JP2021185207A - Detergent for animals - Google Patents

Abstract

To provide a detergent for animals that has reduced content of surfactant and can exhibit low irritation to skin during and after washing.SOLUTION: A detergent for animals contains (A) component: at least one surfactant of (A-1) anionic surfactants and (A-2) ampholytic surfactants, and (B) component: at least one of (B-1) cationic polymers and/or anionic polymers, (B-2) silicone compounds, and (B-3) polyhydric alcohols.SELECTED DRAWING: None

Description

The present invention relates to an animal detergent.

In recent years, the number of households raising pets such as dogs and cats has increased, and along with the increase, the need for cleaning agents such as animal rinses and shampoos has also increased. Since animals have many opportunities to come into contact with dirt from the outside, indigenous skin bacteria and parasites easily propagate, which may cause infectious diseases such as dermatitis and dandruff. In addition to dirt, animal dermatitis is also caused by dryness in a low humidity environment, ultraviolet rays, and irritation caused by detergents. Therefore, in order to maintain the health and comfort of pets, in addition to the cleaning effect of the detergent, hypoallergenic to the skin is required.

In Patent Document 1, a composition in which ceramides are allowed to coexist in water at a predetermined blending ratio together with a nonionic surfactant, a cationic surfactant having a specific structure, and alcohols is described in the stratum corneum. A technique for keeping the skin of a pet healthy by improving the persistence of ceramides is disclosed.

Japanese Unexamined Patent Publication No. 2010-116342

The composition of Patent Document 1 may not sufficiently suppress the irritation to the skin of animals such as pets.
An object of the present invention is to provide a detergent for animals containing an anionic surfactant or an amphoteric surfactant and capable of suppressing irritation to the skin.

The present invention provides the following [1] to [4].
[1] Component (A): At least one surfactant selected from the group consisting of (A-1) anionic surfactant and (A-2) amphoteric surfactant, and component (B): ( B-1) A detergent for animals containing at least one selected from the group consisting of a cationic polymer and / or an anionic polymer, (B-2) a silicone compound, and (B-3) a polyhydric alcohol.
[2] The animal detergent according to [1], wherein the component (A) contains the component (A-1), and the content of the component (A-1) is 1 to 10% by mass in the composition.
[3] The animal product according to [1] or [2], wherein the component (A) contains the component (A-2) and the content of the component (A-2) is 1 to 10% by mass in the composition. Washing soap.
[4] The animal cleaning agent according to any one of [1] to [3], further containing an insecticidal component and / or a pest repellent component.

The present invention provides an animal detergent capable of suppressing irritation to the skin of animals such as pets.

The animal detergent of the present invention contains the components (A) and (B).

[(A): Surfactant]
The component (A) is at least one surfactant selected from the group consisting of (A-1) anionic surfactant and (A-2) amphoteric surfactant. The component (A) may be at least one of (A-1) and (A-2), and may be both (A-1) and (A-2).

[(A-1): Anionic surfactant]
The component (A-1) is an anionic surfactant. The anionic surfactant is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include sulfate type, sulfonate type, carboxylate type and amino acid salt type.

Examples of the sulfate-type anionic surfactant include an alkyl sulfate (for example, a lauryl sulfate such as sodium lauryl sulfate), an alkenyl sulfate, and a polyoxyalkylene alkyl ether sulfate (for example, sodium polyoxyethylene lauryl ether sulfate). Polyoxyethylene alkyl ether sulfate), polyoxyalkylene alkenyl ether sulfate, polyoxyalkylene alkyl phenyl ether sulfate, glyceride sulfate, amide ether sulfate, and other anionic surfactants having sulfate residues. Can be mentioned. Of these, alkyl sulfates and polyoxyalkylene alkyl ether sulfates are preferable, and lauryl sulfates and polyoxyethylene lauryl ether sulfates are more preferable.

Examples of the sulfonate-type anionic surfactant include an alkylbenzene sulfonate (for example, sodium alkylbenzene sulfonate, etc.), a sulfosuccinic acid alkyl ester salt, and a polyoxyalkylene sulfosuccinic acid alkyl ester salt (for example, polyoxyethylene sulfosuccinic acid). Examples thereof include anionic surfactants having sulfonic acid residues such as polyoxyalkylene sulfosuccinic acid lauryl salt such as lauryl disodium), α-olefin sulfonate, alkane sulfonate, and α-sulfo fatty acid ester salt. Of these, alkylbenzene sulfonates and polyoxyalkylene sulfosuccinic acid alkyl ester salts are preferred.

Examples of the carboxylate-type anionic surfactant include higher fatty acid salts (for example, fatty acid salts having 10 or more carbon atoms) and anionic surfactants having carboxylic acid residues such as alkyl ether carboxylates. Be done.

Examples of the amino acid salt-type anionic surfactant include an anions having amino acid residues such as an N-acyl amino acid salt (for example, N-acyl-L-glutamate) and an alkyl amino acid salt (for example, lauroylmethylalanine salt). Examples include sex surfactants. Of these, N-acylamino acid salts are preferred.

When the anionic surfactant has an alkyl group or an alkenyl group, the number of carbon atoms thereof is usually 8 or more, preferably 9 or more, and more preferably 10 or more, unless otherwise defined. As a result, foaming and detergency can be exhibited. The upper limit is usually 26 or less, preferably 24 or less, and more preferably 22 or less. As a result, it is easily dissolved in the solvent and the stability of the solution can be maintained. Therefore, the number of carbon atoms is usually 8 to 26, preferably 9 to 24, and more preferably 10 to 22. When the anionic surfactant has an alkylene oxide structure, the average number of moles added thereof is usually 1 or more, preferably 2 or more. As a result, it is easily dissolved in the solvent and the stability of the solution can be maintained. The upper limit is usually 100 or less, preferably 60 or less. As a result, foaming and detergency can be exhibited. Therefore, the average number of moles of alkylene oxide added is 1 to 100, preferably 2 to 60.

The salt is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include a base addition salt and an amino acid salt. Specifically, for example, alkali metal salts (eg, sodium, potassium), alkaline earth metal salts (eg, alkaline earth metal salts such as calcium and magnesium), inorganic base salts such as ammonium; alkanolamine, triethylammonium, etc. Examples thereof include organic base salts such as triethanolammonium, pyridinium and diisopropylammonium. Of these, inorganic base salts are preferred, alkali metal salts (eg, sodium, potassium) or ammonium are more preferred, and sodium is even more preferred.

As the anionic surfactant, sulfate type, sulfonate type and amino acid salt type are preferable, sodium lauryl sulfate, sodium polyoxyethylene lauryl ether sulfate, sodium alkylbenzene sulfonate, disodium lauryl disouccinate polyoxyethylene sulfosuccinate, N. -Acyl-L-glutamate is more preferred.

The component (A-1) may be one type of anionic surfactant alone or a combination of two or more types. Above all, it is preferable to contain a combination of sodium polyoxyethylene lauryl ether sulfate and disodium polyoxyethylene sulfosuccinate lauryl disodium.

When the component (A-1) is contained, the content thereof is preferably 1% by mass or more, more preferably 1.5% by mass or more, still more preferably 2% by mass or more. As a result, detergency and foaming power can be exhibited. The upper limit is preferably 10% by mass or less, more preferably 9% by mass or less, still more preferably 8% by mass or less. As a result, it is possible to suppress a significant increase in viscosity and prevent deterioration of solution stability. Therefore, the content of the component (A-1) is preferably 1 to 10% by mass, more preferably 1.5 to 9% by mass, still more preferably 2 to 8% by mass.

[(A-2): amphoteric surfactant]
The component (A-2) is an amphoteric surfactant. The amphoteric tenside is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include betaine type, amine oxide type and amino acid type.

Examples of the betaine type amphoteric tenside include an alkyl betaine type, an amide betaine type, a sulfobetaine type, and an imidazolinium betaine type.

Examples of the alkyl betaine type amphoteric tenside agent include lauryldimethylaminoacetic acid betaine, stearyldimethylaminoacetic acid betaine, and coconut oil fatty acid dimethylaminoacetic acid betaine.

Examples of the amide betaine type amphoteric surfactant include lauric acid amide propyl betaine, coconut oil fatty acid amide propyl betaine, and palm kernel oil fatty acid amide propyl betaine.

Examples of the sulfobetaine type amphoteric tenside agent include lauryl hydroxysulfobetaine, coconut oil hydroxysulfobetaine, lauramidopropyl hydroxysultaine, and coconut oil fatty acid amide propyl hydroxysulfobetaine.

Examples of the imidazolinium betaine-type amphoteric surfactant include N-lauroyl-N'-carboxymethyl-N'-hydroxyethylethylenediamine sodium and N-coconut oil fatty acid acyl-N'-carboxymethyl-N'-hydroxyethyl. Examples thereof include ethylenediamine sodium and 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine.

Examples of the amine oxide type amphoteric surfactant include lauryldimethylamine oxide, stearyldimethylamine oxide, and lauric acid amidopropyldimethylamine oxide.

The preferred range of the number of carbon atoms when the amphoteric surfactant has an alkyl group and an alkenyl group and the average number of moles of substance added when the amphoteric surfactant has an alkylene oxide structure is the same as that of the anionic surfactant.

As the amphoteric tenside, the betaine type is preferable, and the amide betaine type and the amine oxide type are more preferable, from the viewpoints of smoothness of the skin after use, no irritation, no itching of the skin, and no dryness. Lauric acid amide propyl betaine, coconut oil fatty acid amide propyl betaine, and lauryldimethylamine oxide are more preferable.

The component (A-2) may be one amphoteric surfactant alone or a combination of two or more amphoteric surfactants.

When the component (A-2) is contained, the content thereof is preferably 1% by mass or more, more preferably 1.5% by mass or more, still more preferably 2% by mass or more. As a result, detergency and foaming power can be exhibited. The upper limit is preferably 10% by mass or less, more preferably 9% by mass or less, still more preferably 8% by mass or less. As a result, it is possible to suppress a significant increase in viscosity and prevent deterioration of solution stability. Therefore, the content of the component (A-2) is preferably 1 to 10% by mass, more preferably 1.5 to 9% by mass, still more preferably 2 to 8% by mass.

[Contents of (A) component]
The total content of the component (A) is preferably 1% by mass or more, more preferably 2% by mass or more, and further preferably 5% by mass or more. As a result, detergency and foaming power can be exhibited. The upper limit is preferably 20% by mass or less, more preferably 16% by mass or less, still more preferably 14% by mass or less. As a result, it is possible to suppress a significant increase in viscosity and prevent deterioration of solution stability. Therefore, the total content of the component (A-1) and the component (A-2) is preferably 1 to 20% by mass, more preferably 2 to 16% by mass, and even more preferably 5 to 14% by mass.

[Mass ratio of (A-2) / (A-1)]
When the component (A) contains both the component (A-1) and the component (A-2), the ratio of the content of the component (A-2) to the content of the component (A-1) ((A--). 2) / (A-1) mass ratio) is preferably 0.2 or more, more preferably 0.25 or more, and even more preferably 0.3 or more. This makes it possible to maintain uniform solubility of the liquid. The upper limit is preferably 3.5 or less, more preferably 3.0 or less, and even more preferably 2.0 or less. This makes it possible to obtain a moist feeling of the skin after drying. Therefore, the mass ratio of (A-2) / (A-1) is preferably 0.2 to 3.5, more preferably 0.25 to 3.0, and even more preferably 0.3 to 2.0.

[(B) component]
The component (B) is at least one selected from the group consisting of (B-1) cationic polymer and / or anionic polymer, (B-2) silicone compound, and (B-3) polyhydric alcohol. The component (B) may be at least one of (B-1) to (B-3), and may be a combination of two or more.

[(B-1): Cationic polymer and / or anionic polymer]
The component (B-1) is a cationic polymer and / or an anionic polymer.

-Cationic polymer-
Among the components (B-1), the cationic polymer may be, for example, either a natural cationic polymer or a synthetic cationic polymer.

Examples of the natural cationic polymer include hydroxyethyl cellulose reacted with cationized cellulose (trimethylammonium-substituted epoxide (polyquaternium-10, O- [2-hydroxy-3- (trimethylammonio) propyl] hydroxyethyl cellulose) chloride). Salt), cationized guar gum (guar hydroxypropyltrimonium chloride, O- [2-hydroxy-3- (trimethylammonio) propyl] guar gum), cationized starch, cationized chitosan, fatty acid monoethanolamide, fatty acid diethanolamide. Alternatively, these derivatives may be mentioned. Examples of the synthetic cationic polymer include a dimethyldiallyl ammonium chloride polymer and a dimethyldiallyl ammonium chloride / acrylamide copolymer. Of these, cationized guar gum and cationized cellulose are preferable.

When the cationic polymer contains a nitrogen atom, the nitrogen content thereof is preferably 1.0 to 1.8% by mass, more preferably 1.1 to 1.45% by mass. This makes it possible to impart smoothness to the hair during rinsing. The nitrogen content of the cationic polymer can be measured by decomposing the polymer with sulfuric acid to form ammonium sulfate by the Kjeldahl method and quantifying the ammonia (“Quasi-drug Raw Material Standard 2006 (Yakuji Nippo)” general test method 44. Nitrogen quantification method).

-Anionic polymer-
Examples of the anionic polymer include carboxylic acid-containing polymers (for example, polyacrylic acid, polymethacrylic acid, acrylate / methacrylate copolymer, acrylate / steares-20 methacrylate copolymer, acrylic acid / silicone copolymer, acrylic acid. / Acrylic acid-based polymers such as acrylamide copolymers; polyitaconic acid, carboxyvinyl polymers; ethylene anhydride maleic acid copolymers, methyl vinyl ether anhydride maleic acid copolymers, ethyl vinyl ether anhydride maleic acid copolymers, n-butylvinyl ether anhydride Maleic acid copolymers, isopropyl anhydride maleic acid copolymers, or ring-openers thereof, carboxymethyl hydroxyethyl cellulose, alginic acid, xanthan gum, gellan gum, shelac, carrageenan, pectin), sulfonic acid-containing polymers (eg, polystyrene sulfonic acid, Polyethylene sulfonic acid), sulfuric acid-containing polymer (eg, polyvinyl sulfate), phosphate-containing polymer (eg, acid phosphooxypolyoxypropylene glycol monomethacrylate (Hosmer PP) copolymer, acid phosphooxypolyoxyethylene glycol monomethacrylate (Hosmer)). PE) copolymer, acid phosphooxyethyl monomethacrylate (Hosmer M) copolymer); partially acetalized polyvinyl alcohol with glyoxylic acid. Of these, carboxylic acid-containing polymers are preferable, and polyacrylic acid and acrylate / methacrylate copolymers are more preferable. The carboxylic acid-containing polymer may be linear, branched, crosslinked, or hyperbranched. The weight average molecular weight of the carboxylic acid-containing polymer is usually 10 to 10 million, preferably 5000 to 5 million.

As used herein, the weight average molecular weight can be measured by gel permeation chromatography (GPC). As a measuring method, for example, apparatus: manufactured by Tosoh Corporation, SC8010, SD8022, RI8020, CO8011, PS8010, column: Wakopak (Wakobeads G-50), developing solvent: water / methanol / acetic acid / acetic acid. A method of obtaining polyethylene glycol as a standard substance using sodium = 6/4 / 0.3 / 0.41 (volume ratio) can be mentioned.

The anionic polymer may be in the form of a salt. Examples of salts, preferred examples, are similar to those mentioned in the description of anionic surfactants.

The component (B-1) may be at least one selected from a cationic polymer and an anionic polymer, and may be both, but when the component (B-2) is contained, at least an anionic polymer may be contained. Preferably, when the component (B-3) is contained, it is preferable to contain at least a cationic polymer. The cationic polymer and the anionic polymer may be used alone or in combination of two or more.

When the component (B-1) is contained, the content thereof is preferably 0.05% by mass or more, more preferably 0.08% by mass or more, and even more preferably 0.1% by mass or more. As a result, the moist feeling of the skin and the amount of water in the skin are improved. The upper limit is preferably 1% by mass or less, more preferably 0.9% by mass or less, and even more preferably 0.8% by mass or less. As a result, the absence of squeaking during rinsing is improved, and a significant increase in the viscosity of the cleaning agent can be suppressed. Therefore, 0.05 to 1% by mass is preferable, 0.08 to 0.9% by mass is more preferable, and 0.1 to 0.8% by mass is even more preferable.

[(B-2): Silicone compound]
The component (B-2) is a silicone compound. Examples of the silicone compound include dimethylpolysiloxane, cyclic silicone, and amino-modified silicone. Examples of the dimethylpolysiloxane include trimethylsilyl group-terminated dimethylpolysiloxane and silanol group-terminated dimethylpolysiloxane.

Dimethylpolysiloxane, kinematic viscosity at 25 ° C., preferably 10,000~30,000,000mm ² / s, more preferably 100,000~10,000,000mm ² / s, 100,000~1,000 000 mm ² / s is more preferred. As a result, it is possible to give a silky feeling to the hair tips after drying.

The kinematic viscosity of dimethylpolysiloxane at 25 ° C. can be measured, for example, by the method shown below. A toluene solution of dimethylpolysiloxane having a concentration of 1 g / 100 mL is prepared, and the specific viscosity ηsp (25 ° C.) is determined by the following formula (1). Next, the intrinsic viscosity [η] is obtained by substituting into the relational expression of Huggins shown in the following equation (2). As the Huggins constant, the one described in Nakamuta, Nihon Kagaku Journal, Vol. 77, pp. 858-861, 1956 is used. Next, the intrinsic viscosity [η] is shown in the following formula (3). Substitute it in the formula of Kolelov to obtain the molecular weight M. Finally, the molecular weight M is represented by the following formula (4). J. The kinematic viscosity η of dimethylpolysiloxane can be obtained by substituting it into Barry's equation.
ηsp = (η / η ₀ ) -1 ... Equation (1)
ηsp = [η] + K'[η] ² ... Equation (2)
[Η] = 0.215 × 10 ^-4 M ^0.65 ... Equation (3)
logη = 1.00 + 0.0123M ^0.5 ... Equation (4)
In the formula, "η ₀ " is the viscosity of toluene, "η" is the viscosity of the solution, and "K'" is the Huggins constant (applicable when K'= 0.3 ([η] = 1-3). ). η ₀ and η can be measured in accordance with the cosmetic raw material standard general test method, the first method of viscosity measurement.

The number average particle size of dimethylpolysiloxane is preferably 0.5 μm or more, more preferably 10 μm or more, still more preferably 15 μm or more. As a result, it is possible to suppress the delay in drying of the hair after use and the decrease in the silky feeling of the hair tips. The upper limit is preferably 60 μm or less, more preferably 50 μm or less, still more preferably 40 μm or less. This allows the smoothness of the hair to be maintained after rinsing. Therefore, the number average particle size is preferably 0.5 μm to 60 μm, more preferably 10 μm to 50 μm, and even more preferably 15 μm to 40 μm. The number average particle size can be obtained by image processing (for example, processing by the two-dimensional image analysis software WinROOF) after arbitrarily capturing an image of particles observed with an optical microscope into a computer at 100 locations and setting the same magnification.

Examples of the amino-modified silicone include aminoethylaminopropylsiloxane / dimethylsiloxane copolymer (amodimethicone), aminoethylaminopropylmethylsiloxane / dimethylsiloxane copolymer (aminoethylaminopropylmethicone / dimethicone copolymer), and amino. Examples thereof include a copolymer (linear aminopolyether modified silicone) having a block chain of a modified organopolysiloxane chain and a polyoxyalkylene chain, and aminopropyldimethicone. Of these, amodimethicone and linear aminopolyether-modified silicone are preferable because they can impart smoothness to the hair during rinsing.

When the component (B-2) is contained, the content thereof is preferably 0.01% by mass or more, more preferably 0.03% by mass or more, and even more preferably 0.1% by mass or more. This can improve the smoothness of the hair during rinsing and the silky feel of the hair after drying. The upper limit is preferably 6% by mass or less, more preferably 4% by mass or less, and even more preferably 3% by mass or less. As a result, storage stability is good. Therefore, 0.01 to 6% by mass is preferable, 0.03% by mass to 4% by mass is more preferable, and 0.1% by mass to 3% by mass is even more preferable.

When the component (B-2) contains dimethylpolysiloxane, the content thereof is preferably 0.03% by mass or more, more preferably 0.1% by mass or more, and even more preferably 0.2% by mass or more. This can improve the silky feel of the hair tips after drying. The upper limit is usually 4.5% by mass or less, preferably 3% by mass or less, and more preferably 2% by mass or less. As a result, the delay in drying after washing can be suppressed, and on the other hand, the silky feeling of the hair tips after drying can be improved. Therefore, usually 0.03 to 4.5% by mass is preferable, 0.1 to 3% by mass is more preferable, and 0.2 to 2% by mass is further preferable.
Further, when used in combination with a swellable clay mineral having a layered structure such as smectite, the silky feeling after drying is further improved.

When the component (B-2) contains amino-modified silicone, the content thereof is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, still more preferably 0.1% by mass or more. As a result, the smoothness of the hair during rinsing and the silky feel of the hair tips after drying can be improved. The upper limit is usually 1.5% by mass or less, preferably 1% by mass or less. As a result, it is possible to suppress the delay in drying of the hair after washing and the occurrence of stickiness. Therefore, 0.01 to 1.5% by mass is preferable, 0.05 to 1% by mass is more preferable, and 0.1 to 1% by mass is further preferable.

[(B-3): Polyhydric alcohol]
The component (B-3) is a polyhydric alcohol. Examples of the polyhydric alcohol include (poly) alkylene glycol (eg, ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, 1,3-butylene glycol, polyethylene glycol, polypropylene glycol), sugar alcohol (eg, sorbit, xylitol). , Glycerin, diglycerin, polyglycerin, polyoxyethylene glycerin, xylitol, trehalose). Of these, polyoxyethylene glycerin, sorbitol, glycerin, propylene glycol, and xylitol are preferable. When the polyhydric alcohol has an alkylene oxide structure, specific examples and preferable examples of the average number of moles of the polyhydric alcohol are the same as those described in the section of the description of the anionic surfactant.

When the component (B-3) is contained, the content thereof is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, and even more preferably 0.5% by mass or more. As a result, the moist feeling of the skin after drying and the smoothness of the skin at the time of rinsing can be improved. The upper limit is preferably 15% by mass or less, more preferably 10% by mass or less, and even more preferably 7.5% by mass or less. This can improve the amount of foam and the creaminess of the foam. Therefore, 0.05 to 15% by mass is preferable, 0.1 to 10% by mass is more preferable, and 0.5 to 7.5% by mass is even more preferable.

[Contents of component (B)]
The total content of the component (B) is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, and even more preferably 0.4% by mass or more. As a result, the moist feeling of the skin after drying, the smoothness of the hair and the skin during rinsing, and the silky feeling of the hair after drying are good. The upper limit is preferably 20% by mass or less, more preferably 10% by mass or less, and even more preferably 7.5% by mass or less. As a result, a large amount of foam, creaminess, and no squeaking during rinsing are good, and a significant increase in the viscosity of the cleaning agent can be suppressed. Therefore, the total content of the component (B) is preferably 0.1 to 20% by mass, more preferably 0.2 to 10% by mass, and even more preferably 0.4 to 7.5% by mass.

[Mass ratio of (B-1) / (B-2)]
When the component (B) contains both the component (B-1) and the component (B-2), the ratio of the content of the component (B-1) to the content of the component (B-2) ((B-). 1) / (B-2) mass ratio) is preferably 0.01 or more, more preferably 0.05 or more, and even more preferably 0.2 or more. As a result, the moist feeling of the skin is improved, and the viscosity of the cleaning agent becomes moderately good. The upper limit is preferably 30 or less, more preferably 13 or less, and even more preferably 5 or less. As a result, squeaky hair during rinsing can be suppressed, the silky feel of the hair after drying can be improved, and a significant increase in the viscosity of the cleaning agent can be suppressed. Therefore, 0.01 to 30 is preferable, 0.05 to 13 is more preferable, and 0.2 to 5 is even more preferable.

[Mass ratio of (B-1) / (B-3)]
When the component (B) contains both the component (B-1) and the component (B-3), the lower limit of the mass ratio of the component (B-1) and the component (B-3) is 0.003 or more. Preferably, 0.008 or more is more preferable, and 0.02 or more is even more preferable. This can improve the moist feeling of the skin, the large amount of foam, and the creaminess. The upper limit is preferably 30 or less, more preferably 10 or less, and even more preferably 5 or less. As a result, the smoothness of the skin during rinsing and the moist feeling of the skin after drying can be improved. Therefore, the mass ratio of the component (B-1) to the component (B-3) is preferably 0.003 to 30, more preferably 0.008 to 10, and even more preferably 0.02 to 5.

[Preferable combination of components (A) and (B)]
Preferred combinations of the components (A) and (B) include, for example, the following combinations.
A combination containing at least the components (A-2) and (B-1), preferably a combination containing at least an amide propyl betaine laurate and an acrylate / methacrylate copolymer.
A combination containing at least the components (A-2) and (B-2), preferably a combination containing at least amide propyl betaine laurate and dimethylpolysiloxane.
A combination containing at least the components (A-2) and (B-1), preferably a combination containing at least the coconut oil fatty acid amide propyl betaine and cationized guar gum.
A combination containing at least the components (A-2) and (B-3), preferably a combination containing at least the coconut oil fatty acid amide propyl betaine and sorbitol or glycerin.

[PH of composition]
The pH (25 ° C.) of the composition is usually 4.0 or higher, preferably 4.5 or higher, more preferably 5.0 or higher. The upper limit is usually 8.0 or less, preferably 7.5 or less, still more preferably 7.0 or less, and even more preferably 6.5 or less. Therefore, it is usually 4.0 to 8.0, preferably 4.5 to 7.5, more preferably 4.5 to 7.0, and even more preferably 5.0 to 6.5. As a result, irritation to the skin can be suppressed.

The pH can be measured at 25 ° C. using a pH meter for the detergent composition diluted 10 times with purified water. The pH in the latter example is a value measured by this method using HM-30G (manufactured by DKK-TOA CORPORATION) as a pH meter.

[Viscosity of composition]
The viscosity (25 ° C.) of the composition is usually 0.001 Pa · s or more, and the upper limit is usually 30 Pa · s or less. Therefore, the viscosity of the composition is preferably 0.001 to 30 Pa · s. This can further improve the usability.
Further, when a former container is used as a container for filling the composition, it is preferable that the viscosity is relatively low. For example, when using a pump former container (using two 200 mesh sheets as a porous membrane body) capable of discharging bubbles by pushing down the pump, the viscosity (25 ° C.) of the composition should be appropriately selected according to the purpose. However, at 25 ° C., 1 mPa · s to 30 mPa · s is preferable, and 1 mPa · s to 10 mPa · s is more preferable.
For the viscosity, use a viscometer (BM type viscometer, manufactured by TOKIMEC), and if it is less than 0.03 Pa · s, the rotor No. At 60 rpm, after 1 minute at 1, under the condition of 25 ° C., when 0.03 Pa · s or more, No. It can be measured with 4 rotors at 30 rpm for 20 seconds and then at 25 ° C.

[Other ingredients]
The composition may contain any component other than the components (A) and (B), if necessary. Examples of the optional component include the following components.

− Solvent −
The composition usually contains a solvent. Examples of the solvent include water (for example, purified water), ethanol, and hexylene glycol, and water, ethanol, or a mixed solvent of ethanol and water is preferable.

-Insecticidal and pest repellent ingredients-
By containing an insecticidal component / pest repellent component, it is possible to exert an insecticidal / repellent effect against fleas, ticks and other pests.
Examples of the insecticidal component include pyrethroid compounds (eg, phenothrin, allethrin, phthalthrin, pyrethrin), organic phosphorus compounds (eg, phenothrin, fenthion, diazinone, dichlorvos, trikiloruphon, prothiophos, pidaphonthione), and carbamate compounds (eg, pidaphonthione). Calcalyl, phenocarb, propoxer), pyrethroid compounds are preferred, and phenothrins are more preferred.
Examples of pest repellent components include N, N-diethyl-3-methylbenzamide (DEET) and bisbutenylene tetrahydrofurfural (Repelent 11).
At least one of the insecticidal component and the pest repellent component may be used, or both may be used. Each component may be one kind alone or a combination of two or more kinds.
When the insecticidal component and / or the pest repellent component is contained, the total content thereof is preferably 0.02 to 2% by mass, more preferably 0.05 to 1% by mass, based on the total amount of the composition.

-Fungicides and preservatives-
Examples of the disinfectant include chloroxylenol, salicylic acid, zinc gluconate, sorbate, isopropylmethylphenol, triclosan, dehydroacetate, 2,4,4'-trichloro-2'-hydroxydiphenyl ether, 3,4,4. ′ -Trichlorocarbanilide, benzalkonium chloride, hinokithiol, resorcin, 5-chloro-2-methyl-4-isothiazolin-3-one, pentandiol, phenoxyethanol, among others, chloroxylenol, salicylic acid, zinc gluconate. preferable.
Examples of the preservative include benzoate (for example, sodium benzoate) and paraoxybenzoic acid ester (for example, methyl paraoxybenzoate).
When the composition has a pH of 6.0 or more, it is preferable to contain a bactericide and / or a preservative, and it is preferable to increase the amount as compared with the content when the composition is contained below pH 6.0. This makes it possible to improve the storage stability of the composition.

-PH regulator-
Examples of the pH adjuster include triethanolamine, citric acid, glycolic acid, and salts thereof (for example, sodium salt).

-Moisturizer-
Examples of the moisturizer include glycine, trimethylglycine, sugar cane extract, peppermint oil, polyoxyethylene glycerin, collagen, hyaluronic acid, royal jelly, silk protein, and smectite.

-Viscosity modifier-
Examples of the viscosity modifier other than the component (B-1) include fatty acid monoethanolamide, fatty acid diethanolamide, and sodium chloride. These may be used alone or in combination of two or more.

-Refreshing agent-
Examples of the refreshing agent include menthol, peppermint oil, spearmint oil, peppermint oil, N-ethyl-p-menthane-3-carboxamide, and mentoxypropanediol.

-Stabilizer-
Examples of stabilizers include, for example, polyoxyethylene alkyl ether (the number of carbon atoms in the alkyl chain is, for example, 8 to 20, preferably 10 to 16, more preferably 12 to 14), hydroxyethanediphosphonic acid, and dibutyl. Examples thereof include hydroxytoluene and disodium edetate.

-Other optional ingredients-
Optional components other than the above include, for example, hydrocarbons such as liquid paraffin and squalane; esters such as isopropylmillistate; vegetable oils such as camellia oil, almond oil and jojoba oil; plant extracts such as white birch extract; behenyltrimethylammonium chloride and the like. Cationic surfactants; nonionic surfactants such as polyoxyethylene alkyl ethers, glycerin fatty acid esters, sucrose fatty acid esters, polyglycerin fatty acid esters, polyoxyethylene hydrogenated castor oil; gallic acid derivatives; serine, arginine, etc. Amino acids; anti-inflammatory agents such as pyrrolidonecarboxylic acid or salts, crude drugs, vitamins, dipotassium glycyrrhizinate, glycyrrhetinic acid; anti-solvents such as pyrocton olamine, zinc pyrithione; tar pigments; oxybenson, 2-ethylhexyl methoxycinnamate, etc. UV absorbers; Antioxidants such as dibutylhydroxytoluene; Solvents such as water, ethanol, hexylene glycol; Nonionic polymers such as vinylpyrrolidone polymers; Amphoteric polymers such as diallyldimethylammonium chloride / acrylic acid; Silica anhydrous, magnesia Examples thereof include inorganic powders such as silica; organic powders such as nylon and polyethylene; fragrances such as fragrances; and amines. These may be used alone or in combination of two or more.

〔container〕
The composition can be used by filling it in a container. Examples of the container include aluminum laminated tubes, EVAL tubes, aluminum tubes, glass-deposited plastic tubes and other tubes, mechanical or differential pressure dispenser containers, squeeze containers, laminated film containers, dropper containers, bottle containers, pump-type containers, etc. Examples thereof include a pump former container, but the present invention is not particularly limited thereto.
Examples of the material of the laminated film include polyethylene, polyethylene terephthalate, polyester, biaxially stretched polypropylene, unstretched polypropylene, polyacrylonitrile, synthetic resins such as ethylene-vinyl acetate copolymer, paper, and aluminum-deposited plastic. The structure of the laminated film may be two or more layers, and is preferably 2 to 5 layers in consideration of strength, flexibility, weather resistance and the like.
Examples of the material of the bottle include resins such as polyethylene, polypropylene, polyethylene terephthalate, polystyrene, polyvinyl chloride, ethylene-vinyl alcohol resin, acrylonitrile / styrene resin, ABS resin, and polyamide, and glass. The structure of the container is preferably a single layer or a layered structure of two or more layers.
The pump former container may be, for example, a container capable of discharging the composition in the container as bubbles by pushing down the pump, and a container provided with at least one porous membrane as a foaming mechanism is preferable. The porous membrane body is usually composed of a single layer or a plurality of layers, and examples of the membrane include a sponge-like, sintered body, and a mesh-like membrane (usually having a thickness of about 0.1 to 2 mm). .. The mesh size of the film is preferably 50 to 500 mesh, more preferably 150 to 400 mesh. Examples of the material of the porous membrane body include plastic materials such as nylon, polyester, and polyolefin. As the pump former container, for example, the containers described in JP-A-7-215352 and JP-A-9-118352 may be used.

[Target]
The composition can be used as a cleaning agent for animals. Animals are usually non-human animals, preferably pets (eg dogs, cats).

[Use]
Since the composition is less irritating to the skin, damage to the skin can be suppressed even if it is used every day, and it can also be used around the face. Therefore, as a cleaning agent for shampoos and the like, for example, it can be used in the form of rinse-in shampoo, face shampoo, damage care shampoo, mild shampoo, dandruff-removing shampoo, and preferably in the form of rinse-in shampoo.

Hereinafter, the present invention will be described in more detail based on Examples and Comparative Examples, but the present invention is not limited to these Examples.

Examples 1-38 and Comparative Example 1 [Rinse-in shampoo for pets]
The components shown in Tables 1 to 5 below are added so as to have the content shown in Tables 1 to 5 below (the numerical values in the table are mass% with respect to the total amount (pure content conversion value)), and the mixture is stirred at 25 ° C. for 30 minutes. did. By adding a pH adjuster to adjust the pH, the shampoo compositions of Examples and Comparative Examples were obtained.

The shampoo compositions of Examples and Comparative Examples were evaluated for skin hypoallergenicity based on the following evaluation methods.
[Skin hypoallergenic evaluation method]
This evaluation is based on R. It was carried out with reference to the report of ROGUET et al. (Toxicology in Viro, 12 (1998) 295-304).
EPISKIN ^TM- LM (1.07 cm ² ) was incubated in maintenance medium for 24 hours. Then, 150 μL of the test sample was added from the epidermis side and cultured in a new maintenance medium for another 18 hours. PBS (+) was used as a negative control, and 5% SDS aqueous solution was used as an irritant control. After culturing, the skin model was washed with PBS (+) to completely remove the test sample and 0.3 mg / mL 3- (4,5-Dimethyl-2-thiazollyl) -2,5-diphenyl-2H. -The sample was transferred to a test medium containing tetrazolium chloride (MTT) (without phenol red) and cultured for 3 hours. Then, the skin model was punched out of the transwell and further immersed in acidic isopropanol for 24 hours to extract blue formazan. The absorbance of the extract at 570 nm was measured with a microplate reader. MTT viavity (%) was expressed as a percentage of the absorbance of the negative control exposed skin model.
(Evaluation criteria)
MTT viability ≤ 50%: irritating MTT viaviity> 50%: not irritating

In Comparative Example 1, irritation to the skin was observed, whereas the rinse-in shampoos for pets of Examples 1 to 38 containing the components (A) and (B) had suppressed irritation to the skin.
This result indicates that the animal cleanser of the present invention is less irritating to the skin.

Claims (4)

Component (A): At least one surfactant selected from the group consisting of (A-1) anionic surfactant and (A-2) amphoteric surfactant, and component (B): (B-1). A detergent for animals containing at least one selected from the group consisting of cationic polymers and / or anionic polymers, (B-2) silicone compounds, and (B-3) polyhydric alcohols. The animal detergent according to claim 1, wherein the component (A) contains the component (A-1), and the content of the component (A-1) is 1 to 10% by mass in the composition. The animal detergent according to claim 1 or 2, wherein the component (A) contains the component (A-2), and the content of the component (A-2) is 1 to 10% by mass in the composition. The animal detergent according to any one of claims 1 to 3, further comprising an insecticidal component and / or a pest repellent component.