HK1168045B - Hair cleansing composition - Google Patents

Description

Shampoo composition

Technical Field

The present invention relates to a shampoo composition which can rapidly generate foam, inhibit the drying of hair after drying, and make hair smooth.

Background

With the recent enhancement of cleansing and fashion awareness, women's hair is susceptible to physical damage from daily shampooing, styling, blow-drying with a blower, and chemical damage from hair dyeing, bleaching, permanent waving, and the like. The defects of damaged hair are: the dry and astringent feeling is enhanced when the shampoo is rinsed, and the hair is dry and not smooth, and is not easy to comb.

There is disclosed a method for solving these problems, in which a cationic surfactant and a higher alcohol as hair care ingredients are mixed in a shampoo composition, and liquid crystal (an association of the cationic surfactant and the higher alcohol) is adsorbed on hair when the hair is washed, thereby smoothing the hair, and suppressing drying after the hair is dried, thereby giving a smooth feel (see patent documents 1 to 2). However, in this system containing a cationic surfactant, since the cationic surfactant and the anionic surfactant form an anion-cation complex, if the amount of the anionic surfactant is relatively large (about 5% by mass or more), the system has a disadvantage that separation is easy and foam is not easily generated.

In addition, although the shampoo containing the cationic surfactant and the higher alcohol has an advantage of conditioning and smoothing the hair during rinsing, the shampoo containing the anionic surfactant as a main component may not rapidly generate foam and may not generate a large amount of foam (see patent document 3).

The foam improving agents in the shampoo compositions hitherto include fatty acid alkanolamides, monoglycerides, various ionic polymers, and the like. However, these modifiers are not effective when used in a large amount. If the amount is mixed to achieve the desired effect, problems such as stickiness, stiffness and stiffness peculiar to polymers are exposed during repeated shampooing.

Therefore, there is a need to provide a shampoo composition which quickly foams, can produce a large amount of foam, does not give a dry feeling to the hair during rinsing, suppresses drying and dullness after the hair is dried, can smooth the hair, and has good separation stability.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2004-307463

Patent document 2: japanese patent laid-open No. 2001-311099

Patent document 3: japanese patent laid-open No. 2004-292387

Disclosure of Invention

Problems to be solved by the invention

The present invention has been made to solve the above problems and achieve the following object. Namely, the present invention aims to provide a shampoo composition which can rapidly generate foam, generates a large amount of foam, gives no dry feeling to hair during rinsing, suppresses drying and tangling after drying of hair, smoothens hair, and has excellent separation stability. Means for solving the problems

The inventors of the present invention have made extensive studies to solve the above-described problems, and as a result, have come to recognize the following. Namely, a shampoo composition comprising (A) a cationic surfactant, (B) a long-chain fatty alcohol having 12 to 24 carbon atoms, (C) an amphoteric surfactant and (D) a nonionic surfactant having at least one HLB of 3 to 17 selected from polyoxyethylene cetostearyl hydroxymyristyl ether (60EO), polyethylene glycol dilaurate (6EO), polyethylene glycol dilaurate (8EO), polyethylene glycol dilaurate (12EO), polyethylene glycol dilaurate (20EO), polyethylene glycol distearate (3EO), polyethylene glycol distearate (12EO), polyethylene glycol diisostearate (12EO) and polyethylene glycol dioleate (12EO), which has the effects of rapidly generating foam, producing a large amount of foam, preventing the hair from feeling dry and astringent during rinsing, suppressing drying and fluffing after the hair has dried, smoothing the hair, and providing excellent separation stability, thus, the present invention has been completed.

The nonionic surfactant has been conventionally used as a viscosity modifier (see, for example, Asahi Kasei Chemicals Co., Ltd. [ AminoFoamer (registered trademark) technical information (viscosity increase) ]), but the inventors of the present invention have first found that the nonionic surfactant has excellent foamability due to the inclusion of the double-chain nonionic surfactant.

[ solution 1]

R¹-O-(CH₂-CH₂-O)_n-R²General formula (1)

[ solution 2]

R³-COO-(CH₂-CH₂O)_n-R⁴General formula (2)

(R in the above general formula (1) and general formula (2)¹～R⁴Is any one of C12-18 linear or branched alkyl or alkenyl, and n is an integer of 3-60, wherein the average molar number of added ethylene oxide. )

The present invention is based on the above knowledge of the inventors, and means for solving the above problems are as follows. Namely:

<1> a shampoo composition comprising (A) a cationic surfactant, (B) a long-chain fatty alcohol having 12 to 24 carbon atoms, (C) an amphoteric surfactant, and (D) at least one nonionic surfactant having an HLB of 3 to 17 selected from the group consisting of polyoxyethylene cetostearyl hydroxymyristyl ether (60EO), polyethylene glycol dilaurate (6EO), polyethylene glycol dilaurate (8EO), polyethylene glycol dilaurate (12EO), polyethylene glycol dilaurate (20EO), polyethylene glycol distearate (3EO), polyethylene glycol distearate (12EO), polyethylene glycol diisostearate (12EO), and polyethylene glycol dioleate (12 EO).

<2> the shampoo composition according to <1> wherein the content of the component (D) is 0.05 to 2% by mass, and the mixing ratio of the component (A), the component (B) and the component (D) is represented by [ (A) + (B) ]/(D): 4 to 170 in terms of mass ratio.

<3> the shampoo composition according to any one of <1> to <2> wherein the mixing ratio of the component (A) to the component (B) is 1.5 to 6 in terms of the mass ratio (B)/(A).

<4> the shampoo composition according to any one of <1> to <3> further comprising (E) at least one of a silicone oil and an ester oil which is liquid at room temperature.

<5> the shampoo composition according to any one of <1> to <4>, wherein the component (A) is at least one selected from the group consisting of alkyl quaternary ammonium salts, quaternary ammonium salts having at least one ester group in the molecule, amidoamine-type surfactants, amine-type surfactants, guanidine derivatives or salts thereof, and amino acid-type cationic surfactants, and the component (C) is at least one selected from the group consisting of alkyl betaine-type surfactants, amidobetaine-type surfactants, sulfobetaine-type surfactants, hydroxysulfobetaine-type surfactants, amidosulfobetaine-type surfactants, phosphobetaine-type surfactants, imidazolinebetaine-type surfactants, aminopropionic acid-type surfactants, and amino acid-type surfactants.

<6>As described above<4>To<5>The shampoo composition as described in any one of the above wherein the silicone oil has a kinematic viscosity of 500 mm at 25 ℃²More than s.

<7> the shampoo composition according to any one of <1> to <6> wherein the content of the component (A) is 0.5% by mass to 5% by mass.

<8> the shampoo composition according to any one of <1> to <7> wherein the content of the component (B) is 1 to 10% by mass.

<9> the shampoo composition according to any one of <1> to <8> wherein the content of the component (C) is 5% by mass to 20% by mass.

ADVANTAGEOUS EFFECTS OF INVENTION

The present invention solves the above-described problems in the past, and can achieve the above-described object, i.e., provide a shampoo composition which can rapidly generate foam, generates a large amount of foam, does not give a dry and harsh feeling to the hair during rinsing, suppresses drying and tangling after the hair is dried, smoothens the hair, and has excellent separation stability.

Detailed Description

(shampoo composition)

The shampoo composition contains at least (A) a cationic surfactant, (B) a long-chain fatty alcohol having 12-24 carbon atoms, (C) an amphoteric surfactant, and (D) a specific nonionic surfactant, and further contains at least one of a silicone oil and an ester oil which is liquid at room temperature, and other components, as required.

< component (A): cationic surfactant >

The component (A) is used for the purpose of suppressing drying of hair after drying and smoothing hair.

The component (a) is not particularly limited as long as it can be mixed in the shampoo composition, and may be appropriately selected according to the purpose, but a cationic surfactant having a hydrocarbon group having 12 or more carbon atoms is preferable. If the number of carbon atoms of the component (a) is less than 12, the component (a) may be irritating to the skin and may be difficult to form an association (liquid crystal) with a long-chain fatty alcohol. These cationic surfactants may be used alone or in combination of two or more.

The cationic surfactant having a hydrocarbon group having 12 or more carbon atoms can be interrupted by functional groups such as-O-, -CONH-, -COO-, and the like. In the present specification, the carbon number 12 includes carbon atoms in functional groups such as-CONH-, -COO-, and the like.

The cationic surfactant having a hydrocarbon group having 12 or more carbon atoms is not particularly limited as long as it can be mixed in the shampoo composition, and may be appropriately selected according to the purpose. For example, quaternary ammonium salts having at least one ester group in the molecule, quaternary ammonium salts represented by any one of the following general formulae (4), (6) and (8), amidoamine surfactants, amine surfactants, guanidine derivatives or salts thereof, and amino acid cationic surfactants can be suitably selected.

Alkyl quaternary ammonium salts

The quaternary alkyl ammonium salt is not particularly limited and may be appropriately selected according to the purpose, and examples thereof include inorganic acid salts such as hydrochloride, bromate, sulfate and phosphate; organic acid salts such as glycolate, acetate, lactate, succinate, tartrate, citrate, acidic amino acid salt, higher fatty acid salt, pyroglutamate, p-toluenesulfonate, and the like. Among these, the alkyl quaternary ammonium salt is preferably a compound represented by the following general formula (3).

The component (a) containing the alkyl quaternary ammonium salt is usually contained in the form of a salt.

[ solution 7]

R in the above general formula (3)³And R⁴Is a straight or branched alkyl or alkenyl group. Wherein, R is as defined above³And R⁴Straight chain alkyl is particularly preferred. And R as mentioned above³And R⁴One of them may be a methyl group or an ethyl group. R mentioned above³And R⁴May be the same or different.

As the above-mentioned R³And R⁴The number of carbon atoms of (A), the above-mentioned R³And R⁴At least one of them has preferably 12 to 28 carbon atoms, more preferably 16 to 24 carbon atoms, and still more preferably 22 carbon atoms.

R⁵And R⁶Methyl or ethyl, which may be the same or different.

Z^-Represents an anion, and may include, for example, CH₃SO₄ ^-、C₂H₅8O₄ ^-、Cl^-、Br^-And the like.

Examples of the quaternary alkylammonium salt represented by the general formula (3) include behenyltrimethylamine chloride and behenyldimethylamine chloride.

Quaternary ammonium salts

The quaternary ammonium salt having at least one ester group in the molecule is preferably selected from compounds represented by the following general formula (4).

[ solution 8]

In the above general formula (4), R⁷Is at least one ester group, preferably a straight chain or branched chain alkyl or alkenyl group containing 1-3 ester groups.

R is as defined above⁷The number of carbon atoms of (C) is preferably 12 to 26.

R⁸Is any one of a methyl group, an ethyl group and a hydroxyalkyl group having 1 to 4 carbon atoms. R is as defined above⁸May be the same or different from each other.

And, the above R⁷And R⁸May be the same or different.

X-represents an anion, and is exemplified by CH₃SO₄ ^-、C₂H₅SO₄ ^-、Cl^-、Br^-And the like.

Examples of the quaternary ammonium salts having one ester group in the molecule include compounds represented by the following general formula (5).

[ solution 9]

In the above general formula (5), R⁹Represents a linear or branched alkyl group or alkenyl group having 9 to 23 carbon atoms. Wherein R is as defined above⁹The alkyl group or alkenyl group is preferably a straight-chain alkyl group or alkenyl group having 13 to 21 carbon atoms. As described aboveR⁹Specifically, a residue obtained by removing a carboxyl group from a fatty acid such as stearic acid, palmitic acid, myristic acid, oleic acid, elaidic acid or the like is preferable.

Examples of the quaternary ammonium salts having 2 ester groups in the molecule include compounds represented by the following general formula (6).

[ solution 10]

R in the above general formula (6)⁷、R⁸And X^-The same as in the above general formula (4). R is as defined above⁷And R⁸May be the same or different, respectively.

Among the compounds represented above, the quaternary ammonium salts having two ester groups in the molecule are preferably compounds represented by the following general formula (7).

[ solution 11]

R in the above general formula (7)⁹The same as that represented by the above general formula (5). R is as defined above⁹Each may be the same or different.

R is as defined above⁹A linear alkyl group or alkenyl group having 13 to 21 carbon atoms is preferable. Specifically, R is as defined above⁹The residue is preferably one obtained by removing a carboxyl group from a fatty acid such as stearic acid, palmitic acid, myristic acid, oleic acid, elaidic acid, or the like.

Examples of the quaternary ammonium salts having 3 ester groups in the molecule include compounds represented by the following general formula (8).

[ solution 12]

R in the above general formula (8)⁷、R⁸And X^-The same as in the above general formula (4).

R is as defined above⁷And R⁸May be the same or different, respectively.

Among these, the quaternary ammonium salts having 3 ester groups in the molecule are preferably compounds represented by the following general formula (9).

[ solution 13]

R in the above general formula (9)⁹The same as that represented by the above general formula (5). R is as defined above⁹May be the same or different from each other. R is as defined above⁹A linear alkyl group or alkenyl group having 13 to 21 carbon atoms is preferable. Specifically, R is as defined above⁹The residue is preferably one obtained by removing a carboxyl group from a fatty acid such as stearic acid, palmitic acid, myristic acid, oleic acid, elaidic acid, or the like.

R in the above general formulae (3) to (9)⁷、R⁸、R⁹And X^-With R in other formulae⁷、R⁸、R⁹And X^-Are independent of each other.

R is as defined above⁹The residue is a residue obtained by removing a carboxyl group from a fatty acid having 10 to 24 carbon atoms, and more preferably a residue derived from any of a saturated fatty acid, an unsaturated fatty acid, a straight-chain fatty acid and a branched-chain fatty acid.

R is as defined above⁹In the case of unsaturated fatty acids, cis-and trans-isomers exist. The ratio of the cis-form to the trans-form (cis-form/trans-form) is not particularly limited, and may be determined according to the purposeThe amount of the inorganic filler is preferably 25/75 to 80/20, more preferably 40/60 to 80/20 in terms of mass ratio.

As the above-mentioned R⁹Examples of the basic fatty acid include stearic acid, palmitic acid, myristic acid, lauric acid, oleic acid, elaidic acid, linoleic acid, and partially hydrogenated palm oil fatty acid (having an iodine value of 10 to 60), and partially hydrogenated tallow fatty acid (having an iodine value of 10 to 60). Among them, oleic acid, elaidic acid, linoleic acid, and stearic acid are preferable, and stearic acid, palmitic acid, myristic acid, oleic acid, linoleic acid, and the like derived from plants are particularly preferable in combination in a predetermined amount.

The above combination is not particularly limited and may be appropriately selected according to the purpose, but it is preferable to use a fatty acid composition prepared as follows: the ratio of saturated fatty acids to unsaturated fatty acids (saturated fatty acids/unsaturated fatty acids) is 95/5-50/50 by mass ratio, the ratio of cis-forms to trans-forms (cis-forms/trans-forms) is 40/60-80/20 by mass ratio, the ratio of carbon atoms 18 is 60% by mass or more, the ratio of fatty acids having 20 carbon atoms is 2% by mass or less, and the ratio of fatty acids having 22 carbon atoms is 1% by mass or less.

The method for synthesizing the quaternary ammonium salt containing 1 to 3 ester groups in the molecule is not particularly limited, and may be appropriately selected according to the purpose. For example, the fatty acid composition or the fatty acid methyl ester composition may be synthesized by a condensation reaction of triethanolamine with the fatty acid composition or the fatty acid methyl ester composition, followed by a quaternization reaction with a quaternizing agent such as dimethyl sulfate.

Amide amine type surfactants

The amide amine surfactant may, for example, be a compound represented by the following general formula (10).

[ solution 14]

R in the above general formula (10)¹⁰Represents a linear or branched alkyl or alkenyl group.

R is as defined above¹⁰The number of carbon atoms of (b) is preferably 11 to 27, more preferably 15 to 23, and still more preferably 21.

R¹¹Is an alkyl group having 1 to 4 carbon atoms, preferably a methyl group or an ethyl group.

n represents an integer of 2 to 4.

The amidoamine-type surfactant represented by the above general formula (10) may be, for example: diethylaminoethylamide stearate, dimethylaminoethylamide stearate, diethylaminoethylamide palmitate, diethylaminopropylamide coconut fatty acid, dimethylaminoethylamide palmitate, diethylaminoethylamide myristate, dimethylaminoethylamide myristate, diethylaminoethylamide behenate, dimethylaminoethylamide behenate, diethylaminopropylamide stearate, dimethylaminopropylamide stearate, diethylaminopropylamide palmitate, dimethylaminopropylamide palmitate, diethylaminopropylamide myristate, dimethylaminopropylamide myristate, diethylaminopropylamide behenate, dimethylaminopropylamide behenate, and dimethylaminopropylamide behenate. These may be used singly or in combination.

Among them, the amidoamine-type surfactants are particularly preferably stearic acid dimethylaminopropyl amide, stearic acid diethylaminoethyl amide, behenic acid diethylaminoethyl amide, and behenic acid dimethylaminopropyl amide.

These surfactants are generally present in the form of the various salts described above. Among them, preferred are the acidic amino acid salts, citrate salts, hydrochloride salts.

In addition, 1 kind of salt used in neutralization may be used alone, or two or more kinds may be used in combination.

Amine-type surfactants

Examples of the amine-type surfactant include stearyloxypropyldimethylamine and the like.

The amine-type surfactant described above is usually contained in the form of a salt. Among them, preferred are the acidic amino acid salts, citrate salts, hydrochloride salts. The salts for neutralization may be used singly or in combination of two or more kinds.

Derivatives of guanidine or salts thereof

Examples of the guanidine derivative or a salt thereof include guanidine derivatives represented by the following general formula (11) and salts thereof.

[ solution 15]

R in the above general formula (11)¹²Represents a linear or branched alkyl or alkenyl group.

R is as defined above¹²The number of carbon atoms of (A) is preferably 11 to 27, more preferably 11 to 21.

A is a linear or branched alkylene or alkenylene group.

The number of carbon atoms of A is not particularly limited, and may be appropriately selected according to the purpose, and is preferably 1 to 10, more preferably 2 to 6.

t is an integer of 1 to 5, and when t is 2 or more, A in each block may be the same or different.

R mentioned above¹²May be, for example, C₁₁H₂₃ ^-、C₁₂H₂₅ ^-、C₁₃H₂₇ ^-、C₁₄H₂₉ ^-、C₁₅H₃₁ ^-、C₁₆H₃₃ ^-、C₁₇H₃₅ ^-、(C₈H₁₇)2CH^-、4-C₂H₅C₁₅H₃₀ ^-And the like.

Examples of the substituent A in the general formula (11) include methylene, ethylene, propylene, butylene, pentylene, hexylene, isopropylene, 2-pentylene, and 2-ethylbutylene.

The guanidine derivative represented by the above general formula (11) is usually present in the form of the above-mentioned various salts. Preferred among these are the hydrochloride, bromate, acetate, glycolate, citrate and acidic amino acid salts.

Amino acid type cationic surfactants

The above-mentioned amino acid type cationic surfactant is not particularly limited and may be appropriately selected according to the purpose, and examples thereof include lower (C1-8) alkyl ester salts of mono-N-long chain (C12-22) acyl basic amino acids.

Examples of the basic amino acid constituting the above-mentioned amino acid type cationic surfactant include natural amino acids such as ornithine, lysine and arginine. In addition, synthetic amino acids such as α, γ -diaminobutyric acid can also be used. These may be optically active substances or racemates.

The acyl group of the amino acid type cationic surfactant is a saturated or unsaturated higher fatty acid residue having 12 to 22 carbon atoms. The acyl group may be natural or synthetic. Specific examples of the acyl group include a single fatty acid residue such as a lauroyl group, a myristoyl group, a palmitoyl group, and a stearoyl group; natural mixed higher fatty acid residues such as coconut oil fatty acid residues and tallow higher fatty acid residues.

The lower alkyl ester component is not particularly limited and may be suitably selected according to the purpose, but among them, methyl ester, ethyl ester, propyl ester, butyl ester, pentyl ester, hexyl ester, heptyl ester, octyl ester and the like are preferable.

The lower alkyl ester component described above, typically contained in the form of a salt. Specific examples thereof include inorganic salts such as hydrochloride, bromate, sulfate and phosphate; organic acid salts such as glycolate, acetate, lactate, succinate, tartrate, citrate, acidic amino acid salt, higher fatty acid salt, pyroglutamate, p-toluenesulfonate and the like. Among them, preferred are the hydrochloride, L-or DL-pyrrolidone carboxylate, acidic amino acid salt forms.

Among the above-mentioned alkyl quaternary ammonium salts, quaternary ammonium salts containing at least one ester group in the molecule, amidoamine surfactants, amine surfactants, guanidine derivatives or salts thereof, and amino acid cationic surfactants, alkyl quaternary ammonium salts are preferable as the component (a). Among them, behenyldimethylamine chloride is particularly preferable from the viewpoint of suppressing drying and fluffing of the hair after drying and smoothing the hair.

In the shampoo composition, the total content of the component (a) is not particularly limited, and may be appropriately selected according to the purpose. However, it is preferably 0.5 to 5% by mass based on the total amount of the shampoo composition. From the viewpoint of obtaining a sufficient amount of foam, suppressing the volume of hair after drying, and smoothing the hair, 1 to 4% by mass is more preferable.

If the content of the component (a) is less than 0.5% by mass, the rapidity of foaming is deteriorated, sufficient foam cannot be obtained, the hair is not prevented from being fluffy after drying, and the hair cannot be smoothed; if the amount exceeds 5% by mass, the hair tends to be less likely to be fluffy after drying, and the smoothness of the hair tends to be lowered, resulting in poor separation stability.

< component (B): c12-24 Long-chain fatty alcohol >

The component (B) is a long-chain fatty alcohol having 12 to 24 carbon atoms, and is not particularly limited as long as it can be mixed in the shampoo composition, and may be appropriately selected according to the purpose. These long-chain fatty alcohols may be used alone in 1 kind, or in combination of two or more kinds.

When the component (B) is a long-chain fatty alcohol having 12 to 24 carbon atoms, a liquid crystal structure can be formed in the shampoo composition separately from the component (A). The long-chain fatty alcohol having 12 to 24 carbon atoms may, for example, be a higher alcohol represented by the following general formula (12).

[ solution 16]

R¹³-OH general formula (12)

In the above general formula (12), R¹³The aliphatic hydrocarbon group has 12 to 24 carbon atoms, and preferably a linear or branched alkyl or alkenyl group having 18 to 22 carbon atoms. Wherein, R is as defined above¹³Particularly preferred are straight chain alkyl groups. If the number of carbon atoms in the component (B) is less than 12, the separation stability may be deteriorated.

Examples of the long-chain fatty alcohol having 12 to 24 carbon atoms represented by the general formula (12) include myristyl alcohol, cetyl alcohol, 2-hexyldecanol, cetostearyl alcohol, stearyl alcohol, isostearyl alcohol, octyldodecanol, arachidyl alcohol (arachidyl alcohol 1), behenyl alcohol, hardened rapeseed oleyl alcohol, elaidyl alcohol, linoleyl alcohol, pyrolyl alcohol, glycerol alcohol, cholesterol, and phytosterol. Among them, from the viewpoint of separation stability, alcohols having 16 to 22 linear carbon atoms (cetyl alcohol, stearyl alcohol, behenyl alcohol, and the like) are preferable, and stearyl alcohol and behenyl alcohol are particularly preferable.

The content of the component (B) in the shampoo composition is not particularly limited, and may be appropriately selected according to the purpose, and is preferably 1 to 10% by mass, and from the viewpoint of the amount of foam, the hair being less likely to be fluffy, and the separation stability, is preferably 4 to 8% by mass. If the content of the component (B) is less than 1% by mass, the hair may not be prevented from being fluffed after drying, and smoothness or separation stability may not be imparted; if the amount exceeds 10% by mass, smoothness after drying of the hair and prevention of fluffing of the hair may be impaired.

The mixing ratio ((B)/(a)) of the component (a) and the component (B) is not particularly limited and may be appropriately selected according to the purpose, and is preferably 1 to 7 by mass, and more preferably 1.5 to 6 by mass from the viewpoint of suppressing the volume and smoothness of hair after drying. If the mass ratio is less than 1, smoothness, separation stability, etc. may not be imparted to the hair; if the amount exceeds 7, the hair may not be smooth after drying, and the separation stability may be deteriorated.

< component (C): amphoteric surfactant >

The component (C) is not particularly limited, and may be appropriately selected according to the purpose, and examples thereof include alkyl betaine type active agents, amide betaine type active agents, sulfobetaine type active agents, hydroxysulfobetaine type active agents, amide sulfobetaine type active agents, phosphobetaine type active agents, imidazolinebetaine type active agents, aminopropionic acid betaine type active agents, and amino acid type active agents. Among them, preferred are betaine type surfactants such as lauric acid type betaine, coconut oil fatty acid aminopropyl betaine, coconut oil fatty acid dimethylamino acetic acid betaine, lauryl hydroxy sulfobetaine, and 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine, and more preferred are lauramidopropyl betaine and lauryl dimethylamino acetic acid betaine. The active agent may be used alone in 1 kind, or in combination of two or more kinds.

The content of the component (C) in the shampoo composition is not particularly limited, and may be appropriately selected according to the purpose, but is preferably 5 to 20% by mass, and is preferably 8 to 15% by mass, from the viewpoints of rapid foaming, an amount of foam generation, smoothness after drying of hair, and less tendency to fluffy hair after drying.

If the content of the component (C) is less than 5% by mass, the foam-generating performance, which is a main purpose of detergent performance, is low, and therefore the foam cannot spread over the hair, and the effects of smoothing the hair after drying and suppressing the hair from being fluffy after drying may not be satisfactory; if the amount exceeds 20% by mass, the smoothness of the hair and the prevention of the hair from being fluffy after drying may be impaired, and the separation stability may be poor.

< component (D): nonionic surfactant >

The main purpose of the component (D) is to accelerate the generation rate of foam and increase the amount of foam generated.

The component (D) is a nonionic surfactant having at least one HLB 3-17 selected from the group consisting of polyoxyethylene cetostearyl hydroxymyristyl ether (60EO), polyethylene glycol dilaurate (6EO), polyethylene glycol dilaurate (8EO), polyethylene glycol dilaurate (12EO), polyethylene glycol dilaurate (20EO), polyethylene glycol distearate (3EO), polyethylene glycol distearate (12EO), polyethylene glycol diisostearate (12EO) and polyethylene glycol dioleate (12 EO).

The component (D) is a double-chain nonionic surfactant having a linear, unsaturated or branched hydrocarbon group having 12 to 18 carbon atoms in 2 positions in the molecule. And a part of hydrogen atoms of the hydrocarbon group may be substituted with hydroxyl groups.

Specific examples of the component (D) are preferably polyoxyethylene cetostearyl hydroxymyristyl ether (60EO, HLB17, Elfacos (エルフアコス) GT282S (product of LionaKzo Co., Ltd.)), and the like, polyethylene glycol dilaurate (6EO, HLB ═ 7, EMALEX300di-L), polyethylene glycol dilaurate (8EO, HLB ═ 8, EMALEX eg-di-L), polyethylene glycol dilaurate (12EO, HLB ═ 10, EMALEX600di-L), polyethylene glycol dilaurate (20EO, HLB ═ 12, EMALEX1000di-L), polyethylene glycol distearate (3EO, HLB ═ 3, EMALEX eg-di-S), polyethylene glycol distearate (12EO, HLB ═ 8, EMALEX600di-S), polyethylene glycol diisostearate (12EO, HLB ═ 8, EMALEX600 di-isox), polyethylene glycol dioleate (12EO, HLB ═ 8, EMALEX600 di-O). These may be used alone in 1 kind, or 2 or more kinds may be used in combination.

The HLB is not particularly limited as long as it is 3 to 17, and may be appropriately selected according to the purpose. From the viewpoint of rapid generation of foam and the amount of foam, suppression of the volume of hair after drying, and stability in separation, 7 to 17 is preferable. If the above HLB is less than 3, the foaming rate, separation stability, and the like may be deteriorated; if the amount exceeds 17, the volume of the hair may not be suppressed.

The content of the component (D) in the shampoo composition is not particularly limited, and may be appropriately selected according to the purpose. The content is preferably 0.05% by mass to 2% by mass, and more preferably 0.2% by mass to 1% by mass from the viewpoint of rapid generation of foam and the amount of foam. If the amount of the component (D) is less than 0.05% by mass, the effect of rapidly generating foam and generating sufficient foam may not be obtained; if the amount exceeds 2% by mass, the hair may become fluffy after drying, and the separation stability may be deteriorated.

The proportions of the component (a), the component (B) and the component (D) are not particularly limited and may be appropriately selected depending on the purpose. Preferably, the mass ratio is [ (A) + (B) ]/(D) ] -4-170; from the viewpoint of rapid generation of foam and the amount of foam generated, more preferably 8 to 43. If the above mass ratio [ (a) + (B) ]/(D) ] is less than 4, the hair may be dried and then fluffed, and the separation stability may be poor; if the amount exceeds 170, the rate of generation of foam, the amount of foam generated, and the like may be deteriorated.

The component (D) is presumed to form dense micelles between the component (A) and the component (C) to stabilize the system, and to increase the foaming rate and the amount of foam.

The HLB of the component (D) can be determined by the following formula.

HLB value 7+11.7log (Mw/Mo)

(Mw represents the molecular weight of the hydrophilic moiety of component (D.) Mo represents the molecular weight of the lipophilic moiety of component (D).)

< (E) component: silicone oil, ester oil which is liquid at ordinary temperature >

(E) The main purpose of the ingredients is preferably to inhibit drying and fluffing of the hair after it has dried and to smooth the hair.

The component (E) is at least one of a silicone oil and an ester oil which is liquid at room temperature.

-silicone oil-

The silicone oil is not particularly limited, and may be appropriately selected according to the purpose, and examples thereof include highly polymerized dimethylpolysiloxane and an emulsion thereof, and aminosilicone adhesive (アミノガムシリコ - ン).

The kinematic viscosity of the highly polymerized dimethylpolysiloxane or its emulsion is preferably 500 ten thousand mm from the viewpoint of suppressing the hair from being fluffy after drying and smoothing the hair²More preferably 1,000 mm/s or more²More than ten thousand per second.

Examples of the highly polymerized dimethylpolysiloxane and the emulsion thereof include dimethylpolysiloxanes such as trimethylsilyl-terminated dimethylpolysiloxane and silanol-terminated dimethylpolysiloxane having a kinematic viscosity at 25 ℃ of 500 ten thousand mm²Materials above/s and emulsion thereof, and the like. One of them may be used, or 2 or more of them may be used in combination.

The silicone oil may be mixed with other silicone compounds (e.g., low-kinematic-viscosity dimethylpolysiloxane, cyclic silicone, EO-modified silicone, amino-modified silicone, etc.)

Specific examples of the silicone oil include silicone emulsion A (manufactured by Okagaku Kogyo Co., Ltd.; silicone emulsion (6), and dimethyl silicone, having a kinematic viscosity of 1,000 ten thousand mm²(s) 60% by mass as solids), silicone emulsion B (product of shin-Etsu chemical Co., Ltd: KM-903, silicone oil dimethyl silicone, kinematic viscosity 2,000 ten thousand mm²And/s, 60 mass% in terms of solid content).

Specific examples of the above-mentioned aminosilicone adhesive include a highly polymerized dimethylsiloxane-methylaminopropylsiloxane copolymer (X-52-2328, manufactured by shin-Etsu chemical Co., Ltd., aminopropyldimethylsiloxane, having a solid content of 12 mass%), a highly polymerized dimethylsiloxane-methylaminopropylsiloxane copolymer (X-52-2362, manufactured by shin-Etsu chemical Co., Ltd., aminopropyldimethylsiloxane, having a solid content of 12 mass%), KF-8017 (manufactured by shin-Etsu chemical Co., Ltd., solid content of 10 mass%), KF-8018 (manufactured by shin-Etsu chemical Co., Ltd., solid content of 10 mass%), and KF-8020 (manufactured by shin-Etsu chemical Co., Ltd., solid content of 20 mass%).

The kinematic viscosity can be measured, for example, by the following method.

A1 g/100mL toluene solution of silicone was prepared, and the specific viscosity,. eta.sp (25 ℃ C.) was determined by the following calculation formula (1). Then, the resulting mixture was substituted into Huggins' relational expression shown in the following equation (2) to obtain intrinsic viscosity [ η ]. Huggins' constants were as described in, for example, Muyoda, Japan, 77588[1956 ]. Then, [ η ] was substituted into the formula A.Kolorloloov shown in the following equation (3) to determine the molecular weight. Finally, the kinematic viscosity η of silicone can be obtained by substituting M into the a.j.barry formula shown in the following calculation formula (4).

η sp ═ (η/η 0) -1 … calculation formula (1)

ηsp＝〔η〕+K’〔η〕²… calculation formula (2)

〔η〕＝0.215×10^-4M^0.65… calculation formula (3)

logη＝1.00+0.0123M^0.5… calculation formula (4)

In the above calculation formula (1), η 0 represents the viscosity of toluene, and η represents the viscosity of the solution.

The above-mentioned eta 0 and eta are measured by the viscometry method 1 of the standard general test method for cosmetic raw materials.

Liquid ester oils

Specific examples of the ester oil which is liquid at ordinary temperature (15 to 25 ℃) include propylene glycol dicaprate, propylene glycol monocaprylate, propylene glycol dicaprylate, sorbitan sesquioleate, octyldodecyl lactate, hexyl laurate, myristyl caprylate, palmityl caprylate, stearyl caprylate, cetyl isooctanoate, isononyl isononanoate, tridecyl isononanoate, isopropyl myristate, butyl myristate, myristyl myristate, 2-octyldodecyl myristate, 2-hexyldecyl stearate, isopropyl palmitate, isostearyl palmitate, octyl palmitate, 2-hexyldecyl palmitate, cetyl palmitate, methyl stearate, butyl stearate, hexyl stearate, octyl stearate, stearyl stearate, 2-hexyldecyl isostearate, isopropyl palmitate, stearyl palmitate, hexyl stearate, stearyl stearate, hexyl stearate, and isopropyl stearate, Isopropyl isostearate, octyl hydroxystearate, ethyl oleate, oleyl oleate, octyl decyl oleate, octyl eicosenoate, isopropyl lanolate, octyl dodecyl lanolate, ethyl linoleate, isopropyl linoleate, dioctyl succinate, diethoxyethyl succinate, diisopropyl adipate, diisopropyl dimer acid, diethyl sebacate, diisopropyl sebacate, diisostearyl malate, tri-2-ethylhexyl citrate, 2-heptyl undecyl adipate, diethoxyethyl succinate, propyl heptyl caprylate and the like.

Among them, the component (E) is preferably one having a kinematic viscosity of 500 ten thousand mm from the viewpoint of smoothing hair and suppressing the hair from being fluffy after drying²More preferably 1,000 ten thousand mm/s or more²Silicone emulsion (6) with a concentration of at least one second, aminosilicone gel (X52-2362), and propylheptyl octanoate.

The form of the component (E) is not particularly limited, and may be suitably selected according to the purpose, and examples thereof include oils and emulsions.

The emulsifier and the emulsification method in the emulsification of the component (E) are not particularly limited and may be appropriately selected according to the purpose.

The content of the component (E) in the shampoo composition is not particularly limited and may be appropriately selected according to the purpose, but is preferably 0.1 to 3% by mass from the viewpoint of smoothing hair and suppressing the volume of hair after drying; from the viewpoint of increasing the rate of foam generation, the amount of foam, and suppressing the hair from being dried, the amount is more preferably 0.1 to 2.5% by mass. If the amount of the component (E) is less than 0.1% by mass, the effect of suppressing the hair from being fluffy after drying and smoothing the hair may not be satisfactory; if the amount exceeds 3% by mass, the quick foamability may be poor and the amount of foam may be small.

< other ingredients >

The other components are not particularly limited and may be appropriately selected according to the purpose within the range not impairing the effect of the present invention, and examples thereof include various additional components, perfumes, perfume compositions and the like which are commonly used in general shampoo compositions.

The above-mentioned additive components are not particularly limited and may be appropriately selected depending on the purpose, and examples thereof include nonionic surfactants (single-chain nonionic surfactants) such as hydrocarbons such as liquid paraffin and squalane, vegetable oils such as camellia oil, almond oil and jojoba oil, polyoxyethylene alkyl ethers, glycerin fatty acid esters other than the component (E), sucrose fatty acid esters, and polyglycerin fatty acid esters other than the component (D); gallic acid derivatives, glycine, serine, arginine, and other amino acids; antiphlogistic such as pyrrolidone carboxylic acid and its salt, crude drug, vitamin, dipotassium glycyrrhizinate, glycyrrhizic acid, etc.; dandruff inhibitors such as pyridone ethanolamine salt and zinc pyrithione; bactericides such as isopropyl methylphenol and triclosan; solvents such as tar pigments, ultraviolet absorbers, antioxidants, and ethanol; anionic polymers such as acrylic polymers; nonionic polymers such as vinylpyrrolidone-type polymers; amphoteric polymers such as diallyldimethylammonium chloride/acrylic acid; cationic polymers such as cationized fibers and cationized guar gum; inorganic powders such as anhydrous silica and magnesium silicon (magnesium silicate); and organic powders such as nylon and polyethylene. These additional components may be used singly or in combination of two or more.

The perfume and perfume composition used in the shampoo composition of the present invention include perfume components described in paragraphs [0021] to [0035] of Japanese patent laid-open No. 2003-300811, and perfume solvents described in paragraph [0050 ]. Note that the "perfume composition" in the present invention means a mixture of the above-mentioned perfume components, solvent, perfume stabilizer, and the like.

The content of the perfume solvent is preferably 0.1 to 99% by mass, more preferably 1 to 50% by mass, based on the total amount of the perfume composition.

Examples of the above-mentioned perfume stabilizer include dibutylhydroxytoluene, dibutylhydroxyanisole, vitamin E and its derivatives, catechin compounds, flavonoids, and polyphenols. Of these, dibutylhydroxytoluene is particularly preferred.

The content of the fragrance stabilizer is preferably 0.0001 to 10% by mass, more preferably 0.001 to 5% by mass, based on the total amount of the fragrance composition.

The content of the perfume composition is preferably 0.005 to 40% by mass, more preferably 0.01 to 10% by mass, based on the total amount of the shampoo composition.

< preparation method >

The water-soluble component containing the component (C) is mixed and dissolved in a water bath at 80 ℃ to prepare an aqueous phase, and an oil phase containing the component (A), the component (B), the component (D) and, if necessary, the component (E) is added to the aqueous phase and mixed uniformly. Then, the shampoo composition of the present invention can be prepared by cooling to room temperature with stirring. The stirring device is not particularly limited, and may be appropriately selected according to the purpose, and examples thereof include a stirrer, a stirring blade, and the like.

-pH-

The pH of the shampoo composition is not particularly limited and may be appropriately selected according to the purpose, but is preferably 5.0 to 6.0 at 25 ℃.

The pH can be measured at 25 ℃ by a pH meter (HM-30G, manufactured by DKK K.K.K.) of the shampoo composition diluted 10 times with purified water.

The pH of the shampoo composition described above can be adjusted, for example, with a desired pH adjuster. The pH adjuster is not particularly limited and may be appropriately selected according to the purpose, but is preferably citric acid, succinic acid, 2-amino-2-methyl-1-propanol, monoethanolamine, or the like.

< use >

The shampoo composition of the present invention can suppress drying and tangling of hair after drying of hair, can smooth hair, and has excellent foamability, no harsh feeling of hair during rinsing, and good separation stability, for hair damaged by hair dyeing, permanent waving, repeated excessive drying with a hair dryer, etc., and thus can be suitably used, for example, as shampoo for cleaning scalp, shampoo for caring damaged hair, mild shampoo, and shampoo containing hair conditioner.

Examples

The present invention will be specifically described below with reference to examples and comparative examples, but the present invention is not limited to these examples and comparative examples. It should be noted that the blending amounts in the following examples and comparative examples are expressed as blending amounts converted to pure components. And "%" means "% by mass" unless otherwise specified "

(examples 1 to 48, comparative examples 1 to 7)

Shampoo compositions of examples and comparative examples having the compositions (expressed in mass% in the shampoo compositions) shown in tables 1-1 to 1-6 and tables 2-1 to 2-3 were prepared by the following preparation methods, and the obtained shampoo compositions were subjected to sensory evaluation and long-term storage stability evaluation by the following methods.

< preparation method >

In a water bath at 80 ℃, a water-soluble component containing component (C) is mixed and dissolved (hereinafter sometimes referred to as "aqueous phase"), an oil-soluble component containing component (a), component (B), and component (D) (tables 1-1 to 1-6), and component (E) (tables 2-1 to 2-3) is mixed and dissolved (hereinafter sometimes referred to as "oil phase"), and the resulting mixture is added to the above aqueous phase and mixed uniformly. Then cooling to room temperature while stirring, adding perfume, and mixing well. The cooled shampoo composition was adjusted to pH5.5(pH meter: HM-30G, measurement temperature: 25 ℃ C., manufactured by Toyo DKK Co., Ltd.) using citric acid as a pH adjuster.

In addition, comparative examples 5 to 7 use the comparative components of the components (D) shown in tables 1 to 6 in place of the component (D). In the component (E), silicone oil 1 represents silicone emulsion A (containing 9% of kinematic viscosity of 1,000 ten thousand mm)²Dimethicone (S), manufactured by Okayaku oil and fat industries Co., Ltd.), and silicone oil 2 (amino silicone gel (aminopropyl methyl siloxane-dimethyl siloxane copolymer) containing 12% of silicone oil, manufactured by shin-Etsu chemical Co., Ltd.).

< sensory evaluation >

20 women of 30-49 years old who feel uncomfortable and easily disheveled after shampooing within 3 months of chemical treatment such as hair dyeing and permanent waving, were used as subjects, and the generation rate and the generation amount of foam were evaluated on the basis of the following evaluation criteria using shampoo compositions having the compositions shown in tables 1-1 to 1-6 and tables 2-1 to 2-3 for 7 days, respectively, to suppress disheveling of hair after drying with a hair dryer and smooth hair.

Evaluation criteria-

Very good: 18 to 20 people with good answers

Excellent to o: the number of people who responded well is 14-17

O: 10 to 13 persons with good answers

And (delta): the number of people who answer well is 5-9

X: 0 to 4 persons with good answers

It should be noted that "good" in the above evaluation criteria means that the hair is smooth and not easily disheveled.

< evaluation of Long-term storage stability >

The shampoo compositions shown in tables 1-1 to 1-6 and tables 2-1 to 2-3 were filled in 50mL glass vials, each filled with about 40mL, and stored at 50 ℃ for 1 month, and evaluated according to appearance, using the following evaluation criteria.

Evaluation criteria-

Very good: no change in appearance, no separation was observed

O: some color shading was observed to be uneven, and no separation was observed

And (delta): slight separation was observed

X: separation was observed

[ tables 1-1]

[ tables 1-2]

[ tables 1 to 3]

[ tables 1 to 4]

[ tables 1 to 5]

[ tables 1 to 6]

[ Table 2-1]

[ tables 2-2]

[ tables 2 to 3]

The shampoo composition of the present invention can suppress drying and tangling of hair after drying of hair, can smooth hair, and has excellent foamability, no harsh feeling of hair during rinsing, and good separation stability, for hair damaged by hair dyeing, permanent waving, repeated excessive drying with a hair dryer, etc., and thus can be suitably used for, for example, a shampoo for cleaning scalp, a shampoo for caring for damage, a mild shampoo, a shampoo for adding hair conditioner, etc.

Claims (9)

1. A shampoo composition characterized by comprising:

(A) a cationic surfactant,

(B) A long-chain fatty alcohol having 12 to 24 carbon atoms,

(C) An amphoteric surfactant, and

(D) at least one nonionic surfactant having an HLB of 3-17 selected from polyoxyethylene cetostearyl hydroxymyristyl ether (60EO), polyethylene glycol dilaurate (6EO), polyethylene glycol dilaurate (8EO), polyethylene glycol dilaurate (12EO), polyethylene glycol dilaurate (20EO), polyethylene glycol distearate (3EO), polyethylene glycol distearate (12EO), polyethylene glycol diisostearate (12EO) and polyethylene glycol dioleate (12EO),

the mixing ratio of the component (A), the component (B) and the component (D) is represented by [ (A) + (B) ]/(D) = 8-43 in terms of mass ratio,

the mixing ratio of the component (A) and the component (B) is represented by (B)/(A) =1 to 7 in terms of a mass ratio.

2. The shampoo composition according to claim 1, wherein the mixing ratio of the component (D), the component (A), the component (B) and the component (D) is represented by [ (A) + (B) ]/(D) =8 to 43 in terms of a mass ratio, in a range of 0.05 to 2 mass%.

3. The shampoo composition according to claim 1 or 2, wherein the mixing ratio of the component (a) and the component (B) is (B)/(a) =1.5 to 6 in terms of a mass ratio.

4. The shampoo composition according to claim 1 or 2, wherein the component (a) is at least one selected from the group consisting of alkyl quaternary ammonium salts, quaternary ammonium salts having at least one ester group in the molecule, amidoamine-type surfactants, amine-type surfactants, and amino acid-type cationic surfactants, and the component (C) is at least one selected from the group consisting of alkyl betaine-type actives, amidobetaine-type actives, sulfobetaine-type actives, hydroxysulfobetaine-type actives, amidosulfobetaine-type actives, phosphobetaine-type actives, imidazolinebetaine-type actives, aminopropionic acid-type actives, and amino acid-type actives.

5. The shampoo composition according to claim 1 or 2, wherein the content of the component (A) is 0.5 to 5% by mass, the content of the component (B) is 1 to 10% by mass, and the content of the component (C) is 5 to 20% by mass.

6. The shampoo composition according to claim 1 or 2, further comprising (E) at least any one of a silicone oil and an ester oil which is liquid at ordinary temperature.

7. The shampoo composition according to claim 6, wherein the content of the (E) component is 0.1 to 3% by mass.

8. Shampoo composition according to claim 6 characterised in that the silicone oil has a kinematic viscosity of 500 mm at 25 ℃²More than s.

9. Shampoo composition according to claim 7 characterised in that the silicone oil has a kinematic viscosity of 500 mm at 25 ℃²More than s.