JPH11209248A - Hair wash - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a hair wash, which prevents hair from being dried as a result of washing, improves wet touch of the hair and keeps these effects for extended periods by making the hair wash include a specific amide compound and anionic surfactant. SOLUTION: This hair wash contains (A) an amide compound having a melting point of 0 to 50 deg.C, preferably 10 to 40 deg.C, [a higher fatty acid amide or N-substituted amide compound having a total carbon number of 30 or more, particularly preferable one being an amide derivative or the like shown by the formula (R<1> and R<2> are each a 1-40C (hydroxylated) hydrocarbon; R<3> is a 1-6C alkylene or single bond; and R<4> is H, a 1-12C alkoxy or 2,3- dihydroxypropyloxy, wherein R<4> is H when R<3> is a single bond], and (B) an anionic surfactant (e.g. an alkyl or alkenyl ether sulfate) preferably at 0.001 to 50 and 0.1 to 30 wt.%, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair cleansing agent which prevents crackling due to hair washing, improves the feeling of moist hair, and maintains these effects for a long time.

[0002]

2. Description of the Related Art As a general trouble after washing hair, deterioration of feel such as increase of pastsuki is mentioned. A possible cause of this is removal of oil from the scalp with a detergent, and oils and the like have been used to cope with an increase in pastsuki.

[0003]

However, since the oil agent is added to suppress puffiness, there has been a problem that the oily feeling, the heavy feeling, and the squeezing are obtained even if the slippage is improved. In addition, these oils did not always provide a sufficient effect of preventing an increase in pastsuki over a long period of time.

[0004] Accordingly, an object of the present invention is to provide a hair cleansing agent which prevents crackling due to hair washing, improves the hair to a moist feeling, and maintains these effects for a long time.

[0005]

Under such circumstances, the present inventors have focused on the intercellular lipids of the hair and made intensive studies. As a result, the change in the physical properties of the hair as described above has been changed with age. It has been found that the change in the physical properties of the hair can be fundamentally improved by applying the deficient component or an analog thereof to the hair, particularly because the balance of the lipid component in the hair is changed. Furthermore, as a result of further study, by using a specific amide compound and an anionic surfactant in combination, it was possible to prevent the puffiness caused by washing the hair and to improve the moist feeling of the hair, and these effects were maintained for a long time. To be able to last for
The present invention has been completed.

That is, according to the present invention, (A) the melting point is from 0 to 5;
An object of the present invention is to provide a hair cleansing agent containing an amide compound at 0 ° C and (B) an anionic surfactant.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The amide compound of the component (A) used in the present invention has a melting point of 0 to 50 ° C, preferably 10 to 50 ° C.
40 ° C. If it is out of this range, it is difficult to stably blend it into the composition. In addition, in this invention, melting | fusing point is JIS-K7121-1987-9-9.
It is indicated by the extrapolated melting point onset temperature measured according to 1 (2).

As such amide compounds, for example, higher fatty acid amides such as isostearic acid amide, isopalmitic acid amide, and isomyristic acid amide, and N-substituted amide compounds having a total carbon number of 30 or more are preferable. Expressions (1) to (3)

[0009]

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(Wherein R ¹ and R ² are the same or different and each represent a hydrocarbon group which may be hydroxylated and has 1 to 40 carbon atoms, and R ³ is a linear or branched chain having 1 to 6 carbon atoms) Represents an alkylene group or a single bond, R ⁴ is a hydrogen atom,
It represents a linear or branched alkoxy group having 1 to 12 carbon atoms or a 2,3-dihydroxypropyloxy group. However, when R ³ is a single bond, R ⁴ is a hydrogen atom. )

[0011]

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(Wherein, R ¹ and R ² have the same meanings as above, R ^3a represents a linear or branched alkylene group having 3 to 6 carbon atoms, and R ^4a represents a straight-chain or alkylene group having 1 to 12 carbon atoms. A chain or branched chain alkoxy group is shown.)

[0013]

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(Wherein R ¹ , R ² and R ³ have the same meanings as described above, and R ^4b is a hydrogen atom, a linear or branched alkoxy group having 1 to 12 carbon atoms or 2,3-epoxypropyl Represents an oxy group, provided that when R ³ is a single bond, R ^4b
Is a hydrogen atom. The amide derivative represented by ()) is preferred.

Of these, represented by the general formula (1)
In the amide derivative, R¹And R ^TwoAre the same or different
And a linear or branched saturated or unsaturated C 1 -C 40
Indicate a hydrocarbon group which may be hydroxylated. R
¹And R^TwoAs methyl, ethyl, propyl, butyric
, Pentyl, hexyl, heptyl, octyl, noni
Le, decyl, undecyl, dodecyl, tridecyl, tet
Ladecyl, pentadecyl, hexadecyl, heptadeci
Octadecyl, nonadecyl, henicosyl, doco
Sill, nonacosyl, triacontyl, isostearyl,
Isoheptadecyl, 2-ethylhexyl, 1-ethylhexyl
Butyl, 8-heptadecyl, 8-heptadecenyl, 8,
11-heptadecadienyl, 2-heptylundecyl,
9-octadecenyl, 1-hydroxynonyl, 1-hydrido
Roxypentadecyl, 2-hydroxypentadecyl, 1
5-hydroxypentadecyl, 11-hydroxyhepta
Decyl and 11-hydroxy-8-heptadecenyl and the like
No.

R ¹ is preferably a linear or branched alkyl or alkenyl group having 8 to 26 carbon atoms, such as octyl, decyl, dodecyl, tetradecyl, hexadecyl, octadecyl, docosyl, triacontyl, isostearyl, 2-ethylhexyl, 2-heptylundecyl and 9-octadecenyl and the like. Particularly preferred hydrocarbon groups for R ¹ are linear or branched alkyl groups having 12 to 22 carbon atoms, such as dodecyl, tetradecyl, hexadecyl, octadecyl, docosyl and methyl-branched isostearyl groups.

R ² is preferably a straight-chain or branched-chain alkyl or alkenyl group having 9 to 25 carbon atoms, such as nonyl, undecyl, tridecyl, pentadecyl, heptadecyl, heneicosyl, nonacosyl, isoheptadecyl, 1-ethylheptyl, 8- Heptadecyl, 8-heptadecenyl, 8,11-heptadecadienyl, 1-hydroxynonyl, 1-hydroxypentadecyl, 2-hydroxypentadecyl, 15-hydroxypentadecyl,
11-hydroxyheptadecyl and 11-hydroxy-
8-heptadecenyl and the like. Particularly preferred hydrocarbon groups for R ² are linear or branched alkyl groups having 11 to 21 carbon atoms, such as undecyl, tridecyl,
Pentadecyl, heptadecyl, heneicosyl and methyl-branched isoheptadecyl groups.

R^ThreeIs a straight or branched chain having 1 to 6 carbon atoms
Represents an alkylene group or a single bond, as an alkylene group
Is, for example, methylene, ethylene, trimethylene, tetrame
Tylene, pentamethylene, hexamethylene, 1-methyl
Ethylene, 1-methyltrimethylene, 2-methyltrime
Tylene, 1,1-dimethylethylene, 1-ethylethylene
, 1-methyltetramethylene, 2-ethyltrimethyle
And the like. R ^ThreeIs a straight-chain having 1 to 6 carbon atoms
Alkylene groups are preferred, of which methylene, ethylene
And trimethylene are particularly preferred.

R ⁴ represents a hydrogen atom, a linear or branched alkoxy group having 1 to 12 carbon atoms or a 2,3-dihydroxypropyloxy group, such as methoxy, ethoxy, propoxy, butoxy, hexyloxy; Octyloxy, decyloxy, 1-methylethoxy and 2-ethylhexyloxy.
R ⁴ is preferably a hydrogen atom, an alkoxy group having 1 to 8 carbon atoms and a 2,3-dihydroxypropyloxy group,
Of these, hydrogen atom, methoxy, ethoxy, propoxy,
Butoxy, 1-methylethoxy, 2-ethylhexyloxy and 2,3-dihydroxypropyloxy groups are particularly preferred.

As the amide derivative represented by the general formula (1), a compound obtained by combining a case where R ¹ , R ² , R ³ and R ⁴ in the general formula are each a group in the above particularly preferred range is mentioned. preferable.

In the amide derivative represented by the general formula (2), R ¹ and R ² have the same meaning as described above, and the same group is preferable. Examples of R ^3a include groups obtained by removing methylene and ethylene from the alkylene group exemplified for R ³ in the amide derivative represented by the general formula (1). R ^3a is preferably a straight-chain alkylene group having 3 to 6 carbon atoms, and among them, trimethylene is particularly preferable. The alkoxy group of R ^4a, include the same groups as R ⁴ in formula are amide derivatives in general formula (1), the same groups are preferred.

The amide derivative represented by the general formula (3)
Where R¹, R^TwoAnd R^ThreeHas the same meaning as above
Then R^4bIs a hydrogen atom, a straight or branched chain having 1 to 12 carbon atoms.
Branched chain alkoxy or 2,3-epoxypropyloxy
Shows a group. R¹, R^TwoAnd R ^ThreeSpecifically,
The same groups as the amide derivatives represented by the general formula (1) are mentioned.
And similar groups are preferred. R^4bHaving 1 to 12 carbon atoms
As the chain or branched chain alkoxy group, a general formula
R of the amide derivative represented by (1)^FourA similar group to
Hydrogen atom, R^FourThe same alkoxy group and 2,
A 3-epoxypropyloxy group is preferred.

The amide derivatives represented by the general formulas (1) to (3) also include solvates represented by hydrates. Among these amide derivatives represented by the general formulas (1) to (3), those represented by the general formula (1) are particularly preferable. The amide derivative represented by the general formula (1) can be produced, for example, according to the method described in JP-A-8-319263. In addition, the amide derivative represented by the general formula (1) can be used as a purified product purified to a purity of 100% or as a mixture having a purity of 70 to 100% containing an intermediate or a reaction by-product without purification. It is excellent in performance and has no problem in safety.

Examples of the amide derivative represented by the general formula (1) obtained by the above method include the following.

[0025]

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[0026]

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[0027]

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These amide compounds can be used alone or in combination of two or more.
The content is preferably from 0.01 to 50% by weight, particularly preferably from 0.0 to 50% by weight.
When it is contained in an amount of 1 to 40% by weight, more particularly 0.1 to 20% by weight, there is no stickiness and it is possible to impart flexibility to hair, which is more preferable.

The anionic surfactant of the component (B) used in the present invention can be used alone or in combination of two or more. Representative examples thereof are as follows.

(1) A linear or branched alkylbenzene sulfonate having an alkyl group having an average of 10 to 16 carbon atoms. (2) Alkyl or alkenyl ether sulfates, particularly having a linear or branched alkyl or alkenyl group having an average of 10 to 20 carbon atoms, and having an average of 0.5 to 8 mol of ethylene oxide and propylene oxide in one molecule , Butylene oxide, ethylene oxide and propylene oxide in a ratio of 0.1 / 9.9 to 9.9 / 0.1, or ethylene oxide and butylene oxide in a ratio of 0.1 /
Those added at a ratio of 9.9 to 9.9 / 0.1. (3) Alkyl or alkenyl sulfates, particularly those having an alkyl or alkenyl group having an average of 10 to 20 carbon atoms. (4) An olefin sulfonate having an average of 10 to 20 carbon atoms in one molecule. (5) Alkane sulfonates having an average of 10 to 20 carbon atoms in one molecule. (6) A saturated or unsaturated fatty acid salt having an average of 10 to 24 carbon atoms in one molecule. (7) It has an alkyl group or an alkenyl group having an average of 10 to 20 carbon atoms, and has an average of 0.5 to 8 moles of ethylene oxide, propylene oxide, butylene oxide, ethylene oxide and propylene oxide in one molecule.
In a ratio of 1 / 9.9 to 9.9 / 0.1, or 0.1 / 9.9 to 0.1 / 9.9 of ethylene oxide and butylene oxide.
Alkyl or alkenyl ether carboxylate added at a ratio of 9.9 / 0.1. (8) α-Sulfone fatty acid salts or esters having an alkyl group or alkenyl group having an average of 10 to 20 carbon atoms. (9) N-acylamino acid type surfactants having an acyl group and a free carboxylic acid residue or a sulfonic acid residue, particularly those having an acyl group having 8 to 24 carbon atoms. (10) A mono- or diester phosphate surfactant having an alkyl or alkenyl group having 8 to 24 carbon atoms or an ethoxylate thereof. (11) Sulfosuccinates such as higher alcohols having 8 to 22 carbon atoms or ethoxylates thereof, or sulfosuccinates derived from higher fatty acid amides. (12) Sulfonates of higher fatty acid monoethanolamide or diethanolamide having 8 to 20 carbon atoms, or ethoxylates thereof. (13) A sulfonate of monoglyceride having 8 to 20 carbon atoms. (14) A salt of a condensate of a higher fatty acid having 8 to 20 carbon atoms and isethionic acid.

Of these, alkyl or alkenyl ether sulfates, alkyl or alkenyl sulfates, and N-acyl amino acid type surfactants having an acyl group and a free carboxylic acid residue or a sulfonic acid residue are particularly desirable. Examples of the counter ion of the anionic residue of these surfactants include alkali metal ions such as sodium and potassium, alkaline earth metal ions such as calcium and magnesium, ammonium ions, and alkanol groups having 2 or 3 carbon atoms. Alkanolamines having 1 to 3 (eg, monoethanolamine, diethanolamine, triethanolamine, triisopropanolamine, etc.) and the like can be mentioned. These anionic surfactants can be mixed alone or in combination of two or more,
The content relative to the total weight in the composition is preferably 1 to 6
0% by weight, more preferably 5 to 30% by weight. When the amount is less than 1% by weight, the detergency is poor and dirt remains on the hair, so that the amide compound is poorly adsorbed on the hair and the effect is not sufficiently exhibited. On the other hand, when the content is more than 60% by weight, irritation becomes high.

Further, in the present invention, by using an amphoteric surfactant and / or a nonionic surfactant,
The effect of preventing crackling, imparting a moist feeling to hair, and the sustainability of the effect are improved. Examples of the surfactant include the following.

[Amphoteric Surfactant] (1) α-Addition type, secondary amide, or tertiary amide type imidazoline amphoteric surfactant having an alkyl group, alkenyl group or acyl group having 8 to 24 carbon atoms. (2) Carbobetaine-based, amidobetaine-based, sulfobetaine-based, hydroxysulfobetaine-based, or amidosulfobetaine-based amphoteric surfactants having an alkyl group, an alkenyl group, or an acyl group having 6 to 24 carbon atoms.

[Nonionic surfactant] (1) Polyoxyalkylene alkyl ether having a linear or branched alkyl or alkenyl group having an average of 10 to 24 carbon atoms and having ethylene oxide, propylene oxide or butylene oxide added thereto Or a polyoxyalkylene alkenyl ether. (2) Ethoxylate of monoglyceride having 8 to 20 carbon atoms. (3) Higher fatty acid sucrose esters having 8 to 20 carbon atoms. (4) Polyglycerol fatty acid esters having an acyl group having 8 to 20 carbon atoms. (5) C8-20 higher fatty acid monoethanolamide or diethanolamide or ethoxylates thereof. (6) Polyoxyethylene hydrogenated castor oil. (7) Polyoxyethylene sorbitan fatty acid ester having an acyl group having 8 to 20 carbon atoms. (8) Polyoxyethylene sorbite fatty acid ester having an acyl group having 8 to 20 carbon atoms. (9) a linear or branched alkyl group having 8 to 18 carbon atoms,
An alkyl saccharide-based surfactant having an alkenyl group or an alkylphenyl group. (10) an alkylamine oxide having a linear or branched alkyl or alkenyl group having 8 to 20 carbon atoms,
Or an alkylamidoamine oxide. (11) A polyhydric alcohol ether compound or ester compound having a linear or branched alkyl or alkenyl group having 8 to 20 carbon atoms.

These surfactants can be used alone or in admixture of two or more, and the content in the hair cleansing agent is preferably 0.1 to 30% by weight, more preferably 0.1 to 30% by weight. 0.5 to 10% by weight.

The hair cleansing composition of the present invention may contain, in addition to the above-mentioned components, components usually incorporated into cosmetics as required, such as oils, higher alcohols, silicones, polymers, penetration enhancers, and antidandruff agents. , Fungicides such as vitamins, preservatives such as parabens, coloring agents such as dyes and pigments, ultraviolet absorbers, plant extracts, astringents, blood circulation promoters, moisturizers, hair restorers, hair restorers, antioxidants Agents, perfumes and the like can be appropriately compounded within a range that does not impair the effects of the present invention. The hair cleansing composition of the present invention can be produced according to a conventional method by mixing the components (A) and (B) and other optional components.

The hair cleansing composition of the present invention comprises a pre-shampoo,
Includes shampoo, rinse-in shampoo and the like. Further, the dosage form may be various forms such as an aqueous solution, an ethanol solution, an emulsion, a suspension, a gel, a liquid crystal, a solid form, etc., depending on the use.

[0038]

By using the hair cleansing agent of the present invention, it is possible to prevent puffiness due to hair washing, improve the moist feeling of hair, and maintain these effects for a long time.

[0039]

Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.

Examples 1 to 5 and Comparative Examples 1 to 3 Shampoos (products 1 to 5 of the present invention and comparative products 1 to 3) having the compositions shown in Table 1 were produced by a conventional method.

[0041]

[Table 1]

Test Example 1 Hair of about 20 cm in length and about 6 g was washed with each of the shampoos obtained above and wiped off the moisture, then dried sufficiently with a drier and felt (slip / finger, no pasatsu, unity). , Sensory evaluation by nine panelists. Evaluation was performed by scoring with a score of -2 to 2 points, and the average value of 9 persons was obtained. The higher the score, the better. Further, the hair was left in a desiccator whose humidity was adjusted to 31% with a saturated calcium chloride aqueous solution for 6 hours, and then the feeling of dryness was evaluated by the above evaluation method. The higher the score, the better. Table 1 shows the results.

From Table 1, the products of the present invention 1 to 5 are comparative products 1 to 3.
It was confirmed that all the items were superior.

Examples 6 to 8 and Comparative Example 4 A rinse-in shampoo having the composition shown in Table 2 (Products 6 to 8 of the present invention)
8 and Comparative product 4) were produced by a conventional method.

[0045]

[Table 2]

Test Example 2 Evaluation was performed in the same manner as in Test Example 1 using each of the rinse-in shampoos obtained above. Table 2 shows the results.

From Table 2, it was confirmed that the products 6 to 8 of the present invention were superior to the comparative product 4 in all items.

Continued on the front page (51) Int.Cl. ⁶ Identification code FI C11D 3:32 1:52)

Claims (7)

[Claims] 1. A hair cleansing composition comprising (A) an amide compound having a melting point of 0 to 50 ° C. and (B) an anionic surfactant. 2. The composition according to claim 1, wherein the component (A) is N-type having 30 or more carbon atoms.
The hair cleansing composition according to claim 1, which is a substituted amide compound. 3. The compound represented by the following general formula (1):
(3) (Wherein R ¹ and R ² are the same or different and each have 1 to 4 carbon atoms)
0 represents an optionally hydroxylated hydrocarbon group; R ³ represents a linear or branched alkylene group having 1 to 6 carbon atoms or a single bond; R ⁴ represents a hydrogen atom;
12 linear or branched alkoxy groups or 2,3-
Shows a dihydroxypropyloxy group. However, when R ³ is a single bond, R ⁴ is a hydrogen atom. ) (Wherein, R ¹ and R ² have the same meanings as described above, R ^3a represents a linear or branched alkylene group having 3 to 6 carbon atoms, and R ^4a represents a linear or branched alkyl group having 1 to 12 carbon atoms. It represents a chain alkoxy group.) (Wherein, R ¹ , R ² and R ³ have the same meanings as described above;
R ^4b represents a hydrogen atom, a linear or branched alkoxy group having 1 to 12 carbon atoms or a 2,3-epoxypropyloxy group. However, when R ³ is a single bond, R ^4b is a hydrogen atom. 3. The hair cleansing composition according to claim 1, which is selected from the amide derivatives represented by the formula (1). 4. The anionic surfactant of component (B) is an alkyl or alkenyl ether sulfate, an alkyl or alkenyl sulfate, and an N-acyl amino acid having an acyl group and a free carboxylic acid residue or a sulfonic acid residue. The hair cleanser according to any one of claims 1 to 3, wherein the hair cleanser is one or more selected from the group consisting of a type anionic surfactant. 5. Component (A) in an amount of 0.001 to 50% by weight,
The hair cleansing composition according to any one of claims 1 to 4, comprising 1 to 60% by weight of the component (B). 6. The hair cleansing composition according to claim 1, further comprising an amphoteric surfactant. 7. The hair cleansing composition according to claim 1, further comprising a nonionic surfactant.