JP2018030926A - Detergent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel and improved detergent that prevents the scattering of bubbles and can clean a vehicle sufficiently with a small amount of water.SOLUTION: A detergent contains a surfactant, an alcohol, and water, the surfactant being at least one selected from a predetermined anionic surfactant, a predetermined ampholytic surfactant and a predetermined nonionic surfactant.SELECTED DRAWING: None

Description

  The present invention relates to a cleaning agent, and more particularly to a cleaning agent for removing various types of dirt on the surface of a vehicle such as an automobile.

  On the surface of a vehicle such as an automobile such as a painted surface or glass surface of a metal part, dirt such as dust, soot, oil particles, and dust may adhere to the surface. Depending on the adhered dirt, the painted surface, the glass surface, and the like may be roughened, so that the surface of the vehicle is frequently washed to wash away the dirt adhered to the surface. In addition, when applying wax for protecting the coating film on the painted surface, it is necessary to remove the deposit on the painted surface in advance. From the viewpoint of protecting the coating film, the surface of the vehicle is often washed.

  For vehicle cleaning, a cleaning agent containing a cleaning component such as a surfactant (in order to remove sticky oily deposits and to remove fine particles such as dust that can damage the coating surface) Shampoo) may be used. In particular, as a cleaning agent for vehicles, sufficient cleaning properties and foaming properties are required for the purpose, and selection of a material that does not attack the coating film surface is required. In recent years, vehicle cleaning agents that satisfy these requirements have been proposed (for example, Patent Document 1).

Japanese Patent Laid-Open No. 10-147794

  An example of a so-called car washing method for washing a vehicle using a cleaning agent will be given. First, put a liquid detergent and water in the bucket and stir well to create foam, creating a cleaning solution with plenty of foam. Next, water is applied to the surface of the vehicle to remove mud and sand, and then the surface of the vehicle is washed with a sponge or the like soaked in a cleaning solution with such a force that the sponge is slightly crushed. By washing with the cleaning liquid, the cleaning liquid bubbles adhere to the surface of the vehicle, envelop the fine particles adhering to the surface, and dissolve oil. Then, the foam in which the oil is dissolved and the fine particles are wrapped is washed away with running water using a hose or the like. Thereafter, water drops remaining on the surface of the vehicle are wiped off with a towel, mop or sponge. In this way, by removing dirt from the surface of the vehicle, it is possible to prevent the surface of the painted or glass surface of the vehicle from being damaged.

  However, when a detergent with high foaming property is used, although it is excellent in removing fine particles, the foaming of the cleaning liquid adhering to the vehicle surface cannot be completely wiped off with a towel or the like because foaming is too good. Therefore, the process of wiping with a towel etc. after pouring foam with running water as mentioned above will be taken. However, there are cases where it is not possible to wash the car around the water where it is easy to use running water using a hose or the like. For example, when washing a car in a parking lot located far from a water tap, it may be difficult to prepare a sufficient amount of water to wash away bubbles.

  That is, in a place where it is not easy to prepare water abundantly, if a car is washed with a highly foaming detergent, there is a risk that the wiping of the foam will be insufficient.

  Moreover, if the foam on the surface of the vehicle is washed away with running water, the cleaning liquid diffuses around the vehicle. Further, when the bubbles on the surface of the vehicle are wiped off, the bubbles tend to be scattered around the vehicle. In these cases, in order to clean up the cleaning liquid diffused around the vehicle and scattered bubbles, it may take more time in addition to the vehicle washing.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a novel device capable of suppressing the scattering of bubbles and sufficiently washing a vehicle with a small amount of water. And providing an improved cleaning agent.

  In order to solve the above-described problems, according to one aspect of the present invention, there is provided a cleaning agent comprising a surfactant, an alcohol, and water, wherein the surfactant is sodium polyoxyethylene lauryl ether acetate, N -Selected from sodium lauroyl-L-aspartate, N-coconut oil fatty acid acyl-N'-carboxyethyl-N'-hydroxyethylethylenediamine sodium, polyglyceryl-10 laurate, polyoxyethylene lauryl ether sodium sulfate, and laurylamine oxide Or two or more polyoxyethylene lauryl ether sodium acetate, polyoxyethylene tridecyl ether sodium acetate, polyoxyethylene lauryl ether sodium sulfate, N-coconut oil fatty acid acyl-L-glutamic acid triethanol Min, N-coconut oil fatty acid acyl-N′-carboxyethyl-N′-hydroxyethylethylenediamine sodium, 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, coconut oil fatty acid amidopropyl betaine, capric acid A cleaning agent is provided that is one or more selected from polyglyceryl-10 and polyglyceryl-10 laurate.

  The surfactant content is preferably 0.2% by mass to 0.8% by mass.

  The alcohol is preferably at least one selected from methanol, ethanol, normal propanol and isopropanol.

  It is preferable that content of the said alcohol is 0.5 mass%-15 mass%.

  The surfactant comprises sodium polyoxyethylene lauryl ether acetate, sodium N-lauroyl-L-aspartate, N-coconut oil fatty acid acyl-N′-carboxyethyl-N′-hydroxyethylethylenediamine sodium and polyglyceryl-10 laurate. The alcohol is preferably isopropanol.

  As described above, according to the present invention, it is possible to provide a new and improved cleaning agent capable of suppressing foam scattering and sufficiently washing a vehicle with a small amount of water.

  Hereinafter, embodiments of the cleaning agent of the present invention will be described in detail.

[Washing soap]
The cleaning agent of the present invention contains a surfactant, alcohol, and water. Furthermore, other components can be included as needed. Hereinafter, the components contained in the cleaning agent of the present invention will be described in detail.

{Surfactant}
The surfactant can act on the interface, which is the boundary surface of the substance, to change the properties of the interface. For example, a substance having both a hydrophilic part and a hydrophobic part in the molecule can be mentioned. In the cleaning agent of the present invention, it is possible to suppress foaming properties among surfactants that particularly act on the interface between the surface of the vehicle and dirt such as dust, smoke, oil particles, and dust adhered to the surface. Use things. As a result of suppressing the foaming property, the cleaning agent can be easily wiped off. Further, the car can be washed with a small amount of water without washing the foam with running water using a hose or the like. Furthermore, since the scattering of bubbles can be suppressed, a large car wash space is not required.

  Examples of such surfactants include polyoxyethylene lauryl ether sodium acetate, sodium N-lauroyl-L-aspartate, N-coconut oil fatty acid acyl-N′-carboxyethyl-N′-hydroxyethylethylenediamine sodium, lauric acid Mention may be made of two or more selected from polyglyceryl-10, sodium polyoxyethylene lauryl ether sulfate, and laurylamine oxide. By using two or more of these surfactants, foaming properties can be suppressed without deteriorating the cleaning performance. As a result of suppressing the foaming property, the cleaning agent can be easily wiped off. Further, the car can be washed with a small amount of water without washing the foam with running water using a hose or the like. Furthermore, since the scattering of bubbles can be suppressed, a large car wash space is not required.

  Further, the cleaning agent of the present invention is replaced with the above-mentioned surfactant as polyoxyethylene lauryl ether sodium acetate, sodium polyoxyethylene tridecyl ether acetate, polyoxyethylene lauryl ether sodium sulfate, N-coconut oil fatty acid Acyl-L-glutamic acid triethanolamine, N-coconut oil fatty acid acyl-N′-carboxyethyl-N′-hydroxyethylethylenediamine sodium, 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, coconut oil One or more types selected from fatty acid amidopropyl betaine, polyglyceryl-10 caprate and polyglyceryl-10 laurate can be mentioned. If these surfactants are used, foaming properties can be suppressed without deteriorating the cleaning performance. As a result of suppressing the foaming property, the cleaning agent can be easily wiped off.

  In the cleaning agent of the present invention, the content of the surfactant is preferably 0.2% by mass to 0.8% by mass. When the surfactant is in this range, the foaming property can be suppressed without reducing the detergency of the surfactant. As a result, the cleaning agent can be easily wiped off, the scattering of bubbles can be suppressed, and the car can be washed with a small amount of water. When the content of the surfactant is less than 0.2% by mass, the foaming property is excessively suppressed, so that foaming may not be sufficient, and the detergency may be reduced. Further, if the surfactant content is more than 0.8% by mass, it is difficult to suppress foaming and the cleaning power is satisfactory, but the amount of water is insufficient to wipe off the cleaning agent. There is a fear. In addition, bubbles may be scattered around the vehicle.

  In the cleaning agent of the present invention, as the surfactant, sodium polyoxyethylene lauryl ether acetate, sodium N-lauroyl-L-aspartate, N-coconut oil fatty acid acyl-N′-carboxyethyl-N′-hydroxyethylethylenediamine sodium It is particularly preferable to contain 0.2% by mass to 0.8% by mass of polyglyceryl-10 laurate. Polyoxyethylene lauryl ether sodium acetate and N-lauroyl-L-aspartic acid based on polyglyceryl-10 laurate, a nonionic surfactant that satisfies detergency, and an anionic surfactant with low foaming properties By using sodium in combination with N-coconut oil fatty acid acyl-N′-carboxyethyl-N′-hydroxyethylethylenediamine sodium, which is an amphoteric surfactant, in combination, it is easy to wipe off the cleaning power and cleaning agent. Can be satisfied, the amount of water used is small, and the feeling of use of the cleaning agent can be improved. Furthermore, the synergistic effect by the combination with a small amount of alcohol described later can satisfy the effect of dissolving and removing oily deposits such as attached oil particles without adversely affecting the surface of the vehicle. In particular, by containing 0.2 to 0.8% by mass of these surfactants in total, it is possible to produce a cleaning agent that has both a detergency and a foaming-suppressing effect safely and inexpensively. Is particularly preferred.

{alcohol}
In the cleaning agent of the present invention, the alcohol can impart an effect of dissolving and removing oily deposits such as oil particles attached to the surface of the vehicle. Moreover, the effect which satisfies the compatibility of the surfactant used for this invention is also acquired. Alcohol that gives such an effect is liquid under the temperature condition of −10 ° C. to 40 ° C. and volatilizes under the same temperature condition in consideration of using a cleaning agent in winter and summer. In addition, an alcohol satisfying the condition of being dissolved in water can be used. For example, when a solid alcohol is used under a temperature condition of −10 ° C. to 40 ° C., it may be difficult to efficiently dissolve oily deposits. In addition, alcohol that does not volatilize or hardly volatilize under the same temperature condition is likely to cause water droplets to remain on the surface of the vehicle even after wiping with water in the wiping process or the like, and there is a possibility that scales may remain and cause wiping failure. Furthermore, with alcohol that is difficult to dissolve in water, it may be difficult to construct the cleaning agent of the present invention.

  Examples of the alcohol that satisfies the above conditions include alcohols having 1 to 3 carbon atoms. The alcohol having 4 or more carbon atoms may be difficult to dissolve in water or may be a solid under a temperature condition of −10 ° C. to 40 ° C. Specifically, at least one selected from methanol, ethanol, normal propanol and isopropanol can be used for the cleaning agent of the present invention. By using these alcohols alone or in combination, oily deposits such as oil particles adhering to the surface of the vehicle can be removed well throughout the year without being affected by the four seasons. Further, the dissolution or dispersion of the surfactant in water can be satisfied.

  In the cleaning agent of the present invention, the alcohol content is preferably 0.5% by mass to 15% by mass. When the alcohol content is within this range, oily deposits attached to the surface of the vehicle can be removed well without deteriorating the surface of the vehicle. If the alcohol content is less than 0.5% by mass, the oily deposit may not be removed satisfactorily. Moreover, when there is more content of alcohol than 15 mass%, there exists a possibility of having a bad influence on the surface of a vehicle, such as discoloration of a coating film, swelling of packing, or melt | dissolution of a plastic part.

  In the cleaning agent of the present invention, it is particularly preferable to contain 0.5% by mass to 15% by mass of isopropanol alone as an alcohol. Isopropanol is industrially versatile, inexpensive, and easy to obtain and handle, so that it is easy to stably produce a cleaning agent. In addition, by containing 0.5 mass% to 15 mass% of isopropanol, it has good compatibility with water and surfactants, has excellent oily deposit removal performance, and is easy to wipe off cleaning agents. It can be.

{water}
In the cleaning agent of the present invention, water is used as a solvent capable of maintaining the surfactant and alcohol in a stably dissolved or dispersed state. There is no restriction | limiting in particular as water which can be used for this invention, General tap water, industrial water, ground water, pure water, deionized water, river water, spring water, etc. can be used without a problem. In order to improve the storage stability as a cleaning agent, it is preferable that impurities are not contained as much as possible. From such a viewpoint, it is particularly preferable to use pure water or deionized water. Even tap water, industrial water or groundwater can be used without any problem since it generally does not significantly affect the storage stability of the cleaning agent.

  In the cleaning agent of the present invention, the content of water is not particularly limited, and is, for example, 80% by mass to 99% in the cleaning agent as the balance of the cleaning agent including a surfactant, alcohol, and other components contained as necessary. 0.5% by mass can be contained.

  The surfactant, alcohol, and water components described above have individual characteristics and exhibit unique functions. The cleaning agent of the present invention is formed by suitably combining these components, satisfies the cleaning power to remove fine particles and oily deposits while suppressing foaming, and further suppresses foam scattering. However, the effect of satisfying the ease of wiping off the cleaning agent can be obtained. Such an effect is an effect that cannot be predicted from the individual characteristics and functions of each component, and is an effect that can be exhibited for the first time by combining a surfactant, alcohol, and water.

{Other ingredients}
The cleaning agent of the present invention can contain other components as necessary in addition to the surfactant, alcohol and water, as long as the stability in the formulation is not impaired. For example, if it is conventionally used for the washing | cleaning agent for vehicles, it can be used without a problem. Specifically, a fragrance | flavor, an antiseptic | preservative, a metal sequestering agent, a ultraviolet-ray shielding agent, a coloring agent, etc. are mentioned. One or more of these components are included in a range that does not adversely affect the surface of the vehicle such as the coating film, packing, and plastic part without impairing the foamability or foam persistence of the cleaning agent of the present invention. And can be contained as appropriate. Hereinafter, examples of other components will be described. However, in the cleaning agent of the present invention, other components are not limited to the following examples.

(Fragrance)
In the cleaning agent of the present invention, a fragrance can be contained for the purpose of improving the odor of alcohol and imparting a pleasant odor. From such a viewpoint, as a flavor that can be contained, β-pinene, peppermint oil, lemon oil, citral, citronellol, geraniol, linalool, linalyl acetate, laral, limonene, eugenol, l-menthol, camphor, γ-decalactone, etc. Can be mentioned. These fragrance | flavors can be used suitably individually or in combination.

(Preservative)
An antiseptic is a component that is included to prevent the cleaning agent from decaying and to enable the cleaning agent to be stably stored for a long period of time. Examples of the preservatives that can be contained in the cleaning agent of the present invention include aromatic hydroxy compounds, organic acid metal salts, benzoic acid, salicylic acid, parahydroxybenzoic acid esters, benzoisothiazionion and methylisothiazionion. be able to. These preservatives can be appropriately used alone or in combination.

(Metal sequestering agent)
The metal sequestering agent has an action (chelating action) for sequestering metal ions that affect detergency such as calcium ions, magnesium ions, iron ions, and copper ions. Examples of the sequestering agent that can be contained in the cleaning agent of the present invention include ethylenediaminetetraacetic acid (EDTA), hydroxyethyliminodiacetic acid (HIDA), dihydroxyethylglycine (DHEG), nitrilotriacetic acid (NTA), hydroxy Ethylethylenediaminetriacetic acid (HEDTA), diethylenetriaminopentaacetic acid (DTPA), triethylenetetraaminohexaacetic acid (TTHA), L-glutamic acid diacetic acid (GLDA), L-aspartic acid-N, N-diacetic acid (ASDA), 2-hydroxyethyliminodiacetic acid (HIMDA), gluconate, 3-hydroxy-2,2-iminodisuccinic acid (HIDS), hydroxyethanediphosphonic acid and part or all of the above composition or acid is an alkali metal, Things neutralized with ammonium etc. It is below. These metal sequestering agents can be appropriately used alone or in combination.

(UV shielding agent)
The ultraviolet shielding agent can be contained in order to prevent the cleaning agent from being deteriorated by ultraviolet rays by shielding ultraviolet rays. Examples of the ultraviolet shielding agent that can be contained in the cleaning agent of the present invention include salicylic acid-based, benzophenone-based, benzotriazole-based, and cyanoacrylate-based ultraviolet screening agents. These ultraviolet shielding agents can be appropriately used alone or in combination.

(Coloring agent)
The coloring agent can be contained so as to facilitate the distinction from water that may be confused when the vehicle is washed by coloring the cleaning agent. The colorant that can be contained in the cleaning agent of the present invention is not particularly limited as long as the cleaning agent can be colored. For example, Acid Red 138, Polar Red RLS, Acid Yellow 203, Acid Blue 9, Blue 1 , Blue No. 205, Green No. 3, and Turquoise P-GR (both trade names) can be used. These colorants can be used alone or in combination as appropriate.

[How to use cleaning agents]
Next, an aspect of the method for using the cleaning agent of the present invention will be described.

  The cleaning agent of the present invention suppresses foaming properties, but is used by foaming to improve the cleaning power. Examples of the foaming method include a foaming method in which a cleaning agent is caused to foam by passing a trigger spray nozzle or the like. Further, the cleaning agent can be directly foamed by being included in a cleaning instrument such as a mop or sponge.

  Next, the foamed cleaning agent as described above is adhered to the surface of the vehicle to dissolve the oily deposits, and the fine particles adhering to the surface are wrapped with foam. Then, the foam that dissolves the oil and wraps the fine particles is wiped from the surface of the vehicle by wiping with a mop or towel containing water.

  Since the cleaning agent of the present invention can prevent foam from being wiped off by suppressing foaming properties without reducing the cleaning power, the cleaning agent can be easily wiped off with water. As a result, the surface of the vehicle or the like can be sufficiently cleaned with a small amount of water. Moreover, scattering of bubbles can be suppressed.

[Production method of cleaning agent]
Next, one aspect of the method for producing the cleaning agent of the present invention will be described. It is preferable that the manufacturing place of the cleaning agent is a room temperature condition where there is no possibility that foreign matters are mixed. Then, for example, a surfactant, alcohol, and water are put into a container such as a tank, and stirred with a stirring blade or the like to make these components uniform, whereby a cleaning agent can be produced.

  The order in which these components are added is not particularly limited. For example, a surfactant and alcohol are introduced into a tank into which water has been added in advance, or all of the surfactant, alcohol and water are simultaneously introduced into the tank. be able to. Furthermore, if necessary, it can be produced in consideration of efficiency of production and production cost, such as preparing a mixture of water and alcohol in advance as an intermediate of the cleaning agent. In addition, there is no particular limitation on the method of charging these components, and after all these components are put into the tank, stirring is started and homogenized, and each component is stirred into the tank. Various methods can be taken, such as taking.

  The cleaning agent of the present invention produced as described above is appropriately used in consideration of the convenience of the user and improvement in the feeling of use, for example, by putting it in a spray container equipped with a nozzle for foaming the cleaning agent. It can be set as the suitable aspect of goods.

  If it is the cleaning agent of this invention demonstrated in the above, wiping off of a cleaning agent will become easy by suppressing foaming property, without reducing a cleaning power. As a result, with the cleaning agent of the present invention, the car can be washed with a small amount of water without washing the foam with running water using a hose or the like. Furthermore, since the scattering of bubbles can be suppressed, a large car wash space is not required.

  Hereinafter, based on an Example and a comparative example, this invention is demonstrated more concretely. However, the present invention is not limited to the following examples.

[Examination of surfactant content]
The surfactant content that can satisfy the cleaning performance as a cleaning agent, foaming property, wiping property of the cleaning agent, and the like was examined.

(Manufacture of cleaning agents)
In the production tank, the surfactant, isopropyl alcohol and ion-exchanged water were mixed so as to be uniform to produce a cleaning agent. The blending amount was 0.1% to 1.5% by mass of a surfactant as an active ingredient, 10% by mass of isopropyl alcohol, and the balance was ion-exchanged water. As a surfactant, polyoxyethylene tridecyl ether acetate Na (Burelite ECA: manufactured by Sanyo Chemical Industries, Ltd.) was used.

(Evaluation of cleaning performance)
The manufactured cleaning agent was put in a spray container equipped with a trigger and sprayed to attach a foamy cleaning agent to the test surface (spraying process). Next, water was wiped with a mop containing water, and the cleaning agent was wiped off from the test surface (wiping process). The mop containing dirt was rinsed with water drawn in a bucket, drained, and then the test surface was wiped using the mop (wiping process). The following evaluation indicators for the cleaning performance, ease of wiping, wiping residue, foaming, foam scattering, influence on the coating film, and the amount of water used for cleaning when removing dirt on the test surface by these processes Evaluation was performed. In addition, as a test surface, the metal part coating surface of the car which made dirt adhere by leaving it outside for one week after washing a car was used.
(1) Detergency ○: Oil is dissolved in the cleaning agent, and dirt such as dust is wrapped in foam.
(Triangle | delta): Oil content does not fully melt | dissolve in a cleaning agent, or dirt, such as dust, is not fully enclosed in foam.
X: The oil is not sufficiently dissolved in the cleaning agent, and dirt such as dust is not wrapped in the foam.
(2) Ease of wiping ○: The cleaning agent can be wiped off by one wiping operation, and no bubbles remain on the test surface.
(Triangle | delta): Although a cleaning agent can be wiped off, a bubble will remain on a test surface if it does not wipe off several times.
X: Even if the wiping operation is performed a plurality of times, it is difficult for the mop to sufficiently wipe off the cleaning agent, and bubbles remain on the test surface.
(3) Wiping residue ○: After the wiping process, there is no dirt such as oil or dust on the test surface, and no cleaning agent is left unwiped.
Δ: After the wiping process, some dirt such as oil or dust is recognized on the test surface, or a residue of the cleaning agent is slightly left.
X: After the wiping process, the test surface is recognized to the extent that dirt such as oil or dust is noticeable, or the cleaning agent is left to the extent that it is noticeable.
(4) Foaming The state of foam of the cleaning agent sprayed and adhered to the test surface was evaluated in 10 stages. In the evaluation, the smaller the value is, the more bubbles are not generated. 0 is a state where no bubbles are generated, and 10 is a state where the bubbles are meringue.
0-3: There are few bubbles.
4-6: Bubbles are formed and bubbles do not scatter around the test surface.
7 to 10: There are many bubbles, and bubbles are scattered around the test surface.
(5) Spattering of bubbles The state in which the foam of the cleaning agent was scattered in the wiping process was evaluated according to the following criteria.
○: No bubbles are scattered by wiping.
Δ: Foam slightly scattered around the test surface by wiping.
×: Many bubbles are scattered around the test surface by wiping.
(6) Effect on coating film ◯: There is no change in the coating film on the test surface.
Δ: Some changes such as discoloration, blistering, and peeling are observed in the coating film on the test surface.
X: Changes such as discoloration, swelling and peeling are clearly observed in the coating film on the test surface.
(7) Amount of water used for cleaning In the evaluation of cleaning performance, the amount of water used for cleaning was evaluated according to the following criteria.
◯: One cup of water with a capacity of 30L is sufficient.
Δ: At least three buckets of water with a capacity of 30 L are required.
X: Use of a bucket is not sufficient, and it is necessary to wash with running water using a hose or the like.

(Evaluation results)
The evaluation results are shown in Table 1.

  From Table 1, the detergent having a surfactant concentration of 0.3% by mass to 0.75% by mass is cleanable, easy to wipe off, wiped residue, foaming, foam scattering, influence on the coating film and cleaning. In each evaluation of the amount of water used for each, good results were shown (Examples 1 to 3).

  On the other hand, when the concentration of the surfactant is 0.1% by mass, there are few bubbles, dirt such as dust is not sufficiently encapsulated in the foam, and there is some dirt on the test surface after the wiping process. (Comparative Example 1).

  In addition, when the concentration of the surfactant is 1.0% by mass or more, the cleaning property is satisfied, but because there are a lot of bubbles, the wiping work is laborious, and the cleaning agent is wiped after the wiping process. A residue was observed (Comparative Examples 2 and 3). Furthermore, in Comparative Example 3, slight discoloration was observed in the coating film on the test surface, and bubbles were scattered around the test surface.

[Examination of alcohol]
The type and content of alcohol that can satisfy the cleaning performance as a cleaning agent, foaming property, wiping property of the cleaning agent, and the like were examined.

(Manufacture of cleaning agents)
In the production tank, the surfactant, alcohol and ion-exchanged water were mixed so as to be uniform to produce a cleaning agent. The compounding amount was 0.3% by mass of surfactant as an active ingredient, 1% by mass to 20% by mass of alcohol, and the balance was ion-exchanged water. As alcohol, isopropyl alcohol (IPA), n-propyl alcohol (NPA), ethanol (EtOH) and methanol (MeOH) were used. Moreover, polyoxyethylene tridecyl ether acetate Na (Burelite ECA: Sanyo Chemical Industries Ltd. make) was used as a surfactant.

(Evaluation of cleaning performance)
The cleaning properties of the cleaning agent, ease of wiping, wiping residue, foaming, and influence on the coating film were evaluated using the evaluation indexes described above.

(Evaluation results)
The evaluation results are shown in Table 2.

  From Table 2, a cleaning agent having an alcohol concentration of 1.0 mass% to 10.0 mass% is used for cleaning performance, ease of wiping, wiping residue, foaming, foam scattering, influence on coating film and cleaning. In each evaluation of the amount of water produced, all showed good results (Examples 4 to 9).

  On the other hand, the detergent having an alcohol concentration of 0.5% by mass was able to wrap dirt such as dust with foam with a surfactant, but the oil was not sufficiently dissolved and the cleaning property was not satisfied. (Comparative Example 4). Furthermore, since the oil component was not sufficiently dissolved, the oil surface was slightly contaminated on the test surface after the wiping process, and the evaluation of the wiping residue was not satisfied (Comparative Example 4).

  In addition, although the cleaning agent having an alcohol concentration of 20.0% by mass satisfied cleaning properties, ease of wiping, wiping residue and foaming, peeling of the coating film on the test surface was observed (Comparative Example 5).

[Examination of surfactant]
The types of surfactants that can satisfy the cleaning performance as a cleaning agent, the foaming property, the wiping property of the cleaning agent, and the like were examined. Table 3 shows the names of the surfactants used.

(Manufacture of cleaning agents)
In the production tank, the surfactant shown in Table 3, isopropyl alcohol and ion-exchanged water were mixed so as to be uniform to produce a cleaning agent. The blending amount was 0.5% by mass of a surfactant as an active ingredient, 10% by mass of isopropyl alcohol, and the balance was ion-exchanged water.

(Evaluation of cleaning performance)
The cleaning performance of the cleaning agent, ease of wiping, wiping residue, foaming, foam scattering, influence on the coating film and the amount of water used for cleaning were evaluated by the above-described evaluation indices. The compatibility evaluation index was as follows.
(8) Compatibility ○: There is no white turbidity of the cleaning liquid, and it is transparent.
Δ: The cleaning liquid is transparent but slightly cloudy.
X: The cleaning liquid is clearly cloudy and has no transparency.

(Evaluation results)
The evaluation results are shown in Table 4. In the columns of (1) to (8) in Table 4, (1) cleanability, (2) ease of wiping, (3) wiping residue, (4) foaming, (5) foam scattering, ( 6) The effect on the coating film, (7) the amount of water used for washing, and (8) the results of the compatibility evaluation were shown.

  From Table 4, among the anionic, amphoteric and nonionic surfactants, polyoxyethylene lauryl ether acetate Na, polyoxyethylene tridecyl ether acetate Na, polyoxyethylene lauryl ether sulfate Na, N-coconut oil fatty acid acyl-L -Glutamic acid TEA, N-coconut oil fatty acid acyl-N'-carboxyethyl-N'-hydroxyethylethylenediamine Na, 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, coconut oil fatty acid amidopropyl betaine, Detergents using any one of the polyglyceryl caprate-10 and polyglyceryl laurate 10 detergents can be used for cleaning, ease of wiping, wiping residue, foaming, splashing of bubbles, effects on coating films, and cleaning. Each amount of water used and compatibility In all showed good results (Example 10-18).

  On the other hand, among anionic surfactants, a detergent using Na lauryl sulfate, ammonium lauryl sulfate, N-lauroyl-L-aspartate Na and N-coconut oil fatty acid acyl-L-glutamic acid K satisfies the detergency. However, due to the large amount of foam, the foam was scattered around the test surface, and the wiping work was labor intensive, and the remaining cleaning agent after the wiping process was slightly recognized (Comparative Examples 6-8, 10). ). The cleaning agent using N-coconut oil fatty acid acyl-L-glutamic acid Na was excellent in compatibility and good in cleaning property and ease of wiping, but slight discoloration was observed in the coating film on the test surface. (Comparative Example 9). Further, in Comparative Examples 6, 8 and 9, slight discoloration was observed in the coating film on the test surface (Comparative Examples 6, 8 and 9).

  Among amphoteric surfactants, lauryl hydroxysulfobetaine, lauryldimethylamine oxide, decyldimethylamine oxide, N-lauroyl-N′-carboxymethyl-N′-hydroxyethylethylenediamine Na, lauric acid amidopropyl betaine were used. Although the cleaning agent showed good results in compatibility, foaming, cleaning properties, ease of wiping and wiping residue, some discoloration of the coating film on the test surface was observed (Comparative Examples 11 to 15).

  Among the nonionic surfactants, polyglyceryl-5 laurate, polyglyceryl-2 laurate, polyglyceryl-10 trilaurate, polyoxyethylene stearyl ether (HLB (hydrophilic hydrophobic balance): 6), polyoxyethylene stearyl Detergents using ether (HLB: 8), polyoxyethylene stearyl ether (HLB: 9), polyoxyethylene stearyl ether (HLB: 11) have few bubbles or no bubbles at all. Dirt was not sufficiently encapsulated in the foam, and some stain was observed on the test surface after the wiping process (Comparative Examples 16 to 22). In particular, the cleaning agents of Comparative Examples 17 to 21 were inferior in compatibility, and liquid turbidity was observed. Moreover, discoloration and peeling of the coating film were recognized for the cleaning agents of Comparative Examples 17 and 19-22.

  In addition, the detergent using lauryltrimethylammonium chloride as a cationic surfactant was excellent in compatibility and good in cleaning properties and ease of wiping, but discoloration was observed in the coating film on the test surface ( Comparative Example 23).

[Study on formulation of detergents using two or more surfactants]
Based on the results of study on the above surfactants and alcohols, the formulation of cleaning agents using two or more surfactants was examined.

(Manufacture of cleaning agents)
As shown in Table 5, the detergent, isopropyl alcohol and ion-exchanged water were mixed uniformly using a production tank to produce a cleaning agent.

(Evaluation of cleaning performance)
The above-described evaluation indicators were used to evaluate the cleaning properties, ease of wiping, wiping residue, foaming, foam scattering, influence on the coating film, amount of water used for cleaning, and compatibility.

(Evaluation results)
The evaluation results are shown in Table 5. An example using the cleaning agent described in the problem to be solved by the invention was defined as Conventional Example 1 below, and was similarly evaluated in Table 5.

(Conventional example 1)
A detergent and water were put into the bucket, and the mixture was mixed well to make foam, creating a cleaning solution with plenty of foam. Next, water was applied to the surface of the test surface to remove mud and sand, and then the surface of the test surface was washed with a sponge soaked in a cleaning solution with a force that would slightly collapse the sponge. After washing, the foam on the test surface was washed away with running water using a hose or the like. Thereafter, water drops remaining on the test surface were wiped off with a towel.

  About the evaluation of the prior art example 1 shown in Table 5, it evaluated by the same index as the evaluation index described in the above (evaluation of cleaning performance). Here, “easiness of wiping” evaluated the ease of wiping when the foam on the test surface was washed away with running water and then wiped up with a towel. The “wiping residue” was evaluated for the degree of stain on the test surface after wiping with a towel and the degree of wiping residue of the cleaning agent. “Bubbling” was evaluated for the state of foam when a detergent and water were put in a bucket and stirred well to cause foaming. “Bubble scattering” was evaluated for the state in which bubbles of the cleaning agent were scattered when the surface of the test surface was washed with a sponge containing a cleaning solution.

  Here, the cleaning agent of Conventional Example 1 is used by mixing with water and foaming, and 5% by mass of sodium polyoxyethylene alkylsulfate having a high foaming property as a surfactant and an alkyl as a foaming agent. It contains 1% by mass of amine oxide and contains pure water and the like.

  Based on polyoxyethylene lauryl ether acetate Na, polyoxyethylene lauryl ether sulfate Na, N-coconut oil fatty acid acyl-N′-carboxyethyl-N′-hydroxyethylethylenediamine Na, laurylamine oxide and polyglyceryl laurate-10 Appropriate combinations show good results in each evaluation of detergency, ease of wiping, wiping residue, foaming, foam scattering, influence on coating film, amount of water used for cleaning and compatibility. (Examples 19 to 21). Moreover, it is good also by combining N-lauroyl-L-aspartate Na as a base, and N-coconut oil fatty-acid acyl-N'-carboxyethyl-N'-hydroxyethylethylenediamine Na and polyglyceryl-10 laurate suitably. It was able to be set as the cleaning agent which exhibits performance (Examples 22 and 24).

  In particular, polyoxyethylene lauryl ether Na and N-lauroyl-L-aspartate Na are used in combination, and N-coconut oil fatty acid acyl-N′-carboxyethyl-N′-hydroxyethylethylenediamine Na and polyglyceryl-10 laurate are used. In combination, the amount of water required was about 50 to 80% compared to other examples, and the test surface could be cleaned and wiped with a smaller amount of water (Example 23).

  On the other hand, even when N-lauroyl-L-aspartate Na is a base, the cleaning agent containing Na lauryl sulfate Na has satisfactory detergency. Results were obtained (Comparative Examples 24 and 25).

  Further, when the cleaning agent of Conventional Example 1 was used, good results were shown in the evaluation of the cleaning property, the ease of wiping, the wiping residue and the influence on the coating film. However, in the evaluation of foaming, there were many foams, and the foams were ejected from the bucket and scattered around the test surface. And in the evaluation of the scattering of bubbles, when the surface of the test surface was washed, a lot of bubbles were scattered around the test surface. Further, in the evaluation of the amount of water used, a lot of water was used because the foam on the test surface was washed away with running water.

[Summary]
From the above results, the cleaning agent of the present invention facilitates wiping of the cleaning agent by suppressing foaming properties without reducing the cleaning power. Further, as a result of suppressing the foaming property, the cleaning agent can be easily wiped off. And it is possible to wash the car with a small amount of water without rinsing the foam with running water using a hose or the like. Furthermore, since the scattering of bubbles can be suppressed, a large car wash space is not required. As a result, the cleaning agent of the present invention can sufficiently clean the surface of a vehicle or the like with a small amount of water. Moreover, the use of the cleaning agent of the present invention is not limited to the cleaning of the surface of a vehicle or the like, and can also be applied to a signboard, an outer wall of a building, a glass surface, and the like.

  As mentioned above, although preferred embodiment of this invention was described in detail, this invention is not limited to this example. It is obvious that a person having ordinary knowledge in the technical field to which the present invention pertains can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that these also belong to the technical scope of the present invention.

  The cleaning agent of the present invention is industrially useful because the vehicle can be sufficiently cleaned with a small amount of water.

Claims (5)

A surfactant,
Alcohol and
A detergent containing water and
The surfactant is
Sodium polyoxyethylene lauryl acetate, sodium N-lauroyl-L-aspartate, N-coconut oil fatty acid acyl-N′-carboxyethyl-N′-hydroxyethylethylenediamine sodium, polyglyceryl-10 laurate, polyoxyethylene lauryl ether 2 or more types selected from sodium sulfate and laurylamine oxide, or sodium polyoxyethylene lauryl ether acetate, sodium polyoxyethylene tridecyl ether acetate, sodium polyoxyethylene lauryl ether sulfate, N-coconut oil fatty acid acyl-L-glutamic acid Triethanolamine, N-coconut oil fatty acid acyl-N′-carboxyethyl-N′-hydroxyethylethylenediamine sodium, 2-alkyl-N-carbo Shimechiru -N- hydroxyethyl imidazolinium betaine, coconut oil fatty acid amide propyl betaine is one or more selected from polyglyceryl caprate -10 and lauric acid polyglyceryl-10 detergent.   The detergent according to claim 1, wherein the content of the surfactant is 0.2% by mass to 0.8% by mass.   The cleaning agent according to claim 1 or 2, wherein the alcohol is at least one selected from methanol, ethanol, normal propanol, and isopropanol.   The cleaning agent according to any one of claims 1 to 3, wherein the alcohol content is 0.5 mass% to 15 mass%. The surfactant comprises sodium polyoxyethylene lauryl ether acetate, sodium N-lauroyl-L-aspartate, N-coconut oil fatty acid acyl-N′-carboxyethyl-N′-hydroxyethylethylenediamine sodium and polyglyceryl-10 laurate. Become
The said alcohol is a cleaning agent of any one of Claims 1-4 which is isopropanol.