rust, deterioration, etc. are observed on the whole.
, and △ and ◯ were judged to be practical.

（式中、Ｒ^１及びＲ^２は、それぞれ独立して水素原子又は炭素数１～３のアルキル基を表し、Ｒ^４は炭素数１～８のアルキレン基を表し、Ｒ^５、Ｒ^６及びＲ^７はそれぞれ独立して水素原子、炭素数１～３のアルキル基を表し、Ｒ^３は水素原子又は炭素数１～３のアルキル基又は－Ｒ^４－Ｃ（Ｒ^５）＝ＣＲ^６Ｒ^７を表し、Ｘ^－は陰イオン基 を表す。）
（５）前記水性除菌剤が、更に（Ｄ）成分として無機電解質、及び有機酸又はその塩より選ばれた少なくとも１種を含有する上記（１）から（４）の何れか一項に記載の清掃用シート。
（６）前記水性除菌剤が、更に（Ｅ）成分としてアニオン界面活性剤、ノニオン界面活性剤、及び両性界面活性剤より選ばれた少なくとも１種の界面活性剤を含有する上記（１）から（５）の何れか一項に記載の清掃用シート。
（７）前記水性除菌剤が、更に（Ｆ）成分として銀イオンを含む抗菌剤を含有する上記（１）から（６）の何れか一項に記載の清掃用シート。

The above embodiments include the following technical ideas.
(1) A cleaning sheet comprising a base sheet impregnated with an aqueous disinfectant, wherein the aqueous disinfectant is
(A) a quaternary ammonium salt-type surfactant as a component,
(B) a cationized polymer as a component,
(C) water as a component;
and wherein the mass ratio of component (A) to component (B) is 0.005 or more and 5000 or less as a value of (A)/(B).
(2) The cleaning sheet according to (1) above, wherein the base sheet contains regenerated fibers.
(3) Component (A) is at least one selected from alkyldimethylbenzylammonium salts, benzethonium salts, dialkyldimethylammonium salts, alkyltrimethylammonium salts, ethylbenzylammonium salts, and alkylpyridinium salts. Or the cleaning sheet according to any one of (2).
(4) Component (B) is cationized cellulose, cationized starch, cationized guar gum, a homopolymer consisting of a monomer represented by the following general formula (1), or a copolymer containing a monomer represented by the following general formula (1) The cleaning sheet according to any one of (1) to (3) above, containing one or more cationic polymers selected from the group consisting of:

(wherein R ¹ and R ² each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R ⁴ represents an alkylene group having 1 to 8 carbon atoms, R ⁵ , R ⁶ and R ⁷ each independently represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and R ³ represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or —R ⁴ —C(R ⁵ )=CR ⁶ R ^{7 and} X- represents an anionic group.)
(5) Any one of (1) to (4) above, wherein the aqueous disinfectant further contains at least one selected from inorganic electrolytes and organic acids or salts thereof as component (D). cleaning sheet.
(6) From (1) above, wherein the aqueous disinfectant further contains at least one surfactant selected from anionic surfactants, nonionic surfactants, and amphoteric surfactants as component (E) The cleaning sheet according to any one of (5).
(7) The cleaning sheet according to any one of (1) to (6) above, wherein the aqueous disinfectant further contains an antibacterial agent containing silver ions as component (F).

（式中、Ｒ ^１ 及びＲ ^２ は、それぞれ独立して水素原子又は炭素数１～３のアルキル基を表し、Ｒ ^４ は炭素数１～８のアルキレン基を表し、Ｒ ^５ 、Ｒ ^６ 及びＲ ^７ はそれぞれ独立して水素原子、炭素数１～３のアルキル基を表し、Ｒ ^３ は水素原子又は炭素数１～３のアルキル基又は－Ｒ ^４ －Ｃ（Ｒ ^５ ）＝ＣＲ ^６ Ｒ ^７ を表し、Ｘ ^－ は陰イオン基 を表す。）
That is, the present invention provides a cleaning sheet comprising a base sheet impregnated with an aqueous disinfectant, wherein the aqueous disinfectant comprises (A) a quaternary ammonium salt surfactant as component (B ) as a component contains at least one selected from a homopolymer consisting of a monomer represented by the general formula (1) and a copolymer containing a monomer represented by the following general formula (1), water as a component (C), The mass ratio of component (A) to component (B) is 0.005 or more and 5000 or less as a value of (A)/(B), and the pH is 6 or more and 11 or less .

(wherein R ¹ and R ² each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R ⁴ represents an alkylene group having 1 to 8 carbon atoms, R ⁵ , R ⁶ and R ⁷ each independently represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and R ³ represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms , or —R ⁴ —C(R ⁵ )=CR ⁶ R ^{7 and} X- represents an anionic group.)

Claims (7)

A cleaning sheet comprising a base sheet impregnated with an aqueous disinfectant, wherein the aqueous disinfectant is
(A) a quaternary ammonium salt-type surfactant as a component,
(B) a cationized polymer as a component,
(C) water as a component;
and wherein the mass ratio of component (A) to component (B) is 0.005 or more and 5000 or less as a value of (A)/(B). 2. The cleaning sheet according to claim 1, wherein the base sheet contains recycled fibers. 3. Component (A) is at least one selected from alkyldimethylbenzylammonium salts, benzethonium salts, dialkyldimethylammonium salts, alkyltrimethylammonium salts, ethylbenzylammonium salts, and alkylpyridinium salts. The sheet for cleaning described above. Component (B) is selected from the group consisting of cationized cellulose, cationized starch, cationized guar gum, a homopolymer consisting of a monomer represented by the following general formula (1), and a copolymer containing a monomer represented by the following general formula (1). 4. A cleaning sheet according to any one of claims 1 to 3, containing one or more selected cationic polymers.

(wherein R ¹ and R ² each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R ⁴ represents an alkylene group having 1 to 8 carbon atoms, R ⁵ , R ⁶ and R ⁷ each independently represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and R ³ represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or —R ⁴ —C(R ⁵ )=CR ⁶ R ^{7 and} X- represents an anionic group.) The cleaning sheet according to any one of claims 1 to 4, wherein the aqueous disinfectant further contains at least one selected from inorganic electrolytes and organic acids or salts thereof as component (D). 6. Any one of claims 1 to 5, wherein the aqueous disinfectant further contains at least one surfactant selected from anionic surfactants, nonionic surfactants, and amphoteric surfactants as component (E). The cleaning sheet according to item 1. The cleaning sheet according to any one of claims 1 to 6, wherein the aqueous disinfectant further contains an antibacterial agent containing silver ions as component (F).