JP6707276B2 - Liquid detergent composition for hard surfaces - Google Patents

Description

The present invention relates to a liquid detergent composition for hard surfaces and a method for cleaning hard surfaces.

Cleaning agents for hard surfaces such as bathroom cleaning agents are required to have rich lathering and long-lasting lather during cleaning. The foaming property and the foam sustainability are very important physical properties that correlate with the cleaning property, and are factors that greatly affect the cleaning of an object having many vertical surfaces such as a bathroom. Various surfactants are generally used to develop this foaming.
Patent Document 1 discloses a neutral or basic hard surface cleaner composition containing an amidobetaine type amphoteric surfactant, a nonionic surfactant, a water-soluble solvent, and water. It is described that it is excellent in strength and foaming power and is suitable as a cleaning agent for homes, bathrooms, kitchens, tableware and the like.
Further, Patent Document 2 contains a sulfosuccinic acid alkyl ester or a salt thereof, a specific anionic surfactant, and a specific polypropylene glycol, and shows rich foaming during cleaning and foam sustainability during cleaning, There is described a dishwashing composition for hand-washing, in which foam disappears instantly during rinsing and rinsing is completed with a small amount of water.

Japanese Patent Laid-Open No. 7-3288 JP, 2013-82847, A

On the other hand, after cleaning the hard surface, the work of removing bubbles is generally performed by rinsing with running water. In the bathroom cleaning, a rinsing method using a shower is often used, but since the work is usually performed until the bubbles disappear, a lot of water is used and it takes a long working time.
It is desirable to reduce the rinse water after cleaning as much as possible from the viewpoints of environmental load reduction, effective use of water resources, and from the viewpoint of work load reduction. However, generally, a cleaning agent having excellent foamability and foam durability requires a large amount of water to complete the rinsing. Therefore, there is a strong demand for a cleaning agent which exhibits a rich foaming property and a long-lasting foaming property at the time of cleaning, but immediately disappears at the time of rinsing and the rinse is completed with a small amount of water.
In this regard, in Patent Document 1 and Patent Document 2, further improvement is desired particularly with respect to defoaming for a cleaning agent such as a bath cleaning agent that requires a large amount of water for rinsing.
The present invention provides a liquid detergent composition for hard surfaces, which exhibits rich lathering and longevity of lather at the time of washing, but disappears instantly at the time of rinsing, and completes rinsing with a small amount of water.

The present invention provides (a) a nonionic surfactant obtained by adding ethylene oxide to a secondary alcohol having 8 or more and 18 or less carbon atoms and having an average of 1 mol or more and less than 6 mol [hereinafter, referred to as (a) component],
(B) One or more surfactants selected from anionic surfactants, cationic surfactants, amphoteric surfactants, and nonionic surfactants other than component (a) [hereinafter referred to as component (b). ], and
Contains water,
The total content of the components (a) and (b) is 3% by mass or more and 10% by mass or less,
The mass ratio of [content of component (a)]/[total content of components (a) and (b)] is 0.05 or more and 0.50 or less,
Liquid detergent composition for hard surfaces.

The present invention also relates to a liquid detergent product for hard surface, which is obtained by filling a spray-type container with the liquid detergent composition for hard surface of the present invention.

The present invention also relates to a method for cleaning a hard surface, which comprises a step of rinsing with water after the step of applying the above-described liquid detergent composition for hard surface of the present invention to a hard surface on which dirt is attached.

According to the present invention, a hard surface having a rich foaming property and a long-lasting property of foaming during cleaning, but immediately disappears during rinsing, rinsing is completed with a small amount of water, excellent cleaning power, and good compounding stability. A liquid detergent composition for use is provided.
The cleaning with the liquid detergent composition for hard surfaces of the present invention makes it possible to reduce rinsing water, which is effective from the viewpoints of environmental load reduction and effective use of water resources, and from the viewpoint of work load reduction. It is effective because it can shorten the time. Moreover, it has an excellent cleaning power for sebum stains attached to the hard surface and also has good compounding stability.

Further, the liquid cleaning composition for hard surfaces of the present invention exhibits excellent detergency even without the use of a strong oxidizing agent or alkaline agent such as hypochlorite, so that metal around water can be easily It can be used for parts and tiles.

Schematic diagram showing the evaluation method of foam disappearance performed in the examples Schematic diagram showing the perforated state of the means for introducing hard water (watering can) used in the evaluation of the foam disappearance property of the examples.

<Component (a)>
The component (a) is a nonionic surfactant obtained by adding ethylene oxide on average to 1 mol or more and less than 6 mol to a secondary alcohol having 8 or more and 18 or less carbon atoms.
The carbon number of the secondary alcohol is preferably 9 or more, more preferably 10 or more, further preferably 11 or more, and preferably 17 or less, more preferably 16 or less, further 15 or less, still more preferably 14 or less. The secondary alcohol is preferably a secondary alcohol having an alkyl group having 8 or more and 18 or less carbon atoms. The carbon number of the alkyl group is preferably in the same range as the carbon number of the secondary alcohol described above.
The number of moles of ethylene oxide added is preferably 1.5 moles or more on average, more preferably 2 moles or more, further preferably 3 moles or more, and more preferably 5.8 moles or less, more preferably 5.5 or less. It is more preferably not more than mol.

Component (b) is at least one surfactant selected from anionic surfactants, cationic surfactants, amphoteric surfactants, and nonionic surfactants other than component (a).

Examples of the anionic surfactant 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 the anionic surfactant include alkyl or alkenyl benzene sulfonic acid or its salt, polyoxyalkylene alkyl or alkenyl ether sulfuric acid ester or its salt, alkyl or alkenyl sulfuric acid ester or its salt, and fatty acid or its salt. From the viewpoints of detergency, foaming property and rinsing property, the anionic surfactant is preferably one or more selected from the group consisting of polyoxyalkylene alkyl or alkenyl ether sulfates or salts thereof and fatty acids or salts thereof. .. The oxyalkylene group of the polyoxyalkylene alkyl or alkenyl ether sulfate or its salt is preferably an oxyethylene group. The average number of moles of oxyalkylene groups added to the polyoxyalkylene alkyl or alkenyl ether sulfate ester salt is preferably 1 or more and 10 or less. Examples of the fatty acids or salts thereof include fatty acids having 10 or more and 18 or less carbon atoms or salts thereof. The alkyl group or alkenyl group of the anionic surfactant preferably has 10 or more and 18 or less carbon atoms. The salt is preferably an alkali metal salt such as sodium salt or potassium salt.

Examples of the cationic surfactant include quaternary ammonium salt type cationic surfactants. As the quaternary ammonium salt type cationic surfactant, one or two of the groups bonded to the nitrogen atom are hydrocarbon groups having 6 or more and 18 or less carbon atoms, and the rest are 1 or more and 3 carbon atoms. Examples thereof include quaternary ammonium salt type cationic surfactants which are groups selected from the group consisting of the following alkyl groups, hydroxyalkyl groups having 1 to 3 carbon atoms and 3 or less, and arylalkyl groups (benzyl group and the like). Among them, a quaternary ammonium salt type cationic surfactant having bactericidal performance is preferable, and a benzyl group-containing quaternary ammonium salt type cationic surfactant is preferable from the viewpoint of bactericidal performance.

As the cationic surfactant, a quaternary ammonium salt type cationic surfactant represented by the following general formula (1) is preferable.

[In the formula, R ¹ represents a hydrocarbon group having 6 to 18 carbon atoms. R ² and R ³ each independently represent an alkyl group having 1 to 3 carbon atoms. R ⁴ represents an alkylene group having 1 to 3 carbon atoms. Z ⁻ represents an anionic group. ]

The quaternary ammonium salt type cationic surfactant represented by the general formula (1) is a hydrocarbon having 6 or more and 18 or less carbon atoms in the general formula (1) from the viewpoint of improving detergency and foaming. It is a base. R ¹ preferably has 8 or more carbon atoms and 14 or less carbon atoms, more preferably 10 or less carbon atoms. Further, R ¹ is preferably an alkyl group.
In addition, from the viewpoint of improving detergency and low irritation, in the general formula (1), R ² and R ³ are each independently an alkyl group having 1 to 3 carbon atoms, and 1 to 2 carbon atoms. Is preferably an alkyl group, and more preferably a methyl group.
In addition, from the viewpoint of improving detergency and low irritation, in the general formula (1), R ⁴ is an alkylene group having 1 to 3 carbon atoms, preferably an alkylene group having 1 to 2 carbon atoms, and methylene. Groups are more preferred.
Further, as Z ⁻ in the general formula (1), halogen ions such as chloride ions are preferable from the viewpoint of improving the detergency. As Z ⁻ , a chloride ion (Cl ⁻ ) is more preferable.

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 improving detergency and foaming. Furthermore, in this amphoteric surfactant, the carbon number of the alkyl group is preferably 10 or more, more preferably 11 or more, and 18 or less, further 13 or less.
As the amphoteric surfactant, use one or more amphoteric surfactants selected from the group consisting of alkyl betaine, alkylamidobetaine, alkylsulfobetaine, alkylhydroxysulfobetaine, alkylamidohydroxysulfobetaine, and alkylamino fatty acid salt. Is preferable from the viewpoints of detergency and foaming. Among them, amphoteric surfactants selected from the group consisting of alkyl (C8 or more and 22 or less) amidopropyl betaine and alkyl (C8 or more and 22 or less) hydroxysulfobetaine are preferable, and further (3-lauramidopropyl) ) More preferred is an amphoteric surfactant selected from the group consisting of dimethyl betaine and lauryl dimethyl hydroxysulfobetaine. Further, two or more of the amphoteric surfactants listed here may be mixed and used. As the amphoteric surfactant, one or more amphoteric surfactants selected from betaine-type amphoteric surfactants having an alkyl group having 8 or more, 10 or more, 11 or more, and 22 or less, 18 or less, and 13 or less carbon atoms. Agents are preferred.

As the nonionic surfactant other than the component (a), a polyoxyalkylene alkyl ether having an alkyl group having 10 to 18 carbon atoms, a polyoxyalkylene alkenyl ether having an alkenyl group having 10 to 18 carbon atoms, Polyoxyalkylene sorbitan fatty acid ester having a fatty acid group having 10 to 18 carbon atoms Sucrose fatty acid ester having a fatty acid group having 8 to 18 carbon atoms, alkyl polyglyceryl ether having an alkyl group having 8 to 18 carbon atoms Etc.

However, the blending amount of the alkyl glycoside and the alkyl polyglycoside having an alkyl group having 8 or more and 18 or less carbon atoms and a sugar condensation degree of 1 or more and 3 or less is limited from the viewpoint of foam control during rinsing. The content of the alkyl glycoside is preferably 0.5% by mass or less, more preferably 0.3% by mass or less, further preferably 0.1% by mass or less in the composition.

<Composition, optional components, etc.>
The liquid detergent composition for hard surfaces of the present invention has a total content of the components (a) and (b) of 3% by mass or more and 10% by mass or less from the viewpoint of cleaning performance and foam control. From the viewpoint of cleaning performance, the total content of the components (a) and (b) is preferably 4% by mass or more, more preferably 5% by mass or more, further preferably 6% by mass or more, and From the viewpoint of defoaming property, it is preferably 9% by mass or less, more preferably 8% by mass or less, still more preferably 7% by mass or less, still more preferably 6.5% by mass or less.

The liquid detergent composition for hard surfaces of the present invention has a mass of [content of component (a)]/[total content of components (a) and (b)] from the viewpoint of cleaning performance and foam control. The ratio is 0.05 or more and 0.50 or less. The mass ratio of [content of (a) component]/[total content of (a) component and (b) component] is preferably 0.08 or more, more preferably 0. It is 1 or more, more preferably 0.15 or more, and from the viewpoint of cleaning performance, it is preferably 0.45 or less, more preferably 0.35 or less, still more preferably 0.25 or less.

The liquid detergent composition for hard surfaces of the present invention has a mass ratio of [content of (a) component]/[content of nonionic surfactant] of 0.35 or more from the viewpoint of cleaning performance and foam control. Is preferred. The mass ratio of [content of component (a)]/[content of nonionic surfactant] is preferably 0.7 or more, more preferably 0.8 or more, still more preferably 0.9 or more, and Most preferred is 1. The content of the nonionic surfactant is the total content of the component (a) and the nonionic surfactant other than the component (a).

From the viewpoint of foam control, the liquid detergent composition for hard surfaces of the present invention has an amphoteric surfactant content of preferably 0.5% by mass or more, more preferably 1% by mass or more, further It is preferably 1.5% by mass or more, and preferably 5% by mass or less, more preferably 4% by mass or less, further preferably 3% by mass or less, and further preferably 2.5% by mass or less.

The hard surface treating agent composition of the present invention is a liquid composition containing water. In order to ensure the uniformity of the liquid after long-term storage, the content of water in the composition is preferably 50% by mass or more, more preferably 60% by mass or more, further preferably 70% by mass or more, and 80% by mass or more. Is more preferable. The content of water in the composition is preferably 95% by mass or less, more preferably 90% by mass or less, and further preferably 85% by mass or less.

Moreover, the liquid detergent composition for hard surfaces of the present invention may contain a metal ion scavenger [hereinafter referred to as component (c)].

Specific examples of the component (c) include one or more metal ion scavengers selected from the following (c1) to (c3).
(C1) Aspartic acid, glutamic acid, glycine and other amino acids, and their alkali metal salts or alkanolamine salts.
(C2) Aminocarboxylic acid such as nitrilotriacetic acid, iminodiacetic acid, ethylenediaminetetraacetic acid, hydroxyethylethylenediaminetriacetic acid, diethylenetriaminepentaacetic acid, glycol etherdiaminetetraacetic acid, hydroxyethyliminodiacetic acid, triethylenetetraminehexaacetic acid, and dienecoric acid , And alkali metal salts or alkanolamine salts thereof.
(C3) Organic acids such as diglycolic acid, oxydisuccinic acid, carboxymethyloxysuccinic acid, citric acid, lactic acid, tartaric acid, oxalic acid, malic acid, oxydisuccinic acid, gluconic acid, carboxymethylsuccinic acid, carboxymethyltartaric acid, and the like 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 preferable. Of these, one or more selected from citric acid, ethylenediaminetetraacetic acid, and salts thereof are preferable. The salt form is preferably sodium salt, potassium salt, ammonium salt, or alkanolamine salt.

The content of the component (c) in the composition is preferably 0.1% by mass or more, further 0.5% by mass or more, further 1% by mass or more, further 2% by mass or more, further 3% by mass or more, and It is preferably 10% by mass or less, more preferably 8% by mass or less, further 6% by mass or less, further preferably 5% by mass or less.

Further, the liquid detergent composition for hard surfaces of the present invention may contain an organic solvent [hereinafter referred to as (d) component].

Examples of the organic solvent used as the component (d) include various mono-, di- or tri-alkylene glycol monoethers and mono-, di- or tri-alkylene glycol diethers. Specifically, mono-, di- or tri-ethylene glycol monoether, and mono-, di- or tri-ethylene glycol diether, and mono-, di- or tri-propylene glycol monoether, and mono-, Di- or tri-propylene glycol diethers are suitable. Such glycol monoether and glycol diether preferably have an alkyl group, and the alkyl group can be selected from alkyl groups having various carbon numbers. For example, methyl, ethyl, propyl, butyl, hexyl and the like. In these glycol ethers and glycol diethers, the total number of carbon atoms in the compound is preferably 4 or more, more preferably 6 or more, more preferably 8 or more, and preferably 14 or less, more preferably 12 or less, more preferably 10 or less. Is.

As the component (d), from the viewpoint of imparting antifouling properties, ethylene glycol mono-butyl ether, diethylene glycol mono-butyl ether, ethylene glycol mono-isobutyl ether, diethylene glycol mono-isobutyl ether, ethylene glycol mono-hexyl ether, diethylene glycol mono-hexyl. Ether, propylene glycol mono-butyl ether, dipropylene glycol mono-butyl ether, dipropylene glycol mono-methyl ether, tripropylene glycol mono-methyl ether, ethylene glycol mono-isopropyl ether, 2-propanol, ethylene glycol mono-2-ethylhexyl ether , One or more organic solvents selected from propylene glycol mono-n-propyl ether and dipropylene glycol mono-n-propyl ether. Among them, one or more kinds of organic solvents selected from ethylene glycol mono-butyl ether and diethylene glycol mono-butyl ether are preferable, and diethylene glycol mono-butyl ether is more preferable.

In the composition, the content of the component (d) is preferably 1% by mass or more, more preferably 3% by mass or more, more preferably 5% by mass or more, more preferably 6% by mass or more, and more preferably 7% by mass or more. It is preferably 7.5 mass% or more. And as for content of (d) component, 30 mass% or less is preferable in a composition, 20 mass% or less is more preferable, 15 mass% or less is more preferable, 9 mass% or less is more preferable.

The liquid detergent composition for hard surfaces of the present invention can be formulated with an antiseptic, a hydrotrope, a dye, a viscosity modifier, an antioxidant, a fragrance, etc. within a range that does not impair detergency and foaming. ..

From the viewpoint of safety during use, the liquid detergent composition for hard surfaces of the present invention preferably has a pH at 20° C. of 5 or more, more preferably 6 or more, and 12 or less, further 10 or less, further 9 Hereafter, it is preferably 8 or less. A pH adjuster can be used to adjust the pH. As the pH adjuster, an inorganic acid such as hydrochloric acid or sulfuric acid, or an acid agent such as an organic acid can be used. As the alkaline agent, sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate can be used.

The present invention has found that by using the component (a) and the component (b) as specific components of a water-containing composition under specific conditions, the foam stability and the foam extinction property are excellent. According to the present invention, a composition having a very limited composition exhibits a rich foaming property and a long-lasting foaming property during cleaning, but the foaming agent disappears instantly during rinsing, and a rinsing solution in which rinsing is completed with a small amount of water can be obtained. Is an unexpected effect that cannot be predicted from the technical common sense of the industry.

The liquid cleaning composition for hard surfaces of the present invention is preferably used for cleaning hard surfaces such as bathrooms, bathtubs, washbasins, tiles, toilets, washbasins, mirrors, kitchen sinks, countertops, and water supply facilities. Be done. Suitable for bathroom use. Here, the liquid detergent composition for bathroom is intended not only for the bathroom but also for articles having other hard surfaces existing in the bathroom, such as bathtubs and washbasins.

Moreover, the liquid detergent composition for hard surfaces of the present invention is suitable for spraying. It is preferably used as a liquid detergent product for spraying hard surfaces, which is filled in a spray container. According to the present invention, there is provided a liquid detergent article for hard surface, which is obtained by filling a spray type container with the liquid detergent composition for hard surface of the present invention.

Examples of the spray container include a spray container equipped with a trigger sprayer (referred to as a trigger spray container).
Examples of the trigger type spray container include a container body containing a liquid composition and a trigger type liquid ejector attached to the mouth portion of the container body, and further, a liquid at the mouth portion of the container body. A trigger type sprayer for ejecting the composition is attached, a vertical pipe line and a horizontal pipe line are formed inside the trigger type sprayer, and the vertical pipe line and the horizontal pipe line communicate with each other in the vertical pipe line. A spray container (referred to as a spray container (I)) provided with a valve for shutting off is described.
The spray container (I) includes a cylinder at a position below the horizontal conduit, a spin element is attached to the tip of the horizontal conduit, and a nozzle portion having a nozzle hole is fitted to the tip of the spin element. It is fixed in place. The spray container (I) draws a trigger to discharge the air in the cylinder to the outside, and when the trigger is returned, the liquid composition is sucked up through a vertical pipe soaked in the liquid composition of the container body, The liquid in the cylinder is extruded and guided to the vertical conduit by pulling the trigger again, and the horizontal conduit and the spin element impart spin to the flow of the liquid, and finally the nozzle is ejected from the nozzle. It is a thing. The method of applying the liquid composition of the present invention to the hard surface can be selected according to the size (area) of the hard surface and the like. For example, the stock solution of the composition of the present invention can be sprayed as it is to about 0.05 to 5 mL.

<How to clean hard surface>
The present invention provides a method for cleaning a hard surface, which comprises performing a step of rinsing with water after the step of applying the liquid detergent composition for hard surface of the present invention to a hard surface on which dirt is attached.
In the cleaning method of the present invention, a method in which the composition is filled in a spray container and sprayed in the form of foam to be applied to stains on a hard surface is preferable. In addition, it is preferable to rinse with a shower or the like after applying it to dirt, but from the viewpoint of improving the detergency, a method of scrubbing with a sponge and the like and then rinse with a shower is more preferable. The amount of application to the stain is preferably 0.3 g or more, more preferably 0.5 g or more, and 5 g or less, further preferably 2 g or less per 20 cm ^{2 in} order to obtain sufficient detergency. Even if the composition is applied and immediately rubbed with a sponge or the like, a good removal effect can be obtained, but after application to stains, 10 seconds or more, preferably 0.5 minutes or more, more preferably 1 minute or more, A method of standing for 5 minutes or less, preferably 3 minutes or less, more preferably 2 minutes or less and then scrubbing with a sponge or the like is preferable from the viewpoint of enhancing the detergency.

<Examples 1 to 3 and Comparative Examples 1 to 4>
The components shown in Table 1 were blended to prepare a hard surface liquid cleaning composition. The pH (20° C.) of each composition was adjusted to 7 with hydrochloric acid or sodium hydroxide. With respect to these compositions, foam stability and foam disappearance were evaluated. The results are shown in Table 1. The liquid detergent compositions for hard surfaces of the examples in Table 1 had good detergency for hard surfaces.

<Foam stability>
A commercially available spray-type bathroom cleaner (Bath Magic phosphorus, Kao Corporation) was washed and used. The container was filled with the liquid cleaning composition for hard surfaces shown in the table. A 10 g foam was made into a 200 ml graduated cylinder by pulling the trigger on the container 10 times. The pulling speed was 1 second per time. At this time, the volume was recorded from the scale of the graduated cylinder and used as the initial bubble amount. Then, the mixture was allowed to stand still, the volume of the foam after 3 minutes was measured, and the foam residual rate after 3 minutes with respect to the initial foam amount was determined by the following formula.
Foam residual rate (%) after 3 minutes=(foam amount after 3 minutes/initial foam amount)×100
If the foam residual rate after 3 minutes was 50% or more, the foam stability was good, and if this was less than 50%, the foam stability was poor, and this was evaluated as "x". ..

<Bubbling property>
A commercially available spray-type bathroom cleaner (Bath Magic phosphorus, Kao Corporation) was washed and used. The container was filled with the liquid cleaning composition for hard surfaces shown in the table. 5 g of foam was made into a 500 ml graduated cylinder by pulling off the trigger of the container 5 times. The pulling speed was 1 second per time. At this time, the volume was recorded from the scale of the graduated cylinder. This was taken as the initial foam amount.
Next, 50 ml of 3.5° DH hard water was added to the foam through a means for introducing hard water (handmade watering can) installed on the upper part of the graduated cylinder, and 50 ml of hard water was added every 1 minute, a total of 9 times. (50 ml of hard water was added 9 times in total, and the total amount added was 450 ml). For each operation of adding 50 ml of hard water, the amount of foam was measured 30 seconds after the total amount of hard water was added. This was taken as the amount of foam after addition of hard water.
FIG. 1 shows how hard water is added to the graduated cylinder. In FIG. 1, 1 is a graduated cylinder, 2 is a bubble, 3 is a means for introducing hard water (a handmade watering can), 4 is an opening of the introducing means, and FIG. 2 is a hole for opening 4 of the means 3 for introducing hard water. It is a schematic diagram showing a state. The method for producing a handmade watering can that is a means for introducing hard water is as follows. First, a 250 ml polypropylene wide-mouthed bottle (made by AS ONE: iboy wide-mouthed bottle) was cut from the bottom to a main body portion having a height of about one third. Next, as shown in FIG. 2, a polyethylene perforated plate having a diameter of 4 cm and having 13 holes of 2 mm in diameter at 9 mm intervals was prepared as shown in FIG. Finally, the above polyethylene perforated plate was fixed as the opening 4 to the lid opening (diameter 4 cm) at the upper part of the excised wide-mouth bottle to prepare hard water introducing means 3 (handmade watering can). The hard water introducing means 3 (handmade watering can) thus produced was fitted into the opening of the graduated cylinder 1 while maintaining the inverted state as shown in FIG. Hard water was poured from the cut side of the wide-mouthed bottle.
From the initial amount of foam and the amount of foam after addition of hard water, the rate of change of foam amount shown by the following formula was obtained, and the foam extinguishing property was evaluated. The defoaming property is better as the amount of added hard water with a change rate of foam amount of 50% or less is smaller, and in the above evaluation, the amount of added hard water with a change rate of foam amount of 50% or less is 250 ml or less (hard water addition operation Is 5 times or less), it is evaluated as "○" because rapid defoaming can be achieved, and when the amount of hard water added is 300 ml (the hard water addition operation is 6 times) at which the rate of change in the amount of foam is 50% or less, It was evaluated as “△” as it was possible to achieve quick foam disappearance, and when the amount of hard water addition that caused the foam volume change rate to be 50% or less was 350 ml or more (hard water addition operation was 7 times or more), prompt foam disappearance. It was evaluated as "x" because it could not be achieved.
Change rate (%) of foam amount=[1-(foam amount after addition of hard water/initial foam amount)]×100

In the table, the mass% of the blended components is described in terms of effective components.
In the table, (a)+(b) is the total content (% by mass) of the components (a) and (b).
In the table, (a)/[(a)+(b)] is a mass ratio of [content of component (a)]/[total content of components (a) and (b)].
In the table, (a)/nonionic surfactant is a mass ratio of [content of component (a)]/[content of nonionic surfactant].

The components in the table are as follows.
<Component (a)>
-Nonionic surfactant (a1): Softanol 33, polyoxyethylene alkyl (sec-12-14) ether, ethylene oxide average addition mole number 3, manufactured by Nippon Shokubai Co., Ltd., the number of carbon atoms of the alkyl group is 12-14. Nonionic surfactant/nonionic surfactant (a2) in which 3 mol of ethylene oxide is added to a certain secondary alcohol on average: softanol 50, polyoxyethylene alkyl (sec-12-14) ether, and ethylene oxide average added mol Formula 5, manufactured by Nippon Shokubai Co., Ltd., a nonionic surfactant obtained by adding 5 mol of ethylene oxide on average to a secondary alcohol having an alkyl group with 12 to 14 carbon atoms.

<Component (b)>
-Nonionic surfactant (b1): Softanol 70H, polyoxyethylene alkyl (sec-12-14) ether, ethylene oxide average addition mole number 7, manufactured by Nippon Shokubai Co., Ltd., the number of carbon atoms of the alkyl group is 12-14. Nonionic surfactant/nonionic surfactant (b2) obtained by adding 7 mol of ethylene oxide to a certain secondary alcohol on average: Emulgen 102, polyoxyethylene alkyl ether, alkyl group having 12 to 14 carbon atoms, ethylene oxide average Nonionic surfactant/nonionic surfactant (2 moles added, manufactured by Kao Co., Ltd., an average of 2 moles of ethylene oxide added to a linear primary alcohol having an alkyl group having 12 to 14 carbon atoms ( b3): Emulgen 103, polyoxyethylene alkyl ether, alkyl group having 12 carbon atoms, ethylene oxide average addition mole number of 2.9, manufactured by Kao Corporation, straight-chain primary alcohol having 12 carbon atoms of alkyl group , Nonionic surfactant/nonionic surfactant (b4) with an average addition of 2.9 moles of ethylene oxide: Emulgen 104, polyoxyethylene alkyl ether, carbon number of alkyl group 12 to 16, ethylene oxide average addition mole number 3 .9, manufactured by Kao Corporation, nonionic surfactant sodium myristate: myristic acid, in which an average of 3.9 moles of ethylene oxide is added to a linear primary alcohol having an alkyl group having 12 to 16 carbon atoms. [Lunack MY-98, manufactured by Kao Corporation] was blended, and then neutralized with the sodium hydroxide used for pH adjustment and blended.
Sodium alkyl ether sulfate: polyoxyethylene (average number of moles of ethylene oxide added: 4.0) alkyl (sodium number 10 to 16) ether sulfate sodium (3-lauramidopropyl) dimethyl betaine: fatty acid (having 12 carbon atoms) amide Propyl-N,N-dimethyl-betaine acetate octylbenzyldimethylammonium chloride: Sanizol 08, manufactured by Kao Corporation

<Component (c)>
-EDTA: ethylenediaminetetraacetic acid tetrasodium salt-citric acid

<(d) component>
Diethylene glycol monobutyl ether: BDG-NS, manufactured by Nippon Emulsifier Co., Ltd.

From the results of Examples and Comparative Examples, it can be seen that the composition of the present invention using the component (a) and the component (b) under predetermined conditions is excellent in foam stability and foam extinction property.

Claims (5)

(A) A nonionic surfactant obtained by adding ethylene oxide on average to 1 mol or more and less than 6 mol to a secondary alcohol having 8 or more and 18 or less carbon atoms [hereinafter referred to as (a) component],
(B) One or more surfactants selected from anionic surfactants, cationic surfactants, amphoteric surfactants, and nonionic surfactants other than component (a) [hereinafter referred to as component (b). ], and
Contains water,
The total content of the components (a) and (b) is 3% by mass or more and 10% by mass or less,
[(A) the content of component] / [(a) component and (b) the total content of components] mass ratio is 0.05 or more state, and are 0.35 or less,
The mass ratio of [content of component (a)]/[content of nonionic surfactant] is 0.7 or more,
Liquid cleaning composition for hard surfaces. The content of the alkyl glycoside is less than 0.5 wt%, claim 1 Symbol placement hard surface liquid detergent compositions. The liquid detergent composition for hard surfaces according to claim 1 or 2 , which has a pH at 20°C of 5 or more and 12 or less. Any one term for hard surfaces liquid detergent composition according, formed by filling the spray container, liquid detergent article for hard surfaces according to claim 1-3. A method of cleaning a hard surface, which comprises a step of rinsing with water after the step of applying the liquid detergent composition for hard surface according to any one of claims 1 to 3 to the hard surface on which dirt is attached.

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