JPH03184908A - Shampoo composition - Google Patents

Abstract

PURPOSE:To obtain the title composition containing 1-hydroxy-2-pyrrolidone based compound, anionic surfactant, Quaternary nitrogen-containing cationic compound and slightly water-soluble oil content and having excellent itch preventing effect and simultaneously having good blending stability at low temperature. CONSTITUTION:The aimed composition containing (A) a compound expressed by the formula (R1 is alkyl, alkenyl, cycloalkyl, aryl, aralkyl, etc.; R2 is H, alkyl, halogen, phenyl, etc.; X is organic base, alkali metal ion, etc.), (B) anionic surfactant, e.g. paraffin sulfonate expressed by the formula PS-M1 [PS is acid residue of 10-18C alkylsulfonate; M1 is alkali (earth) metal ion], (C) cationic compound containing Quaternary nitrogen, e.g. quaternary ammonium salt type cationic surfactant and (D) slightly water-insoluble oil content, e.g. polyoxyalkylene hardened castor oil or silicone oil at ratios of the ingredient A of 0.01-2wt.%, the ingredient B of 5-30wt.%, the ingredient C of 0.1-2wt.% and the ingredient D of 0.01-10wt.%.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a shampoo composition that has an excellent anti-crab effect and has good formulation stability at low temperatures.

[Conventional technology]

In recent years, the functions required of shampoos have become diverse.
In addition to 'washing the hair cleanly', one of its important functions is to suppress the appearance of dandruff on the scalp. The causes of Crab S on the scalp include microorganisms resident on the scalp, various irritants such as fatty acids and peroxides produced by exposure to light and air oxidation, surfactants contained in shampoo and hair makeup. It is believed that substances remaining in the hair and scalp, as well as various irritating substances generated from the living environment, are involved.

Therefore, in order to prevent scalp irritation, it is necessary to wash your hair thoroughly and remove irritating substances.
Furthermore, the shampoo and the like used must be mildly irritating.

On the other hand, in order to prevent crabs 5, various bactericidal agents and antioxidants have been conventionally incorporated into shampoo compositions. Piroctone olamine, zinc virideon, sulfur, selenium disulfide, etc. are generally known as this bactericidal and antioxidant agent. Among these, viroctone olamine is an excellent bactericidal and antibacterial agent, and is often used in shampoos. It is used as an anti-dandruff agent.
Publication No. 8412).

[Problem to be solved by the invention]

However, when piroctone olamine is added to shampoo, it is difficult for piroctone olamine to remain on the scalp and hair after shampooing because the shampoo requires rinsing.
For this reason, there is a problem in that the anti-itch effect is still unsatisfactory.

In this case, if viroctone ola 5 is blended into a composition such as a rinse or conditioner, piroctone ola 5 can be left well on the scalp and hair even though there is a rinsing process. This is presumed to be due to the fact that the adsorption of oils such as cationic compounds and ester oils in rinses and conditioners to the scalp and hair is higher than that of anionic surfactants and the like in shampoos.

However, even if these cationic compounds and oils, which are rinse ingredients, are simply added to shampoo compositions in order to increase the persistence of viroctone olamine in the scalp and hair, a stable formulation cannot be achieved, and the product separates, especially at low temperatures. This causes a significant change in appearance, such as the occurrence of oxidation, making it difficult to formulate stably at low temperatures, resulting in a problem in that sufficient shampoo performance cannot be obtained.

The present invention was made in view of the above circumstances, and an object of the present invention is to provide a shampoo composition that has an excellent anti-itch effect and has good stability at low temperatures.

[Means and effects for solving the problem] As a result of extensive studies to achieve the above object, the present inventors have developed a 1-hydroxy-2-pyridone compound represented by the following general formula (1), an anionic surfactant. By using a quaternary nitrogen-containing cationic compound and a poorly water-soluble oil in combination, the synergistic effect of these will significantly improve the anti-crab 5 effect, and
The inventors have discovered that it is possible to obtain a shampoo composition that does not cause separation even at low temperatures of about -5°C and has good low-temperature stability, leading to the present invention.

[In the formula, R1 is an alkyl group having 1 to 17 carbon atoms, an alkenyl group having 2 to 17 carbon atoms, 5 to
a cycloalkyl group having 8 carbon atoms, a bicycloalkyl group having 7 to 9 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms and an alkyl group having 1 to 4 carbon atoms;
a cycloalkyl-alkyl group having 6 to 14 carbon atoms (with the proviso that a cycloalkyl group may have a portion of its hydrogen atoms replaced by an alkyl group having 1 to 4 carbon atoms); aryl radicals having 6 to 14 carbon atoms, aralkyl radicals having 6 to 14 carbon atoms and alkyl radicals having 1 to 4 carbon atoms, alkenyl radicals having 6 to 14 carbon atoms; base is 2
Arylalkenyl groups having ~4 carbon atoms, aryloxyalkyl or arylmercaptoalkyl groups in which the aryl group has 6 to 14 carbon atoms and the alkyl groups each have 1 to 4 carbon atoms, benzhydryl group , represents a phenylsulfonylalkyl group in which the alkyl group has 1 to 4 carbon atoms, a furyl group, or a furylalkenyl group in which the alkenyl group has 2 to 4 carbon atoms. However, the above-mentioned aryl group is an alkyl group in which part of the hydrogen atoms has 1 to 4 carbon atoms, 1 to 4 carbon atoms.
may be substituted by an alkoxy group having 5 carbon atoms, a nitro group, a cyano group or a halogen. R2 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, 2
Represents an alkenyl group having ~4 carbon atoms, an alkynyl group having 2 to 4 carbon atoms, a halogen atom, a phenyl group, or a benzyl group.

X represents an organic base, an alkali metal ion, an ammonium ion, or a di- to tetravalent cation. ] Hereinafter, the present invention will be explained in more detail.

The first essential component of the present invention is a 1-hydroxy-2-pyridone compound represented by the following format (1).

Here, R1 in formula (1) is an alkyl group having 1 to 17 carbon atoms, an alkenyl group having 2 to 17 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms,
Bicycloalkyl groups having 7 to 9 carbon atoms, cycloalkyl-alkyl groups in which the cycloalkyl group has 5 to 8 carbon atoms and the alkyl group has 1 to 4 carbon atoms (with the exception that cycloalkyl groups may have a part of its hydrogen atoms substituted by an alkyl group having 1 to 4 carbon atoms), an aryl group having 6 to 14 carbon atoms, an aryl group having 6 to 14 carbon atoms an aralkyl group in which the alkyl group has 1 to 4 carbon atoms, an arylalkenyl group in which the aryl group has 6 to 14 carbon atoms and the alkenyl group has 2 to 4 carbon atoms, aryl the radicals have 6 to 14 carbon atoms and the alkyl radicals each have 1 to 4 carbon atoms-
ruoxyalkyl or -lumerptoalkyl group, benzhydryl group, phenylsulfonylalkyl group in which the alkyl group has 1 to 4 carbon atoms, furyl group,
or a furylalkenyl group in which the alkenyl group has 2 to 4 carbon atoms. In addition, in the above-mentioned aryl group, a part of the hydrogen atoms is substituted with an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a nitro group, a cyano group, or a halogen. Good too.

Also, Rz4 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, an alkynyl group having 2 to 4 carbon atoms, a halogen atom, a phenyl group , is also a hahenzyl group.

Furthermore, X is an organic base, an alkali metal ion, an ammonium ion, or a di- to tetravalent cation.

Specific examples of the compound represented by the above formula (I) include the following compounds and salts thereof.

1-hydroxy-2-pyridone, 1-hydroxy-4-
Methyl-2-pyridone, 1-hydroxy-6-methyl-2-pyridone, 1-hydroxy-4,6-simethyl-2
-pyridone, l-hydroxy-4-methyl-6-hebutyl-
2-pyridone, 1-hydroxy-4-methyl-6-(1-
ethylpentyl)-2-pyridone, 1-hydroxy-4
-Methyl-6-(2,4,4-trimethylpentyl)-
2-pyridone, 1-hydroxy-4-methyl-6-undecyl-2-pyridone, 1-hydroxy-4-methyl-6-brobenyl-2-pyridone, 1-hydroxy-4-methyl-6-octynyl-21 pyridone, 1-hydroxy- 4-methyl-6(2,2-
dibutyl-vinyl)-2-pyridone, ■Hydroxy-4
-Methyl-6-(cyclohexenylidene-methyl)-2
-pyridone, 1-hydroxy-4-methyl-6-cyclohexyl-2-pyridone, 1-hydroxy-4-methyl-6-(methyl-cyclohexyl)-2-pyridone, 1
-Hydroxy-4-methyl-6-(2-bicyclo(2,
2,1)heptyl)-2-pyridone, 1-hydroxy-
4-Methyl-6-(2-(dimethylcyclohexyl)-
propyl]-2-pyridone, 1-hydroxy-4-methyl-6-<4-methyl-phenyl>-2-pyridone, 1-
Hydroxy-4methyl-6-(3-methyl-phenyl)
-2-pyridone, 1-hydroxy-4-methyl-6-(
4-tert-butyl-phenyl)-2-pyridone, 1-hydroxy-4-methyl-6-(3-methyl-4-chloro-phenyl)-2-pyridone, 1-hydroxy-4-methyl-
6-(3,5-dichloro-phenyl)-2-pyridone,
1-hydroxy-42 methyl-6-(3-bromo-4-chloro-phenyl)-
2-pyridone, 1-hydroxy-4-methyl-6-(4
-methoxystyryl)-2-pyridone, 1-hydroxy-4-methyl-6-[1(4-nitrophenoxy)-butyl]-2-pyridone, 1-hydro; phenoxymethyl)-2-pyridone,
1-hydroxy-4-methyl-6-(phenylsulfonylmethyl)-2-pyridone, ■-hydroxy4-methyl-
6-(1-<4-chlorophenylsulfonyl)-butyl]-2-pyridone, 1-hydroxy-4-methyl-6-
Benzyl-2-pyridone, 1-hydroxy-4-methyl-6-(2,4dimethylbenzyl)-2-pyridone, 1
-hydroxyl 4-methyl-6-(tert-butyl-benzyl) 2-pyridone, 1-hydroxy-4-methyl 6-(
2-chlorobenzyl)-2-pyridone, 1-hydroxy-4-methyl-6-(4-chlorobenzyl)-2-pyridone, 1-hydroxy-4methyl 6-(2,5-dichlorobenzyl) 3 2-pyridone, 1-hydroxy-4-methyl-6(4-
Bromo-benzyl)-2-pyridone, 1hydroxy-4
-methyl-6-(phenoxymethyl)-2-pyridone,
1-Hydroxy-4-methyl-6-(3-methylphenoxy-methyl)2-pyridone, 1-hydroxy-4-methyl-6(4-sec-butylphenoxy-methyl)-2pyridone, 1-hydroxy-4 -methyl-6(2,4,5
-) lychlorphenoxymethyl)-2=pyridone, 1
-Hydroxy-4-methyl-6(4-bromphenoxy-methyl)-2-pyridone, 1-hydroxy-4-methyl-6-(4-chlorophenylmercapto-methyl)-
2-pyridone, 1-hydroxy-4-methyl-6-(4
-methylphenylmercapto-methyl)-2-pyridone, 1-hydroxy-4-methyl-6-(2-naphthyl)
-2-pyridone, 1-hydroxy-4methyl-6-penzhydryl-2-pyridone, 1-hydroxy-4-methyl-6-furyl-2-pyridone, 1-hydroxy-4-methyl-6-()4 rilvinyl)-2 -pyridone, 1-hydroxy4-methyl-6-styryl-2-pyridone, lhydroxy-4-
Methyl-6-(phenylbutadienyl)-2-pyridone, 1-hydroxy-4phenyl-6-methyl-2-pyridone, 1-hydroxy-4,6-diphenyl-2-pyridone, and the like.

As the salt of the above compound, for example, an organic amine salt can be used. Specifically, ethanolamine, jetanolamine, N-ethylethanolamine, N-methyl-diethanolamine, triethanolamine, diethylamino-ethanol, 2-methyl-n-propanol, Dimethylagonolobanol, 2-
Amino 2-methyl-propanediol, triisopropanediol, ethylenediamine, hexamethylenediamine, morpholine, piperidine, cyclohexylamine, tributylamine, dodecylamine, N,N-dimethyl-dodecylamine, stearylamine, oleylamine, benzyl Amine, dibenzylamine, N-ethylbenzylamine, 5-dimethylstearylamine, N-methyl-morpholine,
Examples include N-methylbiperazine, 4-methylcyclohexylamine, and N-hydroxyethyl-morpholine.

Furthermore, the 1-hydroxy-2-pyridone compound used in the present invention may be an inorganic salt. For example, alkali metal salts such as sodium or potassium salts, ammonium salts, or alkaline earth metal salts such as magnesium or calcium salts can be used. In addition, 2-
Salts with tetravalent cations can also be used.

The amount of the 1-hydroxy-2-pyridone compound is not particularly limited, but one of these compounds may be used alone or two or more may be used in combination to form an amount of 0.01 to 2% of the total shampoo composition.
(% by weight, the same applies hereinafter), particularly preferably 0.5 to 1%.

As the anionic surfactant, which is the second essential component of the present invention, any surfactant that is normally used in shampoo compositions can be used, but the anionic surfactant shown in 6 below (A) to (F) can be used. It is preferable to use a surfactant, and paraffin sulfonate (A) is particularly desirable.

(A) Following formula (II) ps-yama...(II) (However, ps is an acid group of a linear or branched alkyl group sulfonate having 10 to 18 carbon atoms, and M is an alkali metal or alkaline earth metal. baraffin sulfone-1, which represents a metal ion.

(B) Formula (1) % Formula % (1) (In the formula, R3 is an α-olefin having 12 to 16 carbon atoms, a vinylidene type olefin having 12 to 16 carbon atoms, or an inner having 12 to 16 carbon atoms. Olefin, hydroxyalkyl group having 12 to 16 carbon atoms or 10 carbon atoms
-18 straight or branched chain paraffin, M2
is an alkali metal, an alkyl-substituted ammonium or a hydroxyalkyl-substituted ammonium. ) A sulfonate represented by

7 Specifically, as the compound of the above formula 111, for example, α-
Examples include olefin sulfonate (AO3 salt).

(C) Formula (2) % Formula % (2) [In the formula, R4 is an alkyl group having 8 to 18 carbon atoms or an alkylphenyl group having an alkyl group having 5 to 15 carbon atoms, and R6 is the number of carbon atoms. 2 to 3 alkyl groups, m is an average value of 0 to 6, M3 is an alkali metal, alkaline earth metal, alkyl-substituted ammonium or hydroxyalkyl-substituted ammonium. ] A sulfate represented by

Specifically, examples of the compound of the above formula (2) include natural lauryl alcohol polyoxyethylene (m-3) sulfate ester, CIl~CI, aliphatic alcohol polyoxyethylene (m=3) sulfate ester, CI□~ CI3 aliphatic alcohol oxyethylene sulfate, 01□~C1
Examples include ff aliphatic alcohol sulfate varnish 8 tyl and those whose sulfate ester moieties are sodium, potassium salts or alkanolamine salts of sulfuric acid. Among these, polyoxyethylene (m=3) sodium lauryl ether sulfate is particularly preferred.

(D) Formula (3) % Formula % (In the formula, R6 is a non-aromatic hydrocarbon group having an average number of carbon atoms of 9 to 17, M4 and M5 are each an ammonium ion,
alkanolamine ions, lower alkylamine ions, basic amino acid cations, sodium, potassium,
It is an alkaline earth metal or a hydrogen atom. ) N-acylglutamic acid or a derivative thereof.

Specifically, the compound of the above formula (3) or a derivative thereof includes, for example, N-lauroylglutamic acid; N-myristoylglutamic acid; N-valmitoyl glutamic acid; N-acylglutamic acid; and a mixture of these N-acylglutamic acids. , as well as these N-
Examples include monoethanolamine salts, jetanolamine salts, triethanolamine salts, sodium salts, and potassium salts of acylglutamic acid. These can be used as optically active forms or racemates.

(E) The following formula (4) (wherein, R9 is a non-aromatic hydrocarbon group having an average number of carbon atoms of 9 to 17, R is a hydrogen atom, or a linear or branched alkyl group having 1 to 4 carbon atoms. (M6 is ammonium ion, alkanolamine ion, lower alkylamine ion, basic amino acid cation, sodium, potassium, alkaline earth metal, or hydrogen, and p is 1 or 2.) N-acyl-N-alkyl amino acid or a salt thereof.

0 Specific examples of the compound of the above formula (4) or a salt thereof include N-lauroyl-N-ethylglycine, N-lauroyl-N-isopropylglycine, N-lauroylsarcosine, N-myristoylsarcosine, N-bal Mitoylsarcosine, N-lauroyl-N-methyl-β-alanine, N-lauroyl-N-ethyl-β-alanine, N-
Myristoyl-β-alanine, N-valmitoyl-β-
Alanine and mixtures thereof, and their monoethanolamine salts, jetanolamine salts, and triethanolamine salts
Examples include lua≧n salt, sodium salt, and potassium salt.

(F) The following formula (5) [wherein R1 is an alkyl group or alkenyl group having an average number of carbon atoms of 11 to 18, and M7 is an alkali metal such as sodium or potassium, an alkaline earth metal, or an ammonium ion. ] Acylmethyltaurine represented by 1.

Specifically, the compound of formula (5) above includes sodium N
- Cocoyl methyl taurine and the like.

In the present invention, type I or two or more of the above anionic surfactants can be used, and the amount thereof is preferably 5 to 30%, particularly 10 to 25% of the total shampoo composition. If it is less than 5%, it will not be possible to obtain good cleaning power, and if it exceeds 30%, the solubilizing power of the surfactant will be too strong and it will be washed away during cleaning, making it impossible to achieve a sufficient finishing effect. There is.

The quaternary nitrogen-containing cationic compound, which is the third essential component of the present invention, is represented by the following formula (6) (wherein R3゜+ R11+ RI2 and RI3 are both alkyl groups, hydroxyalkyl groups, alkenyl groups polyalkylene oxide or benzyl group, one or two of which are linear alkyl groups, hydroxyalkyl groups, or alkenyl groups having 10 to 24 carbon atoms, and the remainder are methyl groups, ethyl groups, hensyl groups, or groups of the formula −
(czn40), lII or (C31160)n
-11 (However, n and l are each an integer of 1 to 5, and are polyalkylene oxide groups, which may be the same or different. Also, Y- represents an anion.) Examples include quaternary ammonium salt type cationic surfactants represented by:

In this case, specific examples of the quaternary ammonium salt type cationic surfactant include stearyltrimethylammonium chloride, cetyltrimethylammonium chloride, behenyltrimethylammonium chloride, distearyldimethylammonium chloride, dicetyldimethylammonium chloride, dibehenyl Examples include dimethylammonium chloride.

The blending amount of the above cationic compound is 0.1 to 10% of the entire shampoo composition, especially 0.1 to 10% of the total shampoo composition.
．． It is preferably 3 to 5%. If it is less than 0.1%, the finish will be insufficient, and if it exceeds 10%, foaming may deteriorate and liquid stability may deteriorate.

Moreover, a quaternary nitrogen cationic water-soluble polymer can also be used as the quaternary nitrogen-containing cationic compound. Examples of the quaternary nitrogen-containing cationic water-soluble polymer include quaternary nitrogen-containing cellulose ether, quaternary nitrogen-containing starch, quaternary nitrogen-containing polytrialkylachnoethyl methacrylate, quaternary nitrogen-containing polyvinylpyrrolidone, Examples include quaternary nitrogen-containing decomposed keratin, quaternary nitrogen-containing chitin, and chitosan.

The molecular weight of these quaternary nitrogen-containing cationic water-soluble polymers is preferably 2,000 to 3,000,000, and the nitrogen content is preferably 0.2 to 5%.

The quaternary nitrogen-containing cationic water-soluble polymer can be obtained, for example, by reacting a water-soluble polymer with a quaternary nitrogen-introducing agent. Examples of water-soluble polymers include cellulose ether, starch, polyvinylpyrrolidone, and trialkyl agonoethyl methacrylate polymers. Further, examples of the quaternary nitrogen introducing agent include glycidyltrimethylammonium halide, 3-hero-2-hydroxypropyltrialkylammonium halide, and the like.

The amount of these quaternary nitrogen-containing cationic water-soluble polymers is not particularly limited, but from a practical standpoint, one type of the above-mentioned quaternary nitrogen-containing cationic water-soluble polymers may be used alone or in combination of two or more types. and 0.0 of the entire shampoo composition.
It is preferable to add 5% or more, especially 0.1 to 2%.

When it is less than 0.05%, the effect may not be sufficiently exhibited.

The type of water@soluble oil component, which is the fourth essential component of the present invention, is not particularly limited, but ester oil is preferred, and polyoxyalkylene hydrogenated castor oil represented by the following formula (I[[) is particularly preferred. used. In this case, the HLB of the polyoxyalkylene hydrogenated castor oil is preferably in the range of 3 to 17, particularly 6 to 17.

In addition, the following formula (IV) 1 C1+3(CH2)3CHCO(CH2) +5Ctl
+... (IV) CH2Cl.

Cetyl octoate represented by can also be suitably used.

Examples of poorly water-soluble oils other than these include silicone oil, liquid paraffin, squalane, vaseline, setanol, stearyl alcohol, isosetanol, isostearyl alcohol, isopropyl isostearate, and hexyldecyl myristate.

Alpha olefin glycols, animal and plant extract oils such as jojoba oil, castor oil, mink extract, etc. can be mentioned.

Although the amount of these poorly water-soluble oils is not particularly limited,
One of the poorly water-soluble oils listed in item 2 is used alone or in combination of two or more, and the total amount of the shampoo composition is 0.01 to 10%, especially 0.01% to 10% of the total shampoo composition.
It is preferably 1 to 5%.

If it is less than 0.01%, sufficient effects cannot be obtained from the combination;
On the other hand, if it exceeds 10%, not only will the foaming, which is the basic performance of shampoo, deteriorate, but also a stable formulation may not be achieved.

In addition to the above four commandments, the shampoo composition of the present invention includes:
If necessary, components can be added as appropriate depending on the type, purpose of use, etc. For example, nonionic surfactants, amphoteric surfactants, and cationic surfactants other than the above-mentioned quaternary ammonium salt types can be blended. In addition, low temperature stabilizers, water-soluble polymer compounds, viscosity modifiers, PT+ modifiers, antioxidants, emulsifiers, humectants, oils, solubilizers, fragrances, protein derivatives, animal and plant extracts, bactericides, Colorants and the like can be added.

〔Effect of the invention〕

The shampoo composition of the present invention has an excellent anti-itch effect and also has excellent stability at low temperatures.

EXAMPLES Hereinafter, the present invention will be specifically explained with reference to Examples and Comparative Examples, but the present invention is not limited to the Examples below.

Prior to each side, the evaluation methods adopted by each side are shown below.

■ Itching prevention effect After washing your hair with the standard sample below, and washing your hair with 6g of the standard sample again the next day, itching prevention effect 2 and 6 days after washing your hair, and washing your hair with the standard sample in the same way, and the next day Tables 1 and 2. Nakayoshi, one of the 10 test subjects, compared the anti-itching effects two and six days after washing their hair with 6 g of the test sample shown in Figure 8.

The ratings at that time are as follows.

0 Sodium polyoxyethylene lauryl ether sulfate (P: 3> 0 0 Coconut oil fatty acid jetanolamide 0 Anhydrous sodium sulfate 0 Total remaining water 100% 9 Judgment was made by calculating the sum of the scores of 10 test subjects and evaluating based on the following criteria did.

Total base score: 30 to 20 points: [Phase] 19 to 15 points: ◎ 14 to 5 points: 0 4 to -5 points: △ = 6 to -30 points: × ■ Compound mt2 Low-temperature stability evaluation test samples were filled into 50m7+ glass containers and stored at 5° C. for one week, and the appearance was visually observed and evaluated according to the following criteria.

○: Almost no change observed compared to immediately after blending.

△: Some changes in appearance such as slight turbidity are observed.

x: Significant changes in appearance such as separation >2.

0 [Examples 1 to 7, Comparative Examples 1 to 6] Thirteen types of Shampoo & II products having the compositions shown in Table 1 were prepared, and each evaluation was performed according to the above method.

The results are also listed in the same table.

1 (tylpentyl) 2 Pyridone %.

average molecular weight: 100,000) From the results in Table 1, it is clear that the present invention, which uses a 1-hydroxy-2-pyridone compound represented by formula (1), an anionic surfactant, a quaternary nitrogen-containing compound, and a poorly water-soluble oil component, It was found that all of the shampoo m acids had a significantly improved anti-crab effect and good dispersion stability of poorly water-soluble oils.

On the other hand, Comparative Examples 1 and 2 do not contain the first essential component of the present invention, and therefore have inferior crab prevention effects, Comparative Example 3 does not contain the fourth essential component of the present invention, and Comparative Example 4 does not contain the first essential component of the present invention. Third aspect of the present invention
Because these essential ingredients were not blended, the desired performance could not be satisfied.

[Examples 8 to 10] Cleaning compositions having the compositions shown in Table 2 were prepared and evaluated by the method described in "2".

The results are also listed in Table 2.

3 4 From the results in Table 2, the shampoo composition of the present invention retains good performance without impairing anti-itchiness effect and low-temperature stability even when other ingredients are blended with the essential ingredients. It is recognized that

Claims (1)

[Claims] 1. 1-hydroxy- represented by the following general formula (I)
A shampoo composition comprising a 2-pyridone compound, an anionic surfactant, a quaternary nitrogen-containing cationic compound, and a poorly water-soluble oil component. ▲There are mathematical formulas, chemical formulas, tables, etc.▼...(I) [In the formula, R_1 is an alkyl group having 1 to 17 carbon atoms, an alkenyl group having 2 to 17 carbon atoms, 5
a cycloalkyl group having ~8 carbon atoms, a bicycloalkyl group having 7 to 9 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms and an alkyl group having 1 to 8 carbon atoms;
cycloalkyl-alkyl group having 4 carbon atoms (
(However, a part of the hydrogen atoms of the cycloalkyl group may be substituted with an alkyl group having 1 to 4 carbon atoms), an aryl group having 6 to 14 carbon atoms,
Aralkyl groups in which the aryl group has 6 to 14 carbon atoms and the alkyl group has 1 to 4 carbon atoms; the aryl group has 6 to 14 carbon atoms and the alkenyl group has 2 to 4 carbon atoms; arylalkenyl groups having 6 to 14 carbon atoms, aryloxyalkyl or arylmercaptoalkyl groups in which the aryl group has 6 to 14 carbon atoms and the alkyl groups each have 1 to 4 carbon atoms, benzhydryl groups, alkyl groups represents a phenylsulfonylalkyl group having 1 to 4 carbon atoms, a furyl group, or a furylalkenyl group having 2 to 4 carbon atoms. However, the above-mentioned aryl group is an alkyl group in which part of the hydrogen atoms has 1 to 4 carbon atoms, 1 to 4 carbon atoms;
It may also be substituted by an alkoxy group having 4 carbon atoms, a nitro group, a cyano group or a halogen. R_
2 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, an alkynyl group having 2 to 4 carbon atoms, a halogen atom, a phenyl group, or a benzyl group represents. X represents an organic base, an alkali metal ion, an ammonium ion, or a di- to tetravalent cation. 2. The shampoo composition according to claim 1, which contains a paraffin sulfonate represented by the following formula (II) as an anionic surfactant. PS-M_1...(II) (However, PS is an acid group of a linear or branched alkyl group sulfonate having 10 to 18 carbon atoms, and M_1 is an alkali metal or alkaline earth metal ion.)