JP2012057048A - Vehicle detergent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle detergent which has a good foaming property and excellent foam durability.SOLUTION: The vehicle detergent is characterized by including at least surfactants which are made by either one of or both of alkyl sulfate salt (carbon number of alkyl group is 8-18) and polyoxyethylene alkyl ether sulfate salt (carbon number of alkyl group is 8-18); higher alcohol of 12-16 carbons, and/or higher fatty acid of 12-16 carbons; and water.

Description

  The present invention relates to a vehicle cleaning agent for cleaning various types of dirt on the surface of a vehicle represented by an automobile.

  On the painted surface of a vehicle such as an automobile, dirt such as dust, soot, oil particles, and dust in the atmosphere adheres. The surface of the vehicle is often washed to wash away these dirt adhering to the surface. In addition, depending on the deposits, the coating on the vehicle surface may be roughened, and when applying wax to protect the coating, it is necessary to remove the deposit on the surface. , Often washed.

  In order to clean the vehicle, to remove oily deposits that are stuck, and to enclose the fine particles with foam in order to prevent the surface of the paint film from being damaged by fine particles such as sand dust, cleaning with a surfactant, etc. A cleaning agent (shampoo) containing the components is 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 surface is required. Many cleaning agents have been proposed and are commercially available (see, for example, Patent Document 1).

  Vehicle cleaning agents are used for car washing after being foamed during use. If the vehicle is washed with a non-foamed cleaning solution, fine particles such as dust existing on the vehicle surface may be dragged by a cleaning tool such as a sponge, and innumerable fine scratches may be formed on the painted surface of the vehicle. Therefore, there is a demand for a detergent having good foaming properties (foaming) and high foam persistence.

  The foaming property can be dealt with by increasing the amount of surfactant added, but it is preferable because the rinsing property is lowered and the effect on the painted surface is concerned and the cost is increased. Absent. On the other hand, no special measures have been taken with regard to the persistence of foam, and the current situation is that the user is foaming each time with a sponge or the like at the time of car washing, and the user is forced to make efforts.

Japanese Patent Laid-Open No. 10-147794

  Therefore, an object of the present invention is to provide a vehicle cleaning agent having good foaming properties and high foam sustainability.

  The above object is achieved by the present invention described below. That is, the present invention includes at least one of an alkyl sulfate (the alkyl group has 8 to 18 carbon atoms) and a polyoxyethylene alkyl ether sulfate (the alkyl group has 8 to 18 carbon atoms) or both surfactants. A vehicle cleaning agent comprising a higher alcohol having 12 to 16 carbon atoms and / or a higher fatty acid having 12 to 16 carbon atoms and water.

  As the surfactant, alkyl sulfate (alkyl group having 8 to 18 carbon atoms) and / or polyoxyethylene alkyl ether sulfate (alkyl group having 8 to 18 carbon atoms) is used. By adding a higher alcohol and / or a higher fatty acid having 12 to 16 carbon atoms, the resulting detergent has extremely good foaming properties, and the resulting foam is firm and excellent in sustainability. For this reason, once foamed, there is almost no need to foam again during the car wash.

  Therefore, for example, it is possible to wash the foam of the cleaning agent once bubbled in the bucket by a method of scouring the car through the car wash and providing it to the car wash, thereby reducing the burden on the user when washing the car. In addition, unlike regular detergent foam, it is firm and durable, so it wraps the painted surface of the vehicle with foam and gently cleans the foam to take up fine particles such as dust on the surface. It is possible to suppress the concern of causing fine scratches on the painted surface of the vehicle. Furthermore, since the foaming is good, the amount of the surfactant used can be reduced, and the rinsing property is not impaired.

  In the vehicle cleaning agent of the present invention, the blending ratio {(surfactant): (higher alcohol and / or higher fatty acid)} of the surfactant and the higher alcohol and / or higher fatty acid is on a mass basis. It is preferable to be in the range of 3: 1 to 100: 1.

  ADVANTAGE OF THE INVENTION According to this invention, the foaming agent with favorable foaming property and the persistence of foam can be provided.

  In the vehicle cleaning agent of the present invention, a surfactant, a higher alcohol and / or a higher fatty acid, and water are essential components, and other components are included as necessary. Hereinafter, the present invention will be described in detail for each component.

<Water>
In the present invention, water is used as a solvent for maintaining each main component described later in a stable dissolved or dispersed state. There is no restriction | limiting in particular about the water used at this time, 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 enhance the storage stability as a vehicle cleaning agent, it is preferable to contain no impurities as much as possible. Therefore, pure water and deionized water are preferable, but even tap water, industrial water or groundwater is generally stored. Since it does not have a great influence on the performance, it can be used.

<Surfactant>
In the vehicle cleaning agent of the present invention, either or both of alkyl sulfate and polyoxyethylene alkyl ether sulfate are used as a surfactant. Moreover, you may use another surfactant as needed.

(Alkyl sulfate)
As carbon number of the alkyl group in the alkyl sulfate used by this invention, the thing of 8-18 is used, and 12-16 are preferable. If the carbon number is too large, the solubility in water decreases, and if it is too small, the detergency becomes weak, which is not preferable.

  The alkyl group in the alkyl sulfate used in the present invention may be linear or branched, but is generally linear.

  Examples of the alkyl sulfate used in the present invention include sodium salt, potassium salt, ammonium salt, triethanolamine salt, diethanolamine salt, and monoethanolamine salt, and are not particularly limited.

  Specific examples of preferred alkyl sulfates for the present invention include ammonium lauryl sulfate, sodium lauryl sulfate, triethanolamine lauryl sulfate, and other sodium alkyl sulfates having 8 to 18 carbon atoms.

(Polyoxyethylene alkyl ether sulfate)
The polyoxyethylene alkyl ether sulfate used in the present invention is a polyethylene oxide adduct of alkyl sulfate, and the alkyl sulfate portion is the same as that described in the above section (alkyl sulfate), and a preferred embodiment Is the same, and redundant explanation is omitted.

  The number of ethylene oxide units in the polyethylene oxide portion is preferably 1 or more and 10 or less per molecule, and more preferably 1 or more and 4 or less. When the number of ethylene oxide units increases, it becomes easy to dissolve in water, but it is difficult to remove oil stains.

  Specifically, preferred polyoxyethylene alkyl ether sulfates for the present invention include polyoxyethylene (2) ammonium lauryl ether sulfate, polyoxyethylene (3) sodium lauryl ether sulfate, polyoxyethylene (3) lauryl ether sulfate triethanolamine. Etc.

  Either one or both of the alkyl sulfate and the polyoxyethylene alkyl ether sulfate may be used.

(Other surfactants)
In the present invention, the above-mentioned surfactant is an essential constituent, but other anionic surfactants, various amphoteric surfactants, and nonionic surfactants may be used in combination as appropriate, and can be washed. The optimum combination may be selected as appropriate in consideration of the diversity of contaminating components and the improvement of detergency due to a synergistic effect.

  Specific examples of preferable anionic surfactants that can be used include linear alkylbenzene fatty acid salts, higher alkylbenzene sulfonates, fatty acid salts (soaps), N-sarcosine salts, acylated polypeptides, and lignin sulfonates. N-acylalkyl taurate, ether carboxylate, n-paraffin sulfonate (SAS), sulfosuccinate, isethionate, α-olefin sulfonate (AOS), alkyl phosphate ester, zinc dialkyldithiophosphate Examples of the anionic surfactant include, but are not limited to, an anionic surfactant containing a fluorinated hydrocarbon group.

  Specific examples of preferable amphoteric surfactants that can be used include alkyldimethylamine oxide, alkylhydroxyethylamine oxide, alkyldimethylbetaine, alkylhydroxyethylbetaine, alkylcarboxymethylhydroxyethylimidazolinium betaine, and amino acid-type amphoteric surfactants. Surfactants, fatty acid amidoamine oxides, amphoteric surfactants containing a fluorinated hydrocarbon group in the amphoteric surfactants, and the like are exemplified, but are not limited thereto.

  Specific examples of preferable nonionic surfactants that can be used include ethylene oxide-added alkylphenol (APE), ethylene oxide-added higher alcohol (AE), sucrose fatty acid ester, polyoxyethylene-added polyoxypropylene glycol, Alkanolamine-fatty acid condensate, alkyl alkanolamide, polyoxyethylene alkyl ether, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene polyoxypropylene glycol, alkyl glyceryl ether, polyoxyethylene glycol fatty acid ester, polyoxyethylene hardened castor Oil, palm oil fatty acid ester, glycerin fatty acid ester, propylene glycol fatty acid ester, sorbitan fatty acid ester, polio Shi sorbitan fatty acid esters, polyoxyethylene sorbit tetraoleate, although non-ionic surfactant and the like containing a fluorinated hydrocarbon group in the nonionic surface active agents, but is not limited thereto.

<Higher alcohol and / or higher fatty acid>
In the vehicle cleaning agent of the present invention, either one or both of higher alcohol and higher fatty acid is used.

(Higher alcohol)
The higher alcohol used in the present invention has 12 to 16 carbon atoms, and among them, myristyl alcohol having 14 carbon atoms is most preferable. The carbon-carbon bond may include an unsaturated bond or all may be a saturated bond.

  Specifically, higher alcohols preferred in the present invention include lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, oleyl alcohol, linoleyl alcohol and the like.

(Higher fatty acid)
The higher fatty acid used in the present invention has 12 to 16 carbon atoms, and among them, those having 14 to 16 carbon atoms are preferable. The carbon-carbon bond may include an unsaturated bond or all may be a saturated bond.

  Specific examples of higher fatty acids preferred in the present invention include myristic acid, palmitic acid, stearic acid, oleic acid and the like.

  Any one or both of these higher alcohols and higher fatty acids may be used. Of these, higher alcohols are excellent in both foamability and foam persistence, and higher alcohols are preferably used mainly, and higher alcohols alone are more preferable.

  The blending amount of these higher alcohols and / or higher fatty acids is discussed in terms of the blending ratio with the alkyl sulfate and / or polyoxyethylene alkyl ether sulfate, which are the surfactants essential for the present invention described above. The blending ratio {(surfactant): (higher alcohol and / or higher fatty acid)} of these essential surfactants and higher alcohol and / or higher fatty acid is in the range of 3: 1 to 100: 1 on a mass basis. It is preferably within the range of 5: 1 to 30: 1, more preferably within the range of 6: 1 to 20: 1.

  If the blending ratio of the higher alcohol and / or higher fatty acid is too large with respect to the surfactant, these may not be dissolved in water from the beginning, so that foaming may be reduced. Since there is a case where the foam does not come out and the sustainability of the foam is not sufficient, each is not preferable.

<Other ingredients>
In addition to the above components, the vehicle cleaning agent of the present invention may contain other components as needed within a range not impairing the stability in the prescription. For example, as long as it is conventionally used for vehicle cleaning agents, it can be used without any problem. Specifically, metal sequestering agents, abrasives, water repellent components, preservatives, water-soluble solvents, In the range that does not adversely affect the paint surface without impairing foaming property or sustainability of foam, such as UV shielding agents, alkali agents, builders, thickeners, colorants, fragrances and bactericides. It is possible to add appropriately.

  Examples of sequestering agents that can be added include ethylenediaminetetraacetic acid (EDTA), hydroxyethyliminodiacetic acid (HIDA), dihydroxyethylglycine (DHEG), nitrilotriacetic acid (NTA), hydroxyethylethylenediaminetriacetic 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), hydroxyethane diphosphonic acid, and part or all of the above composition or acid were neutralized with alkali metal, ammonium, etc. Such as, but not limited to Not.

  Examples of preservatives that can be added to the vehicle cleaner of the present invention include aromatic hydroxy compounds, metal salts of organic acids, benzoic acid, salicylic acid, parahydroxybenzoic acid esters, benzoisothiazionion, methylisothiazionion, and the like. It is done.

  Examples of the ultraviolet shielding agent that can be added include salicylic acid-based, benzophenone-based, benzotriazole-based, and cyanoacrylate-based ultraviolet shielding agents.

  In addition, glycols such as ethylene glycol can be added to the vehicle cleaning agent of the present invention for the purpose of liquid stability against freezing at low temperatures.

It is also preferable to add glycerin, saccharides, and derivatives other than dehydrated saccharide derivatives to the vehicle cleaning agent of the present invention in order to improve rinsing properties. In general, “saccharide” is represented by the following general formula A,
C _n H _2m O _m [n and m are each independently a positive integer. ] General formula A
In the present invention, the term “saccharide” is a concept including not only those represented by the above general formula A but also polyhydroxy analogs of aldehydes and ketones and dehydration condensates thereof as analogs thereof. Specific examples of the derivative include a reduced derivative and an oxidized derivative. The saccharide derivatives do not include dehydrated derivatives. The reason for this is that the number of hydroxyl groups is decreased by the dehydration reaction, the water retention is lowered, and the expected rinsing effect may not be sufficiently exhibited.

  Examples of the saccharide that can be used in the present invention include those represented by the above general formula A, monosaccharides as the polyhydroxy homologue, and oligosaccharides and polysaccharides as dehydration condensates thereof. Examples of saccharide derivatives that can be used in the present invention include reduced alcohol derivatives such as sugar alcohol, deoxy sugar, and glycal, and oxidized derivatives such as aldonic acid, uronic acid, and sugar acid, respectively, and other inositol and amino sugars. And thio sugar.

  Specific examples of sugar alcohols that can be used include erythritol (threitol, trait), arabinitol (arabit, arabitol), xylitol (xylit), adonitol (ribitol, ribit), sorbitol (sorbitol, glucit, glucitol), mannitol (man Knit), iditol (exit), taritol (talit), allitol (arit), dulcitol (dulcit, galactitol), etc., and other monosaccharide alcohols such as inositol (inosit), maltitol, isomalitol, lactitol, maltotrii Examples thereof include oligosaccharide (multiple sugar) alcohols such as tol, isomaltoritol and panitol.

  Among these, oligosaccharide (multiple sugar) alcohols are preferable, and disaccharide or trisaccharide sugar alcohols are particularly preferable. Even monosaccharides have sufficient rinsing properties, but disaccharides or trisaccharides have better rinsing properties, and more than tetrasaccharides, the viscosity gradually increases, and cleaning operations may be difficult.

  As addition amount of saccharides etc., it is preferable to set it as 1.0 mass% or more with respect to the vehicle cleaning agent whole quantity at the time of use (car wash), and it is set as the range of 3.0-50.0 mass%. More preferred. When the addition amount of saccharides or the like is reduced, it is not possible to expect the effect of improving the rinsing property.

The vehicle cleaning agent of the present invention can contain an abrasive so that it can be used as a water scrub cleaning agent.
As the polishing agent, a conventionally known material that can be used as a polishing agent for the water scrub cleaning agent can be used without any problem.

  Specifically usable abrasives include silicon oxide; silicate metal salts such as calcium silicate, magnesium silicate, strontium silicate, aluminum silicate, barium silicate, zirconium silicate, magnesium magnesium metasilicate; calcium carbonate, magnesium carbonate, carbonic acid Metal carbonates such as cobalt; Tungstic metal salts such as calcium tungstate; Metal oxides such as aluminum oxide, zirconium oxide, cobalt oxide and α-iron oxide; Metal hydroxides such as hydrated iron oxide; Other synthetic zeolites Inorganic powders such as porous powders such as natural zeolite and diatomaceous earth; silicon nitride; silicon carbide;

Moreover, what has a function as a photocatalyst with the function as an abrasive | polishing agent can also be used conveniently. Specifically, TiO ₂ , SrTiO ₃ , KTiO ₃ , SnO ₂ , Nb ₂ O ₅ , WO ₃ , Fe ₂ O ₃ , Bi ₂ O ₃ , FeTiO ₃ , ZnO, CdO, MoS ₂ , Si, SiO ₂ , Examples thereof include powders having a photocatalytic effect such as CeO ₂ and ZrO ₂ .

  Since these abrasives are naturally water-insoluble due to their functions, it is preferable to use a dispersant for dispersing the abrasive in combination for the liquid stability of the resulting vehicle cleaning agent. Specific examples of the dispersant that can be used include water-soluble polyacrylates (sodium salts, ammonium salts, etc.), polyphosphoric acid and salts thereof, condensed naphthalene sulfonates (sodium salts, ammonium salts, etc.), and the like. And water-insoluble dispersants such as vinyl polymers, modified polyesters, aliphatic alcohol sulfates and salts thereof.

In this invention, it is preferable to set it as the range of 0.1-25.0 mass% with respect to the vehicle cleaning agent whole quantity at the time of use (car wash) as addition amount of an abrasive | polishing agent, and 1.0-10. A range of 0% by mass is more preferable. If the addition amount of the abrasive is reduced, the water scavenging effect obtained by adding the abrasive will not be exhibited. Conversely, if the addition amount is increased, the coating surface is affected, which is not preferable.
When an abrasive dispersant is added, the addition amount is preferably in the range of 5.0 to 100% by mass with respect to the total amount of the abrasive to be added, and 15.0 to 50.0 mass. % Is more preferable.

<Concentration of vehicle cleaner>
In general, vehicle cleaners are formulated with the essential ingredients and optional ingredients described above, but they are distributed, traded in the market, and are traded, transported and stored in a concentrated state until they reach the user. The In actual use, this is diluted by the user until the recommended dilution factor is reached and used for washing the vehicle.

  The vehicle cleaning agent of the present invention can also be made into a concentrated state in consideration of liquid stability, production suitability, and composition ratio, and stored in an appropriate container for transaction, transportation, and storage. In particular, in the present invention, in view of the method of use described later, it is desirable that it is in a moderately concentrated state until it is used.

  The concentration of the alkyl sulfate and the polyoxyethylene alkyl ether sulfate during use of the vehicle cleaning agent of the present invention is selected from the range of about 0.05% by mass to 0.5% by mass. From the viewpoint of foamability and foam persistence, a concentration of about 0.15% by mass is optimal, and the recommended dilution ratio of the concentrated solution may be determined so as to achieve such an optimal concentration.

  The concentration of the alkyl sulfate and polyoxyethylene alkyl ether sulfate at the time of concentration of the vehicle cleaning agent of the present invention may be determined in consideration of the liquid stability, the production suitability, and the composition ratio as described above. However, what is necessary is just to select from the range used as about 2 mass%-30 mass%.

<How to use vehicle cleaner>
The vehicle cleaning agent of the present invention described above is foamed during use (car wash).
When the concentration is already usable, it may be encapsulated in some kind of container and shaken or stirred vigorously, or it may be bubbled directly in a sponge. Since the vehicle cleaning agent of the present invention has high foamability and foam persistence, it can achieve high foamability and long foam persistence even in normal use.

  As a particularly preferred method of using the vehicle cleaning agent of the present invention, in order to fully utilize its high foaming property, a large amount of foam is produced in advance, and then the foam is made into a porous body such as a sponge or cloth or a brush. It is preferable to scoop it up with a car wash tool such as for use in washing the vehicle. For that purpose, it is desirable that the vehicle cleaning agent of the present invention is in a concentrated liquid state.

  The vehicle cleaning agent of the present invention in the state of the concentrated liquid is taken in a container such as a bucket, and a large amount of foam can be produced by supplying water thereto at a high water pressure. The water pressure may be increased by attaching a jet nozzle to the end of the hose, may be increased by sandwiching the tip of the hose with a finger, or simply opening the tap faucet (preferably fully open). . Thus, just by supplying water at a high pressure, the vehicle cleaning agent of the present invention produces a large amount of bubbles due to its high foaming property.

  In addition, since the vehicular cleaning agent of the present invention has extremely high foam persistence, the foam once set is maintained throughout the car wash, and can be washed while scooping the foam. Of course, depending on various conditions such as car wash time, foam formation, and blending and concentration, there is a possibility that the foam will not last until the end of the car wash. High maintainability. Therefore, the user's labor required for car washing can be reduced.

  The vehicle cleaning agent of the present invention is foamed as described above, rubbed against the painted surface of the vehicle, washed, and then washed away with water. Then, water drops are removed as necessary, and the cleaning operation is completed. Further, if necessary, a durable glossy surface can be obtained by waxing, but if the used water-repellent component is included in the used vehicle cleaning agent, the waxing is not performed. A durable glossy surface is obtained.

Hereinafter, the present invention will be described more specifically with reference to examples.
<Examples 1-15>
The vehicle components of Examples 1 to 15 were prepared by dispersing or mixing the composition components in the formulations shown in Table 1 below.

* 1: The number of ethylene oxide units is 2 per molecule. * 2: The number of ethylene oxide units is 3 per molecule. * 3: Newlex R (manufactured by NOF Corporation). Is added in terms of solid content), and the alkyl group carbon number in the linear sodium alkylbenzene sulfonate is 10 to 16
* 4: Persoft SK manufactured by NOF Corporation (product is 30% aqueous solution. Addition in terms of solid content when blended), carbon number of alkyl group in sodium alkyl sulfate is 8-18
* 5: One-to-one condensate of coconut oil fatty acid and diethanolamine.
* 6: The specific composition (mass basis) of sugar alcohol (trade name: Amamiru, Towa Gosei Kogyo) is as follows.
Maltitol (monosaccharide): 46-49%
D-sorbitol (disaccharide): 32-41%
Maltotriitol (trisaccharide): 5-13%
Oligosaccharide alcohol (tetrasaccharide): 4-10%
* 7: The blending amount “BL” of ion-exchanged water is an abbreviation for balance, and the total amount is 100 parts by mass (remainder).

<Comparative Examples 1-6>
Each vehicle cleaning agent of Comparative Examples 1 to 6 was prepared by dispersing or mixing the composition components in each formulation not including saccharides shown in Table 2 below.

* 1 to * 7 in Table 2 are the same as those in Table 1 in the examples.

<Evaluation test>
Using the obtained vehicle cleaners of Examples 1 to 15 and Comparative Examples 1 to 6, each evaluation test of the evaluation items shown below was performed. The results are summarized in Table 3 below.

(1) Foaming (foaming property)
Put 40ml of each vehicle cleaning agent in a 10 liter bucket, fully open the tap from the height of 40cm from the ground to the faucet, put in tap water, and visually observe the foaming at that time, The evaluation index shown below was used for evaluation.
A: Very good foaming.
○: Satisfactory foaming.
Δ: Foaming is not a satisfactory amount of foam.
X: It does not foam.

(2) Sustainability of foam 40 ml of each vehicle cleaning agent is put in a 10 liter bucket, diluted to 2800 ml with tap water, and foamed to a volume of 10 liters including liquid using a sponge of Wilson dark metallic shampoo, Then, it was allowed to stand, and the defoamed state of the foam was observed and evaluated with the following evaluation index.
○: Antifoam less than 2000 ml in 1 hour.
Δ: Defoaming of 2000 ml to 4000 ml or less in 1 hour.
X: Antifoam exceeding 4000 ml in 1 hour.

(3) Hardness of foam 40 ml of vehicle cleaning agent is put in a 10 liter bucket, diluted to 2800 ml with tap water, foamed to 10 liter in volume including liquid using a polyether sponge, A sponge of Wilson dark metallic shampoo soaked with each vehicle cleaner (including the mass of the vehicle cleaner soaked, the load on the contact surface with the foam surface is 0.3 g / cm ² ) Gently placed, the time taken for the sponge to sink into the foam and reach the liquid surface was measured and evaluated with the following evaluation indices.
A: Even if more than 1 hour elapses, it does not sink to the liquid surface.
○: Sinks to the liquid surface in 30 minutes or more and less than 1 hour.
Δ: Sinks to the liquid surface in 15 minutes or more and less than 30 minutes.
X: Sinks to the liquid surface in less than 15 minutes.

  As can be seen from the results shown in Table 3, in Examples 1 to 15 which are the vehicle cleaning agents of the present invention, foaming is not only good, but also foam persistence is high and solid hard foams are formed. It was. Therefore, in the actual car wash, the car can be washed with the foam that has once been raised, and the burden on the user is reduced. In addition, since the foam is hard and firm, it is possible to wrap the painted surface with dirt and debris when washing it with a car wash tool such as a brush or sponge during car washing, and wash the car while protecting the painted surface. can do.

  On the other hand, in Comparative Examples 1 to 6 that do not hit the vehicle cleaning agent of the present invention, although foaming is good, the persistence of the foam is insufficient and the foam is soft. Although applicable, handling at the time of car wash like each vehicle cleaning agent of the embodiment is not possible.

Claims (2)

At least one or both of a surfactant of alkyl sulfate (alkyl group having 8 to 18 carbon atoms) and polyoxyethylene alkyl ether sulfate (alkyl group having 8 to 18 carbon atoms), and 12 to 12 carbon atoms A vehicle cleaning agent comprising 16 higher alcohols and / or higher fatty acids having 12 to 16 carbon atoms and water. The blending ratio {(surfactant): (higher alcohol and / or higher fatty acid)} of the surfactant and the higher alcohol and / or the higher fatty acid is within a range of 3: 1 to 100: 1 on a mass basis. The vehicle cleaning agent according to claim 1, wherein