JP5159457B2 - Hair cosmetics - Google Patents

Description

  The present invention relates to a hair cosmetic, a cosmetic dispersion, and a method for producing them.

The hair is damaged by the environment (ultraviolet rays and heat from sunlight, drying), daily hair care behavior (hair washing and brushing, the heat of a dryer), and chemical treatment (coloring, permanent, etc.). For this reason, various hair rinses, hair conditioners, and the like have been developed in order to increase the friction and return the crisp hair surface to a smooth feel.
Patent Document 1 includes at least one selected from component (A) an ether type cationic surfactant and component (B) 2-naphthalenesulfonic acid, oxybenzonesulfonic acid, salicylic acid, guaiazulenesulfonic acid, and salts thereof. Disclosed is a hair cosmetic composition to be contained, which is excellent in slipperiness of hair, has a moist and firm feeling, and has good hair cohesiveness.
Patent Document 2 discloses (A) one or more kinds selected from 2-naphthalenesulfonic acid, oxybenzonesulfonic acid, salicylic acid, guaiazulenesulfonic acid and salts thereof, and (B) a hair cosmetic containing a cationic surfactant. Disclosed is a hair cosmetic that has no oily stickiness, is moist and smooth, and has excellent hairstyle cohesiveness.
JP 2006-45183 A JP-A-11-228358

However, since conventional hair cosmetics produce an emulsified composition by heating a cationic surfactant and 2-naphthalenesulfonic acid together and then adding a higher alcohol, the hair slips and softens. In that respect, it was not satisfactory.
This invention makes it a subject to provide the cosmetics for hair which have a slip, softness | softness, and a smooth feeling at the time of finishing, the cosmetic dispersion used for it, and their manufacturing method.

  In view of such circumstances, the present inventor has conducted earnest research, and as a result, hair cosmetics using a dispersion obtained by heating, dissolving, and cooling a mixture of a specific ratio of a cationic surfactant and an aromatic sulfonic acid. However, the present invention was completed by finding that it was extremely excellent in terms of slip, softness and smooth feeling when finished.

That is, the present invention provides the following (1) to (4).
(1) A method for producing a hair cosmetic comprising the following steps 1 and 2.
Step 1: The following components (A), (B) and (C):
(A) Cationic surfactant (B) Aromatic sulfonic acid or salt thereof (C) Water is used in a molar ratio of component (A) to component (B) ((A) / (B)) of 0. The step of mixing to 8 to 1.2, heating and dissolving, and then cooling to obtain a dispersion.
Step 2: A step of obtaining a cosmetic for hair by mixing an emulsified composition containing a cationic surfactant and a higher alcohol and the dispersion obtained in Step 1 at 50 ° C. or lower.

(2) A cosmetic for hair obtained by the production method of (1).

(3) The following components (A), (B) and (C):
(A) Cationic surfactant (B) Aromatic sulfonic acid or salt thereof (C) Water is used in a molar ratio of component (A) to component (B) ((A) / (B)) of 0. The manufacturing method of the dispersion liquid for cosmetics which mixes so that it may become 8-1.2, is heated and dissolved, and is cooled.

(4) A cosmetic dispersion obtained by the production method of (3).

  ADVANTAGE OF THE INVENTION According to this invention, the cosmetics for hair which have a slip, softness, and a smooth feeling at the time of finishing, the cosmetic dispersion used for it, and those manufacturing methods are obtained.

Hereinafter, the present invention will be described in detail.
(A) Cationic Surfactant The component (A) cationic surfactant used in the present invention is preferably a quaternary ammonium salt type cationic surfactant or a tertiary amine type cationic surfactant. As the quaternary ammonium salt type cationic surfactant, those represented by the general formula (1) are preferable, and as the tertiary amine type cationic surfactant, those represented by the general formula (2) are preferable.

[In the formula, one or two of R ¹ , R ² , R ^3, and R ⁴ are -O-, -CONH-, -NHCO-, -OCO- or- A hydrocarbon group or an aliphatic acyloxy (polyethoxy) ethyl group, which may be separated by a functional group represented by COO- or substituted with -OH, and the rest independently represents an alkyl group having 1 to 4 carbon atoms or A hydroxyalkyl group or a polyoxyethylene group is represented, and X ⁻ represents a halogen ion or an organic anion. ]

[Wherein, one of R ⁵ , R ⁵ and R ⁷ is represented by —O—, —CONH—, —NHCO—, —OCO— or —COO— having a total carbon number of 8 to 35. The hydrocarbon group which may be divided | segmented by the functional group or substituted by -OH is shown, and the remainder shows a C1-C4 alkyl group independently. ]

In general formula (1), among R ¹ , R ² , R ³ and R ⁴ , one or two of the hydrocarbon groups are linear or branched saturated or unsaturated having 8 to 35 carbon atoms in total. And a hydrocarbon group having a total carbon number of 12 to 28, more preferably a total carbon number of 12 to 25. The hydrocarbon group is represented by -O- (oxy group), -CONH- (amide group), -NHCO- (carbamoyl group), -OCO- (oxycarbonyl group) or -COO- (acyloxy group). It may be divided by a functional group and may have —OH (hydroxyl group) as a substituent.
In the general formula (1), the remaining two or three of R ¹ , R ² , R ³ and R ⁴ are an alkyl group having 1 to 4 carbon atoms, a hydroxyalkyl group or a polyoxyethylene group. Examples thereof include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, a t-butyl group, a hydroxyethyl group, and a hydroxypropyl group. Among them, a methyl group and an ethyl group are preferable, and a methyl group is more preferable. As the polyoxyethylene group, those having a total number of added moles of 10 or less are preferable.
Specific examples of the halogen ion or organic anion of X ⁻ include halogen ions such as Cl ⁻ and Br ⁻ , alkyl sulfate ions having 1 to 5 carbon atoms (CH ₃ SO ₄ ⁻ , C ₂ H ₅ SO ₄ ⁻ , C ₃ H ₇ SO ₄ ^-, etc.), alkyl carbonate ion (CH ₃ CO ₃ ^-) and the like can be ^{exemplified, Cl -, Br -, CH} 3 SO 4 -, C 2 H 5 SO 4 -, CH 3 CO 3 - Is preferred.

  Examples of the quaternary ammonium salt type cationic surfactant represented by the general formula (1) include mono long chain alkyl (carbon number 12 to 28) quaternary ammonium salt, di long chain alkyl (carbon number 12 to 28) quaternary. Ammonium salt, branched chain alkyl (carbon number 12-28) quaternary ammonium salt, alkylamide (carbon number 12-28) alkyl (carbon number 1-5) quaternary ammonium salt, N-hydrocarbon (carbon number 12-28) ) Carbamoylalkyl (carbon number 1-5) quaternary ammonium salt, acyl (carbon number 12-28) oxyalkyl (carbon number 1-5) quaternary ammonium salt, alkyl or alkenyl (carbon number 12-28) oxyalkyl ( C1-C5) A quaternary ammonium salt is mentioned.

  Mono long chain alkyl (C12-28) quaternary ammonium salts include stearyl trimethylammonium chloride, myristyltrimethylammonium chloride, cetyltrimethylammonium chloride, aralkyltrimethylammonium chloride, behenyltrimethylammonium chloride, lauryltrimethylammonium chloride, N -Stearyl-N, N, N-tri (polyoxyethylene) ammonium chloride (total 3 mol addition).

  Examples of the di long-chain alkyl or alkenyl (C12-28) quaternary ammonium salt include distearyldimethylammonium chloride, dioleyldimethylammonium chloride, dipalmitylmethylhydroxyethylammonium methosulfate, diisostearyldimethylammonium methosulfate, Examples include di [(2-dodecanoylamino) ethyl] dimethylammonium chloride, di [(2-stearoylamino) propyl] dimethylammonium etosulphate, and the like.

  Examples of branched chain alkyl (C12-C28) quaternary ammonium salts include 2-decyltetradecyltrimethylammonium chloride, 2-dodecylhexadecyltrimethylammonium chloride, di-2-hexyldecyldimethylammonium chloride, di-2-octyl. And dodecyldimethylammonium chloride.

  Examples of the alkylamide (carbon number 12 to 28) alkyl (carbon number 1 to 5) quaternary ammonium salt include stearamide propyl quaternary ammonium salt. Examples of N-hydrocarbon (C12-28) carbamoylalkyl (C1-5) quaternary ammonium salts include N-stearylcarbamoylpropyl quaternary ammonium salts. Examples of acyl (C12-28) oxyalkyl (C1-5) quaternary ammonium salts include stearoylpropyl quaternary ammonium salts. Examples of the hydrocarbon (C12-28) oxyalkyl (C1-5) quaternary ammonium salt include octadecyloxypropyltrimethylammonium chloride.

In the general formula (2), one of R ^{5 to} R ⁷ is a linear or branched saturated or unsaturated hydrocarbon group having a total carbon number of 8 to 35, preferably a total carbon number of 12 to 28, more preferably a total of 12 to 25 carbon atoms, and the hydrocarbon group is divided by a functional group represented by -O-, -CONH-, -NHCO-, -OCO- or -COO- or -OH The hydrocarbon group which may be substituted by is shown, and the rest independently represents an alkyl group having 1 to 4 carbon atoms.
Examples of the alkyl group having 1 to 4 carbon atoms include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, and a t-butyl group. Among them, a methyl group and an ethyl group are preferable, and a methyl group is more preferable. preferable.
Preferable specific examples of the tertiary amine type compound include N, N-dimethyloctadecyloxypropylamine, stearamidepropyldimethylamine and the like.

  As the tertiary amine type cationic surfactant, the tertiary amine type compound represented by the general formula (2) may be used as it is, or an acid addition salt thereof may be used. As the acid, an inorganic acid or an organic acid is used.

(B) Aromatic sulfonic acid or salt thereof Specific examples of the aromatic sulfonic acid of component (B) include benzenesulfonic acid, oxybenzenesulfonic acid, xylenesulfonic acid, p-toluenesulfonic acid, and naphthalenesulfonic acid. One or more selected from the group is preferred, and naphthalene sulfonic acid is more preferred from the viewpoint of feel at the finish.
As naphthalene sulfonic acid, 1- or 2-naphthalene sulfonic acid, 2,7-naphthalene disulfonic acid, 1,5-naphthalene disulfonic acid, 2,6-naphthalene disulfonic acid, 1-naphthol-4-sulfonic acid, 2- Naphthol-6-sulfonic acid, 2-naphthol-7-sulfonic acid, 1-naphthol-3,6-disulfonic acid, 2-naphthol-3,6-disulfonic acid, 2-naphthol-6,8-disulfonic acid, or Examples thereof include 2-naphthalenesulfonic acid, 1,5-naphthalenedisulfonic acid, 2,6-naphthalenedisulfonic acid, 1-naphthalenesulfonic acid, 2,7-naphthalenedisulfonic acid, and salts thereof. Is particularly preferred. Moreover, as these salts, alkali metal salts, such as a sodium salt, potassium salt, lithium salt, ammonium salt, a triethanolammonium salt, etc. are mentioned.
In the case of using naphthalenesulfonic acid or a salt thereof, as the component (A), a quaternary ammonium salt type cationic surfactant or a tertiary amine salt having a hydrocarbon group having 16 to 22 carbon atoms is used as a component (A) from the viewpoint of feel at the finish. Type cationic surfactant is preferable, and when using benzenesulfonic acid, oxybenzenesulfonic acid, xylenesulfonic acid, p-toluenesulfonic acid or a salt thereof, a hydrocarbon having 18 to 22 carbon atoms from the viewpoint of touch at the finish. A quaternary ammonium salt or tertiary amine salt type cationic surfactant having a group is preferred.

Method for Producing Hair Cosmetics The method for producing hair cosmetics of the present invention comprises the following steps 1 and 2.
Step 1: The following components (A), (B) and (C):
(A) Cationic surfactant (B) Aromatic sulfonic acid or salt thereof (C) Water is used in a molar ratio of component (A) to component (B) ((A) / (B)) of 0. The step of mixing to 8 to 1.2, heating and dissolving, and then cooling to obtain a dispersion.
Step 2: A step of obtaining a cosmetic for hair by mixing an emulsified composition containing a cationic surfactant and a higher alcohol and the dispersion obtained in Step 1 at 50 ° C. or lower.

Step 1:
The molar ratio (cationic surfactant / aromatic sulfonic acid or salt thereof) in which (A) the cationic surfactant and (B) aromatic sulfonic acid or salt thereof are mixed is the cationic surfactant and aromatic. From the viewpoint of controlling the crystal diameter of the sulfonic acid salt to obtain a dispersion having a small particle diameter, it is 0.8 to 1.2, preferably 0.85 to 1.05, and preferably 0.9 to 1.1. Is more preferable. If the amount of the cationic surfactant is too large, the crystal dissolves, and if the amount of the aromatic sulfonic acid or its salt is large, the crystal particle size becomes nonuniform.

Further, in the mixture, the cationic surfactant is preferably 3 to 25% by weight, more preferably 4 to 23% by weight, and still more preferably 5 to 21% by weight. The aromatic sulfonic acid or salt thereof is naturally determined by the amount of the cationic surfactant because the molar ratio with the cationic surfactant is defined as described above, but preferably 2 to 20% by weight, 3 to 18% by weight is more preferable, and water is preferably 50 to 95% by weight, more preferably 55 to 90% by weight.
As long as the present invention is not impaired, a water-soluble organic solvent or the like may be contained.
If an oily component such as a higher alcohol is present, it will be emulsified by a cationic surfactant, resulting in insufficient dispersion of component (B), and the feeling of smoothness will be reduced. preferable. Essentially, it is a range that does not impair the effects of the present invention, preferably 0.5% by weight or less, and more preferably 0.1% by weight or less. The pH (20 ° C.) is preferably 2 to 7 and more preferably 3 to 6 from the viewpoint of making a dispersion.

In the heating / dissolution, the mixture may be heated and dissolved, or the components heated may be mixed and dissolved.
The temperature for heating the mixture is preferably 55 ° C. or higher, more preferably 55 to 95 ° C., and more preferably 60 to 90 ° C. from the viewpoint of dissolving the mixture. The dissolved mixture can be seen by being visually transparent.
When heating and cooling, it is preferable to carry out stirring, and particularly during cooling, stirring is preferably performed in order to control crystals.
The stirring speed at the time of heating and cooling is preferably 50 to 3000 r / min, more preferably 100 to 2000 r / min, from the viewpoint of controlling the crystal diameter and reducing the particle size.
As a means for stirring, a commonly used mixing and stirring device such as an anchor blade can be used. Among the mixing and stirring devices, high-speed stirring and mixing devices such as Ultra Disper [Asada Tekko Co., Ltd., product name], Ebara Milder [Ebara Manufacturing Co., Ltd., product name], TK Homomixer [Primix Co., Ltd., product name] are used. May be.
The cooling rate depends on the stirring speed and the size of the stirring tank, but from the viewpoint of controlling the crystal diameter and reducing the particle size, 0.5 to 10 ° C / min is preferable, and 1 to 5 ° C / min is preferable. preferable.
The obtained dispersion is a crystal dispersion composed of the component (A) and the component (B), and the average particle size of the crystal is determined by an optical microscope from the viewpoint of slipping, softness, and smooth feeling when finished. The number average of 50 is preferably 20 μm or less, preferably 1 to 20 μm, and more preferably 3 to 15 μm. The average particle diameter is an average of values obtained by measuring the maximum major axis of the crystal.

The dispersion obtained in step 1 is in a state where the crystals with the small particle diameter are dispersed in the liquid. Here, the amount of the crystals in the dispersion is preferably 4 to 45% by weight, more preferably 6 from the viewpoint of adjusting the average particle diameter of the crystals within the above range and the viewpoint of manufacturing the hair cosmetic. -40% by weight, more preferably 8-35% by weight. That is, if the amount of crystals in the dispersion is too small, it must be blended in a large amount into the hair cosmetic, and if too large, the viscosity of the dispersion becomes too high.
Step 2:
In step 2, an emulsified composition containing a cationic surfactant and a higher alcohol used in a normal rinse treatment agent is first produced by a conventional method.
As the higher alcohol, a higher alcohol having a linear or branched alkyl group or alkenyl group, preferably a higher alcohol having a linear or branched alkyl group or alkenyl group having 12 to 26 carbon atoms, more preferably cetanol. , Higher alcohols such as cetyl alcohol, stearyl alcohol, aralkyl alcohol, behenyl alcohol, caranavir alcohol, ceryl alcohol, oleyl alcohol, isostearyl alcohol, especially cetanol, cetyl alcohol, stearyl alcohol, behenyl One or a mixture of two or more alcohols is preferred. Here, cetanol refers to a substance containing cetyl alcohol as a main component and containing a higher alcohol such as stearyl alcohol or oleyl alcohol. Cationic surfactants as described above can be used.
The weight ratio of the cationic surfactant to the higher alcohol (cationic surfactant / higher alcohol) is preferably 1/5 to 5/1, and more preferably 1/3 to 3/1.
The emulsion composition can be produced by a conventional method. For example, an aqueous medium containing a cationic surfactant is heated to 60 to 90 ° C, and a higher alcohol is heated to 60 to 90 ° C, preferably 60 to 90 ° C. The dissolved material is added and emulsified, and then cooled. An aqueous medium may be added to the higher alcohol.

The obtained emulsified composition and the dispersion are mixed at 50 ° C. or lower, preferably 40 ° C. or lower. If the mixing temperature exceeds 50 ° C., the crystals dissolve, which is not preferable.
As the stirring means, those described above can be used. You may mix | blend a thickening polymer and another oil-based component as needed. The mixing ratio of the emulsified composition and the dispersion liquid is converted into an effective amount from the viewpoint of slip, softness, and smooth feeling when finished [effective amount of the emulsified composition (total amount of cationic surfactant and higher alcohol) / Effective portion of dispersion (total amount of cationic surfactant and aromatic sulfonic acid or salt thereof)] is preferably 1/5 to 20/1, more preferably 1/1 to 15/1. / 1 to 10/1 is even more preferable.

Hair cosmetic The hair cosmetic of the present invention can be obtained by the production method described above.
In the hair cosmetic composition of the present invention, the content of the dispersion obtained in the above step 1 is an effective component ((A) a cationic surfactant and (B) from the viewpoint of slipping, softness, and smooth feeling when finished. 0.5 to 10% by weight, preferably 1 to 8% by weight, in terms of the total amount of solids with aromatic sulfonic acid or a salt thereof, and more preferably 1 to 8% by weight. It is preferable to contain 0.3 to 10% by weight, further 0.5 to 9% by weight, and further 1 to 8% by weight of crystals derived from the dispersion liquid in Step 1.
In the cosmetic for hair of the present invention, the content of the emulsified composition containing the cationic surfactant and the higher alcohol is determined in terms of solid content (cationic) from the viewpoint of familiarity with hair, softness, slipperiness, and the like. 0.5 to 15% by weight, preferably 1 to 10% by weight, and more preferably 1 to 5% by weight.
In the hair cosmetic composition of the present invention, the content of the cationic surfactant is preferably 0.3 to 5% by weight, more preferably 0.5 to 4% by weight, except for the cosmetic dispersion liquid. Furthermore, 1 to 3 weight% is preferable.

  The hair cosmetic composition of the present invention preferably further comprises the following oily components.

  Examples of the oil component include silicones, ester oils, hydrocarbons, glycerides, vegetable oils, animal oils, lanolin derivatives, higher fatty acid esters, and the like. From the viewpoint of obtaining an excellent feel when finished, ester oils and / or silicones Is preferred.

The ester oil is preferably a monoester oil or one or a mixture of two or more ester oils having two or more ester bonds in the molecule.
The monoester oil is a monoester oil having 8 to 40 carbon atoms in total, preferably 2 to 22 carbon atoms, more preferably a monovalent fatty acid having 8 to 20 carbon atoms and a monovalent or polyhydric alcohol having 1 to 20 carbon atoms. These may be linear or branched, and may be saturated or unsaturated. Particularly preferred are isopropyl palmitate, isopropyl myristate, isononyl isononanoate, triisodecyl isononanoate, stearyl stearate, and diglyceryl monoisostearate.
The polyvalent ester oil having two or more ester bonds in the molecule is a polyvalent ester oil having a total carbon number of 8 to 120, preferably one or two monovalent or polyvalent fatty acids having 2 to 22 carbon atoms. Examples thereof include polyvalent esters of the above mixture and one or two or more of monohydric or polyhydric alcohols having 2 to 20 carbon atoms, which may be linear or branched, and may be saturated or unsaturated. Further, an aromatic ring may be included. Particularly preferred are neopentyl glycol dicaprate, diglyceryl diisostearate, dipentaerythritol and mixed fatty acids such as hydroxystearic acid, stearic acid and rosin.

Examples of silicone include (a) dimethylpolysiloxane, (b) methylphenylpolysiloxane, and (c) amino-modified silicone described in JP-A-6-48916. As an aqueous emulsion, SM8704C (Toray Dow Corning), DC939 (made by Toray Dow Corning), etc.], (d) fatty acid-modified polysiloxane, (e) alcohol-modified silicone, (f) aliphatic alcohol-modified polysiloxane, (g) polyether-modified silicone (H) epoxy-modified silicone, (i) fluorine-modified silicone, (j) cyclic silicone, (k) alkyl-modified silicone, (l) amino-modified siloxane-polyoxyalkylene block copolymer, and the like.

  Two or more oily components can be used in combination, and the content thereof is preferably 1 to 10% by weight in the hair cosmetic composition of the present invention from the viewpoint of imparting softness and familiarity to the hair. More preferably, it is 5 to 8% by weight, and further preferably 2 to 5% by weight.

  The hair cosmetic composition of the present invention may further contain a cationic surfactant, an anionic surfactant, a nonionic surfactant, an amphoteric surfactant, and the like.

  The hair cosmetic composition of the present invention may further contain a thickening polymer. Examples of the thickening polymer include hydroxyethyl cellulose, guar gum, xanthan gum, and polyacrylic acid polymer. The content of the thickening polymer is preferably 0.01 to 5% by weight, and particularly preferably 0.05 to 3% by weight in the hair cosmetic.

  The hair cosmetic composition of the present invention further contains water-soluble collagen, protein hydrolysates typified by collagen derivatives, ceramides, extracts from animals and plants, etc., which are known ingredients blended in hair cosmetics. You can also Further, chelating agents, coloring agents, preservatives, pH adjusting agents, viscosity adjusting agents, fragrances, pearlescent agents, wetting agents and the like may be blended.

The hair cosmetic composition of the present invention can be used as a hair conditioning composition such as a hair conditioner, hair rinse, hair treatment, hair cream, blow lotion, hair pack, conditioning gel, conditioning foam, and the like.
The hair cosmetic composition of the present invention is preferably rinsed with water as necessary after being washed with a hair cleansing agent, applied to the hair, and applied to the hair.
The hair cosmetic composition of the present invention can be implemented in various forms such as liquid, emulsion, cream, gel, and mousse.
The hair cosmetic composition of the present invention preferably has a pH (20 ° C.) of 2 to 8, more preferably 3 to 7.
The water content of the hair cosmetic composition of the present invention varies depending on the form used, but is preferably 60 to 95% by weight, more preferably 70 to 90% by weight.
Method for producing cosmetic dispersion The method for producing the cosmetic dispersion of the present invention comprises components (A), (B) and (C):
(A) Cationic surfactant (B) Aromatic sulfonic acid or salt thereof (C) Water is used in a molar ratio of component (A) to component (B) ((A) / (B)) of 0. It is a manufacturing method which mixes so that it may become 8-1.2, is heated and melt | dissolved, and is then cooled.
This is the same as step 1 of the method for producing the hair cosmetic, and the preferred range is also the same.
Cosmetic Dispersion The cosmetic dispersion of the present invention can be obtained by the above-described production method, and can be suitably used for cosmetics, particularly hair cosmetics.
From the viewpoint of slipping, softness, and smooth feeling in cosmetics, the effective content of the dispersion for cosmetics (the solid content of (A) cationic surfactant and (B) aromatic sulfonic acid or salt thereof The content of (total amount) is preferably 0.2 to 10% by weight, more preferably 0.3 to 5% by weight, and from the same viewpoint, 0.1 to 10% by weight of the crystals derived from the dispersion liquid in Step 1 above. Further, it is preferable to contain 0.2 to 9% by weight, and further 0.3 to 8% by weight. The cosmetic may contain the oil component and the thickening polymer, if necessary.

  EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. The numerical values in Table 1 indicate the weight percentages of moles or effective components, and Table 2 shows the weight percentages as they are.

Examples 1-6
A cosmetic dispersion having the composition shown in Table 1 was prepared by the following method.
Examples 1 to 5: After mixing the components (A), (B) and (C) in Table 1, the mixture was stirred at 120 ° C. using a magnetic stirrer (120 r / min) and dissolved uniformly. Thereafter, the mixture was cooled to 25 ° C. while continuing stirring (cooling rate 2 ° C./min) to precipitate crystals (crystal average particle size: 12 to 15 μm).
Example 6: After mixing the components (A), (B) and (C) in Table 1, the mixture is stirred at 60 ° C. using a magnetic stirrer and dissolved uniformly. Thereafter, the mixture was cooled to 25 ° C. (cooling rate: 2 ° C./min) while applying a homomixer (rotation speed: 500 r / min) to precipitate crystals (crystal average particle size: 3 μm).
Comparative Examples 1 and 2: The same procedure as in Examples 1 to 4 was performed except that the composition shown in Table 1 was used.
Comparative Example 3 Stirring was carried out at 25 ° C. without raising the temperature, but it did not dissolve, resulting in a non-uniform crystal dispersion (crystal average particle size: 110 μm).
The properties were judged visually.

In addition, the amount of crystals in the dispersion is filtered by centrifuging the dispersion, separating the precipitate obtained by removing the supernatant, and filtering (using No. 5C filter paper manufactured by Advantech). Calculated by remaining amount.
Centrifuge conditions: Using a centrifuge (manufactured by Hitachi Koki Co., Ltd., model number: CP56G, rotor model number: P50AT2, r is 0.108 m), Table 1 shows the results.

Examples 7-12, Comparative Examples 4-8
Hair cosmetics having the compositions shown in Table 2 were prepared by the following method. In both cases, the pH was adjusted to 6 (20 ° C.).
Examples 7 to 12: Components (E) and (H) are mixed (aqueous phase), kept at 80 ° C. and stirred. An oil phase in which component (F) was uniformly dissolved at 80 ° C. was charged into the aqueous phase and emulsified. It cools after emulsification and mixes a component (G) at 60 degreeC. At 30 ° C., the cosmetic dispersion liquid described in Table 1 (the numbers of the crystal dispersion liquid described in Table 2 correspond to the numbers of the examples in Table 1) were mixed, and the stirring was terminated to obtain a hair cosmetic.
Comparative Example 4 (ordinary method): After mixing components (D), (E), and (H) (aqueous phase), an oil phase in which component (F) is uniformly dissolved at 80 ° C. is used as the aqueous phase. It was added and emulsified. It cooled after emulsification, the component (G) was mix | blended at 60 degreeC, stirring was complete | finished at 30 degreeC, and hair cosmetics were obtained (crystal average particle diameter: 35 micrometers).
Comparative Examples 5 to 7: Performed in the same manner as in Examples 6 to 10 except that the compositions shown in Table 2 were used.
Comparative Example 8: Components (E) and (H) are mixed (aqueous phase), held at 80 ° C. and stirred. The oil phase in which the component (F) is uniformly dissolved at 80 ° C. is charged into the aqueous phase to emulsify, and subsequently the crystal dispersion 1 is added at 80 ° C., then cooled, and the component (G) at 60 ° C. Were mixed. After further cooling, stirring was terminated at 30 ° C. to obtain a hair cosmetic.

The components used in Tables 1 and 2 are as follows.
Cetyltrimethylammonium chloride: Cotamine 60W (effective 30% by weight) (manufactured by Kao Corporation)
Stearyltrimethylammonium chloride: Cotamine 86W (effective 30% by weight) (manufactured by Kao Corporation)
Behenyltrimethylammonium chloride: Cotamine 2285E (effective content 85% by weight) (manufactured by Kao Corporation)
Stearoxypropyltrimethylammonium chloride: Cotamine E-80K (effective content 45% by weight) (manufactured by Kao Corporation)
Polyoxypropylene octyl ether: Japanese Unexamined Patent Publication No. 2007-211232 Compound cetyl alcohol of Production Example 1: Calcoal 6098 (manufactured by Kao Corporation)
Stearyl alcohol: Calcoal 8098 (manufactured by Kao Corporation)
Dimethylpolysiloxane: BY11-040 (manufactured by Toray Dow Corning Co., Ltd.)

Evaluation methods and evaluation criteria are shown below.
Evaluator and hair bundle:
Each of the three panelists used a Japanese-derived hair bundle (25 cm, about 16 g) to evaluate the feel of the following items according to the criteria shown below. The score was obtained by averaging the evaluation results of the three panelists.

Evaluation criteria:
During application (familiarity)
5: Familiar 4; Slightly good 3; Normal 2; Not very good 1; Not good

During application (softness)
5; Softness is good 4; Slightly good 3; Normal 2; Not very good 1; Not good

Finish (slip)
5; Good sliding 4; Slightly good 3; Normal 2; Not very good 1; Not good

Finish (softness)
5; Softness is good 4; Slightly good 3; Normal 2; Not very good 1; Not good

Finish (Smooth feeling / No stickiness)
5; Smooth feeling 4; Somewhat 3; Neither 2; Not much 1; None

Finish (uniformity)
5; Hair feel is uniform 4; Slightly 3; Neither 2; Not much 1; None

operation:
The hair bundle is sufficiently moistened with warm water of 35 to 40 ° C. and then washed with a plain shampoo having the following composition. After sufficiently rinsing with warm water, lightly squeeze the hair bundle to remove excess moisture and apply 3 g of hair cosmetic. After evaluating each item at the time of application, rinse with warm water, remove moisture with a towel, and prepare a hair bundle with a comb. Then, it is dried with warm air from a dryer, the hair bundle is arranged with a comb for finishing, and each item at the time of finishing is evaluated.

Plain shampoo (% by weight)
Polyoxyethylene lauryl ether sulfate Na 12
Coconut oil fatty acid N-methylethanolamide 3
Citric acid 0.2
Methylparaben 0.3
Purified water balance 100

From Table 2, it can be seen that the hair cosmetic composition of the present invention has good elongation at the time of application, imparts flexibility to the entire hair, and does not have stickiness when finished, and can impart good slipperiness, softness and uniformity. . On the other hand, in Comparative Example 4 in which a cosmetic dispersion of naphthalenesulfonic acid was not used, and in Comparative Example 8 in which a cosmetic dispersion was added at 80 ° C., the familiarity during application, softness, and no stickiness at the finish, It turns out that it is inferior to favorable sliding property, softness, and a uniform feeling.
Moreover, in the comparative examples 5 and 6 using the dispersion liquid which remove | deviates from the molar ratio of this invention, it was inferior to said performance. Furthermore, in the comparative example 7 which could not be uniformly dispersed, the touch was not good.

Claims (7)

The manufacturing method of the cosmetics for hair which has the following process 1 and 2.
Step 1: The following components (A), (B) and (C):
(A) Cationic surfactant (B) One or more aromatic sulfonic acids or salts thereof selected from the group consisting of benzenesulfonic acid, oxybenzenesulfonic acid, xylenesulfonic acid, p-toluenesulfonic acid, and naphthalenesulfonic acid (C) After mixing, heating and dissolving water so that the molar ratio of component (A) to component (B) ((A) / (B)) is 0.8 to 1.2 , Cooling to obtain a dispersion.
Step 2: A step of obtaining a cosmetic for hair by mixing an emulsified composition containing a cationic surfactant and a higher alcohol and the dispersion obtained in Step 1 at 50 ° C. or lower.   The manufacturing method of Claim 1 whose (A) cationic surfactant is 3-25 weight% in process 1, and (B) aromatic sulfonic acid or its salt is 2-20 weight%.   The method according to claim 1 or 2, wherein the cooling in step 1 is performed with stirring.   The manufacturing method of any one of Claims 1-3 whose dispersion liquid obtained at the process 1 is a dispersion liquid of the crystal | crystallization which consists of a component (A) with an average particle diameter of 20 micrometers or less, and a component (B). (B) The aromatic sulfonic acid or its salt is naphthalenesulfonic acid or its salt, The manufacturing method of any one of Claims 1-4. 6. The production method according to claim 5, wherein (A) the cationic surfactant is a quaternary ammonium salt type cationic surfactant or a tertiary amine salt type cationic surfactant having a hydrocarbon group having 16 to 22 carbon atoms. . A cosmetic for hair obtained by the production method according to any one of claims 1 to 6 .