JP6357449B2 - Method for producing emulsified composition for hair - Google Patents

Description

  The present invention relates to a method for producing an emulsified composition for hair.

  Conventionally, hair emulsification compositions such as hair treatments and hair creams have been used for the purpose of improving the condition of hair such as gloss of hair, smoothness of hair, firmness of hair, and softness of hair. The emulsified composition for hair is produced by emulsifying a water phase containing a surfactant and water and an oil phase containing oil. As the surfactant, a quaternary ammonium salt cationic surfactant is mainly used, and the quaternary ammonium salt cationic surfactant has skin irritation and its Due to the low biodegradability, there are concerns about adverse environmental impact in the future, and its use may be limited. Therefore, an emulsified composition for hair using an amphoteric surfactant instead of the quaternary ammonium salt cationic surfactant has been proposed (see, for example, Patent Document 1).

  However, in the above-mentioned emulsified composition for hair produced by simply replacing the cationic surfactant with the amphoteric surfactant, the gloss of the hair, the smoothness of the hair, the stiffness of the hair, the softness of the hair, and the squeaky feeling of the hair are reduced. It does not have satisfactory performance for all effects and antistatic effects of hair, and further improvement and development are desired.

JP 2002-53435 A

  An object of the present invention is to solve the above-described problems and achieve the following objects. That is, the present invention is able to improve the condition of the hair by adhering well to the hair and imparting gloss, smoothness, stiffness, softness, etc. to the hair, being excellent in the antistatic effect of the hair, It aims at providing the manufacturing method of the emulsion composition for hair from which the emulsion composition for hair with favorable emulsion stability is obtained.

  As a result of intensive studies by the inventor in order to solve the above problems, (A) an oil phase containing an oil component and (B) an aqueous phase containing an amphoteric surfactant and water are pressurized with a high-pressure emulsifier. Hair emulsifying composition obtained by the method for producing an emulsifying composition for hair including a high-pressure emulsifying step for emulsifying at 0.5 MPa or more, adheres well to the hair, and is glossy, smooth, firm, soft, etc. It was found that the condition of the hair can be improved by imparting, the antistatic effect of the hair is excellent, and the emulsion stability is good.

Means for solving the problems are as follows. That is,
<1> including a high-pressure emulsification step of emulsifying (A) an oil phase containing an oil component and (B) an aqueous phase containing an amphoteric surfactant and water with a high-pressure emulsifier at a pressure of 0.5 MPa or more. Is a method for producing an emulsified composition for hair.
<2> The method for producing an emulsified composition for hair according to <1>, wherein the pressure is 1 MPa or more and 120 MPa or less.
<3> The emulsified composition for hair according to any one of <1> to <2>, wherein the amphoteric surfactant is one of an amino acid amphoteric surfactant and an imidazolinium betaine amphoteric surfactant. It is a manufacturing method.
<4> The amphoteric surfactant is N- [3-alkyl (12,14) oxy-2-hydroxypropyl] -L-arginine hydrochloride, N-lauroyl-L-arginine, and 2-coconut oil alkyl- The method for producing an emulsified composition for hair according to any one of <1> to <3>, wherein the composition is any one of N-carboxymethyl-N-hydroxyethylimidazolinium betaine.
<5> The method for producing an emulsified composition for hair according to any one of <1> to <4>, wherein the content of the amphoteric surfactant is 1% by mass or more and 10% by mass or less.
<6> The method for producing an emulsified composition for hair according to any one of <1> to <5>, wherein the oil content is 2.5% by mass or more and 40% by mass or less.
<7> The above <1>, wherein a mass ratio (oil content / amphoteric surfactant) of the oil content (mass%) and the amphoteric surfactant content (mass%) is 1 or more and 5 or less. To <6>. The method for producing an emulsified composition for hair according to any one of <6>.

  According to the present invention, it is possible to solve the above-mentioned problems in the prior art, achieve the above-mentioned object, adhere well to the hair, and give the hair a gloss, smoothness, stiffness, softness, etc. It is possible to provide a method for producing an emulsified composition for hair from which a hair emulsified composition excellent in antistatic effect of hair and having good emulsification stability can be obtained.

FIG. 1 is a schematic diagram illustrating an example of a high-pressure emulsification apparatus.

(Method for producing emulsified composition for hair)
The manufacturing method of the emulsified composition for hair of this invention includes a high-pressure emulsification process, and includes another process as needed. By the method for producing the emulsified composition for hair, an emulsified composition for hair is obtained.

<High pressure emulsification process>
The high-pressure emulsification step is a step in which (A) the oil phase and (B) the aqueous phase are subjected to a high-pressure emulsification treatment at a pressure of 0.5 MPa or more using a high-pressure emulsification apparatus. By the high-pressure emulsification step, the oil phase in the aqueous phase is atomized and the particles are homogenized. By the high-pressure emulsification step, the particle size of the oil phase in the water phase can be further reduced, and the standard deviation of the particle size distribution of the oil phase in the water phase can be reduced.

  There is no restriction | limiting in particular as said high pressure emulsification apparatus, According to the objective, it can select suitably, For example, a high pressure homogenizer etc. are mentioned. As the high-pressure homogenizer, a commercially available product can be used. Examples of the commercially available product include a pressure type homogenizer (manufactured by APV Gaulin), a microfluidizer (manufactured by POWREC, Inc.), and nanoveita (manufactured by Yoshida Kikai Co., Ltd.). ) And the like.

  In the high-pressure emulsification step, the pressure during emulsification is 0.5 MPa or more, preferably 1 MPa or more and 120 MPa or less, and more preferably 30 MPa or more and 120 MPa or less. When the pressure is less than 0.5 MPa, the homogenization of the oil phase becomes insufficient, and the gloss of the hair, the smoothness of the hair, and the squeaky feeling of the hair when using the obtained emulsion composition for hair are reduced. , Hair stiffness, hair softness, and hair antistatic effect may be insufficient.

  The number of times of the high-pressure emulsification step may be one time, but may be a plurality of times. There is no restriction | limiting in particular as said frequency | count, Although it can select suitably according to the objective, 1 time or more and 10 times or less are preferable, and 1 time or more and 5 times or less are more preferable.

-(A) Oil phase-
The oil phase of the component (A) contains an oil component, and further contains other components as necessary. The oil improves hair gloss, hair smoothness, hair firmness, hair softness, and antistatic effect of hair when using the obtained emulsified composition for hair, and makes the hair feel squeaky. Contained to reduce.

--- Oil content--
The oil component is not particularly limited as long as it is an oil component used in an ordinary emulsion composition for hair, and can be appropriately selected according to the purpose. For example, natural animal and vegetable oils, semi-synthetic oils and fats, hydrocarbon oils Higher fatty acids, higher alcohols, ester oils, silicone oils, fluorine oils and the like. These may be used individually by 1 type and may use 2 or more types together. Among these, silicone oil is preferable in terms of hair gloss, hair stiffness, and hair smoothness.

  Examples of the natural animal and vegetable oils and semi-synthetic oils include avocado oil, linseed oil, almond oil, ibotarou, eno oil, olive oil, cocoa butter, kapok wax, kaya oil, carnauba wax, liver oil, candelilla wax, and refined candelilla. Wax, beef tallow, beef leg fat, beef bone fat, hydrogenated beef tallow, kyounin oil, whale wax, hydrogenated oil, wheat germ oil, sesame oil, rice germ oil, rice bran oil, sugar cane wax, sasanqua oil, safflower oil, shea butter, Cinnagi oil, cinnamon oil, jojoballow, squalane, squalene, shellac wax, turtle oil, soybean oil, tea seed oil, camellia oil, evening primrose oil, corn oil, pork fat, rapeseed oil, Japanese kiri oil, nukarou, germ oil, horse Fat, Persic oil, Palm oil, Palm kernel oil, Castor oil, Hardened castor oil, Castor oil fatty acid methyl ester, Castor Lily, Grape Oil, Bayberry Wax, Jojoba Oil, Macadamia Nuts Oil, Beeswax, Mink Oil, Meadow Foam Oil, Cottonseed Oil, Cotton Wax, Owl, Owl Kernel Oil, Montan Wax, Palm Oil, Hardened Palm Oil, Tricoconut Oil Fatty Acid Glyceride, Sheep Fat Peanut oil, lanolin, liquid lanolin, reduced lanolin, lanolin alcohol, hard lanolin, lanolin acetate, lanolin acetate alcohol, lanolin fatty acid isopropyl, polyoxyethylene lanolin alcohol ether, polyoxyethylene lanolin alcohol acetate, lanolin fatty acid polyethylene glycol, polyoxy Examples include ethylene hydrogenated lanolin alcohol ether and egg yolk oil. These may be used individually by 1 type and may use 2 or more types together.

  Examples of the hydrocarbon oil include linear, branched, and volatile hydrocarbon oils. For example, ozokerite, α-olefin oligomer, light isoparaffin, isododecane, isohexadecane, light liquid isoparaffin, squalane, synthesis Squalane, vegetable squalane, squalene, ceresin, paraffin, paraffin wax, polyethylene wax, polyethylene / polypropylene wax, (ethylene / propylene / styrene) copolymer, (butylene / propylene / styrene) copolymer, liquid paraffin, liquid isoparaffin, pristane, poly Examples include isobutylene, hydrogenated polyisobutene, microcrystalline wax, and petroleum jelly. These may be used individually by 1 type and may use 2 or more types together.

  Examples of the higher fatty acid include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, undecylenic acid, oleic acid, linoleic acid, linolenic acid, arachidonic acid, eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA). , Isostearic acid, 12-hydroxystearic acid and the like. These may be used individually by 1 type and may use 2 or more types together.

  Examples of the higher alcohol include lauryl alcohol, myristyl alcohol, palmityl alcohol, stearyl alcohol, behenyl alcohol, hexadecyl alcohol, oleyl alcohol, isostearyl alcohol, hexyl decanol, octyldodecanol, cetostearyl alcohol, 2-decyltetra alcohol. Examples include decinol, cholesterol, phytosterol, polyoxyethylene cholesterol ether, monostearyl glycerin ether (batyl alcohol), monooleyl glyceryl ether (ceralkyl alcohol), and the like. These may be used individually by 1 type and may use 2 or more types together.

  Examples of the ester oil include diisobutyl adipate, 2-hexyldecyl adipate, di-2-heptylundecyl adipate, N-alkyl glycol monoisostearate, isocetyl isostearate, trimethylolpropane triisostearate, di- Ethylene glycol 2-ethylhexanoate, cetyl 2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, cetyl octoate, octyldodecyl gum ester, oleyl oleate, olein Octyldodecyl acid, decyl oleate, neopentyl glycol dioctanoate, neopentyl glycol dicaprate, triethyl citrate, 2-ethylhexyl succinate, amyl acetate, ethyl acetate , Butyl acetate, isocetyl stearate, butyl stearate, diisopropyl sebacate, di-2-ethylhexyl sebacate, cetyl lactate, myristyl lactate, isononyl isononanoate, isotridecyl isononanoate, isopropyl palmitate, 2-ethylhexyl palmitate, palmitic acid 2-hexyldecyl, 2-heptylundecyl palmitate, cholesteryl 12-hydroxystearylate, dipentaerythritol fatty acid ester, isopropyl myristate, octyldodecyl myristate, 2-hexyldecyl myristate, myristyl myristate, hexyl dimethyloctanoate Decyl, ethyl laurate, hexyl laurate, N-lauroyl-L-glutamic acid-2-octyldodecyl ester, lauroylsa Cosin isopropyl ester diisostearyl malate, etc .; acetoglyceryl, glyceryl triisooctanoate, glyceryl triisostearate, glyceryl triisopalmitate, glyceryl tribehenate, glyceryl monostearate, glyceryl di-2-heptylundecanoate, trimyristate Examples thereof include glyceride oils such as glyceryl and diglyceryl myristate. These may be used individually by 1 type and may use 2 or more types together.

  Examples of the silicone oil include dimethylpolysiloxane, tristrimethylsiloxymethylsilane, caprylylmethicone, phenyltrimethicone, tetrakistrimethylsiloxysilane, methylphenylpolysiloxane, methylhexylpolysiloxane, methylhydrogenpolysiloxane, dimethylsiloxane Low to high viscosity linear or branched organopolysiloxane such as methylphenylsiloxane copolymer, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, tetramethyltetrahydrogencyclotetrasiloxane , Cyclic organopolysiloxanes such as tetramethyltetraphenylcyclotetrasiloxane, amino-modified organopolysiloxanes, pylori -Modified organopolysiloxane, pyrrolidone carboxylic acid-modified organopolysiloxane, highly polymerized gum-like dimethylpolysiloxane, gum-like amino-modified organopolysiloxane, gum-like dimethylsiloxane / methylphenylsiloxane copolymer silicone rubber, silicone Cyclic organopolysiloxane solution of gum and rubber, trimethylsiloxysilicic acid, cyclic siloxane solution of trimethylsiloxysilicic acid, higher alkoxy modified silicone such as stearoxy silicone, higher fatty acid modified silicone, alkyl modified silicone, long chain alkyl modified silicone, amino acid Examples include modified silicone, fluorine-modified silicone, silicone resin, and dissolved silicone resin. These may be used individually by 1 type and may use 2 or more types together.

  Examples of the fluorinated oil include perfluoropolyether, perfluorodecalin, and perfluorooctane. These may be used individually by 1 type and may use 2 or more types together.

  The oil content is preferably 0.8% by mass or more and 55% by mass or less, and more preferably 2.5% by mass or more and 40% by mass or less with respect to the total amount of the emulsified composition for hair. If the oil content is within the preferred numerical range, hair gloss, hair smoothness, hair stiffness, and hair softness when using the hair emulsified composition are good, and hair A squeaky feeling is reduced and a stable emulsion is obtained.

-Other ingredients-
The other component is not particularly limited as long as it can be dissolved in the oil, and can be appropriately selected and added from components usually used in the oil phase of an emulsified composition for hair.
Examples of the other components include humectants, antioxidants, ultraviolet absorption or scattering agents, vitamins, bactericides, and anti-dandruff agents. These may be used individually by 1 type and may use 2 or more types together.

Examples of the humectant include polyglyceryl monolaurate and diethylene glycol monoalkyl ether.
Examples of the antioxidant include dibutylhydroxytoluene, α-tocopherol, and butylhydroxyanneal.
Examples of the ultraviolet absorbing or scattering agent include 2-hydroxy-4-methoxybenzophenone, octyldimethylparaaminobenzoate, ethylhexylparamethoxycynamate, titanium oxide, kaolin, and talc.
Examples of the vitamins include vitamin A, vitamin D, vitamin E, vitamin F, vitamin K, vitamin P, vitamin U, carnitine, ferulic acid, γ-oryzanol, α-lipoic acid, orotic acid, and derivatives thereof. Is mentioned.
Examples of the bactericides include triclosan and trichlorocarban.
Examples of the anti-dandruff agent include piroctone olamine and zinc pyrithione.

-(B) Aqueous phase-
The aqueous phase of the component (B) contains an amphoteric surfactant and water, and further contains other components as necessary.

-Amphoteric surfactant-
The amphoteric surfactant is contained to emulsify the oil phase and the aqueous phase.
The amphoteric surfactant is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include betaine amphoteric surfactants, aminopropionic acid amphoteric surfactants, and amino acid amphoteric surfactants. Can be mentioned. These may be used individually by 1 type and may use 2 or more types together. Among these, amino acid-based amphoteric surfactants and betaine-based amphoteric surfactants are preferable from the viewpoint of affinity of the obtained emulsion composition for hair to hair, and amino-acid-based amphoteric surfactants and imidazolinium betaines are preferred. An amphoteric surfactant is more preferable.

Examples of the amino acid-based amphoteric surfactants include alkylamino fatty acids or derivatives and salts thereof. Examples of the alkylamino fatty acid include laurylamino fatty acid (alkyl group having 12 carbon atoms), myristylamino fatty acid (alkyl group having 14 carbon atoms), palmitylamino fatty acid (alkyl group having 16 carbon atoms), stearylamino fatty acid ( And alkyl group having 18 carbon atoms and derivatives thereof. These may be used individually by 1 type and may use 2 or more types together. Of these, N- [3-alkyl (12,14) oxy-2-hydroxypropyl] -L-arginine and its derivatives, and laurylamino fatty acid and its derivatives, whose alkyl groups are 12 and 14, are preferred. [3-Alkyl (12,14) oxy-2-hydroxypropyl] -L-arginine hydrochloride and N-lauroyl-L-arginine are more preferred.
As the counter ion of the salt, for example, alkali metal ions are preferable, sodium ions and potassium ions are more preferable, and sodium ions are particularly preferable.

  Commercially available products can be used as the amino acid-based amphoteric surfactant. Examples of the commercially available products include trade name: Amisafe LMA-60 (N- [3-alkyl (12,14) oxy-2-hydroxy Propyl] -L-arginine hydrochloride), trade name: Amisafe AL-01 (N-lauroyl-L-arginine), (manufactured by Ajinomoto Co., Inc.) and the like. These may be used individually by 1 type and may use 2 or more types together.

  Examples of the betaine amphoteric surfactants include alkylbetaine amphoteric surfactants, amide betaine amphoteric surfactants, sulfobetaine amphoteric surfactants, phosphobetaine surfactants, and imidazolinium betaine amphoteric interfaces. An active agent etc. are mentioned. These may be used individually by 1 type and may use 2 or more types together. Among these, imidazolinium betaine-based amphoteric surfactants are preferable.

  Examples of the imidazolinium betaine amphoteric surfactant include coconut oil alkyl-N-hydroxyethyl imidazolinium betaine, coconut oil alkyl-N-carboxyethyl-N-hydroxyethyl imidazolinium betaine, and 2-coconut oil. Examples include alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine. These may be used individually by 1 type and may use 2 or more types together. Among these, 2-coconut oil alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine is preferable.

  As said imidazolinium betaine type | system | group amphoteric surfactant, a commercial item can be used, As said commercial item, for example, brand name: Amphithol 20Y-B (2-coconut oil alkyl-N-carboxymethyl-N-) And hydroxyethyl imidazolinium betaine, manufactured by Kao Corporation).

  Examples of the alkylbetaine amphoteric surfactants include alkyldimethylaminoacetic acid betaines. Examples of the alkyldimethylaminoacetic acid betaine include lauryldimethylaminoacetic acid betaine, myristyldimethylaminoacetic acid betaine, and stearyldimethylaminoacetic acid betaine. These may be used individually by 1 type and may use 2 or more types together.

  Examples of the amidobetaine amphoteric surfactant include alkylamidopropylbetaine. Examples of the alkylamidopropyl betaine include coconut oil fatty acid amidopropyl betaine (cocamidopropyl betaine), lauric acid amidopropyl betaine, and isostearamidopropyl betaine. These may be used individually by 1 type and may use 2 or more types together.

Examples of the sulfobetaine amphoteric surfactants include hydroxysulfobetaine amphoteric surfactants and amide sulfobetaine amphoteric surfactants.
Examples of the hydroxysulfobetaine amphoteric surfactants include coconut oil fatty acid dimethylaminohydroxysulfobetaine, lauryldimethylaminohydroxysulfobetaine, and laurylhydroxysulfobetaine. These may be used individually by 1 type and may use 2 or more types together.
Examples of the amidosulfobetaine-based amphoteric surfactant include dodecylaminomethyldimethylsulfopropylbetaine and octadecylaminomethyldimethylsulfopropylbetaine. These may be used individually by 1 type and may use 2 or more types together.

  Examples of the phosphobetaine surfactant include alkylhydroxyphosphobetaine. Examples of the alkyl hydroxyphosphobetaine include lauryl hydroxyphosphobetaine, myristyl hydroxyphosphobetaine, stearyl hydroxyphosphobetaine, and the like. These may be used individually by 1 type and may use 2 or more types together.

  Examples of the aminopropionic acid-based amphoteric surfactant include sodium laurylaminodipropionate and triethanolamine laurylaminodipropionate. These may be used individually by 1 type and may use 2 or more types together.

  The content of the amphoteric surfactant is preferably 0.2% by mass or more and 10% by mass or less, and more preferably 1% by mass or more and 10% by mass or less with respect to the total amount of the emulsified composition for hair. When the content is less than 0.2% by mass, emulsification may be difficult. When the content exceeds 10% by mass, the hair may have a sticky feeling.

  The mass ratio (oil content / amphoteric surfactant) between the oil content (mass%) and the double-sided surfactant content (mass%) is preferably 0.5 or more and 10 or less, and preferably 1 or more and 5 or less. More preferred. If the mass ratio (oil content / amphoteric surfactant) between the content of the oil and the content of the double-sided surfactant is within the above range, the state of the hair is determined when the resulting hair emulsion composition is used. Can be good.

--- Water--
There is no restriction | limiting in particular as said water, According to the objective, it can select suitably, For example, pure water, such as ion-exchange water, ultrafiltration water, reverse osmosis water, distilled water, or ultrapure water etc. are mentioned. It is done.
There is no restriction | limiting in particular as content of the said water, Although it can select suitably according to the objective, 40 to 90 mass% is preferable with respect to the emulsion total composition for hair.

-Other ingredients-
The other component is not particularly limited as long as it can be dissolved in the aqueous phase, and can be appropriately selected and added from components usually used in the aqueous phase of the emulsified composition for hair. Examples of the other components include chelating agents, antioxidants, pH adjusters, vitamins, amino acids, anti-inflammatory agents, preservatives, and fragrances. These may be used individually by 1 type and may use 2 or more types together.

Examples of the chelating agent include ethylenediaminetetraacetate, hexametaphosphate, gluconate and the like.
Examples of the antioxidant include ascorbic acid.
Examples of the pH adjuster include citric acid, hydrochloric acid, triethanolamine, sodium hydroxide, potassium hydroxide, succinic acid, aqueous ammonia, triisopropanolamine, and phosphoric acid.
Examples of the vitamins include vitamin B group.
Examples of the amino acids include glycine, alanine, valine, leucine, isoleucine, phenylalanine, tryptophan, cystine, cysteine, methionine, proline, hydroxyproline, aspartic acid, glutamic acid, arginine, histidine, lysine, or derivatives thereof. Can be mentioned.
Examples of the anti-inflammatory agent include dipotassium glycyrrhizinate.
Examples of the preservative include methylchloroisothiazolinone, parabens, phenoxyethanol and the like.

  In the high-pressure emulsification step, the ratio of the oil phase to the water phase is preferably 50% by mass or more and 99% by mass or less for the water phase and 1% by mass or more and 50% by mass or less for the oil phase.

<Other processes>
There is no restriction | limiting in particular as said other process, According to the objective, it can select suitably, For example, a preliminary emulsification process etc. are mentioned.

-Pre-emulsification process-
The preliminary emulsification step is a step of stirring the oil phase and the aqueous phase before the high-pressure emulsification treatment. By the preliminary emulsification step, a composition in which the oil phase is emulsified in the aqueous phase can be obtained.
The apparatus used in the preliminary emulsification step is not particularly limited as long as a composition in which the oil phase is dispersed in the aqueous phase is obtained, and can be appropriately selected depending on the purpose. For example, shearing and total mixing Examples thereof include a stirring device having a plurality of stirring blades (propeller, turbine, disper, etc.).

  Here, FIG. 1 is a schematic view showing an example of a high-pressure emulsification apparatus used in the method for producing an emulsified composition for hair of the present invention. The main structure of this high-pressure homogenizer is composed of a pressurizing part for supplying a sample solution at a constant pressure and a homovalve part for generating homogenization. The pressurizing part is a plunger pump with high quantitativeness, and the homovalve part is composed of a valve 4, a valve seat 3 and an impact ring 5. The valve is fixedly pressed against the valve seat with a spring and hydraulic pressure. The coarse particles 1 before the high-pressure homogenizer treatment pressurized by the pump pass through the gap between the valve and the valve seat (this sample solution has a high speed flow of 300 m / sec), and the sample solution surrounds the valve. Collide with. High energy generated in the gap between the valve and the valve seat shears the dispersed phase efficiently, and atomization occurs, and the target fine particles 2 after the high-pressure homogenizer treatment are obtained from the coarse particles 1 before the high-pressure homogenizer treatment.

<Emulsion composition for hair>
The emulsified composition for hair is obtained by the method for producing an emulsified composition for hair of the present invention.

-Average particle size by scattering intensity distribution-
The volume average particle diameter of the emulsified composition for hair is preferably 0.2 μm or more and 2 μm or less, and more preferably 0.4 μm or more and 1 μm or less. When the volume average particle diameter is in the range of 0.2 μm or more and 2 μm or less, adsorption of the obtained emulsion composition for hair to hair is improved, and the smoothness of hair during rinsing can be improved.
The volume average particle diameter can be measured using, for example, a dynamic light scattering method (ELSZ1000ZS, manufactured by Otsuka Electronics Co., Ltd.).

-PH-
The pH at 25 ° C. of the emulsified composition for hair is preferably 3 or more and 7.5 or less, and more preferably 4 or more and 6 or less. If the pH is less than 3, irritation to the background may occur, and if it exceeds 7.5, the amphoteric surfactant will not have a positive charge, so the hair of the emulsified composition for hair The adsorptive power to can be reduced. The pH can be measured according to the quasi-drug raw material standard general test method pH measurement method.

  The pH can be adjusted with a pH adjuster. The pH adjuster is not particularly limited as long as it is usually used in an emulsified composition for hair, and can be appropriately selected according to the purpose. For example, phosphoric acid, hydrochloric acid, citric acid, lactic acid, Examples include glycolic acid. These may be used individually by 1 type and may use 2 or more types together.

-Use-
The emulsified composition for hair is excellent in hair gloss, hair smoothness, hair firmness, hair softness, hair antistatic effect, and hair squeakiness reduction effect. For example, hair treatment Suitable for hair conditioner, hair cream and the like.

  Examples of the present invention will be described below, but the present invention is not limited to these examples. In addition, content of each component of an Example and a comparative example is a pure part conversion amount.

Example 1
1 part by mass of alkyl (C12,14) oxyhydroxypropylarginine hydrochloride (Amisafe LMA-60, manufactured by Ajinomoto Co., Inc.) as an amphoteric surfactant was mixed with 97 parts by mass of ion-exchanged water to obtain an aqueous phase. 98 parts by mass of the aqueous phase and 2 parts by mass of dimethylpolysiloxane (SH200, manufactured by Toray Industries, Inc.) as an oil phase were placed in a homomixer (HOMOMIXER MARII Model 2.5, manufactured by Primix Co., Ltd.) at 4,000 rpm. Stir for 5 minutes. Then, the obtained mixture was put into a high-pressure emulsification apparatus (LAB2000, manufactured by APV Gaulin), and high-pressure emulsification treatment was performed at a pressure of 50 MPa to obtain an emulsified composition for hair of Example 1.

(Comparative Example 1)
In Example 1, the emulsification composition for hair of the comparative example 1 was obtained like Example 1 except not having performed the high pressure emulsification process.

(Example 2)
To 94.5 parts by mass of ion-exchanged water, 3 parts by mass of 2-coconut oil alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine (Amphithol 20Y-B, manufactured by Kao Corporation) as an amphoteric surfactant, Then, 0.5 parts by mass of hydrochloric acid (manufactured by Kanto Chemical Co., Ltd.) was mixed to obtain an aqueous phase. 98 parts by mass of the aqueous phase and 2 parts by mass of dimethylpolysiloxane (SH200, manufactured by Toray Industries, Inc.) as an oil phase were placed in a homomixer (HOMOMIXER MARKII Model 2.5, manufactured by Primix Co., Ltd.) at 4,000 rpm. Stir for 5 minutes. Then, the obtained mixture was put into a high-pressure emulsification apparatus (LAB2000, manufactured by APV Gaulin), and high-pressure emulsification treatment was performed at a pressure of 50 MPa to obtain an emulsified composition for hair of Example 2.

(Comparative Example 2)
In Example 2, an emulsified composition for hair of Comparative Example 2 was obtained in the same manner as Example 2 except that high-pressure emulsification treatment was not performed.

(Example 3)
To 96.5 parts by mass of ion-exchanged water, 1 part by mass of N-lauroyl-L-arginine (Amisafe AL-01, Ajinomoto Co., Inc.) as an amphoteric surfactant and 0.5 parts by mass of hydrochloric acid (manufactured by Kanto Chemical Co., Inc.) ) To obtain an aqueous phase. 98 parts by mass of the aqueous phase and 2 parts by mass of jojoba oil (made by Wako Pure Chemical Industries, Ltd.) as an oil phase were heated to 80 ° C., respectively, and a homomixer (HOMOMIXER MARKII Model 2.5, made by Primex Corporation) was used. And stirred at 4,000 rpm for 5 minutes. Then, the obtained mixture was put into a high-pressure emulsification apparatus (LAB2000, manufactured by APV Gaulin), and high-pressure emulsification treatment was performed at a pressure of 50 MPa to obtain an emulsified composition for hair of Example 3.

(Comparative Example 3)
In Example 3, the emulsified composition for hair of Comparative Example 3 was obtained in the same manner as in Example 3 except that the high-pressure emulsification treatment was not performed.

The pH, viscosity, and volume average particle size of the emulsified compositions for hair of Examples 1 to 3 and Comparative Examples 1 to 3 were measured as follows. The results are shown in Table 1.
The pH was measured at 25 ° C. using a pH meter (pH / ION / COND METER F-74, manufactured by Horiba, Ltd.).
The average particle diameter was measured by a dynamic light scattering method (ELSZ1000ZS, manufactured by Otsuka Electronics Co., Ltd.).

  About each emulsified composition for hair of Examples 1 to 3 and Comparative Examples 1 to 3, as described below, “adhesion to hair at the time of application”, “feel of hair squeak”, “hair gloss” , "Hair smoothness", "Hair combing", "Hair stiffness", "Hair softness", "Hair mass", "Hair feeling of hair", "Hairiness of hair", " The “antistatic effect of hair” and “emulsification stability” were evaluated. The results are shown in Table 1.

<Adhesion to hair at the time of application, squeaky hair, hair shine, hair smoothness, hair combing, hair stiffness, hair softness, hair cohesion, hair dryness, and hair No stickiness>
About 20 female professional panels, after washing the whole hair with a commercially available shampoo, 5 g of the emulsified composition for each hair was applied, and “adhesion to the hair during application” was evaluated based on the following evaluation criteria. The applied emulsified composition for hair was rinsed with running water, and the “squeaking sensation of hair” was evaluated based on the following evaluation criteria. Thereafter, the hair was dried with a dryer. After drying, "Hair gloss", "Hair smoothness", "Hair combing", "Hair stiffness", "Hair softness", "Hair mass", "Hair feel", And "no stickiness of hair" was evaluated based on the following evaluation criteria.
The above-mentioned “feel of squeaky hair” refers to a non-smooth and squeezed feel that occurs when hairs are rubbed or intertwined during rinsing.

-Feeling of close contact with hair during application-
◎: At least 18 out of 20 respondents said that the emulsified composition for hair was in close contact with the hair at the time of application. ○: Responded that the emulsified composition for hair was intimately adhered to the hair at the time of application. 14 to 17 out of 20 people △: 8 to 13 out of 20 people who answered that the emulsified composition for hair was well adhered to the hair at the time of application. 7 or less of 20 respondents who answered that the emulsified composition for hair is in good contact

-Evaluation criteria for squeaky hair after shampooing-
◎: More than 18 out of 20 people answered that there was no squeaky hair after shampooing ○: 14 or more out of 20 people answered that there was no squeaky hair after shampooing △: Shampoo No more than 8 out of 20 people answered that there was no squeaky hair after the shampooing X: No more than 7 out of 20 people answered that there was no squeaky hair after shampooing

-Evaluation criteria for hair gloss-
◎: More than 18 out of 20 people who answered that the hair is shiny ○: More than 14 people out of 20 who answered that the hair is shiny △: Those who answered that the hair is shiny 8 to 13 out of 20 people ×: 7 or less of 20 people who answered that the hair is shiny

-Evaluation criteria for smoothness of hair-
◎: 18 or more of 20 respondents who answered that the hair is smooth ○: 14 or more of 20 respondents who answered that the hair was smooth △: Respondent that the hair was smooth 8 or 13 out of 20 people 13 or less ×: 7 or less of 20 people answered that the hair is smooth

-Evaluation criteria for combing hair-
◎: More than 18 out of 20 people answered that hair combing is good ○: 14 or more out of 20 people answered that hair combing is good △: Good hair combing 8 to 13 respondents out of 20 respondents X: 7 or fewer respondents out of 20 responded that combing hair is good

-Evaluation criteria for hair stiffness-
◎: More than 18 out of 20 people answered that hair is firm ○: 14 or more out of 20 people who answered that hair is firm △: Those who answered that hair is firm 8 to 13 out of 20 people X: 7 or less of 20 people answered that the hair is stiff

-Evaluation criteria for softness of hair-
◎: More than 18 out of 20 respondents said that their hair was soft ○: 14 or more out of 20 respondents who answered that their hair was soft △: 8 out of 20 respondents said that their hair was soft 13 people or less ×: 7 or less of 20 people answered that their hair was soft

-Evaluation criteria for hair mass-
◎: More than 18 out of 20 respondents said that the hair was well organized ○: 14 or more out of 20 respondents said that the hair was well organized △: Respondents said that the hair was well organized 8 or 13 out of 20 people 13 or less ×: 7 or less of 20 people answered that the hair is well-organized

-Evaluation criteria for the smoothness of hair-
◎: More than 18 out of 20 respondents said that they had a smooth feeling on hair ○: 14 or more out of 20 persons who answered that they had a feeling of smooth hair △: 8 to 13 of 20 respondents responded ×: 7 or less of 20 respondents said that there was a smooth feeling on the hair

-Evaluation criteria for stickiness of hair-
◎: More than 18 out of 20 respondents answered that the hair was not sticky ○: 14 or more out of 20 respondents answered that the hair was not sticky △: 20 respondents answered that the hair was not sticky 8 or more and 13 or less of them ×: 7 or less of 20 who answered that the hair was not sticky

<Antistatic effect of hair>
As human hair (Chinese, Viewlux Co., Ltd.), a length of 250 mm and an amount of 15 g to 16 g were used. After washing the whole hair with a commercially available shampoo, 0.5 g of each hair emulsifying composition was applied, rinsed with running water, and dried with a drier. The entire hair after drying was sandwiched between combing testers (SK-3A, manufactured by Techno Hashimoto Co., Ltd.) so as to have a width of 50 mm and a thickness of 2 mm, and the surface charge amount of the hair was measured. From the average value of the surface charge amount of the obtained hair, the antistatic effect of the hair was evaluated based on the following criteria.
-Evaluation criteria for antistatic effect of hair-
A: The average value of the surface charge amount of the hair is 8 kV or more. ○: The average value of the surface charge amount of the hair is 4 kV or more and less than 8 kV. Δ: The average value of the surface charge amount of the hair is 0 kV or more and less than 4 kV. Is less than 0 kV

<Emulsification stability>
80 g of the obtained emulsified composition for hair was put in a transparent screw tube (product name: Vials With Screw Cap / SV-100, manufactured by Nichiden Rika Glass Co., Ltd.), sealed, and left at 25 ° C. for 1 month. The appearance of the emulsified composition after being allowed to stand for 1 month was observed and evaluated based on the following criteria.
-Evaluation criteria for emulsion stability-
◎: No separation was observed. ○: Creaming was observed. △: Creaming and oil floating were observed. ×: Oil and water were completely separated into two phases. The creaming was the specific gravity between the oil phase and the water phase. The difference indicates that the oily emulsion floats.

From the results of Table 1, the hair emulsified compositions of Examples 1 to 3 that were subjected to high pressure emulsification treatment were compared with those of Comparative Examples 1 to 3 that were not subjected to high pressure emulsification treatment even if the type of amphoteric surfactant was different. It was shown that the evaluation results are improved as compared with the emulsified composition for hair. In particular, the evaluation results of the evaluation of the smoothness of the hair of Example 1, the reduction of squeakiness of the hair of Example 2, and the softness of the hair of Example 3 were improved by two levels.
From the above, the emulsion composition for hair obtained by the method for producing an emulsion composition for hair of the present invention has the effect of reducing the gloss of hair, the smoothness of hair, the squeaky feeling of hair, the stiffness of hair, the softness of hair. It was revealed that the antistatic effect of hair and hair was excellent.

Example 4
94 parts by mass of ion-exchanged water was mixed with 1 part by mass of alkyl (C12,14) oxyhydroxypropylarginine hydrochloride (Amisafe LMA-60, manufactured by Ajinomoto Co., Inc.) as an amphoteric surfactant to obtain an aqueous phase. 95 parts by mass of the aqueous phase and 5 parts by mass of dimethylpolysiloxane (SH200, manufactured by Toray Industries, Inc.) as an oil phase are placed in a homomixer (HOMOMIXER MARKII Model 2.5, manufactured by Primix Co., Ltd.) at 4,000 rpm. Stir for 5 minutes. Then, the obtained mixture was put into a high-pressure emulsifier (LAB2000, manufactured by APV Gaulin) and subjected to a high-pressure emulsification treatment at a pressure of 0.5 MPa to obtain an emulsified composition for hair of Example 4.

(Examples 5 to 10)
In Example 4, the hair emulsification compositions of Examples 5 to 10 were obtained in the same manner as in Example 4 except that the high-pressure emulsification treatment was performed at the pressure shown in Table 2.

(Comparative Example 4)
In Example 4, the emulsified composition for hair of Comparative Example 4 was obtained in the same manner as Example 4 except that the high-pressure emulsification treatment was performed at a pressure of 0.1 MPa.

  The pH and volume average particle diameter of the obtained emulsion compositions for hair of Examples 4 to 10 and Comparative Example 4 were measured in the same manner as in Example 1, and "feeling of adhesion to hair during application" , "Squeezing hair after shampooing", "Hair shine", "Smooth hair", "Hair stiffness", "Hair softness", "Hair mass", "Hair feel", “Smoothness of hair”, “antistatic effect of hair”, and “emulsification stability” were evaluated in the same manner as in Example 1. The results are shown in Table 2.

(Example 11)
To 93.5 parts by mass of ion-exchanged water, 1 part by mass of 2-coconut oil alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine (Amphithol 20Y-B, manufactured by Kao Corporation) as an amphoteric surfactant, Then, 0.5 parts by mass of hydrochloric acid (manufactured by Kanto Chemical Co., Ltd.) was mixed to obtain an aqueous phase. 95 parts by mass of the aqueous phase and 5 parts by mass of dimethylpolysiloxane (SH200, manufactured by Toray Industries, Inc.) as an oil phase are placed in a homomixer (HOMOMIXER MARKII Model 2.5, manufactured by Primix Co., Ltd.) at 4,000 rpm. Stir for 5 minutes. Then, the obtained mixture was put into a high-pressure emulsifier (LAB2000, manufactured by APV Gaulin) and subjected to a high-pressure emulsification treatment at a pressure of 0.5 MPa to obtain an emulsified composition for hair of Example 11.

(Examples 12 to 17)
In Example 11, the emulsified compositions for hair of Examples 12 to 17 were obtained in the same manner as Example 11 except that the pressure of the high-pressure emulsification treatment was treated at the pressure shown in Table 3.

(Comparative Example 5)
In Example 11, the emulsified composition for hair of Comparative Example 5 was obtained in the same manner as Example 11 except that the high-pressure emulsification treatment was performed at a pressure of 0.1 MPa.

  The pH and volume average particle diameter of the obtained emulsion compositions for Examples 11 to 17 and Comparative Example 5 were measured in the same manner as in Example 1, and “feeling of adhesion to hair during application” was measured. , "Squeezed hair after shampooing", "Hair gloss", "Smooth hair", "Hair stiffness", "Hair softness", "Hair mass", "Hair feeling of hair", “Smoothness of hair”, “antistatic effect of hair”, and “emulsification stability” were evaluated in the same manner as in Example 1. The results are shown in Table 3.

(Example 18)
To 93.5 parts by mass of ion-exchanged water, 1 part by mass of N-lauroyl-L-arginine (Amisafe AL-01, manufactured by Ajinomoto Co., Inc.) as an amphoteric surfactant and 0.5 parts by mass of hydrochloric acid (manufactured by Kanto Chemical Co., Inc.) ) To obtain an aqueous phase. 95 parts by mass of the aqueous phase and 5 parts by mass of dimethylpolysiloxane (SH200, manufactured by Toray Industries, Inc.) as an oil phase were heated to 80 ° C., respectively, and a homomixer (HOMOMIXER MARKII Model 2.5, manufactured by Primex Corporation) was used. And stirred at 4,000 rpm for 5 minutes. Then, the obtained mixture was put into a high-pressure emulsifier (LAB2000, manufactured by APV Gaulin) and subjected to a high-pressure emulsification treatment at a pressure of 0.5 MPa to obtain an emulsified composition for hair of Example 18.

(Examples 19 to 24)
In Example 18, the emulsified compositions for hair of Examples 19 to 24 were obtained in the same manner as in Example 18 except that the high pressure emulsification treatment was performed at the pressure shown in Table 4.

(Comparative Example 6)
In Example 18, the emulsified composition for hair of Comparative Example 6 was obtained in the same manner as in Example 18 except that high-pressure emulsification was performed at a pressure of 0.1 MPa.

  The pH and volume average particle diameter of the obtained emulsion compositions for hair of Examples 18 to 24 and Comparative Example 6 were measured in the same manner as in Example 1, and “feeling of close contact with hair during application” was measured. , "Squeezed hair after shampooing", "Hair gloss", "Smooth hair", "Hair stiffness", "Hair softness", "Hair mass", "Hair feeling of hair", “Smoothness of hair”, “antistatic effect of hair”, and “emulsification stability” were evaluated in the same manner as in Example 1. The results are shown in Table 4.

(Examples 25-46)
Based on Tables 5-8, the emulsion composition for hair of Examples 25-46 was manufactured. Specifically, in ion-exchanged water, alkyl (C12,14) oxyhydroxypropyl arginine hydrochloride (Amisafe LMA-60, manufactured by Ajinomoto Co., Inc.), methylparaben (Platings-M, Ueno Pharmaceutical Co., Ltd.) as an amphoteric surfactant. Product) and butylene glycol (1.3-butylene glycol, manufactured by Daicel Corporation) to prepare an aqueous phase. The water phase, dimethylpolysiloxane (SH200, manufactured by Toray Industries, Inc.) and phenoxyethanol (2-phenoxyethanol S, manufactured by Kobayashi Fragrance Co., Ltd.) as an oil phase are combined with a homomixer (HOMOMIXER MARKII Model 2.5, manufactured by Primix Co., Ltd.). ) And stirred at 4,000 rpm for 5 minutes. Then, the obtained mixture was put into a high-pressure emulsification apparatus (LAB2000, manufactured by APV Gaulin), and high-pressure emulsification treatment was performed at a pressure of 50 MPa to obtain emulsified compositions for hair of Examples 25 to 46.

  The pH and volume average particle diameter of the obtained hair emulsion compositions of Examples 25 to 46 were measured in the same manner as in Example 1 to determine “adhesion to hair during application” and “after shampooing”. Hair squeakiness, hair gloss, hair smoothness, hair firmness, hair softness, hair cohesion, hair dryness, hair stickiness ”,“ Antistatic effect of hair ”, and“ Emulsification stability ”were evaluated in the same manner as in Example 1. The results are shown in Tables 5-8.

(Example 47)
94 parts by mass of ion-exchanged water was mixed with 1 part by mass of alkyl (C12,14) oxyhydroxypropylarginine hydrochloride (Amisafe LMA-60, manufactured by Ajinomoto Co., Inc.) as an amphoteric surfactant to obtain an aqueous phase. 95 parts by mass of the aqueous phase and 5 parts by mass of dimethylpolysiloxane (SH200, manufactured by Toray Industries, Inc.) as an oil phase are placed in a homomixer (HOMOMIXER MARKII Model 2.5, manufactured by Primix Co., Ltd.) at 4,000 rpm. Stir for 5 minutes. Then, the obtained mixture was put into a high-pressure emulsification apparatus (LAB2000, manufactured by APV Gaulin), and high-pressure emulsification treatment was performed at a pressure of 50 MPa to obtain an emulsified composition for hair of Example 47.

(Examples 48 to 52)
In Example 47, the hair emulsification composition of Examples 48-52 was obtained like Example 47 except having changed the frequency | count of the high pressure emulsification process into the frequency shown in Table 9, and performing the high pressure emulsification process. .

(Comparative Example 7)
In Example 47, the emulsified composition for hair of Comparative Example 7 was obtained in the same manner as in Example 47 except that the high-pressure emulsification treatment was not performed.

  The volume average particle diameters of the obtained hair emulsification compositions of Examples 47 to 52 and Comparative Example 7 were measured in the same manner as in Example 1, and the zeta potential of the hair emulsification composition (product name) was measured. : ELSZ1000ZS (manufactured by Otsuka Electronics Co., Ltd.), “feeling of close contact with hair during application”, “feeling of squeezed hair after shampooing”, “hair gloss”, “smoothness of hair”, “ Examples of `` Hair stiffness '', `` Hair softness '', `` Hair mass '', `` Hair feeling of hair '', `` Hair stickiness '', `` Hair antistatic effect '', and `` Emulsion stability '' Evaluation was performed in the same manner as in 1. The results are shown in Table 9.

(Example 53)
1 part by mass of alkyl (C12,14) oxyhydroxypropyl arginine hydrochloride (Amisafe LMA-60, manufactured by Ajinomoto Co., Inc.) as an amphoteric surfactant was mixed with 89 parts by mass of ion-exchanged water to obtain an aqueous phase. 90 parts by mass of the aqueous phase and 10 parts by mass of dimethylpolysiloxane (SH200, manufactured by Toray Industries, Inc.) as an oil phase were placed in a homomixer (HOMOMIXER MARKII Model 2.5, manufactured by Primex Corporation) at 4,000 rpm. Stir for 5 minutes. Then, the obtained mixture was put into a high-pressure emulsification apparatus (LAB2000, manufactured by APV Gaulin), and high-pressure emulsification treatment was performed at a pressure of 50 MPa to obtain an emulsified composition for hair of Example 53.

(Examples 54 to 58)
In Example 53, hair emulsification compositions of Examples 54 to 58 were obtained in the same manner as in Example 53 except that the number of times of high pressure emulsification treatment was changed to the number of times shown in Table 9 and high pressure emulsification treatment was performed. .

(Comparative Example 8)
In Example 53, the emulsified composition for hair of Comparative Example 8 was obtained in the same manner as in Example 53 except that the high-pressure emulsification treatment was not performed.

  The volume average particle diameters of the obtained hair emulsification compositions of Examples 53 to 58 and Comparative Example 8 were measured in the same manner as in Example 1, and the zeta potential of the hair emulsification composition (product name) was measured. : ELSZ1000ZS (manufactured by Otsuka Electronics Co., Ltd.), “feeling of close contact with hair during application”, “feeling of squeezed hair after shampooing”, “hair gloss”, “smoothness of hair”, “ Examples of `` Hair stiffness '', `` Hair softness '', `` Hair mass '', `` Hair feeling of hair '', `` Hair stickiness '', `` Hair antistatic effect '', and `` Emulsion stability '' Evaluation was performed in the same manner as in 1. The results are shown in Table 10.

(Example 59)
94.8 parts by mass of ion-exchanged water, 1 part by mass of alkyl (C12,14) oxyhydroxypropylarginine hydrochloride (Amisafe LMA-60, manufactured by Ajinomoto Co., Inc.) as an amphoteric surfactant, 0.2 parts by mass of methyl paraben, A water phase was prepared by mixing 3 parts by weight of butylene glycol. 99.5 parts by mass of the aqueous phase, 0.8 part by mass of dimethylpolysiloxane (SH200, manufactured by Toray Industries, Inc.) and 0.2 part by mass of phenoxyethanol as an oil phase were mixed with a homomixer (HOMOMIXER MARKII Model 2.5, Primix Corporation). And stirred for 5 minutes at 4,000 rpm. Then, the obtained mixture was put into a high-pressure emulsification apparatus (LAB2000, manufactured by APV Gaulin) and subjected to high-pressure emulsification treatment at a pressure of 50 MPa to obtain an emulsified composition for hair of Example 59.

(Examples 60 to 68)
In Example 59, the emulsified compositions for hair of Examples 60 to 68 were prepared in the same manner as in Example 59 except that the amounts of amphoteric surfactant and dimethylpolysiloxane were changed to the amounts shown in Tables 11 and 12. Obtained.

  The pH and volume average particle diameter of the obtained hair emulsification compositions of Examples 59 to 68 were measured in the same manner as in Example 1, and “adhesion to hair during application” and “hair shampooed hair” Squeakiness, hair gloss, hair smoothness, hair firmness, hair softness, hair cohesion, hair dryness, hair stickiness, “Hair antistatic effect” and “emulsification stability” were evaluated in the same manner as in Example 1. The results are shown in Tables 11 and 12.

(Example 69: Emulsified composition for creamy hair)
40 parts by weight of liquid paraffin (manufactured by White Mineral Oil, Hangzhou Petrochemical Company Limited), 4 parts by weight of hydrogenated polyisobutene (PERMETHYL 102A, manufactured by Nippon Koken Co., Ltd.), olive oil (CROPUREOL-LQ- (JP), Croda Japan) Co., Ltd.) 2.5 parts by mass and stearic acid (NAA-176, manufactured by NOF Corporation) 2.5 parts by mass were mixed to obtain an oil phase.
3 parts by mass of alkyl (C12, 14) oxyhydroxypropyl arginine hydrochloride (Amisafe LMA-60, manufactured by Ajinomoto Co., Inc.) as an amphoteric surfactant was mixed with 48 parts by mass of ion-exchanged water to obtain an aqueous phase.
51 parts by mass of the aqueous phase and 49 parts by mass of the oil phase were put into a homomixer (HOMOMIXER MARKII Model 2.5, manufactured by Primix Co., Ltd.), stirred at 4,000 rpm for 5 minutes, and then the mixture was mixed with a high-pressure emulsifier ( LAB2000, manufactured by APV Gaulin) and subjected to a high-pressure emulsification treatment at a pressure of 50 MPa to obtain an emulsified composition for creamy hair of Example 69.

  The pH and volume average particle diameter of the obtained creamy hair emulsified composition of Example 69 were measured in the same manner as in Example 1. The “feeling of close contact with hair during application” and “hair after shampooing” Squeaky sensation, hair gloss, hair smoothness, hair firmness, hair softness, hair cohesion, hair dryness, hair stickiness The “antistatic effect of hair” and “emulsification stability” were evaluated in the same manner as in Example 1. The results are shown in Table 13.

(Example 70: Emulsified composition for creamy hair)
0.5 parts by mass of octodecyl myristate (ODM, manufactured by Shinei Chemical Co., Ltd.) and 3.5 parts by mass of cetanol (NAA-44, manufactured by NOF Corporation) were used as the oil phase.
80.7 parts by mass of ion-exchanged water, 1 part by mass of glyceryl stearate (Reodol MS-165, manufactured by Kao Corporation), and alkyl (C12,14) oxyhydroxypropylarginine hydrochloride (Amisafe LMA) as an amphoteric surfactant -60, manufactured by Ajinomoto Co., Inc.) and 4.8 parts by mass were mixed to obtain an aqueous phase.
86.5 parts by mass of the aqueous phase and 4 parts by mass of the oil phase were placed in a homomixer (HOMOMIXER MARKII Model 2.5, manufactured by Primix Co., Ltd.), stirred at 4,000 rpm for 5 minutes, and then the mixture was high-pressure emulsified. It put into the apparatus (LAB2000, the product made from APV Gaulin), the high pressure emulsification process was performed at the pressure of 50 Mpa, and the emulsion composition was obtained.
The obtained emulsified composition was heated to 80 ° C., and a mixture of 0.5 parts by mass of hydroxyethyl cellulose (HEC-SE400, manufactured by Daicel Finechem Co., Ltd.) in 5 parts by mass of ion-exchanged water, methylparaben (platinum- M, a product obtained by dissolving 0.3 parts by mass of Ueno Pharmaceutical Co., Ltd. in 3 parts by mass of butylene glycol (1.3-butylene glycol, manufactured by Daicel Corporation), and adding a homomixer (HOMOMIXER MARKII Model 2.5). , Manufactured by Primix Co., Ltd.) to prepare an emulsified composition for creamy hair of Example 70.

  The pH and volume average particle diameter of the obtained creamy hair emulsified composition of Example 70 were measured in the same manner as in Example 1, and “adhesion to hair during application”, “hair after shampooing” Squeaky sensation, hair gloss, hair smoothness, hair firmness, hair softness, hair cohesion, hair dryness, hair stickiness The “antistatic effect of hair” and “emulsification stability” were evaluated in the same manner as in Example 1. The results are shown in Table 13.

(Example 71: Emulsified composition for creamy hair)
2 parts by mass of dimethylpolysiloxane (SH200, manufactured by Toray Industries, Inc.) was used as the oil phase.
2-mass oil alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine (Amphithol 20Y-B, manufactured by Kao Corporation) as an amphoteric surfactant and hydrochloric acid (manufactured by Kanto Chemical Co., Ltd.) 0 0.1 part by mass was mixed with 86.7 parts by mass of ion-exchanged water to obtain an aqueous phase.
89.8 parts by mass of the aqueous phase and 2 parts by mass of the oil phase were put into a homomixer (HOMOMIXER MARKII Model 2.5, manufactured by Primix Co., Ltd.), stirred at 4,000 rpm for 5 minutes, and then the mixture was high-pressure emulsified. It put into the apparatus (LAB2000, the product made from APV Gaulin), the high pressure emulsification process was performed at the pressure of 50 Mpa, and the emulsion composition was obtained.
The obtained emulsified composition was heated to 80 ° C., 3.5 parts by mass of cetanol (NAA-44, manufactured by NOF Corporation), 1.2 parts by mass of stearyl alcohol (NAA-45, manufactured by NOF Corporation), A mixture obtained by dissolving 0.2 parts by mass of behenyl alcohol (behenyl alcohol 65, manufactured by Nikko Chemicals Co., Ltd.) at 80 ° C. and 0.3 part by mass of methylparaben (Platings-M, manufactured by Ueno Pharmaceutical Co., Ltd.) are glycerin (for cosmetics). A mixture obtained by dissolving 3 parts by mass of concentrated glycerin (manufactured by Sakamoto Yakuhin Kogyo Co., Ltd.) into a homomixer (HOMOMIXER MARKII Model 2.5, manufactured by Primix Co., Ltd.) and stirring at 4,000 rpm for 5 minutes Example 71 An emulsion composition for creamy hair was prepared.

  The pH and volume average particle size of the obtained creamy hair emulsified composition of Example 71 were measured in the same manner as in Example 1, and “adhesion to hair during application”, “hair after shampooing” Squeaky sensation, hair gloss, hair smoothness, hair firmness, hair softness, hair cohesion, hair dryness, hair stickiness The “antistatic effect of hair” and “emulsification stability” were evaluated in the same manner as in Example 1. The results are shown in Table 13.

(Example 72: Emulsified composition for creamy hair)
2 parts by mass of jojoba oil (manufactured by Wako Pure Chemical Industries, Ltd.) was used as the oil phase.
3 parts by mass of N-lauroyl-L-arginine (Amisafe AL-01, manufactured by Ajinomoto Co., Inc.) as an amphoteric surfactant and 88.5 parts by mass of ion-exchanged water were mixed to obtain an aqueous phase.
91.5 parts by mass of the aqueous phase and 2 parts by mass of the oil phase heated to 80 ° C. were placed in a homomixer (HOMOMIXER MARKII Model 2.5, manufactured by Primix Co., Ltd.) and stirred at 4,000 rpm for 5 minutes. The mixture was put into a high-pressure emulsifier (LAB2000, manufactured by APV Gaulin) and subjected to high-pressure emulsification at a pressure of 50 MPa to obtain an emulsified composition.
The obtained emulsified composition was heated to 80 ° C., and 3 parts by mass of sorbitol (sorbitol F, manufactured by Food Products Science Co., Ltd.) and butylene glycol (1.3-butylene glycol, manufactured by Daicel Chemical Industries, Ltd.) 2.5 Mixture with parts by mass, cetanol (trade name: NAA-44, manufactured by NOF Corporation) 4.2 parts by mass, stearyl alcohol (NAA-45, manufactured by NOF Corporation) 0.5 parts by mass, phenoxyethanol (2- A cream hair emulsified composition of Example 72 was prepared by mixing 0.25 parts by mass of Phenoxyethanol S (manufactured by Kobayashi Fragrance Co., Ltd.) with a homomixer (HOMOMIXER MARKII Model 2.5, manufactured by Primix Co., Ltd.).

  The pH and volume average particle diameter of the obtained creamy hair emulsified composition of Example 72 were measured in the same manner as in Example 1, and “adhesion to hair during application”, “hair after shampooing” Squeaky sensation, hair gloss, hair smoothness, hair firmness, hair softness, hair cohesion, hair dryness, hair stickiness The “antistatic effect of hair” and “emulsification stability” were evaluated in the same manner as in Example 1. The results are shown in Table 13.

(Example 73: Gel hair emulsified composition)
0.5 parts by mass of dimethylpolysiloxane (dimethicone; SH200, manufactured by Toray Industries, Inc.) was used as the oil phase.
0.37 parts by mass of alkyl (C12,14) oxyhydroxypropylarginine hydrochloride (Amisafe LMA-60) as an amphoteric surfactant was mixed with 74.7 parts by mass of ion-exchanged water to obtain an aqueous phase.
75 parts by mass of the aqueous phase and 0.5 parts by mass of the oil phase heated to 80 ° C. were put into a homomixer (HOMOMIXER MARKII Model 2.5, manufactured by Primix Co., Ltd.), and stirred at 4,000 rpm for 5 minutes. The mixture was put into a high-pressure emulsifier (LAB2000, manufactured by APV Gaulin) and subjected to high-pressure emulsification at a pressure of 50 MPa to obtain an emulsified composition.
In the obtained emulsified composition, 0.5 part by mass of carbomer (Carbopol 980, manufactured by Nikko Chemicals Co., Ltd.) is dispersed in 20 parts by mass of ion-exchanged water, and triethanolamine (triethanolamine care, manufactured by BASF Japan Co., Ltd.). ) 0.5 parts by mass of a neutralized mixture, butylene glycol (1,3-butylene glycol, manufactured by Daicel Corporation) 3 parts by mass, methylparaben (Platings-M, manufactured by Ueno Pharmaceutical Co., Ltd.) 0.3 parts by mass Was mixed with a homomixer (HOMOMIXER MARKII Model 2.5, manufactured by Primix Co., Ltd.) to prepare an emulsified composition for gel-like hair of Example 73.

  The pH and volume average particle diameter of the obtained gel-like hair emulsified composition of Example 73 were measured in the same manner as in Example 1, and “adhesion to hair during application”, “hair after shampooing” Squeaky sensation, hair gloss, hair smoothness, hair firmness, hair softness, hair cohesion, hair dryness, hair stickiness The “antistatic effect of hair” and “emulsification stability” were evaluated in the same manner as in Example 1. The results are shown in Table 13.

  The emulsified composition for hair obtained by the method for producing an emulsified composition for hair according to the present invention has the following properties: hair gloss, hair smoothness, effect of reducing hair squeakiness, hair firmness, hair softness, and hair Since the antistatic effect is excellent, for example, it is suitable for hair rinse, hair conditioner, hair treatment and the like.

1 Coarse particles before high-pressure homogenizer treatment 2 Fine particles after high-pressure homogenizer treatment 3 Sheet 4 Valve 5 Impact ring

Claims (6)

(A) an oil phase containing an oil component;
(B) A method for producing an emulsified composition for hair, comprising a high-pressure emulsification step of emulsifying an amino acid-based amphoteric surfactant and an aqueous phase containing water with a high-pressure emulsifier at a pressure of 30 MPa to 120 MPa. . The method for producing an emulsified composition for hair according to claim 1, wherein the amino acid-based amphoteric surfactant is an alkylamino fatty acid, or a derivative or salt thereof. The amino acid amphoteric surfactant is any one of N- [3-alkyl (12,14) oxy-2-hydroxypropyl] -L-arginine hydrochloride and N-lauroyl-L-arginine. 3. A method for producing an emulsified composition for hair according to any one of items 1 to 2. The method for producing an emulsified composition for hair according to any one of claims 1 to 3, wherein the content of the amino acid-based amphoteric surfactant is 1% by mass or more and 10% by mass or less. The method for producing an emulsified composition for hair according to any one of claims 1 to 4, wherein the oil content is 2.5% by mass or more and 40% by mass or less. 2. The mass ratio (oil content / amino acid amphoteric surfactant) of the oil content (mass%) and the amino acid amphoteric surfactant content (mass%) is 1 or more and 5 or less. To 5. The method for producing an emulsified composition for hair according to any one of 5 to 5.