JP7488126B2 - Disinfectant cleaning composition - Google Patents

Description

The present invention relates to a disinfectant cleaning composition and a method for disinfecting and cleaning hard surfaces.

Conventionally, cleaning agents combining a surfactant and a chelating agent have been used to clean hard surfaces such as bathtubs, toilets, sinks, drainage pipes, floors, and walls (Patent Documents 1 to 6).
The hard surfaces of the bathroom and other wet areas are prone to hydrophobic stains such as sebum and soap scum, which are formed by the hardness of the water and adhere firmly to the surfaces, making them one of the most difficult stains to clean. Such firmly attached stains become nutrients for microorganisms such as bacteria and mold, and because a moderate amount of moisture is always present, mold easily grows on the surfaces, and once mold grows, it cannot be cleaned without removing it with a strong oxidizing agent such as hypochlorous acid, which is a major burden. Slimy stains caused by bacteria can also be troublesome stains that are difficult to remove. Among microorganisms, it is known that microorganisms of the genus Methylobacterium cause pink slimy stains, and microorganisms of the genus Cladosporium cause black dot-like stains, which are typical stains that occur around the water. Patent documents 7 to 10 disclose fungicidal cleaning agent compositions for hard surfaces that contain water-soluble inorganic salts and nonionic bactericides and have excellent fungicidal effects against mold.

JP 2008-100964 A International Publication No. 2015/114994 JP 2008-247952 A JP 2002-155297 A JP 2001-335797 A JP 2019-112359 A JP 2019-151734 A JP 2019-151735 A JP 2019-151736 A JP 2019-151737 A

In bathrooms such as public baths, nursing homes, and hospitals, the cleaning area is large, so hand washing with a brush is inefficient. In order to clean effectively in a short time, it is possible to foam the cleaning agent with a foaming device such as a foam gun and apply it to the object to clean, but a technology that can demonstrate excellent sterilization effects against microorganisms, such as those of the genus Methylobacterium and those of the genus Cladosporium, and clean the object with such a cleaning method has not yet been fully studied. This is thought to be due to the fact that certain microorganisms that cause discomfort in our living space, in particular, have different drug resistances, environmental resistances such as temperature and pH, and contact with cleaning agents such as foam, and mechanical resistances such as wiping and scrubbing.

The present invention provides a disinfectant cleaning agent composition and cleaning method that exhibits excellent disinfecting effects against both microorganisms of the genus Methylobacterium and microorganisms of the genus Cladosporium, even in a foam-based cleaning form, and that enables foam cleaning of objects.

The present invention relates to a disinfectant cleaning agent composition which contains the following components (a) and (b) and optionally a component (c), in which the mass ratio (c)/(a) of the content of the component (a) to the content of the component (c) is 0.3 or less, the pH at 20° C. is 6 or more and 9 or less, and which has a disinfecting effect against microorganisms of the genus Methylobacterium and microorganisms of the genus Cladosporium:
Component (a): a polyoxyethylene alkylamine having an alkyl or alkenyl group having 8 to 14 carbon atoms and an average added mole number of oxyethylene groups of 9 moles or less; Component (b): a chelating agent; Component (c): an anionic surfactant;

The present invention also relates to a method for disinfecting and cleaning a hard surface, which comprises contacting a hard surface on which dirt containing microorganisms of the genus Methylobacterium and microorganisms of the genus Cladosporium is attached with foam produced using the disinfectant cleaning composition of the present invention.

The present invention provides a disinfectant cleaning agent composition and cleaning method that exhibits excellent disinfecting effects against both Methylobacterium and Cladosporium microorganisms, even when used in a foam-based cleaning format, and that enables foam cleaning of objects.

<Disinfecting cleaning agent composition>
The disinfectant cleaning composition of the present invention is a disinfectant cleaning composition which contains the above-mentioned components (a) and (b) and optionally a component (c), in which the mass ratio (c)/(a) of the content of component (a) to the content of component (c) in the composition is 0.3 or less, the pH at 20° C. is 6 or more and 9 or less, and which has a disinfecting effect against both microorganisms of the genus Methylobacterium and microorganisms of the genus Cladosporium. Hereinafter, when referring to the disinfecting effect in the present invention, unless otherwise specified, it means a disinfecting effect against both microorganisms of the genus Methylobacterium and microorganisms of the genus Cladosporium.

The component (a) is a polyoxyethylene alkylamine having an alkyl or alkenyl group having from 8 to 14 carbon atoms and an average added mole number of oxyethylene groups of 9 moles or less.
The component (a) is preferably a compound having one alkyl or alkenyl group having 8 to 14 carbon atoms.
The number of carbon atoms in the alkyl or alkenyl group of component (a) is 8 or more, preferably 10 or more, more preferably 12 or more and 14 or less, from the viewpoint of disinfecting effect.
From the viewpoint of disinfecting effect, the average number of moles of oxyethylene groups added in component (a) is 9 moles or less, preferably 7 moles or less, more preferably 5 moles or less, and preferably 1 moles or more, more preferably 2 moles or more.

From the viewpoint of the disinfecting effect, the (a) component is preferably (a1) a polyoxyethylene alkylamine having an alkyl group having 12 to 14 carbon atoms [hereinafter referred to as (a1) component]. The disinfectant cleaning composition of the present invention preferably contains (a1) component as (a). In the present invention, the ratio of (a1) component in (a) component is preferably 50% by mass or more, more preferably 60% by mass or more, even more preferably 70% by mass or more, and preferably 100% by mass or less.

The disinfectant cleaning composition of the present invention preferably contains component (a) at the time of use in terms of disinfecting effect of 0.001% by mass or more, more preferably 0.002% by mass or more, even more preferably 0.02% by mass or more, and preferably 1.0% by mass or less, more preferably 0.5% by mass or less. The disinfectant cleaning composition of the present invention may contain component (a) in this range, and in that case, it is suitable as a composition to be used as it is without diluting with water.

In addition, the disinfectant cleaning composition of the present invention has a content of component (a) of preferably 0.1% by mass or more, more preferably 0.2% by mass or more, even more preferably 0.5% by mass or more, even more preferably 1.0% by mass or more, and preferably 20% by mass or less, more preferably 15% by mass or less, even more preferably 10% by mass or less, even more preferably 5% by mass or less, and even more preferably 3% by mass or less. A composition with this content is suitable as a composition to be used by diluting with water.

Component (b) is a chelating agent. The chelating agent is preferably one or more compounds selected from aminocarboxylic acids, hydroxycarboxylic acids, hydroxyphosphonic acids, and salts thereof. Component (b) is more preferably one or more compounds selected from aminocarboxylic acids and salts thereof.

The aminocarboxylic acid and its salt may be one or more selected from ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid (NTA), iminodiacetic acid, diethylenetriaminepentaacetic acid (DPTA), N-hydroxyethyl-ethylenediaminetriacetic acid (HEDTA), methylglycine diacetic acid (MGDA), aspartic acid diacetic acid (ASDA), glutamic acid diacetic acid (GLDA), and their salts. The aminocarboxylic acid and its salt is preferably one or more selected from ethylenediaminetetraacetic acid and its salts, methylglycine diacetic acid and its salts, and L-glutamic acid diacetic acid and its salts.
The hydroxycarboxylic acid and its salt are preferably a compound selected from aliphatic hydroxycarboxylic acids and their salts, and examples of the hydroxycarboxylic acid and its salt include malic acid, citric acid and its salts.
Hydroxyphosphonic acids and salts thereof include compounds selected from 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) and salts thereof.
Examples of the salt of the sequestering agent include alkali metal salts, ammonium salts, amine salts, etc. Preferred are alkali metal salts, and more preferred are sodium salts or potassium salts.

The component (b) is preferably one or more selected from ethylenediaminetetraacetic acid (EDTA), methylglycine diacetic acid (MGDA), citric acid, malic acid, and salts thereof, more preferably one or more selected from ethylenediaminetetraacetic acid (EDTA), methylglycine diacetic acid (MGDA), citric acid, and salts thereof, and even more preferably one or more selected from ethylenediaminetetraacetic acid (EDTA), methylglycine diacetic acid (MGDA), and salts thereof.

In terms of soap scum cleaning performance, the content of component (b) in the disinfectant cleaning composition of the present invention at the time of use is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.1% by mass or more, even more preferably 0.2% by mass or more, and preferably 1.0% by mass or less, more preferably 0.8% by mass or less, even more preferably 0.5% by mass or less, and even more preferably 0.4% by mass or less. The disinfectant cleaning composition of the present invention may be a composition containing component (b) in this range, and in that case, it is suitable as a composition to be used as it is without diluting it with water.

The disinfectant cleaning composition of the present invention has a content of component (b) of preferably 0.2% by mass or more, more preferably 0.5% by mass or more, even more preferably 1.0% by mass or more, even more preferably 2.0% by mass or more, and preferably 20% by mass or less, more preferably 15% by mass or less, even more preferably 10% by mass or less, and even more preferably 5% by mass or less. A composition with this content is suitable as a composition to be used by diluting with water.

Component (c) is an anionic surfactant. From the viewpoint of cleaning properties, foaming properties and disinfecting effects, the anionic surfactant is preferably an anionic surfactant having a hydrocarbon group, preferably an alkyl group, with 8 or more carbon atoms, preferably 10 or more, and 20 or less, preferably 18 or less, more preferably 16 or less carbon atoms, and is preferably one or more anionic surfactants selected from alkylarylsulfonic acid type surfactants, sulfate ester type surfactants, alkanesulfonic acid type surfactants, olefinsulfonic acid type surfactants and sulfofatty acid ester type surfactants.

Examples of alkylarylsulfonic acid surfactants include alkylbenzenesulfonates. Specifically, alkylbenzenesulfonates having an alkyl group with 6 to 15 carbon atoms are included.

Examples of sulfate ester type surfactants include anionic surfactants having a hydrocarbon group having 8 to 20 carbon atoms and a sulfate ester group. From the viewpoint of cleaning properties, the hydrocarbon group has a carbon number of 8 or more, preferably 10 or more, more preferably 12 or more, and 20 or less, preferably 18 or less, more preferably 14 or less, and even more preferably 12 or less. The hydrocarbon group is preferably an alkyl group.
Examples of the sulfate type surfactant include alkyl sulfate salts and polyoxyalkylene alkyl ether sulfate salts.
As the alkyl sulfate ester salt, from the viewpoint of cleaning properties, an alkyl sulfate ester salt having an alkyl group having 8 or more carbon atoms, preferably 10 or more, and 20 or less, preferably 18 or less, more preferably 14 or less, and even more preferably 12 or less carbon atoms, and further having a linear or branched alkyl group, is preferred.
As the polyoxyalkylene alkyl ether sulfate, from the viewpoint of cleaning performance, a polyoxyalkylene alkyl ether sulfate having an alkyl group having 8 or more carbon atoms, preferably 10 or more and 20 or less, preferably 18 or less, more preferably 14 or less, and even more preferably 12 or less, and further having a linear or branched alkyl group, and an average addition molar number of oxyalkylene groups having 2 to 3 carbon atoms, from the viewpoint of cleaning performance, is preferably 0.1 or more, more preferably 0.3 or more, even more preferably 0.4 or more, and preferably 6 or less, more preferably 3 or less, and even more preferably 2.0 or less. The oxyalkylene group is preferably an ethylene group.

From the viewpoint of cleaning performance, examples of alkane sulfonate surfactants include alkanesulfonates having an alkane moiety with 8 or more carbon atoms, preferably 10 or more, more preferably 14 or more, and 20 or less, preferably 18 or less.

Examples of olefin sulfonic acid type surfactants include α-olefin sulfonates and internal olefin sulfonates. From the viewpoint of cleaning performance, the α-olefin sulfonates have an olefin portion with 8 or more carbon atoms, preferably 10 or more, more preferably 14 or more, and 22 or less, preferably 20 or less, and more preferably 18 or less. From the viewpoint of cleaning performance, the internal olefin sulfonates have an olefin portion with 8 or more carbon atoms, preferably 12 or more, more preferably 16 or more, and 24 or less, preferably 20 or less, and more preferably 18 or less.

Examples of sulfo fatty acid ester surfactants include α-sulfo fatty acid salts in which the fatty acid portion has 10 to 18 carbon atoms, and α-sulfo fatty acid lower alkyl ester salts in which the fatty acid portion has 10 to 18 carbon atoms and the ester portion has 1 to 5 carbon atoms.

As the salt of the anionic surfactant, inorganic salts selected from sodium salts, ammonium salts, potassium salts, magnesium salts, etc., and organic ammonium salts selected from monoethanolammonium salts, diethanolammonium salts, triethanolammonium salts, morpholinium salts, etc. are suitable.

From the viewpoints of cleaning properties, foaming properties and disinfecting effects, the anionic surfactant of component (c) is preferably one or more anionic surfactants selected from alkylbenzene sulfonates, alkyl sulfates and polyoxyalkylene alkyl ether sulfates (the average number of moles added of oxyalkylene groups, preferably oxyethylene groups, is 0.4 or more and 2.0 or less) having an alkyl group with 10 to 14 carbon atoms, more preferably alkylbenzene sulfonates having an alkyl group with 10 to 14 carbon atoms.

The disinfectant cleaning composition of the present invention optionally contains component (c). In the disinfectant cleaning composition of the present invention, the mass ratio (c)/(a) of the content of component (a) to the content of component (c) in the composition is 0.3 or less. (c)/(a) is preferably 0.2 or less, more preferably 0.1 or less, and is 0 or more, and may be 0. By limiting the content of component (c) in this way, in the present invention, even in a cleaning form using foam, foaming properties and excellent disinfecting effect against both microorganisms of the genus Methylobacterium and microorganisms of the genus Cladosporium can be obtained.

In the present invention, the content of the (c) component in the composition can be selected while satisfying this mass ratio. In the disinfectant cleaning composition of the present invention, the content of the (c) component during use is preferably less than 0.5% by mass, more preferably 0.2% by mass or less, even more preferably 0.1% by mass or less, even more preferably 0.08% by mass or less, even more preferably 0.05% by mass or less, even more preferably 0.02% by mass or less, and 0% by mass or more, or even 0% by mass, from the viewpoint of cleaning properties, foaming properties, and disinfecting effects. The disinfectant cleaning composition of the present invention may be a composition containing the (c) component within this range, and in that case, it is suitable as a composition to be used as it is without diluting with water. In addition, the disinfectant cleaning composition of the present invention has a content of the (c) component of preferably 5% by mass or less, more preferably 2% by mass or less, even more preferably 1% by mass or less, even more preferably 0.5% by mass or less, and 0% by mass or more, or even 0% by mass. A composition with this content is suitable as a composition to be used by diluting with water.

The disinfectant cleaning composition of the present invention may contain, as component (d), a surfactant other than components (a) and (c), to the extent that the effect of the present invention is not impaired. Component (d) may be one or more surfactants selected from cationic surfactants, nonionic surfactants other than component (a), and amphoteric surfactants.

Examples of cationic surfactants (hereinafter referred to as component (d1)) include quaternary ammonium salt cationic surfactants. Examples of quaternary ammonium salt cationic surfactants include quaternary ammonium salt cationic surfactants in which one or two of the groups bonded to the nitrogen atom are hydrocarbon groups having 8 to 16 carbon atoms, and the remaining groups are selected from the group consisting of alkyl groups having 1 to 3 carbon atoms, hydroxyalkyl groups having 1 to 3 carbon atoms, and arylalkyl groups (benzyl groups, etc.). Among these, quaternary ammonium salt cationic surfactants having bactericidal properties are preferred, and from the viewpoint of disinfecting effect, quaternary ammonium salt cationic surfactants having a benzyl group are preferred.

The component (d1) may be at least one cationic surfactant selected from the cationic surfactants represented by the following general formula (d1-1) and the cationic surfactants represented by the general formula (d1-2):

[In the formula, any one or two of R ^1d to R ^4d is a linear or branched alkyl or alkenyl group having 8 to 16 carbon atoms, or a group represented by the following formula:

the remainder being the same or different _, R 5d represents a linear or branched alkyl _or alkenyl group having 12 to 18 carbon atoms, and _X ^- represents a ^group which becomes a halogen ion, preferably a chloride ion, or an organic anion.]

From the viewpoints of cleaning properties, composition stability, and bactericidal effect, the (d1) component is preferably a dialkyl (carbon number 8 to 16) dimethylammonium halide, benzalkonium chloride (having an alkyl group having 8 to 16 carbon atoms), benzethonium chloride, or a cationic surfactant in which the counter ion of these is converted to another anion, and more preferably benzalkonium chloride (having an alkyl group having 8 to 16 carbon atoms).

When the disinfectant cleaning composition of the present invention contains the component (d1), the content of the component (d1) during use is preferably 0.02% by mass or more, more preferably 0.05% by mass or more, and preferably 1% by mass or less, more preferably 0.5% by mass or less. The disinfectant cleaning composition of the present invention may be a composition containing the component (d1) in this range, and in that case, it is suitable as a composition to be used as it is without diluting with water.

When the disinfectant cleaning composition of the present invention contains component (d1), the content of component (d1) is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and preferably 20% by mass or less, more preferably 10% by mass or less. A composition with this content is suitable as a composition to be used by diluting with water.

In the disinfectant cleaning composition of the present invention, the mass ratio (d1)/(a) of the content of the component (a) to the content of the component (d1) in the composition is preferably 0.2 or more, more preferably 0.3 or more, and is preferably 5.0 or less, more preferably 2.0 or less.

Nonionic surfactants other than component (a) [hereinafter referred to as component (d2)] include polyoxyalkylene alkyl ethers having an alkyl group with 10 to 18 carbon atoms, polyoxyalkylene alkenyl ethers having an alkenyl group with 10 to 18 carbon atoms, polyoxyalkylene sorbitan fatty acid esters having a fatty acid group with 10 to 18 carbon atoms, alkyl glycosides having an alkyl group with 8 to 18 carbon atoms, alkyl polyglycosides having an alkyl group with 8 to 18 carbon atoms, sucrose fatty acid esters having a fatty acid group with 8 to 18 carbon atoms, and alkyl polyglyceryl ethers having an alkyl group with 8 to 18 carbon atoms. Among these, polyoxyethylene alkyl ethers having an alkyl group with 10 to 16 carbon atoms and an average ethylene oxide addition mole number of 1 to 30 are preferred from the viewpoint of cleaning properties.

When the disinfectant cleaning composition of the present invention contains the component (d2), the content of the component (d2) during use is preferably 0.02% by mass or more, more preferably 0.05% by mass or more, and preferably 1% by mass or less, more preferably 0.5% by mass or less. The disinfectant cleaning composition of the present invention may be a composition containing the component (d2) in this range, and in that case, it is suitable as a composition to be used as it is without diluting with water.

When the disinfectant cleaning composition of the present invention contains the component (d2), the content of the component (d2) is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and preferably 20% by mass or less, more preferably 10% by mass or less. A composition with this content is suitable as a composition to be used by diluting with water.

Examples of amphoteric surfactants (hereinafter referred to as component (d3)) include amine oxides such as alkylamine oxides, betaines such as alkylaminoacetic acid betaines, alkylamidopropyl betaines, and alkylhydroxysulfobetaines, and amide amino acids (imidazoline betaines). Component (d3) may contain one or more selected from these. From the viewpoints of cleaning properties and stability of the composition, component (d3) is preferably an amine oxide and/or a betaine.

As the amine oxide, an amine oxide having a hydrocarbon group with 8 to 18 carbon atoms is preferable. Specifically, the compound represented by the following general formula (d3-1) can be mentioned.

[In the formula, R ^6d is a hydrocarbon group having from 8 to 18 carbon atoms, preferably an alkyl or alkenyl group having from 8 to 16 carbon atoms, R ^7d is an alkylene group having from 1 to 6 carbon atoms, and D is a group selected from -(CO)O-, -(CO)(NH)-, -O(CO)-, and -(NH)(CO)-, k is the number 0 or 1, and R ^8d and R ^9d are each an alkyl or hydroxyalkyl group having 1 to 3 carbon atoms.]

In general formula (d3-1), R ^6d is preferably an alkyl group or alkenyl group having from 10 to 14 carbon atoms, more preferably a lauryl group (or a lauric acid residue) and/or a myristyl group (or a myristic acid residue). D is preferably -(CO)O- or -(CO)(NH)-, more preferably -(CO)(NH)-. The number of carbon atoms in R ^7d is preferably 2 or 3, and each of R ^8d and R ^9d is preferably a methyl group.

Betaines having a hydrocarbon group with 8 to 18 carbon atoms are preferred. Specific examples include compounds represented by the following general formula (d3-2).

[In the formula, R ^10d is a hydrocarbon group having 8 to 18 carbon atoms, preferably an alkyl or alkenyl group, and R ^11d is an alkylene group having 1 to 6 carbon atoms. E is a group selected from -(CO)O-, -(CO)(NH)-, -O(CO)-, -(NH)(CO)- and -O-, and j is the number 0 or 1. R ^12d and R ^13d are each an alkyl group or hydroxyalkyl group having 1 to 3 carbon atoms, and R ^14d is an alkylene group having 1 to 5 carbon atoms which may be substituted with a hydroxy group. T is a group selected from -SO ₃ ^- , -OSO ₃ ^- and -COO ^- .]

In general formula (e2), R ^10d is preferably an alkyl or alkenyl group having 9 or more carbon atoms, more preferably 10 or more, and preferably 17 or less, more preferably 16 or less. R ^11d is preferably an alkylene group having 1 to 4, more preferably 2 or 3, carbon atoms, and j is preferably 0. R ^12d and R ^13d are each preferably a methyl group, an ethyl group, or a hydroxyethyl group. R ^14d is preferably an alkylene group having 1 to 3 carbon atoms which may be substituted with a hydroxy group. T is preferably --SO ₃ ^-- from the viewpoint of cleaning effect.

When the disinfectant cleaning composition of the present invention contains the component (d3), the content of the component (d3) during use is preferably 0.02% by mass or more, more preferably 0.05% by mass or more, and preferably 1% by mass or less, more preferably 0.5% by mass or less. The disinfectant cleaning composition of the present invention may be a composition containing the component (d3) in this range, and in that case, it is suitable as a composition to be used as it is without diluting with water.

When the disinfectant cleaning composition of the present invention contains the component (d3), the content of the component (d3) is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and preferably 20% by mass or less, more preferably 10% by mass or less. A composition with this content is suitable as a composition to be used by diluting with water.

The disinfectant cleaning composition of the present invention may contain any of the following ingredients (excluding ingredients (a) to (d)): solvents, fragrances, colorants, preservatives, antioxidants, etc., to the extent that the effects of the present invention are not impaired.

The disinfectant cleaning composition of the present invention preferably contains water. That is, the remainder other than the optional components such as the components (a), (b), and (c) to (d) may be water. The same applies to the composition when used. The disinfectant cleaning composition of the present invention contains water in an amount of preferably 50% by mass or more, more preferably 60% by mass or more, even more preferably 70% by mass or more, even more preferably 80% by mass or more, and preferably 99% by mass or less, more preferably 95% by mass or less. A composition with this content is suitable as a composition to be used by diluting with water. The water may be ion-exchanged water, sterilized ion-exchanged water, tap water, or the like.

From the viewpoint of disinfecting effect, the disinfecting cleaning composition of the present invention has a pH at 20°C of 6 or more, preferably 7 or more, and 9 or less, preferably 8 or less.

The disinfectant cleaning composition of the present invention has a disinfecting effect against both microorganisms of the genus Methylobacterium and microorganisms of the genus Cladosporium. For example, in a bactericidal test using a suspension test method, for example, a method for evaluating bactericidal and fungicidal properties using a suspension test method under the conditions of the Examples described below, if the log reduction in viable cell count (ΔLog viable cell count) is 2 or more for both microorganisms of the genus Methylobacterium and microorganisms of the genus Cladosporium, it may be determined that the composition has a disinfecting effect against both microorganisms of the genus Methylobacterium and microorganisms of the genus Cladosporium.

The disinfectant cleaning composition of the present invention may be a disinfectant cleaning composition comprising the above-mentioned components (a) and (b) and, optionally, a component (c), in which the mass ratio (c)/(a) of the amount of component (a) to the amount of component (c) is 0.3 or less, the pH at 20°C is 6 or more and 9 or less, and the composition has a disinfecting effect against both microorganisms of the genus Methylobacterium and microorganisms of the genus Cladosporium.
The present invention also provides a method for producing a disinfectant cleaning composition comprising the above-mentioned components (a) and (b) and, optionally, component (c), in which the mass ratio (c)/(a) of the amount of component (a) to the amount of component (c) is 0.3 or less, the pH of the disinfectant cleaning composition at 20° C. is 6 or more and 9 or less, and the disinfectant cleaning composition has a disinfecting effect against both microorganisms of the genus Methylobacterium and microorganisms of the genus Cladosporium.
The matters described in relation to the disinfectant cleaning composition of the present invention can also be appropriately applied to these embodiments. In such cases, the contents in the disinfectant cleaning composition may be replaced with blending amounts.

The disinfectant cleaning composition of the present invention may be for hard surfaces, and may further be for hard surfaces on which dirt containing microorganisms of the genus Methylobacterium and microorganisms of the genus Cladosporium is attached. The disinfectant cleaning composition of the present invention is suitable for cleaning hard surfaces such as bath facilities, bathrooms, bathtubs, washbasins, tiles, restrooms, washstands, mirrors, kitchen sinks, countertops, water facilities, food processing equipment, cooking equipment, etc., and is particularly suitable for use in bathrooms. Here, the term "for use in bath facilities" or "for use in bathrooms" refers not only to bathrooms, but also to other articles and structures having hard surfaces present in bath facilities or bathrooms, such as bathtubs, washbasins, floors, walls, work tables, and ceilings. The present invention is preferably intended for use in bath facilities. The disinfectant cleaning composition of the present invention may also be for use in foam cleaning. The disinfectant cleaning composition of the present invention is preferably applied to hard surfaces in the form of a foam.

<How to disinfect and clean hard surfaces>
The method for disinfecting and cleaning a hard surface of the present invention is a method for disinfecting and cleaning a hard surface, which comprises contacting a foam produced using the disinfectant cleaning agent composition of the present invention with a hard surface on which dirt containing microorganisms of the genus Methylobacterium and microorganisms of the genus Cladosporium is attached.
The disinfectant cleaning method of the present invention can be appropriately applied to the matters described in the disinfectant cleaning composition of the present invention. Specific examples and preferred embodiments of the components (a) to (c) are also the same.

In the method for disinfecting and cleaning hard surfaces of the present invention, it is preferable to use the disinfectant cleaning composition of the present invention that contains each component in the content amount at the time of use described above.

In the present invention, it is preferable to bring the disinfectant cleaning agent composition of the present invention into contact with the hard surface using a foaming device. Examples of the foaming device include a foam gun or a trigger sprayer.

In the present invention, the disinfectant cleaning composition of the present invention can be diluted with water, for example, 1-fold or more, further 5-fold or more, further 8-fold or more, and further 100-fold or less, further 60-fold or less, to foam. In this case, it is preferable to use the disinfectant cleaning composition of the present invention, which contains each component in an amount suitable for the diluted composition, for dilution.

The foam gun is not particularly limited as long as it does not impede the effects of the present invention, but examples thereof include a foam gun having an aspirator structure with a mesh of a specified roughness, for example, a mesh with a mesh number and wire diameter defined by JIS G3555 (:2004) of 40 mesh or more, 60 mesh or less, and 0.15 mm or more, 0.25 mm or less, attached to the nozzle. The material of the mesh is not particularly limited, but examples thereof include metal, resin, ceramics, glass fiber, carbon fiber, etc. Examples of metals include stainless steel, copper, brass, aluminum, etc. Examples of resins include nylon, PET, polyethylene, polypropylene, Teflon (registered trademark), etc. Examples of stainless steel include SUS304, SUS316, SUS316L, SUS310S, SUS420J2, etc., with SUS304 being preferred in terms of chemical resistance.

The mesh attached to the nozzle of the foam gun has a mesh size of 40 mesh or more and 60 mesh or less as defined by JIS G3555 (:2004). The mesh attached to the nozzle of the foam gun has a wire diameter of 0.15 mm or more and 0.25 mm or less as defined by JIS G3555 (:2004). The diameter (inner diameter) of the nozzle is preferably 10 mm or more, more preferably 15 mm or more, even more preferably 20 mm or more, and more preferably 50 mm or less, even more preferably 4 mm or less, even more preferably 30 mm or less. The shape and size of the mesh can be selected appropriately according to the diameter of the nozzle.

The foam gun may have an aspirator structure. Examples of foam guns with an aspirator structure include formers in the Hydro Foamer Series manufactured by Hydro Systems Company (e.g., Models 481, 482, etc.).

The foam gun, for example, comprises a storage section for the disinfectant cleaning composition of the present invention, a means for mixing the disinfectant cleaning composition in the storage section with water from the outside, a means for foaming the mixture of the disinfectant cleaning composition and water, and an opening for spraying the foamed mixture. The aspirator structure functions as part of the means for mixing the disinfectant cleaning composition with water from the outside. The net functions as part of the means for foaming the mixture of the disinfectant cleaning composition and water. Furthermore, the foam gun comprises a water flow path, a flow path for the disinfectant cleaning composition, a flow path for the mixture of water and the disinfectant cleaning composition, and a means for supplying air from the outside. The foam gun is provided with a mechanism for circulating water, and it is preferable that the water flow path constitutes the aspirator structure.

In the present invention, it is preferable to put the concentrate of the disinfectant cleaning agent composition into the concentrate container (vessel) of a foam gun having an aspirator structure, connect the concentrate suction pipe of the aspirator to a water faucet with a hose, and use the water pressure from the water supply to flow the liquid and foam it.

In the present invention, the amount of water flowing through the foam gun is, for example, 1 L/min or more and 20 L/min or less from the viewpoint of cleaning properties and disinfecting effect, and the dilution ratio is, for example, 8 times or more and 100 times or less. The amount of water flowing through the foam gun is preferably 18 L/min or less, and more preferably 16 L/min or less. The fluctuation in the amount of water during washing is preferably within the range of 10 to 20% of the water amount. The dilution ratio is preferably 100 times or less, more preferably 80 times or less, more preferably 60 times or less, and even more preferably 40 times or less. This dilution ratio is preferably the dilution ratio of the disinfectant cleaning agent composition of the present invention that contains each component in a content suitable for the composition to be used after dilution as described above.

In the present invention, the method of applying the disinfectant cleaning composition to an object with a foam gun may be continuous, intermittent or discontinuous. From the viewpoint of cleaning properties and disinfecting effect, the amount of the disinfectant cleaning composition to be applied per ¹ m2 of cleaning area is preferably, for example, 3 g or more, more preferably 5 g or more, even more preferably 7 g or more, and 80 g or less, more preferably 50 g or less, even more preferably 30 g or less.

In the present invention, after the foam is brought into contact with the hard surface, it may be held for a certain period of time. From the viewpoints of workability, cleaning ability, and sterilization effect, the holding time is preferably 1 minute or more, more preferably 3 minutes or more, more preferably 5 minutes or more, and even more preferably 7 minutes or more, and more preferably 60 minutes or less, more preferably 45 minutes or less, more preferably 30 minutes or less, more preferably 20 minutes or less, and even more preferably 15 minutes or less. It is preferable to leave the foam as it is while it is being held, but it is also possible to add a small amount of water, etc.

In the present invention, after the foam is brought into contact with the hard surface, it is preferable to rinse the hard surface with water. The temperature of the water used for rinsing is, for example, 10°C or higher, further 20°C or higher, and 70°C or lower. Tap water can be used as the rinsing water, and it may be heated to adjust the water temperature to the above-mentioned preferred water temperature. Generally, rinsing is performed by hand using a hose or the like.

The hard surfaces on which dirt containing microorganisms of the genus Methylobacterium and microorganisms of the genus Cladosporium are attached, which are the subject of the disinfecting and cleaning method of the present invention, include the hard surfaces described in the disinfecting and cleaning composition of the present invention. Specifically, the hard surfaces include the hard surfaces of facilities such as bathing facilities, food processing facilities, and cooking facilities, and the hard surfaces of bathing facilities are preferred. The hard surfaces may include structures such as floors, walls, work tables, and ceilings of these facilities, and hard surfaces of items such as equipment and utensils used in these facilities. The present invention is preferably directed to bathing facilities. Generally, bathing facilities are equipped with a large bathtub that is used by a relatively large number of bathers at the same time, and may also be equipped with a small bathtub that is used by a relatively small number of bathers. Bathing facilities are often used as so-called public baths, and cleaning them is time-consuming because the bathtub, floor, walls, ceiling, etc. are large in scale. In the present invention, cleaning with foam using a foaming device such as a foam gun can efficiently remove dirt including microorganisms of the genus Methylobacterium and Cladosporium, dramatically improving work efficiency.

<Ingredients>
[Component (a)]
a-1: Cocoalkylamine EO adduct (EO2)
a-2: Cocoalkylamine EO adduct (EO5)
a-3: Laurylamine EO adduct (EO1)
a-4: Laurylamine EO adduct (EO2)
a-5: Laurylamine EO adduct (EO7)
a-6: Decylamine EO adduct (EO2)
a-7: Myristylamine EO adduct (EO2)
a-8: Laurylamine EO adduct (EO5)
EO is an abbreviation for ethylene oxide, and the number following EO is the average number of moles of ethylene oxide added to the amine (hereinafter the same).

[Component (a') (comparison component to component (a)]
a'-1: Cocoalkylamine EO adduct (EO15)
a'-2: Stearylamine EO adduct (EO2)
a'-3: Stearylamine EO adduct (EO8)
a'-4: Hexadecylamine EO adduct (EO2)

[Component (b)]
b-1: Ethylenediaminetetraacetate tetrasodium
b-2: Methylglycine diacetate trisodium

[Component (c)]
c-1: Sodium dodecylbenzenesulfonate, Neopelex G-15, Kao Corporation

[Component (d)]
d1-1: Alkyl (8-18 carbon atoms, average 10) benzyldimethylammonium chloride d2-1: Polyoxyethylene (EO23) lauryl ether, Emulgen 123P, Kao Corporation d3-1: Lauryl dimethylamine oxide d3-2: Lauryl hydroxysulfobetaine, Amphitol 20HD, Kao Corporation d3-3: Lauryl dimethylaminoacetate betaine, Amphitol 20BS, Kao Corporation

<Examples 1 to 3, Comparative Examples 1 to 3>
The disinfectant cleaning agent compositions shown in Tables 1 to 3 were prepared using the above-mentioned blended components. The following evaluations were carried out using these compositions. The results are shown in Tables 1 to 3.

<Fungicidal activity evaluation method>
Cladosporium sp. PA-4, an environmental isolate of the genus Cladosporium, a filamentous fungus that prefers the living environment, was cultured on a CP-added potato dextrose agar plate medium (Kohjin Bio Co., Ltd.) at 25 ° C./7 days, and then 5 mL of a spore recovery solution (0.05% Tween 80 solution manufactured by Wako Pure Chemical Industries, Ltd. prepared with physiological saline manufactured by Otsuka Pharmaceutical Factory, Ltd.) was dropped onto the agar plate, and the fungal solution was collected by gently rubbing it with a Conlarge stick (manufactured by Nissui Pharmaceutical Co., Ltd.). The collected fungal solution was then filtered using Miracloth (manufactured by CALBIOCHEM) to remove the mycelium, and the resulting solution was centrifuged (8,000 rpm, 25 ° C., 5 min) and the supernatant was removed. These operations were repeated 2 or 3 times, and the OD was adjusted to 40 to obtain a test spore solution.

The disinfectant cleaning composition in Tables 1 to 3 was used as the test liquid, and 20 μL of the prepared test spore liquid was mixed with 2 mL of the test liquid, and the mixture was allowed to come into contact at 25°C for 10 minutes. 200 μL of the mixture was then aliquoted and suspended in 1800 μL of LP dilution liquid (prepared according to the package insert of Nissui Pharmaceutical Co., Ltd.) to inactivate the test liquid. This was then further diluted with saline, and spread on "KBM" CP-added potato dextrose agar medium (Kohjin Bio Co., Ltd.) and cultured at 25°C for 4 days. The ΔLog viable count was calculated from the number of colonies obtained.

<Method for evaluating bactericidal activity>
Methylobacteriumfujisawaense GP-1, an environmental isolate of the genus Methylobacterium, was cultured in potato dextrose broth (Potato Dextrose Broth reagent manufactured by Becton Dickinson, prepared according to the instructions) at 30°C for 1 day with shaking, and the bacterial solution was centrifuged (4,000 rpm, 25°C, 10 min) and the supernatant was removed. Then, physiological saline (manufactured by Otsuka Pharmaceutical Factory, Inc.) was added and the solution was redispersed, followed by centrifugation. These operations were repeated twice, and the solution was adjusted to OD = 0.1 with physiological saline to prepare a test bacterial solution.

The disinfectant cleaning composition in Tables 1 to 3 was used as the test liquid, and 2 mL of the test liquid was mixed with 160 μL of the prepared test spore liquid, and the mixture was allowed to come into contact at 25°C for 10 minutes. 200 μL of the mixture was then aliquoted and suspended in 1800 μL of LP dilution liquid (prepared according to the package insert of Nissui Pharmaceutical Co., Ltd.) to inactivate the test liquid. This was then further diluted with saline, and then spread onto potato dextrose agar medium (Kanto Chemical Co., Ltd.) and cultured at 25°C for 4 days. The ΔLog viable count was calculated from the number of colonies obtained.

<Soap scum cleaning performance evaluation>
A model soap scum stain prepared with reference to the composition of soap scum stains adhering to bathrooms was formed into a film on a polypropylene plate (size 8 cm x 12 cm). The model soap scum stain was prepared and formed into a film by immersing the plate in an aqueous solution (2% by mass) of solid soap (manufactured by Kao Corporation, "White") and an aqueous calcium chloride solution (0.7% by mass) in that order, and then drying the plate. The model soap scum stain was prepared and formed into a film by repeating this process 10 times. After forming a film of the model soap scum stain on the plate, 30 μl of the disinfectant cleaning agent composition shown in Tables 1 to 3 was dropped onto the dirty part of the plate, and the plate was left at 25 ° C. for 10 minutes, washed with water, and the cleaning power was evaluated by visual inspection by four researchers engaged in the study according to the following criteria, and the average value was used as the evaluation point. This evaluation correlates with the cleaning property when the disinfectant cleaning agent composition is used in a foam form, and serves as an index for comparing the cleaning property in foam cleaning.
5: All stains were removed from the areas where the composition was dropped.
4: Not all of the stain on the portion where the composition was dropped was removed, but 3/4 or more of the stain was removed.
3: The stain on the portion where the composition was dropped was not completely removed, but more than half of the stain was removed.
2: The stain on the portion where the composition was dropped was not completely removed, but at least 1/4 of the stain was removed.
1: The stain on the portion where the composition was dropped was hardly removed.

In Table 3, the disinfectant cleaning composition of the examples is rated at 3 points or higher when evaluated for soap scum cleaning ability using the method described above.

<Example 4 and Comparative Example 4>
The disinfectant cleaning composition of Example 1 was replaced with the disinfectant cleaning composition of Example 1, and the disinfectant and bactericidal properties were evaluated in the same manner as in Example 1, except that the disinfectant cleaning composition of Table 4 was used. The results are shown in Table 4.

Claims (12)

Contains the following components (a) and (b) and optionally component (c):
the mass ratio (c)/(a) of the content of the component (a) to the content of the component (c) is 0.3 or less;
The pH at 20° C. is 7 or more and 9 or less,
The composition further contains, as the component (d), one or more surfactants selected from (d1) a cationic surfactant (hereinafter referred to as the component (d1)) and (d2) a nonionic surfactant other than the component (a) (hereinafter referred to as the component (d2));
when the component (d1) is contained as the component (d), the mass ratio (d1)/(a) of the content of the component (a) to the content of the component (d1) in the composition is 0.2 or more and 5.0 or less;
Has a disinfecting effect against microorganisms of the genus Methylobacterium and the genus Cladosporium.
Disinfectant cleaning composition.
Component (a): a polyoxyethylene alkylamine having an alkyl or alkenyl group having 8 to 14 carbon atoms and an average added mole number of oxyethylene groups of 9 moles or less; Component (b): one or more chelating agents selected from ethylenediaminetetraacetic acid (EDTA), methylglycine diacetic acid (MGDA), and salts thereof; Component (c): an anionic surfactant; The disinfectant cleaning composition according to claim 1, which contains, as component (a), (a1) a polyoxyethylene alkylamine having an alkyl group having 10 to 14 carbon atoms [hereinafter referred to as component (a1)]. The disinfectant cleaning composition according to claim 2, in which the proportion of component (a1) in component (a) is 50% by mass or more. The disinfectant cleaning composition according to any one of claims 1 to 3, wherein the content of component (c) during use is 0% by mass or more and less than 0.5% by mass. The disinfectant cleaning composition according to any one of claims 1 to 4, wherein the content of the component (a) in the composition is 0.1% by mass or more and 10% by mass or less. The disinfectant cleaning agent composition according to any one of claims 1 to 5, wherein the content of the component (b) in the composition is 0.2% by mass or more and 10% by mass or less. A method for disinfecting and cleaning a hard surface, comprising contacting a foam produced by using the disinfectant cleaning composition according to any one of claims 1 to 6 with a hard surface on which dirt containing microorganisms of the genus Methylobacterium and microorganisms of the genus Cladosporium is attached. The method for disinfecting and cleaning a hard surface according to claim 7 , wherein the disinfecting and cleaning agent composition is foamed using a foaming device and the foam is brought into contact with the hard surface. The method for disinfecting and cleaning a hard surface according to claim 8 , wherein the foaming device is a foam gun or a trigger sprayer. The method for disinfecting and cleaning a hard surface according to any one of claims 7 to 9 , wherein after contacting the hard surface with the foam, the hard surface is rinsed with water. The method for disinfecting and cleaning a hard surface according to any one of claims 7 to 10 , wherein the disinfectant cleaning composition is diluted with water at a ratio of 1 to 100 times to foam the composition. The method for sterilizing and cleaning a hard surface according to any one of claims 7 to 11 , wherein the hard surface is a hard surface of a bath facility.