JP2023118358A - Sterilizing and washing composition for hard surfaces - Google Patents

Abstract

To provide a sterilizing and washing composition for hard surfaces that has high washing power to stubborn stains such as sebum soil and soap soil and high sterilizing power to microbes such as Staphylococcus aureus, and also has high compounding stability.SOLUTION: A sterilizing and washing composition for hard surfaces contains (a) 1 mass% or more and less than 10 mass% of a solvent with a LogP of less than 1.0, (b) 1.5 mass% or more and 10 mass% or less of an aromatic alcohol with a LogP of 1.3 or more, (c) a surfactant and water, with the mass ratio of the content of (a) to the content of (b), (a)/(b), of 0.10 or more and less than 1.0. The composition has a pH of 8 or more and 12 or less at 25°C.SELECTED DRAWING: None

Description

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

Facilities in a residential environment have hard surfaces made of plastics, tiles, metals, etc., and various contaminants adhere to these hard surfaces in daily life. In particular, environments around water such as bathrooms and kitchens have high humidity, and the presence of sebum stains, food stains, or soap scum stains facilitates the propagation of microorganisms such as bacteria. Therefore, when cleaning hard surfaces such as bathrooms and kitchens, it is desired to obtain both detergency and sterilization power, and it is standard to mix sterilization ingredients in detergents for hard surfaces. It has become.

Patent Document 1 discloses a detergent composition having excellent detergency and sterilization power by combining an anionic surfactant, a silver compound or polyhexamethylene biguanide as an antibacterial agent, and polylysine.
In Patent Documents 2 and 3, based on a quaternary ammonium salt type cationic surfactant, benzyl alcohol, butoxyethoxyethanol, an amphoteric surfactant or an anionic surfactant is blended at a specific ratio, and a microorganism-derived Disclosed is a detergent composition having excellent detergency against pink stains.
Patent Document 4 discloses a surface sterilizing detergent composition containing a betaine-type amphoteric surfactant, a specific aromatic alcohol, and a sequestering agent in a specific ratio, and having a pH of 2 or more and 6 or less. .
Patent Document 5 describes the combined use of two sequestering agents including a phosphonic acid-based sequestering agent, a glycol-based solvent, and a surfactant, and specifies the mass ratio of the anionic surfactant and the sequestering agent. and a pH of 5.8 to 7.5.

Japanese Patent Application Laid-Open No. 2020-76103 JP 2014-132063 A JP 2014-132062 A JP 2015-113455 A JP 2018-150523 A

As described above, various stains such as soap scum stains and sebum stains adhere to hard surfaces in a home environment such as a bathroom. These stains not only promote the growth of microorganisms, but also inhibit the effect of disinfectants against microorganisms, so a sterilization cleaning technique effective against both stains and microorganisms is desired. However, for example, when using a quaternary ammonium salt-type cationic surfactant as a disinfectant, if it is used in combination with an anionic surfactant for the purpose of thoroughly removing stains, these complexes are formed due to electrostatic interaction. Therefore, both the bactericidal effect and the detergency are lowered, and a satisfactory effect cannot be obtained in some cases. In addition, there is a problem that weakly alkaline to alkaline liquids are less effective against microorganisms such as Staphylococcus aureus on many hard surfaces. Furthermore, the sterilizing detergent is often a one-liquid formulation, and it is desired that it has excellent blending stability such as appearance.

The present invention provides a sterilizing detergent composition for hard surfaces that has good detergency against stubborn stains such as sebum stains and soap scum, has excellent sterilizing power against microorganisms such as Staphylococcus aureus, and has excellent formulation stability. A method for cleaning hard surfaces is provided.

The present invention provides (a) a solvent having a Log P of less than 1.0 [hereinafter referred to as component (a)] of 1% by mass or more and less than 10% by mass, and (b) an aromatic alcohol having a Log P of 1.3 or more [hereinafter referred to as (b) Component] 1.5% by mass or more and 10% by mass or less, (c) surfactant [hereinafter referred to as component (c)] and water, and the content of component (a) and the content of component (b) It relates to a hard-surface sterilizing cleaning composition having a mass ratio (a)/(b) of 0.10 or more and less than 1.0 and a pH of 8 or more and 12 or less at 25°C.

The present invention also relates to a method for sterilizing a hard surface, comprising applying the sterilizing cleaning agent composition for a hard surface of the present invention to the hard surface and then rinsing the hard surface without scrubbing.

INDUSTRIAL APPLICABILITY According to the present invention, there is provided a sterilizing detergent composition for hard surfaces, which has good detergency against stubborn stains such as sebum stains and soap scum, has excellent sterilizing power against microorganisms such as Staphylococcus aureus, and has excellent formulation stability. A method is provided for cleaning the hard surface used.

[Bactericidal cleaning agent composition for hard surfaces]
The hard surface sterilizing cleaning composition of the present invention contains (a) component 1% by mass or more and less than 10% by mass, (b) component 1.5% by mass or more and 10% by mass or less, (c) component and water. , (a) / (b), which is the mass ratio of the content of component (a) to the content of component (b), is 0.10 or more and less than 1.0, and the pH at 25 ° C. is 8 or more and 12 or less is.

Component (a) is a solvent with a LogP of less than 1.0. The hard-surface sterilizing cleaning composition of the present invention preferably contains a glycol ether solvent as component (a).
As component (a), one or more solvents selected from the following compounds (a1) to (a3) are preferred. (a2) is an example of a glycol ether solvent.
(a1): an aliphatic alcohol having a molecular weight of 60 or more and 500 or less and a Log P of less than 1.0 (a2): an aliphatic glycol ether having a molecular weight of 60 or more and 500 or less and a Log P of less than 1.0 (a3): molecular weight is 60 or more and 500 or less, and LogP is less than 1.0

The LogP of component (a) is preferably 0 or more, more preferably 0.5 or more from the viewpoint of bactericidal effect, and less than 1.0 from the viewpoint of blending stability.

In the present invention, the LogP value is a coefficient that indicates the affinity of an organic compound for water and 1-octanol. The 1-octanol/water partition coefficient P is the partition equilibrium when a trace amount of a compound is dissolved as a solute in a solvent of two liquid phases of 1-octanol and water, and is the ratio of the equilibrium concentrations of the compound in each solvent, It is common to express them in their logarithmic LogP form to base 10. The LogP values of many compounds have been reported, and many values can be found in databases available from, for example, Daylight Chemical Information Systems, Inc. (Daylight CIS). If there is no LogP value actually measured, it can be calculated using a program such as "PerkinElmer ChemDraw 19.1" available from the PerkinElmer website. This program can get the value of LogP.

The fragment approach is based on the chemical structure of the compound and considers the number of atoms and the type of chemical bonds (cf. A. Leo, Comprehensive Medicinal Chemistry, Vol.4, C. Hansch, P.G. Sammens, J.B. Taylor and C.A. Ramsden, Eds., p.295, Pergamon Press, 1990). In the present invention, the LogP value calculated by the program PerkinElmer ChemDraw 19.1 is used if there is no LogP measured.

(a1) may be an alcohol whose main chain is an aliphatic hydrocarbon group. When the main chain of (a1) has a side chain, the side chain may contain a heteroatom. As (a1), fatty alcohols having a molecular weight of 60 or more and 500 or less and a Log P of less than 1.0 include 1-propanol (molecular weight: 60, Log P: 0.55), 2-propanol (molecular weight: 60, LogP: 0.38), 1-butanol (molecular weight: 74, LogP: 0.97), 2-butanol (molecular weight: 74, LogP: 0.87), tert-butanol (molecular weight: 74, LogP: 0.60 ), and cyclopentanol (molecular weight: 86, LogP: 0.86). (a1) other than these includes 3-methoxy-3-methylbutanol (molecular weight: 118, LogP: 0.21).

As the aliphatic glycol ether (a2) having a molecular weight of 60 or more and 500 or less and a LogP of less than 1.0, a compound having a LogP of less than 1.0 represented by the following general formula (a-2) is preferable.
R ^1a O—(R ^2a O) _n —H (a-2)
(In the formula, R ^1a is an aliphatic hydrocarbon group having 1 to 8 carbon atoms, R ^2a is an alkylene group having 2 or 3 carbon atoms, and n is an integer of 1 to 4.)

R ^1a is preferably an alkyl or alkenyl group having 3 or more and 6 or less carbon atoms from the viewpoint of bactericidal effect.
From the viewpoint of bactericidal effect, n is preferably 3 or less, more preferably 2 or less.

(a2) specifically includes propylpropylene diglycol (molecular weight: 176, LogP: 0.88), butyl glycol (molecular weight: 118, LogP: 0.81), propylpropylene glycol (molecular weight: 118, LogP: 0.71), butyl diglycol (molecular weight: 162, LogP: 0.66), 2-tert-butoxyethanol (molecular weight: 118, LogP: 0.45), isobutyl diglycol (molecular weight: 162, LogP: 0.45). 07), methylpropylene glycol (molecular weight: 90, LogP: 0.66), and one or more selected from methyl glycol (molecular weight: 76, LogP: -0.43). Diglycol is preferred.

As (a3), an aliphatic diol having a molecular weight of 60 or more and 500 or less and a LogP of less than 1.0, a compound represented by the following general formula (a-3) and having a LogP of less than 1.0 is preferable. . (a3) does not include (a2).
R ^3a —CH(OH)—(CH ₂ ) _m —CH ₂ OH (a-3)
(Wherein, R ^3a is a hydrogen atom, an aliphatic hydrocarbon group having 1 to 7 carbon atoms, R ^4a O, or R ^4a OCH ₂ , and R ^4a is a hydrocarbon group having 1 to 7 aliphatic carbon atoms and m is an integer of 0 or 1 or more and 6 or less, provided that the total number of carbon atoms in the compound is 4 or more and 10 or less.)

From the viewpoint of bactericidal effect, R ^3a is preferably a hydrogen atom or an alkyl or alkenyl group having 2 to 7 carbon atoms, more preferably an alkyl or alkenyl group having 3 to 7 carbon atoms, and 4 to 7 carbon atoms. is more preferable.
R ^4a is preferably an alkyl or alkenyl group having 2 to 7 carbon atoms, more preferably an alkyl or alkenyl group having 3 to 7 carbon atoms, and even more preferably an alkyl or alkenyl group having 4 to 7 carbon atoms. .
m is preferably 0 or 1 from the viewpoint of bactericidal effect.

(a3) specifically includes 1,2-hexanediol (molecular weight: 118, LogP: 0.85), 1,2-pentanediol (molecular weight: 104, LogP: 0.43), propylene glycol (molecular weight : 76, LogP: -0.47), 1,6-hexanediol (molecular weight: 118, LogP: 0.60), 1,2-butanediol (molecular weight: 90, LogP: 0.01), 1,4 -butanediol (molecular weight: 90, LogP: -0.23), 1,3-butanediol (molecular weight: 90, LogP: 0.-0.37), 1,5-pentanediol (molecular weight: 104, LogP: 0.19), and pentyl glyceryl ether (molecular weight: 162, LogP: 0.69).

Component (a) is preferably a glycol ether solvent from the viewpoint of bactericidal effect, and more preferably one or more selected from aliphatic glycol ethers having a molecular weight of 60 or more and 500 or less and a LogP of less than 1.0 of (a2). A compound represented by general formula (a-2) and having a LogP of less than 1.0 is more preferable.

Component (b) is an aromatic alcohol having a LogP of 1.3 or higher.
Component (b) has a LogP value of 1.3 or more, preferably 1.4 or more, from the viewpoint of bactericidal effect and distribution of component (b) from the aqueous phase to bacterial cells, and bactericidal effect and formulation stability from the viewpoint of, it is preferably 3.0 or less, more preferably 2.0 or less, and still more preferably 1.5 or less.

The aromatic alcohol of component (b) has an aromatic group and a hydroxy group, preferably a compound having an aromatic group and a hydroxy group and a molecular weight of 106 or more and 250 or less. An aromatic group is an aromatic hydrocarbon group, and includes a phenyl group, a benzyl group, and a phenethyl group.

Component (b) is preferably a compound represented by the following general formula (b-1) from the viewpoint of bactericidal effect and blending stability.
R ^1b O—(R ^2b O) _l —H (b-1)
(Wherein, R ^1b is a hydrocarbon group having an aromatic group and having a total carbon number of 6 or more and 10 or less, l is an integer of 0 or more and 2 or less, and R ^2b is a carbon number of 2 or more and 4 or less. However, the molecular weight of the compound is 106 or more and 250 or less.)

The total carbon number of R ^1b is the number of carbon atoms including the aromatic group, and the total carbon number of R ^1b is 6 or more from the viewpoint of bactericidal effect, and 10 or less from the viewpoint of blending stability, preferably 9 or less, more preferably 8 or less. R ^1b is an aromatic hydrocarbon group such as a phenyl group, a benzyl group and a phenethyl group.
l in the general formula (b-1) is preferably 1 or less, more preferably 0, from the viewpoint of the bactericidal effect.

Specifically, as the component (b), benzyl alcohol (molecular weight: 108, LogP: 1.46), phenoxyethanol (molecular weight: 138, LogP: 1.39), 2 -Phenylethanol (molecular weight: 122, LogP: 1.74), 3-phenyl-1-propanol (molecular weight: 136, LogP: 2.16) and cinnamyl alcohol (molecular weight: 134, LogP: 1.98), benzyl selected from glycol (molecular weight: 152, LogP: 1.30), propylene glycol monophenyl ether (molecular weight: 152, LogP: 1.71), dipropylene glycol monophenyl ether (molecular weight: 210, LogP: 1.87) One or more types are mentioned. Component (b) is preferably one or more selected from benzyl alcohol and phenoxyethanol. Component (b) may be a combination of benzyl alcohol and phenoxyethanol. The hard surface disinfectant cleaning composition of the present invention preferably contains one or more selected from benzyl alcohol and phenoxyethanol as the component (b).

The (c) component of the present invention is a surfactant.
Component (c) includes surfactants selected from nonionic surfactants, anionic surfactants, cationic surfactants and amphoteric surfactants.
Component (c) may be selected from surfactants (excluding aromatic alcohols) having a LogP of 1.0 or higher.

Examples of nonionic surfactants include polyoxyalkylene alkyl ether having an alkyl group having 10 to 18 carbon atoms, polyoxyalkylene alkenyl ether having an alkenyl group having 10 to 18 carbon atoms, A polyoxyalkylene sorbitan fatty acid ester having a fatty acid group, an alkyl glycoside having an alkyl group having 8 to 18 carbon atoms, an alkyl polyglycoside having an alkyl group having 8 to 18 carbon atoms, and a fatty acid group having 8 to 18 carbon atoms sucrose fatty acid ester, alkyl polyglyceryl ether having an alkyl group having 8 to 18 carbon atoms, alkyl monoglyceryl ether having an alkyl group having 8 to 18 carbon atoms, and the like.
The nonionic surfactant is preferably an alkyl glyceryl ether having an alkyl group with 8 or more and 18 or less carbon atoms.

Examples of anionic surfactants include anionic surfactants having one or more hydrocarbon groups and one or more groups selected from the group consisting of sulfonic acid groups, sulfate ester groups and carboxylic acid groups. .
Examples of anionic surfactants include alkyl or alkenyl benzene sulfonic acids or salts thereof, polyoxyalkylene alkyl or alkenyl ether sulfates or salts thereof, alkyl or alkenyl sulfates or salts thereof and fatty acids or salts thereof. An anionic surfactant is preferably an alkyl sulfate ester or a salt thereof.
The oxyalkylene group of the polyoxyalkylene alkyl or alkenyl ether sulfate ester or salt thereof is preferably an oxyethylene group. Moreover, the average number of added moles of the oxyalkylene group of the polyoxyalkylene alkyl or alkenyl ether sulfate ester salt is preferably 1 or more and 10 or less. Examples of fatty acids or salts thereof include fatty acids having 10 to 18 carbon atoms or salts thereof.
The hydrocarbon group, alkyl group or alkenyl group of the anionic surfactant preferably has 10 or more and 18 or less carbon atoms. Further, the salt of the anionic surfactant is preferably an alkali metal salt such as sodium salt or potassium salt. The amount of the anionic surfactant is the amount based on the compound in which the counter ion is replaced with sodium ion.

Cationic surfactants include quaternary ammonium salt-type cationic surfactants. As the quaternary ammonium salt cationic surfactant, one or two of the groups bonded to the nitrogen atom are hydrocarbon groups having 8 or more and 16 or less carbon atoms, and the rest have 1 or more and 3 or less carbon atoms. A quaternary ammonium salt type cationic surfactant which is a group selected from the group consisting of an alkyl group, a hydroxyalkyl group having 1 to 3 carbon atoms, and an arylalkyl group (such as a benzyl group) can be mentioned. Among them, quaternary ammonium salt-type cationic surfactants having bactericidal properties are preferred, and quaternary ammonium salt-type cationic surfactants having a benzyl group are preferred from the viewpoint of bactericidal properties. The amount of cationic surfactant is the amount based on the compound in which the counter ion is replaced with chloride ion.

As the amphoteric surfactant, an amphoteric surfactant having an alkyl group having 8 or more and 22 or less carbon atoms is preferable from the viewpoint of lathering. Furthermore, in this amphoteric surfactant, the number of carbon atoms in the alkyl group is preferably 10 or more, more preferably 11 or more, and 18 or less, more preferably 13 or less. Amphoteric surfactants include one or more amphoteric surfactants selected from the group consisting of alkylbetaines, alkylamidobetaines, alkylsulfobetaines, alkylhydroxysulfobetaines, alkylamidohydroxysulfobetaines, alkylamino fatty acid salts, and alkylamine oxides. is preferable from the point of detergency and foaming. The amphoteric surfactant is preferably an amphoteric surfactant selected from the group consisting of alkyl (8 or more and 22 or less carbon atoms) amidopropyl betaine and alkyl (8 or more and 22 or less carbon atoms) hydroxysulfobetaine. Amphoteric surfactants selected from the group consisting of midopropyl)dimethylbetaine and lauryldimethylhydroxysulfobetaine are more preferred.

Component (c) is preferably one or more selected from nonionic surfactants, anionic surfactants and amphoteric surfactants from the viewpoint of detergency, foaming, bactericidal effect, and storage stability, and has 6 or more carbon atoms. At least one selected from alkyl monoglyceryl ether having an alkyl group of 18 or less, alkyl sulfuric acid ester salt having an alkyl group of 10 to 18 carbon atoms, and alkyl (8 to 22 carbon atoms) amidopropyl betaine is more preferable. The hard-surface sterilizing cleaning composition of the present invention preferably contains an alkyl monoglyceryl ether having an alkyl group having 6 or more and 18 or less carbon atoms as the component (c).

The hard surface sterilizing cleaning composition of the present invention contains component (a) in an amount of 1% by mass or more, preferably 1.2% by mass or more, more preferably 1.5% by mass or more, and less than 10% by mass, The content is preferably 5.0% by mass or less, more preferably 3.0% by mass or less.

The hard surface sterilizing cleaning composition of the present invention contains 1.5% by mass or more, preferably 2.0% by mass or more, more preferably 2.5% by mass or more, and 10% by mass of component (b). Below, preferably 5.0% by mass or less, more preferably 3.0% by mass or less.

In the hard surface disinfectant cleaning composition of the present invention, the total content of the component (a) and the content of the component (b) is preferably 2.5% by mass or more, more preferably 2.5% by mass or more, from the viewpoint of the bactericidal effect. , 3% by mass or more, more preferably 4% by mass or more, still more preferably 4.5% by mass or more, and from the viewpoint of blending stability, preferably 10% by mass or less, more preferably 8% by mass or less, More preferably, it is 6% by mass or less.

In the hard surface sterilizing cleaning composition of the present invention, the mass ratio (a)/(b) of the content of component (a) to the content of component (b) is 0.10 or more, preferably 0.10. 2 or more, more preferably 0.5 or more, and less than 1.0, preferably 0.9 or less, more preferably 0.8 or less, and even more preferably 0.7 or less.

The hard-surface sterilizing cleaning composition of the present invention preferably contains component (c) in an amount of preferably 1.0% by mass or more, more preferably 3.0% by mass or more, and preferably 10% by mass or less, more preferably It contains 8.0% by mass or less.

In the hard surface sterilizing cleaning composition of the present invention, the mass ratio (b)/(c) of the content of component (b) to the content of component (c) is preferably 0.1 or more, more preferably is 0.2 or more, more preferably 0.3 or more, and preferably 2.0 or less, more preferably 1.5 or less, still more preferably 1.0 or less.

The hard surface sterilizing cleaning composition of the present invention has a mass ratio [(a) + (b )]/(c) is preferably 0.7 or more, more preferably 0.8 or more, still more preferably 0.85 or more from the viewpoint of bactericidal effect, and preferably 3 from the viewpoint of blending stability. below, more preferably 1.5 or less, still more preferably 1 or less.

The hard surface disinfectant cleaning composition of the present invention contains water. It may be a liquid composition containing water. Water is used in an amount such that the total amount of the composition is 100% by weight.

The hard-surface sterilizing cleaning composition of the present invention may contain a solvent (hereinafter referred to as other solvent) other than the components (a) and (b). That is, the hard surface disinfectant cleaning composition of the present invention can contain a solvent selected from a solvent having a LogP of 1.0 or more and an aromatic alcohol having a LogP of less than 1.3. Other solvents include, for example, 1-hexanol (molecular weight: 102, LogP: 1.80), 1-pentanol (molecular weight: 88, LogP: 1.39), phenyldiglycol (molecular weight: 182, LogP: 1.80). 23), benzyldiglycol (molecular weight: 196, LogP: 1.15). The content of other solvents in the composition is preferably 100% by mass or less with respect to the total content of components (a) and (b).

The hard surface disinfectant cleaning composition of the present invention has a pH at 25° C. of 8 or higher, preferably 9 or higher, more preferably 10 or higher, and 12 or lower, preferably 11 or lower.
The hard-surface sterilizing cleaning composition of the present invention is appropriately adjusted by blending a pH adjuster so that the pH at 25°C falls within a predetermined range. Examples of pH adjusters include alkali metal hydroxides and alkali metal silicates. Alkali metal hydroxides include sodium hydroxide and potassium hydroxide, and alkali metal silicates include sodium silicate and potassium silicate, specifically sodium metasilicate, sodium orthosilicate, and No. 1 silicate. sodium, No. 2 sodium silicate, No. 3 sodium silicate, No. 4 sodium silicate, 1K potassium silicate, and 2K potassium silicate.

The composition of the present invention can contain an alkanolamine as component (d). The component (d) helps the protein swell in the lipid/protein complex stains, permeates the protein and enhances the detergency, thereby preventing the inhibition of the sterilization effect by the complex stains and exerting the original sterilization power. From the viewpoint of enhancing the detergency of protein and promoting bactericidal activity, low-molecular-weight alkanolamines are preferred, and alkanolamines having a molecular weight of 60 or more and 300 or less, preferably 200 or less, and more preferably 150 or less are suitable.

Component (d) is not particularly limited, but includes alkyl mono- or dialkanolamines having 2 or 3 carbon atoms in the alkanol group or alkylene oxide adducts thereof (wherein the alkylene oxide has 2 or 3 carbon atoms). Specific examples include one selected from monoethanolamine, diethanolamine, triethanolamine, 1-amino-2-propanol, N-methylmonoethanolamine, N-methyldiethanolamine and N,N-dimethylmonoethanolamine. The above compounds are mentioned, and from the viewpoint of cleaning performance of lipid/protein complex stains, preferably one or more selected from monoethanolamine, diethanolamine, 1-amino-2-propanol and N-methylmonoethanolamine, and more One or more selected from monoethanolamine, diethanolamine and 1-amino-2-propanol are preferred.

The composition of the present invention preferably contains component (d) in an amount of 0.1% by mass or more, more preferably 0.2% by mass or more, still more preferably 0.3% by mass or more, and preferably 1% by mass or less. , more preferably 0.8% by mass or less, and still more preferably 0.6% by mass or less.

The composition of the present invention may contain a sequestering agent [hereinafter referred to as component (e)]. It is not particularly limited as long as it has the ability to chelate and sequester metal ions, and specific examples thereof include one or more sequestering agents selected from the following (e1) to (e3).
(e1) Amino acids such as aspartic acid, glutamic acid, glycine and their alkali metal salts or alkanolamine salts (e2) Nitrilotriacetic acid, iminodiacetic acid, ethylenediaminetetraacetic acid (EDTA), hydroxyethylethylenediaminetriacetic acid, diethylenetriaminepentaacetic acid, glycol Aminocarboxylic acids such as etherdiaminetetraacetic acid, hydroxyethyliminodiacetic acid, triethylenetetraminehexaacetic acid, diencolic acid and their alkali metal salts or alkanolamine salts (e3) diglycolic acid, oxydisuccinic acid, carboxymethyloxysuccinic acid, citric acid Organic acids such as acid, lactic acid, tartaric acid, oxalic acid, malic acid, oxydisuccinic acid, gluconic acid, carboxymethylsuccinic acid, carboxymethyltartaric acid, and their alkali metal salts or alkanolamine salts

Among these, hydroxycarboxylic acids such as citric acid and malic acid, aminocarboxylic acids such as ethylenediaminetetraacetic acid and hydroxyethylethylenediaminetriacetic acid, and salts thereof are preferred. Among them, one or more selected from citric acid, ethylenediaminetetraacetic acid and salts thereof is preferable. Preferred salt forms include sodium salts, potassium salts, ammonium salts and alkanolamine salts.

The composition of the present invention contains component (e) preferably at 0.5% by mass or more, more preferably 1% by mass or more, still more preferably 2% by mass or more, and preferably 5% by mass or less, more preferably The content is 4% by mass or less, more preferably 3% by mass or less.

In order to increase the added value of the product, the disinfectant detergent composition for hard surfaces of the present invention contains fragrances, pigments, preservatives, antioxidants, stabilizers, hydrotope agents, enzymes, bleaching agents, Surface modifiers, thickeners and the like may optionally be blended (with the exception of the above components (a) to (e)).

Hydrotope agents that can be used in the hard surface disinfectant cleaning composition of the present invention include cumenesulfonic acid, p-toluenesulfonic acid, m-xylenesulfonic acid, naphthalenesulfonic acid, 7-methyl-1-naphthalenesulfonic acid, One or more selected from 8-methyl-2-naphthalenesulfonic acid, 5-methyl-2-naphthalenesulfonic acid, and salts thereof can be blended. Preferably, one or more selected from cumenesulfonic acid, p-toluenesulfonic acid, m-xylenesulfonic acid, naphthalenesulfonic acid, and salts thereof, more preferably cumenesulfonic acid, p-toluenesulfonic acid, m - Xylene sulfonic acid and one or more selected from salts thereof. Preferred salt forms include sodium salts, potassium salts, ammonium salts and alkanolamine salts. The hard surface sterilizing cleaning composition of the present invention preferably contains 0.01% by mass or more, more preferably 0.1% by mass or more, still more preferably 1% by mass or more, and further preferably 2% by mass or more of the hydrotope agent. , and preferably 10% by mass or less, more preferably 5% by mass or less, and even more preferably 3% by mass or less.

Bacteria targeted in the present invention are both Gram-positive and Gram-negative. Examples of Gram-positive bacteria include Staphylococcus aureus, and examples of Gram-negative bacteria include Escherichia coli and pink stains in bathrooms. Constituent bacteria such as Methylobacterium are included.

The sterilizing cleaning agent composition for hard surfaces of the present invention is suitable for cleaning hard surfaces such as bathrooms, bathtubs, washbasins, tiles, restrooms, washbasins, mirrors, sinks around kitchens, countertops, and around taps. be done. Suitable for use in bathrooms. Here, "for bathrooms" refers not only to bathrooms, but also to articles having hard surfaces in bathrooms, such as bathtubs and basins.

It is preferable to spray or apply the hard-surface sterilizing cleaning composition of the present invention and bring it into contact with a hard surface to which sebum stains, soap scum stains, and the like are attached. A spray means can be used for spraying or coating. According to the present invention, there is provided a disinfectant detergent article for hard surfaces in a spray container, which is obtained by filling a container equipped with a sprayer with the disinfectant detergent composition for hard surfaces of the present invention.

The container equipped with the sprayer filled with the composition of the present invention in the disinfectant cleaning agent article for hard surfaces in the spray container of the present invention is a manual spray device that does not use a propellant, such as a trigger-type spray container and a pump-type spray container. , aerosol using a propellant, and the like. The container equipped with the sprayer is preferably a trigger-type spray capable of spraying or applying the content in the form of droplets or bubbles.

When a trigger type spray equipped with a mechanism for spraying the composition of the present invention in the form of droplets is used in the sterilizing cleaning agent article for hard surfaces contained in the spray container of the present invention, the injection nozzle of the spray container containing the composition is used. The caliber is preferably 0.1 mm or more, more preferably 0.3 mm or more, in order to facilitate spraying, to prevent the jetted droplets from being coarse, to prevent the spray from being linear, and to prevent the sprayable area from being extremely narrowed. , and preferably in the range of 2 mm or less, more preferably 1 mm or less.
When using a trigger-type spray equipped with a mechanism for atomizing droplets, the hard-surface sterilizing cleaning agent article in a spray container of the present invention is preferably 0.1 mL or more, more preferably 0.1 mL or more, more preferably 0.1 mL or more per operation. No less than 3 mL and preferably no more than 5 mL and more preferably no more than 2 mL of composition is sprayed.

Further, a trigger-type sprayer having a foam forming mechanism can be used in the disinfectant cleaning agent article for hard surfaces contained in a spray container of the present invention. A trigger type sprayer having a foam forming mechanism is preferably a direct pressure type or an accumulator type, more preferably an accumulator type. When a trigger-type spray equipped with a bubble forming mechanism is used, it is preferable to have a spin element and a liquid passage plate having several rod-like projections in a circular space portion with a diameter of 4 to 8 mm. Here, the spin element is a mechanism that imparts a spin to the flow of the liquid through the spin element and finally ejects from the nozzle. FIG. 4(b) of JP-A-2002-68265 can be referred to.

When using a trigger-type spray with a foam-forming mechanism, the spray-packaged hard surface disinfectant cleaner article of the present invention preferably contains at least 0.5 mL, more preferably at least 1 mL, and preferably at least 1 mL in a single operation. sprays 30 mL or less, more preferably 15 mL or less, and even more preferably 5 mL or less of the composition.

The liquid passage plate, which is another member of the bubble forming mechanism, preferably has 3 to 8 rod-like projections installed in a circular space having a diameter of 5 to 7 mm. In this case, rectangular rod-like projections having a width of 0.8 to 1.2 mm and a length of 2 to 4 mm are suitable. In addition, the area occupied by the rod-shaped projections with respect to the space portion excluding the rod-shaped projections is preferably 30 area% or more, more preferably 40 area% or more, and preferably 90 area% or less, more preferably 80 area% or less. More preferably, it is 70 area % or less. By installing such a liquid passage plate, the adhesion and retention of bubbles on the vertical surface is improved.

A commonly used container can be used as the container for the disinfectant cleaning agent article for hard surfaces in a spray container of the present invention. For example, it is obtained using polyethylene, polypropylene, or polyethylene terephthalate as a raw material, and can be manufactured by blow molding or the like. The wall thickness of the container may differ between the bottom and the side, preferably 0.01 to 2 mm, and the volume of the container is preferably 100 to 1000 mL. The amount of the hard surface sterilizing cleaning composition to be filled in the container is desirably 200 to 500 mL in terms of handling. Also, liquid filling is performed leaving a common-sense void.

[Method for sterilizing and cleaning hard surfaces]
The method for cleaning a hard surface of the present invention is a method for sterilizing a hard surface by applying the sterilizing cleaning agent composition for a hard surface of the present invention to the hard surface and then rinsing the hard surface without rubbing. In the cleaning method of the present invention, sterilization may be performed along with cleaning of the hard surface.
That is, the hard-surface sterilizing cleaning composition of the present invention is used in the method for sterilizing and cleaning a hard surface of the present invention. Preferred aspects of the composition are the same as those of the hard-surface sterilizing cleaning composition of the present invention described above.
In the method for sterilizing and cleaning a hard surface of the present invention, the hard surface sterilizing cleaning agent composition of the present invention is applied to a hard surface, for example, a hard surface to which sebum stains and/or soap scum stains are adhered, and then rubbed. It can be suitably implemented as a sterilizing cleaning method for hard surfaces by rinsing without washing. Various microorganisms such as bacteria generally exist on hard surfaces in the living environment. Therefore, the hard surface targeted by the present invention may be a hard surface on which microorganisms such as bacteria are present, or a hard surface on which sebum stains and/or soap scum stains are adhered and microorganisms such as bacteria are present.

In the method for sterilizing and cleaning a hard surface of the present invention, the sterilizing and cleaning agent composition for a hard surface is adhered to the hard surface, preferably in the form of foam. In the present invention, it is preferable that the hard-surface sterilizing cleaning composition is foamed with a trigger-type sprayer having a foam-forming mechanism. The trigger type sprayer is preferably a pressure accumulation type sprayer. As the trigger-type sprayer having a foam-forming mechanism, those described in the disinfectant cleaning composition for hard surfaces of the present invention can be used.

More specifically, the method of the present invention for sterilizing and cleaning a hard surface includes applying the sterilizing cleaning agent composition for hard surfaces to a hard surface in the undiluted state, or applying the sterilizing cleaning agent composition for hard surfaces to There is a sterilizing cleaning method in which a stock solution is applied to a hard surface without dilution, that is, the sterilizing cleaning agent composition for a hard surface is attached to a hard surface without being diluted. Furthermore, a sterilizing cleaning method is mentioned in which the hard surface sterilizing cleaning composition is adhered to a hard surface without being diluted.
Adhering to the hard surface without diluting the sterilizing cleaning composition for hard surfaces means that the cleaning composition is intentionally diluted with water or the like and then not allowed to adhere to the hard surface. For example, when water droplets or the like adhere to a hard surface, or when water droplets adhere to the hard surface after the hard surface sterilizing cleaning composition is applied to the hard surface, the hard surface sterilizing cleaning It can be understood that the agent composition adheres to the hard surface without dilution.
In the present invention, it is preferred that the undiluted solution of the sterilizing cleaning composition for hard surfaces is adhered to the hard surface as it is, that is, without changing the composition. For example, the sterilizing cleaning agent composition for hard surfaces is applied to a hard surface to which dirt has adhered, without being applied to a wet sponge. Once applied to the hard surface, the composition of the hard surface disinfectant cleaner composition may vary. That is, after adhering to the hard surface, the composition of the hard surface disinfectant cleaning composition may be diluted or concentrated.

However, a concentrated composition containing the components (a), (b), and (c) of the present invention is prepared, and the concentrated composition is diluted with water to obtain the hard surface sterilizing cleaning composition of the present invention. Articles may be prepared and adhered to hard surfaces. That is, a concentrated composition containing the components (a), (b) and (c) of the present invention is diluted with water to prepare the hard surface sterilizing cleaning composition of the present invention. A method of sterilizing a hard surface may also include rinsing the hard surface without scrubbing after applying the sterilizing detergent composition to the hard surface.

Further, in the method for sterilizing and cleaning a hard surface of the present invention, the sterilizing cleaning composition for a hard surface is rinsed without being rubbed after being adhered to the hard surface, preferably after being adhered to the hard surface, There is a sterilization cleaning method of rinsing without rubbing after leaving for a predetermined time. That is, there is a sterilization cleaning method in which the adhesive is adhered without scrubbing with a flexible material such as a sponge or fingers, and left as it is without applying an external force. After the composition has been applied, the hard surface is rinsed with water, if necessary, after being left for a predetermined period of time. When rinsing, an external force (physical force) may be applied by a hand or the like, or simply rinsing with a stream of water.

In the hard surface sterilization cleaning method of the present invention, the hard surface sterilization cleaning composition is preferably 1 g or more, more preferably 3 g or more, and still more preferably 1 g or more per 100 cm ² of the hard surface area of the object. 5 g or more, preferably 15 g or less, more preferably 12 g or less, still more preferably 10 g or less, is preferably applied, furthermore, applied or sprayed.

In the method for sterilizing and cleaning a hard surface of the present invention, from the viewpoint of enhancing detergency, after the hard surface sterilizing cleaning agent composition is adhered to the hard surface, it is preferably 10 seconds or longer, more preferably 20 seconds or longer, and still more preferably 30 seconds or longer. Seconds or more, more preferably 40 seconds or more, and from the same viewpoint, preferably 60 minutes or less, more preferably 30 minutes or less, even more preferably 20 minutes or less, and even more preferably 10 minutes or less. In this case, leaving may begin when the composition first adheres to the hard surface. The predetermined time may be a time within this range.
Note that the temperature at the time of leaving may be room temperature, for example, 10° C. or more and 30° C. or less.

Further, in the method for sterilizing and cleaning a hard surface of the present invention, from the viewpoint of enhancing detergency, preferably 10 seconds or longer, more preferably 20 seconds or longer, even more preferably 30 seconds or longer, and even more preferably 40 seconds or longer, and From the same point of view, the liquid detergent composition is allowed to adhere to the hard surface to be cleaned for preferably 60 minutes or less, more preferably 30 minutes or less, even more preferably 20 minutes or less, and even more preferably 10 minutes or less. .

In the method for sterilizing and cleaning a hard surface of the present invention, the hard surface sterilizing cleaning composition may be adhered by immersing the soiled hard surface in the composition. From the viewpoint of enhancement, a method of spraying or coating to adhere to a soiled hard surface is preferred. In the present invention, it is preferable that the hard-surface sterilizing cleaning composition is adhered to the hard surface in liquid or foam form.
The method of applying the hard surface sterilizing cleaning composition to the soiled hard surface is preferably spraying or coating, and preferably a method of spraying in the form of droplets or coating in the form of foam. It is preferable to use the disinfectant cleaner article for hard surfaces in a spray container of the present invention described above.

The method for sterilizing and cleaning hard surfaces of the present invention is preferred as a method for sterilizing and cleaning bathrooms, kitchens or toilets, and further as a method for sterilizing and cleaning bathrooms.

In the method for sterilizing and cleaning a hard surface of the present invention, the sterilizing cleaning agent composition for hard surfaces of the present invention is applied directly to the hard surface. Further, since it is sufficient to leave the surface with the composition adhered thereto, it is not necessary to apply an external force such as scrubbing with a flexible material such as a sponge during washing.
Furthermore, in the method for sterilizing a hard surface of the present invention, the sterilizing cleaning agent composition for a hard surface of the present invention, preferably the foamy composition, is applied to the hard surface and left as it is. The composition can be retained for a long time.
In the method for sterilizing and cleaning a hard surface of the present invention, the hard surface to which the sterilizing cleaning composition for hard surfaces is adhered is rinsed with water, preferably the hard surface to which the sterilizing cleaning composition for hard surfaces is adhered. , After leaving for a predetermined time, rinse with water. Since the sterilizing cleaning agent composition for hard surfaces of the present invention has good rinsability, rinsing can be completed with a small amount of water.

A hard surface disinfecting detergent composition was prepared by blending the components shown in Tables 1 to 3.
The pH (25°C) of each composition was adjusted with sodium hydroxide. These compositions were evaluated for bactericidal activity and appearance (composition stability) by the following methods. The results are shown in Tables 1-3. In the table, all of the hard-surface sterilizing detergent compositions of Examples had good detergency against sebum stains and soap scum stains. Further, the sterilizing cleaning agent composition for hard surfaces of the Examples can be used, for example, in a method for sterilizing and cleaning a hard surface by forming foam into a foam state using a trigger type sprayer having a foam forming mechanism and adhering it to the hard surface. .

<Bactericidal evaluation method>
Staphylococcus aureus (strain NBRC12732) was cultured twice on a nutrient agar medium (manufactured by Difco, Nutrient Agar reagent prepared according to the manufacturer's instructions) at 37°C for 24 hours. ~ 5 mm) about 0.5 g of 1/2 nutrient liquid medium (manufactured by Difco, Nutrient Broth reagent prepared at 1/2 concentration in the package insert) 3 mL, suspended and dispersed, 1/2 nut The bacterial concentration was adjusted to about 10 ⁹ cfu/mL using a trient liquid medium, and the test bacteria were mixed with 3% BSA (manufactured by Sigma Aldrich)/distilled water after filtration sterilization at a weight ratio of 1:1. liquid.
10 μL of the test bacteria solution was mixed with 1 mL of the sterilizing cleaning composition for hard surfaces (hereinafter also referred to as the test solution) in the table, and after contacting at 25 ° C. for 5 minutes, 100 μL was taken and 900 μL was added. The test solution was inactivated by suspending it in LP diluent (manufactured by Nissui Pharmaceutical Co., Ltd., prepared according to the package insert). After further diluting this with LP diluent, 100 μL of each diluted solution was added to a nutrient agar medium, cultured at 37° C. for 48 hours, and the number of surviving bacteria was calculated from the number of colonies obtained.
In addition, the same operation was performed using 0.05% Tween80/distilled water instead of the test solution (10 μL of the bacterial solution was mixed with 1 mL of the test solution, contacted for 5 minutes, and then mixed with the LP diluted solution). As a control operation, the logarithmic difference between the number of surviving bacteria after the control operation and the number of surviving bacteria after contact with the test solution was calculated as a bactericidal activity value and used as an index of bactericidal performance. Based on the calculated bactericidal activity value, the bactericidal activity was evaluated according to the following criteria. A score of "○" or higher in the following criteria was regarded as a pass.
○: Bactericidal activity value against Staphylococcus aureus is 2.0 or more ×: Bactericidal activity value against Staphylococcus aureus is less than 2.0

<Appearance evaluation method>
The hard surface disinfecting detergent compositions of Examples and Comparative Examples shown in Tables 1 to 3 were prepared, the appearance of the compositions immediately after preparation was visually observed, and the appearance was evaluated according to the following criteria. A score of "○" or higher in the following criteria was regarded as a pass.
〇: Colorless and transparent ×: Separation and turbidity are observed

The ingredients in the table are as follows. The appropriate amount of NaOH is the amount for adjusting the pH of the composition to the value shown in the table.
For LogP of each compound, LogP calculated using PerkinElmer ChemDraw 19.1 is used.
<Ingredients>
(a) Component: Solvent butyl diglycol with LogP of less than 1.0, LogP: 0.66
· 3-methoxy-3-methylbutanol, Log P: 0.21

(a′) component (comparative component for component (a)): Non-aromatic solvent 1-hexanol with LogP of 1.0 or more, LogP: 1.8
· 1-pentanol, Log P: 1.39

(b) Component: Aromatic alcohol/benzyl alcohol with a LogP of 1.3 or more, LogP: 1.46
- Phenoxyethanol, Log P: 1.39

Component (b′) (comparative component for component (b)): aromatic alcohol phenyldiglycol with a LogP of less than 1.3, LogP: 1.23
Benzyldiglycol, Log P: 1.15

(c) Component: Surfactant Amphoteric surfactant: Amphithol 20AB, lauramidopropyl betaine, Kao Corporation Anionic surfactant: Emal 2F-HP, sodium lauryl sulfate, Kao Corporation Nonionic surfactant Agent: Penetol GE-EH, 2-ethylhexyl glyceryl ether, Kao Corporation

Claims (11)

(a) a solvent having a Log P of less than 1.0 [hereinafter referred to as component (a)] 1% by mass or more and less than 10% by mass; (b) an aromatic alcohol having a Log P of 1.3 or more [hereinafter referred to as component (b)] 1 .5% by mass or more and 10% by mass or less, (c) a surfactant [hereinafter referred to as component (c)] and water, and the mass ratio of the content of component (a) to the content of component (b) A sterilizing cleaning composition for hard surfaces, wherein (a)/(b) is 0.10 or more and less than 1.0, and the pH at 25°C is 8 or more and 12 or less. 2. The sterilizing cleaning composition for hard surfaces according to claim 1, which contains a glycol ether solvent as component (a). 3. The hard-surface sterilizing and cleaning composition according to claim 1, which contains a compound represented by the following general formula (b-1) as the component (b).
R ^1b O—(R ^2b O) _l —H (b-1)
(Wherein, R ^1b is a hydrocarbon group having an aromatic group and having a total carbon number of 6 or more and 10 or less, l is an integer of 0 or more and 2 or less, and R ^2b is a carbon number of 2 or more and 4 or less. However, the molecular weight of the compound is 106 or more and 250 or less.) 4. The hard surface disinfectant cleaning composition according to any one of claims 1 to 3, comprising at least one selected from benzyl alcohol and phenoxyethanol as component (b). 5. The hard surface disinfectant cleaning composition according to any one of claims 1 to 4, which contains an alkyl glyceryl ether having an alkyl group having 8 to 18 carbon atoms as component (c). 6. The hard surface disinfectant cleaning composition according to any one of claims 1 to 5, further comprising (d) an alkanolamine. The hard-surface sterilizing detergent composition according to any one of claims 1 to 6, which is a bathroom sterilizing detergent composition. A method for sterilizing a hard surface, comprising applying the sterilizing cleaning agent composition for a hard surface according to any one of claims 1 to 7 to the hard surface and then rinsing the surface without rubbing. 9. The method for sterilizing and cleaning a hard surface according to claim 8, wherein the sterilizing and cleaning agent composition for hard surfaces is adhered to the hard surface in the form of foam. 10. The method for sterilizing and cleaning a hard surface according to claim 9, wherein the sterilizing and cleaning agent composition for hard surfaces is foamed with a trigger sprayer having a foam forming mechanism. 11. The method of disinfecting and cleaning hard surfaces according to claim 10, wherein the trigger sprayer is an accumulator sprayer.