JP6969968B2 - Liquid detergent composition for hard surfaces - Google Patents

Description

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

Generally, cleaning agents for kitchens such as ranges, ovens, walls and floors around ranges, and ventilation fans, and cleaning agents used for food processing equipment have been altered by the action of heat, sunlight, oxygen in the air, and the like. In order to remove oil stains, a cleaning agent containing a surfactant, a solvent, an alkaline agent and the like is used.

Patent Document 1 describes 0.001 of one or more selected from the group consisting of (a) monoalkyl ether of polyalkylene glycol, (b) amine oxide, (c) fatty acid having 8 to 18 carbon atoms and a salt thereof. It contains ~ 15% by mass and water, and the mass ratio of (c) component / ((b) component + (c) component) is 0.001 / 1-1 / 1, and 60 to 60 to (a) component. 100% by mass is a monoalkyl ether having 4 to 8 carbon atoms in the alkyl group of dipropylene glycol, and has an excellent detergency against cooking oil stains, characterized by having a pH of 8 to 14 at 25 ° C. In the detergent composition for a hard surface having, a liquid detergent composition for a hard surface capable of forming a uniform liquid composition with as little surfactant as possible is described.

Further, Patent Document 2 describes (a) 1 to 40% by weight of an anionic surfactant, (b) 1 to 20% by weight of a specific tertiary amine oxide, and (c) 16 to 20% by weight of a fatty acid residue. It contains 1 to 20% by weight of glycerin fatty acid ester, which is 24 and has a monoglyceride content of 75 to 100%, and (a) + (b) is 5 to 40% by weight, and (c) / [ (A) + (b)] is 0.05 to 1 by weight, which is a milky liquid hard surface detergent composition that not only has excellent detergency and foaming property, but also has excellent usability and does not cause rough hands. Have been described.

Further, Patent Document 3 describes (a) 1 to 50% by weight of an alkyl glycoside, and (b) (b-1) a melting point of 30 ° C. or higher selected from hydrocarbons, higher alcohols, fatty acids, waxes, cholesterol and cholesterol esters. Lipids, (b-2) partial esters of fatty acids having an average carbon number of 13 or more in aliphatic hydrocarbon polyols having a melting point of 30 ° C. or higher and having 2 to 9 carbon atoms, and (b-3) carbon atoms having a melting point of 30 ° C. or higher and having 2 to 9 carbon atoms. It contains 1 to 30% by weight of one or more compounds selected from the group consisting of partial ethers of aliphatic hydrocarbons having an average carbon number of 13 or more of 9 aliphatic hydrocarbon polyols, and contains components (a) and (b). The compounding ratio of (b) / (a) = 1/10 to 10/1 by weight, excellent in cleanability and foaming property, no reattachment of dirt, no rough hands, and hands after washing. Described are emulsion hard surface cleaning agent compositions that give a good feel to the skin.

Japanese Unexamined Patent Publication No. 2012-126883 Japanese Unexamined Patent Publication No. 5-98290 Japanese Unexamined Patent Publication No. 5-148494

As a cleaning agent for kitchen surroundings and a cleaning agent used for food processing equipment, a cleaning agent capable of removing oil stains containing modified oil, particularly oil stains containing heat-modified oil is desired.
Patent Documents 2 and 3 describe a mild detergent composition for the skin containing an amine oxide type surfactant and a glycerin fatty acid ester, but the main base material for cleaning is another active agent and is an amine oxide type. It does not suggest that a detergent composition containing a surfactant and a glycerin fatty acid ester as a main base material has an excellent cleaning effect on modified oil stains.

The present invention relates to a liquid detergent composition for a hard surface, which is excellent in detergency of oil stains containing denatured oil such as heat-modified oil (hereinafter, also simply referred to as detergency), and a method for cleaning a hard surface using the same. ..
In the present specification, the modified oil means an oil containing an oily component that has been altered by the action of heat, sunlight, oxygen in the air, or the like. The heat-denatured oil is an oil that has been denatured by heat and contains an oil component that has been oxidized by heat.

The present invention is a liquid detergent composition for a hard surface containing 0.1% by mass or more and 20% by mass or less of a surfactant and water.
As the surfactant, (a) an amine oxide type surfactant having at least one alkyl group or alkenyl group having 7 or more and 12 or less carbon atoms [hereinafter referred to as (a) component] and (b) carbon of a fatty acid residue. Contains a glycerin fatty acid ester [hereinafter referred to as component (b)] having a number of 10 or more and 18 or less.
In the surfactant, the total content of the component (a) and the component (b) is 40% by mass or more.
The present invention relates to a liquid detergent composition for a hard surface.

The present invention also relates to a method for cleaning a hard surface, in which the liquid detergent composition for a hard surface is brought into contact with a hard surface to which oil stains containing modified oil are attached.

According to the present invention, a liquid cleaning agent composition for a hard surface having excellent detergency for oil stains containing a modified oil such as a heat-modified oil, and a modified oil such as a heat-modified oil adhering to a hard surface using the composition. Provided is a method for cleaning a hard surface for removing oil stains including.

<Liquid detergent composition for hard surfaces>
The heat-modified oil contains an oil component in which a part of the oil component is changed to a polar group due to the oxidation of the oil by heat, a quantified and quantified oil component, and a high molecular weight oil component in which the oxidation reaction is sequentially advanced. The oil is highly viscous, and in order to remove this highly viscous heat-modified oil, it is necessary for the surfactant to permeate the heat-modified oil and to emulsify or solubilize the oil with the surfactant. Is considered to be.
The reason why the liquid detergent composition for hard surfaces of the present invention is excellent in the detergency of oil stains containing modified oils, particularly heat-modified oils, is not always clear, but the components (a) and (b) of the present invention By using both, it becomes easy to permeate into the heat-modified oil, and the heat-modified oil can be effectively emulsified, so it is presumed that a high cleaning effect was obtained.

<Surfactant>
The liquid detergent composition for a hard surface of the present invention contains a component (a) and a component (b) as a surfactant.
The liquid cleaning agent composition for a hard surface of the present invention contains a surfactant in an amount of 0.1% by mass or more, preferably 0.5% by mass or more, more preferably 1% by mass or more, still more preferably, from the viewpoint of detergency. Is 2% by mass or more, more preferably 2.5% by mass or more, and from the viewpoint of compounding stability, 20% by mass or less, preferably 15% by mass or less, more preferably 10% by mass or less, still more preferably 8% by mass. % Or less, more preferably 6% by mass or less, still more preferably 4% by mass or less.

<(A) component>
The component (a) of the present invention is an amine oxide-type surfactant having at least one alkyl group or alkenyl group having 7 or more and 12 or less carbon atoms.
From the viewpoint of detergency, the component (a) is preferably an amine oxide having one alkyl group having 7 or more and 12 or less carbon atoms or an alkenyl group, and more preferably an amine oxide having one alkyl group having 7 or more and 12 or less carbon atoms. Preferably, an amine oxide having one alkyl group having 9 or more and 12 or less carbon atoms is more preferable, and an amine oxide having one alkyl group having 12 carbon atoms is even more preferable.

As the component (a), a compound represented by the following general formula (a1) is suitable from the viewpoint of detergency.

[In the formula, R ^1a represents an alkyl group or an alkenyl group having 7 or more and 12 or less carbon atoms, and R ^2a and R ^3a independently represent an alkyl group having 1 or more and 3 or less carbon atoms. D represents an -NHC (= O) -group or a -C (= O) NH- group, and E represents an alkylene group having 1 or more carbon atoms and 5 or less carbon atoms. q and p indicate q = 0 and p = 0 or q = 1 and p = 1. ]

In formula (a1), a q = 1 and p = 1, if D is -C (= O) NH- ^{group, R 1a,} from the viewpoint of detergency, the number 7 to 11 carbon atoms, more It is preferably an alkyl group having 9 or more carbon atoms and 11 or less carbon atoms, and more preferably an alkyl group having 11 carbon atoms.
Further, when q = 1 and p = 1 and D is a −NHC (= O) − group, or when q = 0 and p = 0, R ^1a preferably has 8 carbon atoms from the viewpoint of detergency. It is an alkyl group having 12 or more carbon atoms, more preferably an alkyl group having 10 or more carbon atoms and 12 or less carbon atoms, and further preferably an alkyl group having 12 or more carbon atoms.
R ^2a and R ^3a are preferably methyl groups having 1 carbon atom from the viewpoint of detergency.
From the viewpoint of detergency, q and p are preferably q = 0 and p = 0.

As a preferable specific example of the component (a),
(1) Alkyl (8 or more and 12 or less carbon atoms) dialkyl (1 or more and 3 or less carbon atoms) amine oxide or alkenyl (8 or more and 12 or less carbon atoms) dialkyl such as lauryldimethylamine oxide, decyldimethylamine oxide, and octyldimethylamine oxide. (Carbon number 1 or more and 3 or less) Amine oxide,
(2) Fatty acid such as lauric acid amidopropyldimethylamine oxide (carbon number 8 or more and 12 or less) Amidopropyldialkyl (carbon number 1 or more and 3 or less) amine oxide can be mentioned. (1) Alkyl (carbon number) 8 or more and 12 or less) Dialkyl (1 or more and 3 or less carbon atoms) amine oxide or alkenyl (8 or more and 12 or less carbon atoms) dialkyl (1 or more and 3 or less carbon atoms) amine oxide is more preferable.

The liquid cleaning agent composition for a hard surface of the present invention contains the component (a) in an amount of preferably 0.05% by mass or more, more preferably 0.25% by mass or more, still more preferably 0.5, from the viewpoint of detergency. Mass% or more, more preferably 1% by mass or more, still more preferably 1.25% by mass or more, and from the viewpoint of compounding stability, preferably 10% by mass or less, more preferably 7.5% by mass or less. It is more preferably 5% by mass or less, still more preferably 4% by mass or less, still more preferably 3% by mass or less, still more preferably 2% by mass or less.

The liquid detergent composition for a hard surface of the present invention may contain an amine oxide type surfactant other than the component (a) as long as the effect of the present invention is not impaired.
In the liquid detergent composition for hard surfaces of the present invention, the content of the component (a) is from the viewpoint of detergency in an amine oxide having at least one alkyl group or alkenyl group having 8 or more and 24 or less carbon atoms. It is preferably 50% by mass or more, more preferably 70% by mass or more, further preferably 80% by mass or more, still more preferably 90% by mass or more, and preferably 100% by mass or less, and 100% by mass. You may. Here, the amine oxide having at least one alkyl group or alkenyl group having 8 or more and 24 or less carbon atoms has an alkyl group or alkenyl having ^{R 1a having 8 or more and 24 or less carbon atoms in the above general formula (a1).} It preferably has the same structure except that it is a group.

<(B) component>
The component (b) of the present invention is a glycerin fatty acid ester having 10 or more and 18 or less carbon atoms in the fatty acid residue.
In the present invention, the fatty acid residue refers to the fatty acid residue excluding the OH of the carboxyl group of the raw material fatty acid.

In the component (b), the ester structure of glycerin and fatty acid may be one or more selected from a triester structure, a diester structure, and a monoester structure, and a monoester structure is preferable.

In the component (b), the number of carbon atoms of the fatty acid residue is 10 or more, preferably 12 or more, more preferably 14 or more, and 18 or less, and 18 is particularly preferable, from the viewpoint of detergency.
Examples of the raw material fatty acid of the fatty acid residue include one or more selected from oleic acid, stearic acid, linoleic acid, palmitic acid, myristic acid, lauric acid, and capric acid, and from the viewpoint of detergency, oleic acid and palmitic acid. One or more selected from acid, myristic acid, lauric acid and capric acid is preferable, one or more selected from oleic acid, palmitic acid and myristic acid is more preferable, and one or more selected from oleic acid and palmitic acid is further preferable. Preferably, oleic acid is even more preferred. Further, the raw material fatty acid of the fatty acid residue may be a mixed fatty acid derived from vegetable oil such as palm oil and olive oil, and animal oil such as beef tallow and lard.

The liquid cleaning agent composition for a hard surface of the present invention contains the component (b) in an amount of preferably 0.05% by mass or more, more preferably 0.25% by mass or more, still more preferably 0.5, from the viewpoint of detergency. Mass% or more, more preferably 1% by mass or more, still more preferably 1.25% by mass or more, and from the viewpoint of compounding stability, preferably 10% by mass or less, more preferably 7.5% by mass or less. It is more preferably 5% by mass or less, still more preferably 4% by mass or less, still more preferably 3% by mass or less, still more preferably 2% by mass or less.

The liquid detergent composition for a hard surface of the present invention may contain a glycerin fatty acid ester other than the component (b) as long as the effect of the present invention is not impaired.
In the liquid cleaning agent composition for a hard surface of the present invention, the content of the component (b) in the glycerin fatty acid ester in which the number of carbon atoms of the fatty acid residue is 8 or more and 24 or less is 50% by mass or more from the viewpoint of detergency. It is preferably 60% by mass or more, more preferably 70% by mass or more, further preferably 80% by mass or more, still more preferably 90% by mass or more, and preferably 100% by mass or less, and 100% by mass. May be.

In the liquid detergent composition for hard surfaces of the present invention, the mass ratio (a) / (b) of the content of the component (a) to the content of the component (b) is preferably 0 from the viewpoint of detergency. .4 or more, more preferably 0.7 or more, still more preferably 1 or more, and from the same viewpoint, preferably 20 or less, more preferably 15 or less, still more preferably 12 or less, still more preferably 10 or less, more. It is more preferably 8 or less, still more preferably 7 or less, still more preferably 5 or less, and even more preferably 2 or less.

In the liquid cleaning agent composition for a hard surface of the present invention, the total content of the content of the component (a) and the content of the component (b) is preferably 0.1% by mass or more from the viewpoint of detergency. More preferably 0.5% by mass or more, further preferably 1% by mass or more, still more preferably 1.5% by mass or more, still more preferably 2% by mass or more, still more preferably 2.5% by mass or more, and From the viewpoint of compounding stability, it is preferably 20% by mass or less, more preferably 15% by mass or less, further preferably 10% by mass or less, still more preferably 8% by mass or less, still more preferably 6% by mass or less, and more. More preferably, it is 4% by mass or less.

The content of the surfactant other than the component (a) and the component (b) in the liquid detergent composition for a hard surface of the present invention is preferably less than 60% by mass, more preferably 50% by mass from the viewpoint of detergency. %, More preferably less than 40% by weight, even more preferably less than 20% by weight, even more preferably less than 10% by weight, and particularly preferably less than 5% by weight and even 0% by weight. ..

In the liquid cleaning agent composition for hard surface of the present invention, the total content of the content of the component (a) and the content of the component (b) in the surfactant [((a) + (b)) / surfactant The activator] is 40% by mass or more, preferably 50% by mass or more, more preferably 60% by mass or more, still more preferably 80% by mass or more, still more preferably 90% by mass or more, and from the viewpoint of detergency. It is preferably 100% by mass or less, and may be 100% by mass.

<Other ingredients>
In addition to the components (a) and (b), the hard surface cleaning agent composition of the present invention contains an acrylic acid-maleic acid copolymer or a salt thereof, and a methacrylic acid-malein, as long as the object of the present invention is not impaired. Anti-repositioning agents for stains such as acid copolymers or salts thereof, and diisobutylene-maleic acid copolymers or salts thereof; chelating agents such as EDTA, MGDA, citric acid; solvents, hydrotropics, dispersants, pH Other ingredients such as regulators, thickeners, viscosity regulators, fragrances, colorants, antioxidants, preservatives, bleaching agents, bleaching activators and the like can be blended.

The liquid detergent composition for hard surfaces of the present invention contains water. That is, in the liquid detergent composition for a hard surface of the present invention, the balance other than the component (a), the component (b) and the optional component is water. From the viewpoint of handleability, the liquid detergent composition for a hard surface of the present invention preferably contains 60% by mass or more, more preferably 70% by mass or more, still more preferably 80% by mass or more, still more preferably 90% by mass. From the viewpoint of mass% or more and detergency, it is preferably contained in an amount of 99.9% by mass or less, more preferably 99.5% by mass or less, still more preferably 99% by mass or less. As the water, it is preferable to use ion-exchanged water, sterile ion-exchanged water, or the like.

The pH of the liquid detergent composition for a hard surface of the present invention at 25 ° C. by the glass electrode method is preferably in the neutral region, and is preferably 5 or more, more preferably 5.5 or more, from the viewpoint of facilitating handling. It is more preferably 6 or more, preferably 9 or less, more preferably 8.5 or less, still more preferably 8 or less.

The liquid detergent composition for a hard surface of the present invention is preferably for a hard surface of a hard article, and more preferably for a hard surface of a food processing facility or a cooking facility.
"Food processing equipment and / or cooking equipment" means equipment and equipment used when processing and / or cooking food in a food processing factory. Examples of such equipment include pipes, parts, conveyor belts and fryer, freezer, slicer, rice milling machine and other food manufacturing or cooking equipment. Further, examples of such equipment include floors, walls, work tables, and the like.
Specifically, the liquid cleaning agent composition for a hard surface of the present invention is preferably a cleaning agent for coating a hard article on a hard surface, and more preferably a cleaning agent for coating on a hard surface of a food processing facility or a cooking facility. Is.
Specifically, the liquid detergent composition for hard surfaces of the present invention is preferably a cleaning agent for spraying on the hard surface of hard articles, and more preferably for spraying on the hard surface of food processing equipment or cooking equipment. It is a cleaning agent.

Examples of hard articles include food manufacturing equipment such as pipes and parts, and hard articles around kitchens.
Hard articles around the kitchen are articles used around the kitchen, specifically,
(1) Storage place for food such as refrigerators and cupboards, tableware, and cooking utensils,
(2) Drainage ditch, countertop, range hood, sink, gas range, microwave oven and other food cooking areas, and (3) floors and walls around it, and dining room, dining table around dining, floors, walls, tatami mats, etc. Pillars, slippers, etc. In the present invention, these are referred to as "hard articles around the kitchen" for convenience.
Further, the hard surface to be cleaned of the present invention and the hard surface around the kitchen include plastic (including silicone resin), metal, pottery, wood, and combinations thereof.

<How to clean the hard surface>
The method for cleaning a hard surface of the present invention is a method for cleaning a hard surface using the liquid cleaning agent composition for a hard surface of the present invention in which the composition is brought into contact with the hard surface for cleaning.
A preferred embodiment of the composition is the same as the above-mentioned liquid detergent composition for hard surface of the present invention.

The method for cleaning a hard surface of the present invention is a method for cleaning a hard surface in which the liquid detergent composition for a hard surface of the present invention is brought into contact with a hard surface to which oil stains including a modified oil, particularly a heat-modified oil, are attached. It can be preferably carried out. These methods are methods for cleaning a hard surface in which the liquid detergent composition for a hard surface of the present invention is brought into contact with oil stains containing a modified oil adhering to the hard surface, particularly a heat-modified oil.

In the method for cleaning a hard surface of the present invention, the liquid detergent composition for a hard surface is brought into contact with the hard surface.
Specifically, the liquid detergent composition for a hard surface is brought into contact with a hard surface with a stock solution, or the liquid detergent composition for a hard surface is brought into contact with a hard surface without being diluted with a stock solution. That is, a cleaning method in which the liquid detergent composition for a hard surface is brought into contact with a hard surface without being diluted is preferably mentioned. Further, there is a cleaning method in which the liquid detergent composition for a hard surface is brought into contact with a hard surface to which oil stains including a modified oil, particularly a heat-modified oil, are attached without diluting.

However, a concentrated composition containing the component (a) and the component (b) of the present invention is prepared, and the concentrated composition is diluted with water to prepare the liquid detergent composition for a hard surface of the present invention. It may be in contact with a hard surface. That is, the concentrated composition containing the component (a) and the component (b) of the present invention is diluted with water to prepare a liquid detergent composition for a hard surface of the present invention, and the liquid detergent composition for a hard surface is prepared. It may be a method of cleaning a hard surface in which an object is brought into contact with the hard surface without being diluted.

Further, as a method for cleaning a hard surface of the present invention, there is a cleaning method in which the liquid detergent composition for a hard surface is brought into contact with the hard surface and then left without applying mechanical force (without applying). That is, there is a cleaning method in which a flexible material such as a sponge, a finger, or the like is brought into contact with each other and left as it is without applying mechanical force. This is suitable for cleaning parts that are out of reach of hands and tools and details that are difficult to reach.
Leaving without mechanical force means, for example, no intentional operation for cleaning other than contacting the composition. For example, it can be understood that the contacted composition naturally flows down the hard surface, and vibration unintended for cleaning is transmitted to the hard surface when left without applying mechanical force.
After leaving it, it is usually rinsed with water. When rinsing, mechanical force (physical force) may be applied by hand or simply rinsing with a stream of water.

In the method for cleaning a hard surface of the present invention, the liquid detergent composition for a hard surface is preferably 0.1 g or more, more preferably 0.3 g or more, with respect to ^{an area of 100 cm 2 of the hard surface as an object.} It is more preferably 0.4 g or more, preferably 5 g or less, more preferably 3 g or less, still more preferably 2 g or less, and further preferably coated or sprayed.

In the method for cleaning a hard surface of the present invention, from the viewpoint of enhancing the cleaning power, after the liquid detergent composition for a hard surface is brought into contact with the hard surface, it is preferably 10 seconds or longer, more preferably 20 seconds or longer, still more preferably 30 seconds. The above, more preferably 40 seconds or more, and from the same viewpoint, preferably 60 minutes or less, more preferably 30 minutes or less, still more preferably 20 minutes or less, still more preferably 10 minutes or less, still more preferably 5. Leave it for less than a minute. In this case, the time when the composition first comes into contact with the hard surface may be the start of leaving.
The temperature when left to stand may be room temperature, for example, 10 ° C. or higher and 30 ° C. or lower.

Further, in the method for cleaning a hard surface of the present invention, from the viewpoint of enhancing the cleaning power, preferably 10 seconds or more, more preferably 20 seconds or more, further preferably 30 seconds or more, still more preferably 40 seconds or more, and the same. From the viewpoint of the above, preferably 60 minutes or less, more preferably 30 minutes or less, still more preferably 20 minutes or less, still more preferably 10 minutes or less, still more preferably 5 minutes or less, in the liquid detergent composition and the cleaning target. Contact with a hard surface.

In the method for cleaning a hard surface of the present invention, the liquid cleaning agent composition for a hard surface is brought into contact with the hard surface to which a modified oil, particularly an oil stain containing a heat-modified oil, is attached by immersing the composition. However, from the viewpoint of efficiently enhancing the detergency, a method of spraying or applying the oil to bring it into contact with a hard surface to which a modified oil, particularly oil stain containing a heat-modified oil, or the like is attached is preferable.
As a method of bringing the liquid detergent composition for a hard surface into contact with a hard surface to which oil stains or the like are attached, spraying or coating is preferable, and a method of spraying in the form of droplets or coating in the form of bubbles is preferable. Specifically, a spraying means is used. That is, it is preferable to use a hard surface detergent article obtained by filling a container provided with a sprayer with the liquid detergent composition for a hard surface of the present invention. The present invention provides a hard surface detergent article in a spray container, wherein the liquid detergent composition for a hard surface of the present invention is filled in a container provided with a sprayer.

As the container provided with the sprayer for filling the hard surface liquid cleaning agent composition of the present invention in the hard surface cleaning agent article containing the spray container of the present invention, a propellant such as a trigger type spray container or a pump type spray container is used. Examples include manual spraying devices that do not, aerosols that use propellants, and the like. The container provided with the sprayer is preferably a trigger type spray capable of spraying or applying the contents in the form of droplets or bubbles, and is a trigger type spray or a trigger type spray having a mechanism for spraying the contents in the form of droplets. A trigger type spray provided with a foam forming mechanism (foam forming mechanism) is more preferable.

In the case of using a trigger type spray provided with a mechanism for spraying the liquid cleaning agent composition for a hard surface of the present invention in the form of droplets in the article for cleaning a hard surface in a spray container of the present invention, a spray container containing the composition. The nozzle diameter of the spray nozzle is preferably 0.1 mm or more, more preferably, because it is easy to spray, the sprayed droplets are not rough, the spray is not linearly sprayed, and the sprayable area is not extremely narrowed. Is in the range of 0.3 mm or more, preferably 2 mm or less, and more preferably 1 mm or less.
When a trigger type spray having a mechanism for spraying in the form of droplets is used, the detergent article for a hard surface for a hard surface in a spray container of the present invention is preferably 0.1 mL or more, more preferably 0.3 mL in one operation. And more, preferably 5 mL or less, more preferably 2 mL or less of the composition is sprayed.

When a trigger type spray provided with a foam forming mechanism is used, the hard surface cleaning agent article in a spray container of the present invention is preferably 0.5 mL or more, more preferably 1 mL or more, and preferably 1 mL or more in one operation. Spray a composition of 30 mL or less, more preferably 15 mL or less, even more preferably 5 mL or less.

The method for cleaning a hard surface of the present invention is preferable as a method for cleaning a hard surface of a hard article and a hard surface of a food processing facility and / or a cooking facility. Further, it is preferable as a method for hand-washing the hard surface of a hard article, and further as a method for hand-washing the hard surface of food processing equipment and / or cooking equipment.

The method for cleaning a hard surface of the present invention targets the hard surface of a hard article, preferably the hard surface of a food processing facility and / or a cooking facility.
Examples of the hard article, food processing equipment and / or cooking equipment include those mentioned above.
Examples of the material of the hard surface to be the target of the method for cleaning the hard surface of the present invention include plastic (including silicone resin), metal, pottery, wood, and combinations thereof.
The method for cleaning a hard surface of the present invention can effectively clean oil stains containing modified oil, particularly heat-modified oil, adhering to these hard surfaces.

In the method for cleaning a hard surface of the present invention, it is preferable that the liquid detergent composition for a hard surface of the present invention is brought into direct contact with the hard surface. Since the composition may be left in contact with the composition, it is not necessary to apply mechanical force such as scrubbing with a flexible material such as a sponge at the time of washing.
The method for cleaning a hard surface of the present invention is a step of rinsing a hard surface in contact with the liquid detergent composition for hard surface with water, preferably a hard surface in contact with the liquid detergent composition for hard surface. Can include a step of rinsing with water after leaving.

The liquid detergent composition for hard surface shown in Table 1 was prepared using the following compounding ingredients, and the following items were evaluated. The results are shown in Table 1. The liquid detergent composition for a hard surface shown in Table 1 was prepared by a conventional method. That is, the component (a), the component (a'), the component (b), and other surfactants are added to an appropriate amount of ion-exchanged water, and after heating and dissolving at 60 ° C., the temperature is returned to room temperature (25 ° C.) and water is added. The pH (25 ° C.) was adjusted to 7 by adding sodium oxide and / or hydrochloric acid. The mass% of the compounding components in Table 1 are all numerical values based on the effective amount.

<Ingredients>
(A) Ingredients-Lauryldimethylamine oxide: Anchtor 20N (manufactured by Kao Corporation), in the general formula (a1), ^R1a is a lauryl group, ^R2a and ^R3a are methyl groups, q = 0 and p = 0. Compound

(A') component (comparative component of (a) component)
Myristyldimethylamine oxide: Anchthol 40N (manufactured by Kao Corporation), in the general formula (a1), ^R1a is a myristyl group, ^R2a , ^R3a is a methyl group, q = 0 and p = 0.

(B) Ingredients-Glyceride monooleate: Exel O-95R (manufactured by Kao Corporation)
・ Monopalmitic acid glyceride: manufactured by Wako Pure Chemical Industries, Ltd., reagent ・ Monolauric acid glyceride: manufactured by Wako Pure Chemical Industries, Ltd., reagent ・ monocapric acid glyceride: manufactured by Wako Pure Chemical Industries, Ltd., reagent ・ monostearic acid glyceride: Wako Pure Chemical Industries, Ltd., Reagent

Other Surfactants ・ Alkyl Glycoside: Mydor 12 (manufactured by Kao Corporation)
-Polyoxyethylene (12) lauryl ether: () indicates the average number of moles of oxyethylene groups added.-Polyoxyethylene (3) sodium lauryl sulfate: () indicates the average number of moles of oxyethylene groups added.

[Evaluation of detergency of heat-denatured oil]
A heat-modified oil was prepared by allowing rapeseed oil (manufactured by Wako Pure Chemical Industries, Ltd.) to stand at 180 ° C. for 8 hours and heating it. ^{After applying about 1 mg / cm 2} to a test piece (SUS304, 1 mm x 25 mm x 70 mm, manufactured by Engineering Test Service Co., Ltd.) (x) weighed in advance using the last 4 digits of the electronic balance, each heat-denatured oil is applied to the lower 4 Weighed using a girder balance (y).

After applying the oil, the test piece was sprayed with a liquid detergent composition for a hard surface in the form of foam using a pump former (for biore hand wash, manufactured by Kao Co., Ltd.) in the form of foam, and left to stand for 20 minutes. After washing for 20 minutes, the test piece was rinsed with tap water at 25 ° C. for 1 minute using a leanut tester (water volume 700 ml, rotor rotation speed 300 rpm). After rinsing, it was air-dried all day and night, and the mass of the washed test piece was weighed with an electronic balance of the last four digits (z).
The cleaning rate was calculated by the following formula. Table 1 shows the results of the cleaning rate when the heat-denatured oil heated for 8 hours was applied.
Cleaning rate (%) = {(y)-(z)} / {(y)-(x)} x 100

Claims (7)

A liquid detergent composition for a hard surface containing 0.1% by mass or more and 20% by mass or less of a surfactant and water.
As the surfactant, (a) an amine oxide type surfactant having at least one alkyl group or alkenyl group having 7 or more and 12 or less carbon atoms [hereinafter referred to as (a) component] and (b) carbon of a fatty acid residue. Contains a glycerin fatty acid ester [hereinafter referred to as component (b)] having a number of 10 or more and 18 or less.
In the surfactant, the total content of the component (a) and the component (b) is 40% by mass or more.
Liquid detergent composition for hard surfaces. The composition of a liquid detergent for a hard surface according to claim 1, wherein the mass ratio (a) / (b) of the content of the component (a) to the content of the component (b) is 0.4 or more and 20 or less. thing. The composition of a liquid detergent for a hard surface according to claim 1 or 2, wherein the total content of the component (a) and the component (b) is 0.1% by mass or more and 20% by mass or less. thing. (B) The liquid detergent composition for a hard surface according to any one of claims 1 to 3, wherein the raw material fatty acid of the fatty acid residue of the component is oleic acid. The liquid detergent composition for a hard surface according to any one of claims 1 to 4, wherein the pH at 25 ° C. is 5 or more and 9 or less. The liquid detergent composition for a hard surface according to any one of claims 1 to 5, which is for food processing equipment or cooking equipment. A method for cleaning a hard surface, wherein the cleaning agent composition according to any one of claims 1 to 6 is brought into contact with a hard surface to which oil stains containing modified oil are attached.