JP6251787B1 - Disinfecting sheet - Google Patents

Abstract

[PROBLEMS] To eliminate not only bacteria but also a virus that exhibits strong resistance to a disinfectant, and has a sterilization / virus removal effect when the substrate sheet is impregnated and its duration. Disclosed is a sterilization sheet that does not have a risk of deterioration in performance. The disinfecting sheet of the present invention is a disinfecting sheet in which an aqueous disinfectant is impregnated into a base sheet capable of holding a liquid. A quaternary ammonium salt type surfactant, an inorganic electrolyte and / or citrate as the component (B), an alkaline agent excluding the component (B) as the component (C), and water as the component (D) The aqueous sanitizer impregnated in the material sheet has a pH of 8.1 or more and 12.0 or less, and the base sheet contains at least one selected from regenerated fibers, synthetic fibers, and natural fibers. It is characterized by that. [Selection figure] None

Description

  The present invention is excellent not only for sterilization against bacteria but also for virulence against viruses, and when it is impregnated with a disinfectant on a base sheet, the effect is not lowered, and exhibits excellent sterilization. The present invention relates to a disinfecting sheet.

  The so-called wet sheet (disinfecting sheet) form in which a nonwoven fabric is impregnated with an aqueous solution containing a disinfectant and the like is simple and easy to use and can be disposable. It is used for environmental improvement in food factories, kitchens and medical facilities.

  Patent Document 1 discloses an antibacterial composition containing ε-polylysine and / or a salt thereof, an electrolyte having pH buffering capacity, and an amino acid, and an antibacterial sheet-like article using the same.

  Patent Document 2 discloses a wiping sheet impregnated with a cleaning agent containing water, a bactericidal preservative, a water-soluble humectant, and, if necessary, a solubilizing agent.

  Patent Document 3 discloses a cleaning water impregnated with an aqueous impregnation liquid in which an aqueous impregnation liquid contains a silicone or oily fragrance that forms a peelable silicone film, and a part or all of the silicone or oily fragrance is contained as an aqueous emulsion. A dissolvable wet sheet is disclosed.

  Further, as a disinfectant impregnated in the disinfecting sheet, one containing a quaternary ammonium salt type surfactant is known, and Patent Document 4 discloses a polyaminopropyl biguanide and a quaternary ammonium salt. A water-soluble composition for impregnating a fiber sheet having a pH of 3.5 to 4.5, comprising a mixture, sodium benzoate, citric acid, disodium ethylenediaminetetraacetate, a nonionic surfactant and water is disclosed.

JP 2004-67586 A JP 2006-230612 A JP 2011-30793 A JP 2013-151447 A

  However, in the sterilization sheet described in Patent Documents 1 and 2, since the pH range is acidic to neutral and the purpose is to clean the human body, only a drug with a relatively low sterilization effect can be blended. Therefore, the effect with respect to the virus with high drug resistance is low, and when it is used for environmental cleaning and sterilization, the required cleaning and sterilization effect cannot be obtained. If the sterilization and washing are insufficient, the remaining bacteria / viruses infect the human body and become serious or cause mass infection, or it is mixed with food and causes food rot and food poisoning. Further, the cleaning wet sheet described in Patent Document 3 has an optimum pH of 3 to 5 for the impregnating liquid for maintaining water degradability, and in the cleaning sheet containing such an impregnating liquid in the pH region, The cleaning and disinfection effect required as a wet sheet for environmental disinfection cannot be exhibited.

  On the other hand, a disinfectant containing a quaternary ammonium salt as described in Patent Document 4 has an excellent disinfecting effect, but when impregnated in a base sheet such as a nonwoven fabric, The amount of effective disinfectant components that are strongly adsorbed decreases, and if the impregnation amount of the disinfectant is not increased, the disinfection effect and the sustainability of the disinfection effect may be decreased. If the base sheet is made of recycled fibers, particularly fibers containing rayon, the base sheet becomes hydrophilic, so that the amount of water-containing disinfectant can be increased. Since the adsorbability of the active ingredient of the disinfectant is higher than other fibers, it is difficult to sufficiently improve the disinfecting effect and its sustainability even if the amount of the disinfectant impregnated on the base sheet increases. Met.

  Therefore, the problem to be solved by the present invention is not only sterilizing against bacteria, but also having virulence against viruses exhibiting strong resistance against sterilizing agents, and when the substrate sheet is impregnated An object of the present invention is to provide a sterilization sheet that does not have a risk of reducing the sterilization / virus removal effect and its sustainability.

  In order to solve the above-mentioned problems, the present inventors have intensively studied, and as a result, impregnated a base sheet with an aqueous disinfectant containing a quaternary ammonium salt, an inorganic electrolyte and / or a citrate, and an alkali agent. The present invention has found that a sterilization sheet having an aqueous sterilization agent impregnated in a base sheet having a pH of 8.1 or more and 12.0 or less can solve the problems of conventional sterilization sheets. It came to be completed.

That is, the present invention
(1) In a sterilization sheet impregnated with an aqueous sterilizing agent on a substrate sheet capable of holding a liquid, the aqueous sterilizing agent is a quaternary ammonium salt type surfactant as component (A), (B) An inorganic electrolyte as the component , (C) an alkaline agent excluding the component (B), water as the component (D), the component (B) being sodium carbonate or potassium carbonate, hydrogen carbonate A combination of sodium or potassium hydrogen carbonate, or a combination of sodium dihydrogen phosphate or potassium dihydrogen phosphate and disodium hydrogen phosphate or dipotassium hydrogen phosphate, and the aqueous solution impregnated in the base sheet. The pH of the fungicide is 9.8 or more and 12.0 or less,
The base sheet is either made of recycled fibers, or regenerated fiber, synthetic fiber, sterilization sheet characterized by comprising a mixed fiber comprising a mixture of at least one of natural fibers,
(2) an aqueous disinfecting agents impregnated in the substrate sheet, the base sheet per 100 parts by weight of 150 parts by mass or more, sterilization sheet of the above (1) or less 350 weight parts,
(3) The removal of (1) or (2) above , wherein the component (A) in the aqueous disinfectant impregnated in the base sheet is 0.00045% by mass or more and 20% by mass or less. Fungus sheet,
(4) Any of (1) to ( 3) , wherein the component (A) is at least one selected from benzalkonium chloride, benzethonium chloride, dialkyldimethylammonium chloride, and ethylbenzylammonium chloride Sterilization sheet,
(5) The above (1), wherein the component (C) is at least one selected from sodium hydroxide, potassium hydroxide, sodium silicate, potassium silicate, monoethanolamine, diethanolamine, and triethanolamine. To (4) any sterilization sheet,
(6) The sterilization sheet according to any one of (1) to (5) , wherein the aqueous sterilizer contains a chelating agent as the component (E) ,
Is a summary.

  The disinfecting sheet of the present invention has excellent disinfecting properties against bacteria, fungi, and the like, and is particularly excellent in disinfecting against highly resistant viruses. When the disinfectant is impregnated into the base sheet There is little decrease in the sterilization effect, and it is excellent in the maintenance of the sterilization effect. Further, the sterilization sheet of the present invention is excellent because the amount of impregnation into the base sheet can be increased without causing a decrease in the sterilization effect even when the base sheet is made of fibers containing rayon. It has effects such as sterilization / virus removal and maintenance of sterilization.

  In the aqueous disinfectant impregnated in the disinfecting sheet of the present invention, the quaternary ammonium salt of component (A) includes didecyldimethylammonium chloride, didecyldimethylammonium adipate, didecyldimethylammonium gluconate, Didecyldimethylammonium salts such as decyldimethylammonium propionate, didecyldimethylammonium methosulfate, dioctyldimethylammonium salts such as dioctyldimethylammonium chloride, octyldecyldimethylammonium salts such as octyldecyldimethylammonium chloride, alkyldimethylbenzylammonium chloride , Hexadecyltrimethylammonium chloride, didecylmonomethylhydroxyethylammonium chloride, didecyl Nomethylhydroxyethylammonium adipate, didecylmonomethylhydroxyethylammonium gluconate, didecylmonomethylhydroxyethylammonium sulfonate, 1,4-bis (3,3 ′-(1-decylpyridinium) methyloxy) butanedibromide, N, N′-hexamethylenebis (4-carbamoyl-1-decylpyridinium bromide), alkyldimethylhydroxyethylammonium chloride, alkyltrimethylammonium chloride, alkyldimethylethylammonium ethyl sulfate, cetylpyridinium chloride, alkyldimethylethylbenzylammonium chloride, decyliso Nonyldimethylammonium chloride, didecylmethyl polyoxyethylene Um propionate, and benzethonium chloride. (A) A component can be used 1 type or in combination of 2 or more types. Among them, alkyldimethylbenzylammonium chloride, didecyldimethylammonium adipate, decyltrimethylammonium chloride, didecyldimethylammonium chloride, dioctyldimethylammonium chloride, octyldecyldidecylammonium chloride, alkyl from the viewpoint of sterilization and virus elimination Dimethylethylbenzylammonium chloride and benzethonium chloride are preferred, and in particular, alkyl dimethylbenzylammonium chloride having 12 to 16 carbon atoms, didecyldimethylammonium chloride, dioctyldimethylammonium chloride, octyldecyldidecylammonium salt, alkyldimethylethylbenzylammonium chloride, benzethonium Chloride is preferred

  The inorganic electrolyte of component (B) in the aqueous disinfectant includes sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, sodium sesquicarbonate, potassium sesquicarbonate, sodium percarbonate, potassium percarbonate, sodium sulfate, potassium sulfate. , Sodium chloride, potassium chloride, sodium dihydrogen phosphate, potassium dihydrogen phosphate, disodium hydrogen phosphate, dipotassium hydrogen phosphate, sodium phosphate, potassium phosphate, trisodium citrate, tripotassium citrate, boron Examples thereof include sodium acid and potassium borate. Examples of the citrate include potassium citrate and sodium citrate. (B) A component can be used 1 type or in combination of 2 or more types. Among them, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, sodium sulfate, potassium sulfate, sodium chloride, potassium chloride, sodium dihydrogen phosphate, potassium dihydrogen phosphate, phosphoric acid from the point of anti-adsorption properties Disodium hydrogen, dipotassium hydrogen phosphate, sodium phosphate, and potassium phosphate are preferred, especially sodium carbonate or potassium carbonate and sodium bicarbonate or potassium bicarbonate in combination, sodium dihydrogen phosphate or potassium dihydrogen phosphate And a combination of disodium hydrogen phosphate or dipotassium hydrogen phosphate is preferred.

  As the component (C), an alkali agent excluding the alkali contained in the component (B) is used. Examples of the alkali agent include alkali metal hydroxides such as sodium hydroxide and potassium hydroxide, and sodium orthosilicate. , Potassium orthosilicate, sodium metasilicate, potassium metasilicate, No. 1 sodium silicate, No. 2 sodium silicate, No. 3 sodium silicate, A potassium silicate, B potassium silicate, C potassium silicate and other alkali metal silicates, monoethanolamine, Examples thereof include alkanolamines such as diethanolamine and triethanolamine. (C) A component can be used 1 type or in combination of 2 or more types. Of these, sodium silicate, potassium silicate, monoethanolamine, diethanolamine, and triethanolamine are preferable from the viewpoint of detergency, and sodium silicate, potassium silicate, and monoethanolamine are particularly preferable.

  The water of the component (D) in the aqueous disinfectant is not particularly limited, and examples thereof include tap water, well water, ion exchange water, and soft water. (D) A component can be used 1 type or in combination of 2 or more types. Of these, ion-exchanged water or soft water is preferred from the viewpoints of sterilization, virus removal and usability.

  In the sterilizing sheet of the present invention, the aqueous sterilizing agent is impregnated in a base material sheet capable of holding a liquid, but the aqueous sterilizing agent impregnated in the base material sheet has a pH of 8.1. Above, it is 12.0 or less, Preferably pH is 8.1 or more and 11.0 or less. If the pH of the aqueous disinfectant impregnated in the base sheet is less than 8.1, the effect on bacteria and viruses is reduced, and the detergency against dirt is lowered. Corrosion against or impregnation of the impregnated nonwoven fabric occurs. The aqueous disinfectant impregnated in the disinfecting sheet of the present invention includes (A) a quaternary ammonium salt type surfactant as a component, (B) an inorganic electrolyte and / or citrate as a component, and (C The amount of the quaternary ammonium salt type surfactant which is an active ingredient by being adsorbed on the fiber of the base sheet when impregnated into the base sheet by including an alkali agent other than the component (B) as a component) There is little possibility that pH will fall or pH will fall, and even when a base sheet contains rayon, there is little possibility that an active ingredient amount and pH will fall.

  In the aqueous disinfectant impregnated in the base sheet, the component (A) is preferably 0.00045% by mass or more and 20% by mass or less, and 0.05% by mass or more and 5% by mass or less. Is more preferable, and it is further more preferable that it is 0.1 mass% or more and 4 mass% or less. The aqueous disinfectant for impregnating the base sheet is preferably such that the mass ratio (A) / (B) of the component (A) and the component (B) is 0.01 or more and 20 or less, More preferably, it is 0.1 or more and 5 or less. The pH of the aqueous sanitizer impregnated in the base sheet, the concentration of the component (B), and the mass ratio (A) / (B) of the component (A) to the component (B) are based on the aqueous sanitizer. It is a value measured by sampling the aqueous disinfectant impregnated in the base material sheet after 24 hours or more after impregnating the sheet.

  Examples of the base sheet in the sterilization sheet of the present invention include regenerated fibers, synthetic fibers, natural fibers, and nonwoven fabrics, woven fabrics, and net cloths made of mixed fibers thereof. Examples of the regenerated fiber include rayon, polynosic, cupra, lyocell, and acetate. Rayon is preferable from the viewpoint of drug resistance of the nonwoven fabric and uneven distribution of the drug. When the regenerated fiber is used for the base sheet, the base sheet becomes hydrophilic and the amount of impregnation with the aqueous disinfectant can be improved. The proportion of recycled fibers in the base sheet is preferably 10% or more, and more preferably 50% or more. The amount of the aqueous sanitizer to be impregnated into the sheet base material is usually 20 to 120 parts by mass per 100 parts by mass of the fibers constituting the sheet base material, but when the base sheet contains regenerated fibers, the base material The amount of the aqueous disinfectant impregnated into the sheet can be increased. The disinfecting sheet of the present invention is preferably impregnated with 150 to 350 parts by mass of an aqueous disinfectant per 100 parts by mass of the base sheet, and is impregnated with 200 to 330 parts by mass. More preferably.

  The aqueous disinfectant used for the disinfecting sheet of the present invention preferably further contains a chelating agent as the component (E). Chelating agents include ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid (NTA), methylglycine diacetic acid (MGDA), hydroxyethylenediaminetriacetic acid (HEDTA), diethylenetriaminopentaacetic acid (DTPA), triethylenetetraamine hexaacetic acid ( TTHA), hydroxyethyliminodiacetic acid (HIDA), dihydroxyethylglycine (DHEG), methylglycine diacetate (MGDA), glutamate diacetate (GLDA), aspartate diacetate (ASDA), β-alanine diacetate (ADA) And amino acids such as serine diacetic acid (SDA), glycine, alanine, glutamic acid and aspartic acid, glycolic acid, lactic acid, gluconic acid, tartaric acid, malic acid, and alkali metal salts and ammonium salts thereof. These may be used alone or in combination of two or more. The chelating agent is preferably added in an amount of 0.01% by mass or more and 10% by mass or less, and more preferably 0.03% by mass or more and 5% by mass or less, in the aqueous sanitizing agent in terms of improving detergency. .

  The aqueous disinfectant used for the disinfecting sheet of the present invention may further contain components usually used in the technical field. Examples of such components include organic solvents, surfactants other than the component (A), fragrances, and dyes. The proportion of these aqueous disinfectants is preferably 0.001 to 10% by mass, more preferably 0.1 to 5% by mass.

As said organic solvent, methanol, ethanol, 1-propanol, 2-propanol, acetone, hexane, acetonitrile, toluene etc. are mentioned, for example. These may be used alone or in combination of two or more. The organic solvent is preferably added in an aqueous disinfectant in an amount of 0.001% by mass or more and 5% by mass or less, and 0.01% by mass or more and 3% by mass or less in terms of improving liquid stability in a solution state. More preferably.
The surfactant other than the component (A) is preferably added in an amount of 0.001% by mass or more and 5% by mass or less in the aqueous disinfectant from the viewpoint of improving the detergency. It is more preferable to blend below.

As the fragrance, conventionally known fragrances can be used without particular limitation. For example, natural fragrances extracted from natural products such as peppermint oil, synthetic fragrances synthesized such as limonene, and two or more known fragrances are appropriately used. A fragrance obtained by mixing at a ratio of
As the fragrance component, those conventionally contained in various fragrances and natural products having fragrance can be used without particular limitation. Examples of the natural fragrance include anise oil, basil oil, bergamot oil, cedar. Oil, clove oil, coriander oil, eucalyptus oil, fennel oil, galvanum oil, geranium oil, jasmine absolute, lavandin oil, lavender oil, lemongrass oil, lemon oil, lavender spike oil, neroli oil, oak moss absolute, patchouli oil, pe Tigren oil, pine oil, rose oil, rosemary oil, clary sage oil, sandalwood oil, thyme oil, tonka absolute, tuberose absolute, vetiver oil, ylang ylang oil, peppermint oil, camphor oil, mellow oil, perilla oil, spearmint Oil, star anise oil, la Mu oil, okotia oil, turpentine oil, nutmeg oil, citronella oil, bored rose oil, cananga oil, cardamom oil, cassia oil, orange oil, mandarin oil, tangerine oil, bay oil, Jerome oil, hiba oil, coconut oil, grapefruit oil , Yuzu oil and the like.

  Synthetic fragrances include hydrocarbons (α-pinene, limonene, camphene, p-cymene, fenchen, osimene, guaien, etc.), alcohols (linalol, geraniol, citronellol, nerol, menthol, borneol, benzyl alcohol, anis alcohol) , Nerolidol, eugenol, α-phenylethyl alcohol, β-phenylethyl alcohol, rosinol, ambrinol, myrcenol, tetrahydrolinalol, terpineol, cedrol, 1-octanol, 3-octanol, 9-decenol, 10-undecenol, dihydrocarbene All, prenol, ethyl linalool, 3-heptanol, benzyl eugenol, 2-ethylhexanol, 3-hexenol, 2,4-dimethyl-3-cyclohex Sen-1-methanol, 4-isopropylcyclohexanol, P-isopropylcyclohexenemethanol, 1-nonanol, 2-nonanol, P-isopropylcyclohexanol, 2-methyl-3-buten-2-ol, 2-hexenol, 1- Nonen-3-ol, 3-methyl-1-pentanol, 2,6-dimethyl-heptanol and 3,4,5,6,6-pentamethyl-2-heptanol, etc.), aldehydes (n-butyraldehyde, isobutyraldehyde) , Hexyl aldehyde, heptyl aldehyde, n-nonyl aldehyde, nonadienal, citral, citronellal, benzaldehyde, cinnamic aldehyde, heliotropin, vanillin, tripral, 2-dodecenal, 2,5,6-trimethyl-4-heptana , Trimethylundecenal, 2-decenal, p-tolylaldehyde, acetaldehyde diethyl acetal, n-octanal, n-decanal, p-isopropylphenylacetaldehyde, octanal dimethyl acetal, n-nonanal, undecanal, 10-undecenal, Phenylpropionaldehyde, 3-hexenal, 2-undecenal and p-methylhydratropaldehyde), ketones (methyl amyl ketone, methyl nonyl ketone, diacetyl, acetyl propionyl, acetyl butyryl, carvone, menthone, camphor, acetophenone, p-methylacetophenone, ionone, dihydrocarbon and 2-undecanone, etc.), lactones or oxides (amylbutyrolactone, methylphenylglycid) Ethyl, γ-nonyllactone, coumarin, cineol, jasmine lactone, methyl r-decalactone, 2,2,6-trimethyl-6-vinyltetrahydropyran and 5-isoproperol-2-methyl-2-vinyltetrahydrofuran), ethers (1,8-cineole, rose oxide, cedrol methyl ether (cedlum bar), p-cresyl methyl ether, isoamylphenyl ethyl ether, 4-phenyl-2,4,6-trimethyl-1,3-dioxane, anethole, etc. Can be mentioned. Esters (methyl formate, isopropyl formate, linalyl formate, ethyl acetate, octyl acetate, menthyl acetate, benzyl acetate, cinnamyl acetate, butyl propionate, isoamyl acetate, isopropyl isobutyrate, granyl isovalerate, caproic acid Allyl, butyl heptylate, octyl caprylate, methyl heptine carboxylate, ethyl perahagonate, methyl octynecarboxylate, isoacyl caprate, methyl laurate, ethyl myristate, ethyl benzoate, benzyl benzoate, methyl phenylacetate, phenyl Butyl acetate, methyl cinnamate, cinnamyl cinnamate, methyl salicylate, ethyl anisate, methyl anthranilate, ethyl pyruvate, ethyl α-butyl butyrate, decyl acetate Bigisan propyl etc.) and the like.

Examples of the dye include natural dyes, synthetic dyes, and mixtures of two or more thereof. Specific examples of natural pigments include, for example, red cabbage pigment (purple red), red radish pigment (red orange to red purple), purple potato pigment (purple red), beet red (red), alkane pigment ( Red to reddish purple), cochineal dye (yellow orange to purple), lac dye (red orange to purple), safflower red dye (red), red mushroom (yellow orange to reddish purple), gardenia red dye (red), red beetle dye (Red), red pepper pigment (yellow to red-orange), annatto pigment (yellow to red-orange), gardenia yellow (yellow), safflower yellow (yellow), turmeric (yellow), marigold pigment (yellow), caramel Dye (dark brown to black), Kouliang dye (red brown to dark brown), onion dye (brown), sheanut dye (brown), pecannut dye (brown), chicory dye (red brown to brown), cacao dye (red) ~ Brown), chlorophyll (green), gardenia blue pigment (blue), and the like spirulina pigment (blue).
Specific examples of the synthetic pigment include, for example, Red No. 1, Red No. 2, Red No. 3, Red No. 4, Red No. 5, Red No. 101, Red No. 102, Red No. 103, Red No. 104, Red No. 105, Red No. 106, Orange No. 1, Orange No. 2, Yellow No. 1, Yellow No. 2, Yellow No. 3, Yellow No. 4, Yellow No. 5, Green No. 1, Green No. 2, Green No. 3, Green No. 1 , Blue No. 2, Purple No. 1, edible mixed dyes, and the like.

  The disinfecting sheet of the present invention has a strong disinfecting property and is excellent in disinfecting / disinfecting bacteria and viruses. It is useful for sterilization and virus removal in food, brewing, agriculture, etc. In particular, it can be suitably used for sterilization of hard surfaces in the medical field.

  The disinfecting sheet of the present invention can be applied in various applications, and is suitable for surface disinfection excluding the human skin surface, device disinfection, or disinfection / disinfection around a toilet or bed. The disinfecting sheet of the present invention can be formed in a form in which a plurality of sheets are laminated, a long sheet wound in a roll shape, a folded form, or the like.

EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention concretely, this invention is not limited by these. Each component used for blending in Examples and Comparative Examples is shown below. Note that EO is an abbreviation for ethylene oxide and PO is an abbreviation for propylene oxide, and the subsequent numbers represent the average added moles of EO and PO, respectively. In addition, the numerical value of the mixing | blending of each component in the Example in a table | surface and a comparative example represents the mass% of a pure part. Moreover, the description of the alkyl group in each component represents, for example, a mixture having an alkyl group having 12 to 16 carbon atoms in the case of alkyl (C12 to 16).
(A) Component A-1: Octyldecyldimethylammonium chloride A-2: Dioctyldimethylammonium chloride A-3: Didecyldimethylammonium chloride A-4: Alkyl (C12-16) dimethylbenzylammonium chloride (A ′) component [ (A) Component comparison component]
A′-1: N-alkyl (C14-18) trimethylenediamine oleate A′-2: alkyl (C8-18) amine acetate

(B) Component B-1: Sodium carbonate B-2: Sodium hydrogencarbonate B-3: Sodium sesquicarbonate B-4: Sodium sulfate B-5: Sodium chloride B-6: Sodium citrate B-7: Hydrogen phosphate Disodium B-8: Sodium dihydrogen phosphate B-9: Potassium carbonate B-10: Potassium hydrogen carbonate (B ′) component [Comparative component of component (B)]
B′-1: Sodium polyacrylate (weight average molecular weight: 4,500)
B'-2: Glycerin

(C) Component C-1: monoethanolamine C-2: sodium metasilicate pentahydrate C-3: sodium hydroxide C-4: potassium hydroxide

(D) Component D-1: Water

(E) Component E-1: Ethylenediaminetetraacetic acid tetrasodium salt (EDTA-4Na)
E-2: Methylglycine diacetic acid trisodium salt (MGDA-3Na)

Other components (F) Component F-1: Nonionic surfactant 1 [polyoxyethylene (EO: 6.5 mol) alkyl (C9-11) ether]
F-2: Nonionic surfactant 2 [polyoxyethylene (EO: 25 mol) alkyl (tallow fat) ether]
F-3: Octyldimethylamine oxide

(G) Component G-1: Isopropyl alcohol

Examples 1 to 91, Comparative Examples 1 to 17
An aqueous disinfectant was prepared based on the formulations shown in Tables 1 to 10. The nonwoven fabric base material sheet containing the regenerated fibers shown in the table was impregnated with each aqueous disinfectant for 24 hours so as to have the impregnation amount shown in the table per 100 parts by weight of the base material sheet to obtain a disinfecting sheet. Using a vise, the sterilization sheet is tightened with a force of 10 N · cm for 10 minutes, the pH of the squeezed solution (hereinafter referred to as squeezed solution), the amount of effective (A) component, and the sterilization sheet is washed. , Disinfectant, virus disinfectant, anti-adsorption property, drug resistance to non-woven fabric of aqueous disinfectant, feeling of use of disinfecting sheet, wear of material to be cleaned, uneven distribution of disinfectant in disinfecting sheet, etc. The properties of were evaluated. The results are shown in Tables 1 to 10.

pH measurement method <calibration of pH meter>
Connect a pH measurement composite electrode (made by HORIBA; glass sliding sleeve type) to a pH meter (made by HORIBA; pH / ion meter F-23) and turn on the power. 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) are 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 standard solution adjusted to a constant temperature for 3 minutes, and calibration operations were performed in the order of pH 6.86, pH 9.18, and pH 4.01.
<PH measurement>
The pH measurement electrode was immersed for 3 minutes in 100 mL of a squeezed solution adjusted to a constant temperature of 25 ° C. in a thermostatic chamber, and the pH was measured.

Effective (A) component amount (cationic surfactant amount) measuring method Take 8 mL of the extract in a beaker, 1 mL of 0.25 M pH 5.7 sodium acetate buffer, 6 × 10 ⁻⁴ M chromium in the extract. Azurol S solution (1 mL) was sequentially added, and the mixture was titrated with an aqueous 2.0 mol / L sodium lauryl sulfate solution while stirring with a magnetic stirrer to determine the amount of component (A) in the extract. The end point of the titration was visually determined that the color of the solution changed from purple to orange.

* 1: Detergency test method:
The mass was measured using a cleanness evaluation indicator [manufactured by Pereg, trade name: TOSI] having pseudo blood (bovine blood purified product: albumin, hemoglobin, fibrinogen, thrombin) attached to a stainless steel plate (15 × 50 mm) as a test piece. . This test piece was immersed in 200 mL of the extraction liquid, allowed to stand for 5 minutes, rinsed with ion-exchanged water, naturally dried, and then measured for mass. The washing rate was calculated from the change in mass of the test piece before and after washing, and was shown on the following scale.
Evaluation criteria:
◎: Cleaning rate 80% or more, 100% or less ○: Cleaning rate 60% or more, less than 80% △: Cleaning rate 40% or more, less than 60% ×: Cleaning rate less than 40%, △, ○, ◎ are practical Judged as having

* 2: Bactericidal test method:
The test strain was cultured in an SCD bouillon medium, and the number of bacteria was adjusted to 2.0 × 10 ⁸ CFU / mL or more and 9.0 × 10 ⁸ CFU / mL or less to prepare a bacterial solution. 0.1 mL of each test bacterial solution was added to 10 mL of the extract and contacted at 25 ° C. for 15 minutes, and then a sterile neutralization solution (SCDLP medium) was added and stirred well. As a general ^{bacteria, Pseudomonas aeruginosa NBRC13736 (10 8 CFU} / mL ^{level), Staphylococcus aureus NBRC13276 (10 8} CFU / mL ^{level), Escherichia coli ATCC11229 (10 8} CFU / mL ^{level), Alcaligenes faecalis NBRC14479 (10 8} CFU / mL level ), Serratia marcescens NBRC12648 (10 ⁸ CFU / mL level) was used.
1 mL of this was mixed-cultured on an SCD agar medium, the number of viable bacteria was confirmed, and evaluated according to the following criteria.
Evaluation criteria:
1 point: Decrease in the number of bacteria with a log reduction of 5 or more in the test bacteria 2 points: Decrease in the number of bacteria in the test bacteria with a reduction of 4 or more but less than 5 Decrease in the number of bacteria: 4 points: As the number of bacteria whose log reduction of the test bacteria is less than 3, evaluate the decrease in the number of bacteria for each of the above-mentioned bacterial species, determine the average value of the number of bacterial counts, and Bactericidal properties were evaluated.
A: The average value is 1.0 point or more and less than 1.5 point.
A: The average value is 1.5 points or more and less than 2.5 points.
Δ: The average value is 2.5 points or more and less than 3.5 points.
X: The average value is 3.5 or more.
And Δ, ○, and ◎ were determined to be practical.

* 3: Test method for virus removal test:
To the test tube, 0.9 mL of the squeezed solution and 0.1 mL of virus solution adjusted to 10 ⁸ TCID ₅₀ / mL were added, mixed with a mixer, and allowed to act at 25 ° C. for 10 minutes. After the action, 0.1 mL was sampled and added to 9.9 mL of action stop solution (a cell growth solution containing 2% sodium thiosulfate, 0.2% lecithin and 1.5% polysorbate 80) and diluted 100 times, The action of the aqueous disinfectant (extracted liquid) on the virus was stopped. This was used for measurement of infectious titer as a stock solution for measuring virus infectious titer. Similarly, a test using phosphate buffered saline (hereinafter sometimes abbreviated as PBS) in place of the squeezed solution was performed as a control. Phosphate buffered saline is composed of 8g sodium chloride, 0.2g potassium chloride, 1.44g disodium hydrogen phosphate, 0.24g potassium dihydrogen phosphate, mixed with 4 kinds of salt and made up to 900mL with ultrapure water. After dissolution, the pH is adjusted to 7.4 with hydrochloric acid. Sterilize by autoclaving after measuring up to 1L. As the virus, feline calicivirus, mouse norovirus, hepatitis B virus, hepatitis C virus, adenovirus, AIDS virus, influenza virus were used.
Dilbeco's modified Eagle's Medium (DMEM) supplemented with 5% of the stock solution for infectivity titration and 50 μL of diluted virus solution and fetal bovine serum (FBS) after 10-fold serial dilution of the stock solution for virus infectivity titer measurement with PBS The cells suspended in (1) were seeded in a 96-well plate. Thereafter, the cells were cultured in a carbon dioxide incubator for 4 days at 37 ° C. and 5% CO 2. After culturing, the presence or absence of CPE (cytopathic effect) due to virus growth was observed under an inverted microscope, the virus infectivity titer (TCID ₅₀ / mL) was determined using the Reed-Muench method, and evaluated according to the following criteria.
Evaluation criteria:
1 point: Log reduction of virus infection titre is 5 or more 2 points: Log reduction of virus infection titre is 4 or more, less than 5 3 points: Log reduction of virus infection titre is 3 or more, less than 4 4 points : As the reduction of the virus infection titer was less than 3, the reduction of the virus infectivity titer was evaluated by the score for each of the viruses, the average value was determined, and the virus removal property was evaluated according to the following criteria.
A: The average value is 1.0 point or more and less than 1.5 point.
A: The average value is 1.5 points or more and less than 2.5 points.
Δ: The average value is 2.5 points or more and less than 3.5 points.
X: The average value is 3.5 or more.
And Δ, ○, and ◎ were determined to be practical.

* 4: Adsorption prevention test The amount of active ingredients in the extract was measured and compared with the measured value of the solution before impregnation, and the degree of adsorption of the components in the solution to the nonwoven fabric was evaluated. The active ingredient amount (cationic surfactant amount) measurement method was performed by measuring the active ingredients before and after the impregnation and evaluating them according to the following criteria.
Evaluation criteria:
A: Effective component amount is 80% or more and 100% or less before impregnation O: Effective component amount is 60% or more and less than 80% before impregnation Δ: Active component amount is 40% or more and less than 60% before impregnation ×: The amount of active ingredient was determined to be less than 40% before impregnation, and Δ, ○, and ◎ were determined to be practical.

* 5: Evaluation test method for drug resistance of nonwoven fabric:
Ten nonwoven fabrics (200 mm × 250 mm) made of various materials shown in Table 1 to Table 10 were used, impregnated in 200 mL of each test aqueous disinfectant and stored at 40 ° C. for 1 week, and then the appearance change of the nonwoven fabric was visually observed. Observed.
Evaluation criteria:
A: No discoloration or deterioration has occurred.
○: Light discoloration or slight deterioration occurs.
(Triangle | delta): The deep discoloration and strong degradation have generate | occur | produced partially.
X: Dark discoloration or strong deterioration occurs as a whole.
And Δ, ○, and ◎ were determined to be practical.

* 6: Evaluation test method for feeling of use:
Ten nonwoven fabrics (200 mm × 250 mm) made of various materials shown in Table 1 to Table 10 were used, impregnated in 200 mL of each test aqueous disinfectant, and after confirming that the chemical solution was sufficiently spread, the chemical solution was infiltrated. Take out one piece of non-woven fabric, wipe the surface of a clean stainless steel approximately 30 cm square, wipe it up and down 5 times, left and right 5 times, and use it by a sensory test from the viewpoint of foaming, sticky wateriness, stiff feeling, dampness, etc. It was confirmed. Panelists were randomly selected and n = 10 for each sample. Statistical analysis was performed to analyze the evaluation results, and the items with the highest evaluation were adopted as the evaluation results.
Evaluation criteria:
○: There is no foaming, stickiness, wateriness, and a feeling of firmness.
Δ: Slight bubbling, stickiness, wateriness, stiff feeling, or no moderate dampness.
X: Foaming, stickiness, wateriness, and a feeling of firmness are very strong, or there is almost no dampness and a feeling of use is bad.
And Δ and ○ were determined to be practical.

* 7: Evaluation test method for wear of materials to be cleaned:
Ten nonwoven fabrics (200 mm × 250 mm) made of various materials shown in Table 1 to Table 10 were used, impregnated in 200 mL of each test aqueous disinfectant, and after confirming that the chemical solution was sufficiently spread, the chemical solution was infiltrated. One piece of nonwoven fabric was taken out, and a clean stainless steel surface was wiped 5 times up and down and 5 times on the left and right sides over about 30 cm. Thereafter, the scratches generated on the stainless steel surface were visually observed.
Evaluation criteria:
(Double-circle): A crack is not seen.
○: Slightly shallow scratches are observed.
Δ: Deep scratches are partially observed.
X: Deep scratches are seen as a whole.
And Δ, ○, and ◎ were determined to be practical.

* 8: Evaluation test method for uneven distribution of drugs:
Nonwoven fabrics (200 mm × 250 mm × 300 sheets) made of various materials shown in Table 8 to Table 10 are placed in a 3 L polypropylene bag, impregnated with 2 L of each test aqueous disinfectant, and 24 hours at 25 ° C. After storage, the film was cut into half lengths, and it was visually observed whether the chemical solution had penetrated to the center.
Evaluation criteria:
A: The chemical solution is soaked evenly throughout.
○: The drug solution is almost completely infiltrated.
(Triangle | delta): There is a part which is not soaked in part.
X: There are parts that are not soaked everywhere.
And Δ, ○, and ◎ were determined to be practical.

Claims (6)

In a sterilization sheet impregnated with an aqueous sterilizing agent on a base sheet capable of holding a liquid, the aqueous sterilizing agent is a quaternary ammonium salt type surfactant as component (A), (B) Inorganic electrolyte as component , (C) Alkaline agent excluding component (B), (D) Water is contained as component, and (B) component is sodium carbonate or potassium carbonate and sodium bicarbonate or carbonate Combination of potassium hydrogen, or a combination of sodium dihydrogen phosphate or potassium dihydrogen phosphate and disodium hydrogen phosphate or dipotassium hydrogen phosphate, and an aqueous disinfectant impregnated in the base sheet pH is 9.8 or more and 12.0 or less,
The sterilization sheet, wherein the base sheet is made of regenerated fibers or made of mixed fibers obtained by mixing at least one of synthetic fibers and natural fibers with regenerated fibers. Aqueous disinfectant impregnated in the substrate sheet, the base sheet per 100 parts by weight of 150 parts by mass or more, sterilization sheet of claim 1, wherein at most 350 parts by mass. The sterilizing sheet according to claim 1 or 2 , wherein the component (A) in the aqueous sterilizing agent impregnated in the base sheet is 0.00045% by mass or more and 20% by mass or less. The component (A) is at least one selected from benzalkonium chloride, benzethonium chloride, dialkyldimethylammonium chloride, and ethylbenzylammonium chloride, The sterilization according to any one of claims 1 to 3 Sheet. Component (C), sodium hydroxide, potassium hydroxide, sodium silicate, potassium silicate, either monoethanolamine, diethanolamine, claim 1, characterized in that at least one selected from triethanol amine 4 The sterilization sheet according to crab. The sterilizing sheet according to any one of claims 1 to 5 , wherein the aqueous sterilizing agent contains a chelating agent as the component (E).