JP2015010087A - Hair cosmetic and hair cosmetic article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hair cosmetic having rheological property which can maintain equal dischargeability of a first agent and a second agent by a dual structure container with time.SOLUTION: A first agent and a second agent of a hair cosmetic each independently fill a dual structure container having a specific discharging mechanism, and are discharged separately from each other by a propellants for pressurization. The viscosity ratio V/Vof viscosity Vin 30 rpm using a type B rotational viscometer to a viscosity Vin 12 rpm is each 0.5 or more. The value of the viscosity ratio V/V(f) in the first agent and the viscosity ratio V/V(s) in the second agent are within the range which does not exceed 1.3 times each other.

Description

  The present invention relates to a hair cosmetic and a hair cosmetic product, and more particularly, particularly suitable for a dual-structure container having a specific mechanism for filling and discharging the first and second agents of the hair cosmetic. A hair cosmetic containing a first agent and a second agent, and the hair cosmetic and the double structure container are configured, and the double agent container is filled with the first and second agents of the hair cosmetic. The present invention relates to a hair cosmetic product.

  Conventionally, a double-structured container (hereinafter referred to as “separate filling / same pressure discharge”) having a mechanism in which the first agent and the second agent of hair cosmetics are separately filled and simultaneously discharged by the same pressure discharge system. Called "molded double-structured containers"). As a double container of the separate filling / same pressure discharge type, for example, the following mechanism can be exemplified.

  That is, the opening of the outer container (propellant filling space) filled with a propellant that is a compressed gas for pressurization or a liquefied gas is hermetically closed by a lid having a discharge path and a valve that opens and closes the discharge path. . Also, inside the outer container, there are two bag-like bodies (first agent filling space and second agent filling space) that are filled with the first and second agents of hair cosmetics, respectively. The openings of these bag-like bodies are in fluid-tight communication with the discharge path of the lid. Therefore, the first agent and the second agent filled in the bag-like body are always subjected to the discharge pressure by the same propellant, and the simultaneous discharge of the first agent and the second agent can be controlled by a simple opening / closing operation of the discharge passage valve. It is like that.

  For example, the following Patent Document 1 and Patent Document 2 basically disclose a double structure container having such a mechanism.

JP 2012-229318 A JP 2013-043659 A JP 2010-235578 A JP 2007-314442 A

  By the way, the above-mentioned double-filled container of the separate filling / same pressure discharge type is usually designed to simultaneously discharge the same amount of the first agent and the second agent filled in the bag-like body. The 1st agent and the 2nd agent are also mixed after ejecting an equal amount at a mass ratio of 1: 1 and applied to the hair.

  However, the double-filled container of the separate filling / same pressure discharge type is a mechanism that discharges the first agent and the second agent at the same time by the discharge pressure of the same propellant. If the agent is a creamy formulation with a relatively high viscosity, the rheological properties of each of the first agent and the second agent (ejection due to flow during pressurization) are not properly adjusted. Equal amount discharge of the first agent and the second agent cannot be realized. When the equivalent amount ejection property is impaired to some extent, it affects the commercial value of the hair cosmetic product in which the first agent and the second agent are filled in the double structure container.

  Further, when the hair cosmetic is a hair dye such as a two-part oxidative hair dye or a hair bleaching agent, at least an alkali agent (and further an oxidative dye) is blended in the first agent, and the second agent Is mixed with an oxidizing agent. Under such compositional constraints, what category of rheological properties should be focused on for equal volume ejection, and what kind of composition design should be realized for the first agent and second agent? It is not easy to identify.

  In the above Patent Documents 3 and 4, the realization of the rheological properties of the cosmetic composition is the subject of the invention. However, Patent Document 3 describes a two-component hair dye that is discharged in a foam form from an aerosol foamer container from the viewpoint of permeability after application to hair, prevention of dripping from hair, and the like. It is disclosed to adjust the dynamic viscoelasticity. Further, Patent Document 4 considers the elongation to the skin at the time of application of the skin cosmetic and the like, and the cosmetic has certain rheological characteristics by adjusting the average emulsified particle diameter in the oil-in-water emulsion cosmetic. To disclose. Therefore, in Patent Documents 3 and 4, neither the point of the rheological characteristics category nor the composition design of the first agent and the second agent for that purpose is completely helpful in realizing the above-mentioned equal discharge.

  Therefore, the present invention has the rheological characteristics that can discharge the same amount of the first agent and the second agent by the double structure container of separate filling and the same pressure discharge type, and can maintain the same amount discharge property over time. Providing hair cosmetics is a problem to be solved.

(Configuration of the first invention)
The composition of the first invention of the present application is a hair cosmetic comprising a first agent and a second agent,
The first agent and the second agent are provided with a first agent filling space and a second agent filling space independently in a propellant filling space filled with a propellant for pressurization, and filling each of these agents. For use in a double-structured container equipped with a mechanism that separates and simultaneously discharges the first agent and the second agent filling the space for use with the propellant,
The first agent and the second agent are both ejected in a cream form. Under conditions of 25 ° C., the viscosity V _{30 at 30} rpm and the viscosity V _{12 at 12} rpm using a B-type rotational viscometer. Viscosity ratio V ₃₀ / V ₁₂ are both 0.5 or more,
Hair makeup in which the values of the viscosity ratio V ₃₀ / V ₁₂ (f) in the first agent and the viscosity ratio V ₃₀ / V ₁₂ (s) in the second agent do not exceed 1.3 times each other It is a fee.

(Configuration of the second invention)
The composition of the second invention of the present application is the hair cosmetic composition according to the first invention, wherein the first agent contains one or more nonionic surfactants within a total range of 1 to 10% by mass. It is.

(Configuration of the third invention)
The structure of the third invention of the present application is the hair cosmetic composition according to the first invention or the second invention, wherein the first agent further contains at least 1% by mass of at least one oil component.

(Configuration of the fourth invention)
The composition of the fourth invention of the present application is the hair cosmetic composition according to the second or third invention, wherein the first agent further contains one or more higher alcohols, and the total of the nonionic surfactants in the first agent A hair cosmetic composition in which the ratio C (n) / C (a) in mass% of the content C (n) and the total content C (a) of the higher alcohol is in the range of 0.3 to 1.0. is there.

(Structure of the fifth invention)
The structure of the fifth invention of the present application is the hair cosmetic composition according to any one of the second to fourth inventions, wherein the first agent further contains one or more ionic surfactants, and the ionicity in the first agent. The ratio C (i) / C (n) in mass% of the total surfactant content C (i) and the nonionic surfactant content C (n) is 1.5 or less. Cosmetics.

(Structure of the sixth invention)
The structure of the sixth invention of the present application is the hair cosmetic composition according to any one of the first to fifth inventions,
A first agent filling space and a second agent filling space are independently provided in a propellant filling space filled with a propellant for pressurization, and a first agent filling each of the filling spaces for these agents, and A double-structured container having a mechanism for separating and simultaneously discharging the second agent by the propellant, and a hair cosmetic product comprising:
It is a hair cosmetic product in which the first agent and the second agent of the hair cosmetic are filled in the first agent filling space and the second agent filling space in the double structure container, respectively.

(Effect of the first invention)
In the process of pursuing the means for solving the problems of the present invention, the inventor of the present application can discharge the same amount of the first agent and the second agent in the double structure container of the separate filling and the same pressure discharge type, In order to realize the rheological characteristics capable of maintaining the same amount of discharge property, attention was paid to the three factors of yield value, strain γ, and relaxation time λ (0) for the first and second agents as fluids. The yield value is a fluidity factor of the fluid, and if this value is small, it becomes difficult to control the discharge of the same amount. When the value of the strain γ is small, it contributes to the improvement of the equal amount discharge property with time. If the relaxation time λ (0) is short, it is easy to return to the original fluid structure after the stress relaxation, which contributes to an improvement in the equivalent discharge performance.

  For the three factors of yield value, strain γ, and relaxation time λ (0), a titanium parallel plate viscoelasticity measuring machine Rheostress RS600 (HAAKE) was used, measuring temperature 25 ° C., measuring gap: 0.052 mm. In the measurement mode: Measured by CS flow curve (stress 0.01 to 300 Pa, 300 s), creep (0.5 Pa, 60 s) / recovery (0 Pa, 60 s).

As a specific evaluation index of rheological characteristics that comprehensively satisfies these factors, the viscosity V _{30 at 30} rpm using a B-type rotational viscometer for the first agent and the second agent, and the viscosity at 12 rpm the viscosity ratio V _{30 /} V ₁₂ and V ₁₂ has been found to be a suitable indicator. That is, the viscosity ratio V ₃₀ / V ₁₂ (f) in the first agent and the viscosity ratio V ₃₀ / V ₁₂ (s) in the second agent are equal to or greater than a certain value, and the viscosity ratio of both of them is It has been found that, when the numerical values are within a relatively constant approximate numerical range, it is possible to achieve the same amount discharge of the first agent and the second agent by the double structure container of the separate filling and the same pressure discharge type.

According to the first invention, the creamy first and second agents to be filled each double structure container, and the viscosity ratio of the first agent _{V 30 / V 12 (f)} , the viscosity of the second agent The ratio V ₃₀ / V ₁₂ (s) is 0.5 or more, and the viscosity ratio value of both is within a range not exceeding 1.3 times each other. Equal volume discharge of the 1st agent and the 2nd agent by the double structure container of a type is realizable.

  In the present invention, “equivalent discharge” means that the discharge amount of the first agent and the second agent respectively filled in the double-structure container is an error within 25% by mass in comparison of parts by mass, More preferably, the error is within 20% by mass.

(Effect of the second invention)
Products made by filling a double-structured container with the first agent and the second agent are stored and distributed from the time of manufacture to the time of sale, while the user discharges the first agent and the second agent little by little. Considering the period of use to be used, it is required to maintain the same amount of discharge over time. That is, it is required to maintain the rheological characteristics defined in the first invention for the first agent and the second agent over time.

  In the process of pursuing means for responding to such demands, the present inventor has first found that maintenance of rheological characteristics over time is a problem particularly in the first agent. The reason is considered to be related to the point that the first agent contains a salt such as an oxidative dye when the hair cosmetic is an oxidative hair dye. When the first agent contains a nonionic surfactant within a certain quantitative range, the emulsion stability of the creamy first agent is improved, and therefore the rheological properties can be easily maintained over time. I found.

  That is, according to the second invention, since the first agent of the hair cosmetic contains one or more nonionic surfactants within a total range of 1 to 10% by mass, the emulsion stability of the first agent is improved. It is easy to maintain the rheological characteristics over time, and to maintain the same amount of the first agent and the second agent over time.

  The nonionic surfactant is stable over time in the first agent. Moreover, when a nonionic surfactant is mix | blended with a 1st agent, it is effective for the emulsification stability of a creamy 1st agent especially when hair cosmetics are hair dyes.

(Effect of the third invention)
According to the third invention, since the first agent of the hair cosmetic further contains one or more of the oily components in a total amount of 1% by mass or more, the hair coloring power when the hair cosmetic is a hair dye is ensured satisfactorily. can do. This effect is particularly preferably ensured when the oil component is a hydrocarbon or an ester.

(Effect of the fourth invention)
Regarding the maintenance of the rheological properties in the first agent over time as described for the second invention, the total content C (n) of the nonionic surfactant and the total content C (a) of the higher alcohol in the first agent It was found that it is particularly preferable that the ratio C (n) / C (a) is within a certain range.

  According to the fourth invention, the first agent further contains one or more higher alcohols, and the ratio C (n) / C (a) in mass% is within the range of 0.3 to 1.0. As a result, the rheological properties of the first agent are maintained over time, and as a result, the same amount ejection properties of the first agent and the second agent over time are maintained.

(Effect of the fifth invention)
According to the fifth invention, the first agent of the hair cosmetic further contains one or more ionic surfactants, and the total content C (i) of the ionic surfactants in the first agent and nonionic properties Since the ratio C (i) / C (n) in units of mass% of the total surfactant content C (n) is 1.5 or less, the rheological characteristics of the first agent are particularly excellent over time.

(Effect of the sixth invention)
According to the sixth invention, the first agent and the second agent of the hair cosmetic according to any one of the first to fifth inventions are filled in the first agent in a double structure container of the same filling and discharging type. Hair cosmetic products filled in the space for use and the space for filling the second agent are provided. In this hair cosmetic product, it is possible to discharge an equal amount of the first agent and the second agent using a double structure container, and it is possible to maintain an equal amount discharge property over time.

It is a front view which shows the outline | summary of an example of the double structure container used by this invention.

DESCRIPTION OF SYMBOLS 1 Double structure container 2 Outer container 3, 4 Bag-like body 5 Propellant filling space 6 Opening part 7 Lid body 8, 9 Cylindrical stem 10 Actuator 11 Opening part 12, 13 Discharge hole

  Next, embodiments of the present invention will be described including the best mode.

[Hair cosmetics]
First, an embodiment of the hair cosmetic of the present invention will be described focusing on the first agent and the second agent. The main components of the first agent and the second agent described in these embodiments will be described in detail later.

  The hair cosmetic composition of the present invention comprises at least a first agent and a second agent. The first agent and the second agent are filled in the first agent filling space and the second agent filling space, which are, for example, bag-like bodies in the separate filling / same pressure discharge type dual structure container described later. Is done. The first agent and the second agent of the hair cosmetic are both emulsified cream-like dosage forms, which are discharged as a similar cream-like form from the double structure container.

  Examples of hair cosmetics include such a two-part formulation consisting of a first agent and a second agent, but also a multi-component type such as a three-component formula to which a third agent or the like according to an appropriate formulation is added. Is included. The dosage form such as the third agent to be added is not particularly limited. When the hair cosmetic is a three-component type, the third agent is usually attached to a double structure container filled with the first agent and the second agent, and is a component of a hair cosmetic product as a product. It becomes.

  Although the category of hair cosmetics is not limited as long as it includes at least the first agent and the second agent, preferably, an oxidative hair dye, a hair bleaching agent, and a hair decoloring agent are exemplified. These are common in that they contain a first agent containing an alkaline agent and a second agent containing an oxidizing agent, but the oxidation hair dye further contains an oxidation dye. Oxidative dyes consist of major intermediates, or major intermediates and couplers, but in some cases further direct dyes are added. In the hair decoloring agent, persulfate is added as an oxidizing aid in addition to the alkaline agent.

In the hair cosmetic composition of the present invention, the first agent and the second agent have a viscosity ratio V ₃₀ / V ₁₂ of a viscosity V _{30 at 30} rpm and a viscosity V _{12 at 12} rpm using a B-type rotational viscometer at 25 ° C. However, all are 0.5 or more, More preferably, it is 0.55 or more. Furthermore, in the hair cosmetic composition of the present invention, the values of the viscosity ratio V ₃₀ / V ₁₂ (f) in the first agent and the viscosity ratio V ₃₀ / V ₁₂ (s) in the second agent are 1.3 times each other. Within a range not exceeding, more preferably within a range not exceeding 1.2 times each other.

The viscosity V _{30 at 30} rpm and the viscosity V _{12 at 12} rpm are so-called B-type rotational viscometers, using a No. 4 rotor at 25 ° C., measured viscosity V ₃₀ (mPa · s) and 12 rpm at 25 rpm. This is the value obtained as the measured viscosity V ₁₂ (mPa · s).

  The 1st agent of hair cosmetics can contain 1 or more types of nonionic surfactant in the range of the total content of preferably 1-10 mass%, More preferably, 2-8 mass%. . You may mix | blend 1 or more types of a nonionic surfactant suitably also in the 2nd agent of hair cosmetics.

  The 1st agent of hair cosmetics can further contain 1 or more types of oily components of the total content of preferably 1 mass% or more, more preferably 2 mass% or more. You may mix | blend suitably 1 or more types of an oil-based component also to the 2nd agent of hair cosmetics.

  The first agent for hair cosmetics can further preferably contain one or more higher alcohols. In the present specification, “higher alcohol” refers to a saturated or unsaturated, linear or branched monovalent alcohol having 12 or more carbon atoms. You may mix | blend 1 or more types of a higher alcohol with the 2nd agent of hair cosmetics suitably.

  In the first agent for hair cosmetics, the ratio in mass% of the total content C (n) of one or more nonionic surfactants and the total content C (a) of one or more higher alcohols C (n) / C (a) is not limited, but is preferably in the range of 0.3 to 1.0, more preferably in the range of 0.35 to 0.9.

  In addition, the first agent for hair cosmetics can further preferably contain one or more ionic surfactants. Examples of the ionic surfactant include a cationic surfactant, an anionic surfactant, and an amphoteric surfactant.

  When one or more ionic surfactants having a total content of 0.2 to 1% by mass are contained in the first agent of the hair cosmetic, the emulsification stability in the first agent is improved and the rheological properties are changed over time. It is preferable in terms of maintenance. Furthermore, the ratio C (i) in units of mass% between the total content C (i) of one or more ionic surfactants and the total content C (n) of one or more nonionic surfactants. Although / C (n) is not limited, it is preferably 1.5 or less, more preferably 1.0 or less.

[Main ingredients of hair cosmetics]
Next, embodiments of essential components and main optional compounding components contained in the hair cosmetic composition of the present invention will be described in detail sequentially.

(Alkaline agent)
When the hair cosmetic is an oxidative hair dye, a hair bleaching agent or a hair decoloring agent, the alkaline agent contained in the first agent is ammonia, alkanolamine, silicate, carbonate, bicarbonate, Examples include metasilicates, sulfates, chlorides, phosphates, basic amino acids and the like. Specifically, examples of the alkanolamine include monoethanolamine and triethanolamine, examples of the silicate include sodium silicate and potassium silicate, examples of the carbonate include sodium carbonate and ammonium carbonate, Examples of the bicarbonate include sodium bicarbonate and ammonium bicarbonate, examples of the metasilicate include sodium metasilicate and potassium metasilicate, examples of the sulfate include ammonium sulfate, and examples of the chloride include ammonium chloride. Examples of the phosphate include primary ammonium phosphate and secondary ammonium phosphate, and examples of the basic amino acid include arginine, lysine and salts thereof. Among these, ammonia, carbonate and ammonium salt are preferable.

  Although content of the alkaline agent in a 1st agent is not limited, For example, it is 0.1-15 mass%, More preferably, it is 1-12 mass%.

(Oxidizing agent, oxidation aid)
When the hair cosmetic is an oxidative hair dye, a hair bleach or a hair decolorant, the oxidant contained in the second agent includes hydrogen peroxide, urea peroxide, melamine peroxide, sodium percarbonate. , Potassium percarbonate, sodium perborate, potassium perborate, ammonium persulfate, sodium peroxide, potassium peroxide, magnesium peroxide, barium peroxide, calcium peroxide, strontium peroxide, sulfate hydrogen peroxide adduct And hydrogen peroxide adduct of phosphate, hydrogen peroxide adduct of pyrophosphate and the like. Among these, hydrogen peroxide is preferable.

  Although content of the oxidizing agent in a 2nd agent is not specifically limited, For example, it is 0.1-15 mass%, More preferably, it is 1-10 mass%. When the second agent contains hydrogen peroxide as an oxidizing agent, ethylene glycol phenyl ether (phenoxyethanol), hydroxyethanediphosphonic acid or a salt thereof is added to the acidic agent as a stabilizer for improving the stability. It is preferable.

  On the other hand, when the hair cosmetic is a hair decoloring agent, examples of the oxidation aid to be blended include persulfates such as ammonium persulfate, potassium persulfate, and sodium persulfate.

(Oxidation dye, direct dye)
When the hair cosmetic is an oxidative hair dye, among the oxidative dyes contained in the first agent, the main intermediate is a dye precursor that is mainly o- or p-phenylenediamines or aminophenols. Yes, usually itself a colorless or weakly colored compound. The main intermediate is used alone or with a coupler.

  Major intermediates include p-phenylenediamine, toluene-2,5-diamine (p-toluylenediamine), N-phenyl-p-phenylenediamine, 4,4′-diaminodiphenylamine, p-aminophenol, o- Aminophenol, p-methylaminophenol, N, N-bis (2-hydroxyethyl) -p-phenylenediamine, 2-hydroxyethyl-p-phenylenediamine, o-chloro-p-phenylenediamine, 4-amino-m -Cresol, 2-amino-4-hydroxyethylaminoanisole, 2,4-diaminophenol and salts thereof are exemplified. Examples of the salt include hydrochloride, sulfate, acetate and the like.

  The coupler mainly includes m-diamines, aminophenols or diphenols, specifically, resorcin, catechol, pyrogallol, phloroglucin, gallic acid, hydroquinone, 5-amino-o-cresol, m-amino. Phenol, 5- (2-hydroxyethylamino) -2-methylphenol, m-phenylenediamine, 2,4-diaminophenoxyethanol, toluene-3,4-diamine, α-naphthol, 2,6-diaminopyridine, diphenylamine, 3,3′-iminodiphenyl, 1,5-dihydroxynaphthalene and tannic acid and their salts are exemplified.

  Examples of the direct dye that may be additionally used for adjusting the hair color tone include various acid dyes, basic dyes, nitro dyes, natural dyes, disperse dyes, and HC dyes.

(Surfactant)
In the first agent of the hair cosmetic, one or more nonionic surfactants can be blended as preferable optional components within the above-described total content range. Moreover, the 1st agent of hair cosmetics can also mix | blend 1 or more types of the ionic surfactant which is any of cationic, anionic, and zwitterionic as a preferable arbitrary component.

  Although the total compounding quantity of 1 or more types of the ionic surfactant in a 1st agent is not specifically limited, For example, it can be in the range of 0.1-3 mass% in a 1st agent. However, the ionic surfactant in the first agent is preferably used in combination with one or more of the nonionic surfactants in the first agent. In the case of such combined use, the ratio C (i) / C (%) of the total content C (i) of the ionic surfactant and the total content C (n) of the nonionic surfactant. It is preferable to set the total content of the ionic surfactant so that n) becomes the above-mentioned value.

  In the second agent for hair cosmetics, one or more nonionic surfactants and / or one or more ionic surfactants may be blended in an appropriate quantitative range.

  Examples of nonionic surfactants include ether type and ester type.

  Specific examples of ether-type nonionic surfactants include POE cetyl ether (ceteth), POE stearyl ether (steares), POE behenyl ether, POE oleyl ether (oreth), POE lauryl ether (laureth), and POE octyl. Examples include dodecyl ether, POE hexyl decyl ether, POE isostearyl ether, POE nonyl phenyl ether, and POE octyl phenyl ether.

  Specific examples of the ester-type nonionic surfactant include POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan monopalmitate, POE sorbitan monolaurate, POE sorbitan trioleate, POE glycerin monostearate , Monomyristic acid POE glycerin, tetraoleic acid POE sorbite, hexastearic acid POE sorbit, monolauric acid POE sorbit, POE sorbit beeswax, monooleic acid polyethylene glycol, monostearic acid polyethylene glycol, monolauric acid polyethylene glycol, lipophilic monoolein Glyceryl acid, lipophilic glyceryl monostearate, self-emulsifying glyceryl monostearate, sorbitan monooleate, sesqui Sorbitan oleate, sorbitan trioleate, sorbitan monostearate, sorbitan monopalmitate, sorbitan monolaurate, sucrose fatty acid ester, decaglyceryl monolaurate, decaglyceryl monostearate, decaglyceryl monooleate, and decaglyceryl monomyristate An example is glyceryl.

  Cationic surfactants include lauryltrimethylammonium chloride, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride (stealtrimonium chloride), behenyltrimethylammonium chloride (behentrimonium chloride), distearyldimethylammonium chloride, cetyltrimethylammonium bromide And stearyltrimethylammonium bromide, ethyl lanolin sulfate fatty acid aminopropylethyldimethylammonium, stearyltrimethylammonium saccharin, cetyltrimethylammonium saccharin, methacryloyloxyethyltrimethylammonium chloride, and behenyltrimethylammonium methylsulfate.

Anionic surfactants include alkyl ether sulfates, polyoxyethylene (hereinafter referred to as POE) alkyl ether sulfates, alkyl sulfates, alkenyl ether sulfates, alkenyl sulfates, olefin sulfonates, alkane sulfonates. Examples include salts, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, α-sulfone fatty acid salts, N-acyl amino acid type surfactants, phosphate mono- or diester type surfactants, and sulfosuccinates. . The counter ion of the anionic group of these surfactants may be any of sodium ion, potassium ion, and triethanolamine, for example.

  More specifically, as an anionic surfactant, sodium lauryl sulfate, sodium myristyl sulfate, potassium lauryl sulfate, ammonium lauryl sulfate, triethanolamine lauryl sulfate, sodium cetyl sulfate, sodium stearyl sulfate, polyoxyethylene (POE) lauryl ether Sodium sulfate, POE lauryl ether sulfate triethanolamine, POE lauryl ether ammonium sulfate, POE stearyl ether sodium sulfate, stearoylmethyl taurate sodium, dodecylbenzenesulfonic acid triethanolamine, sodium tetradecenesulfonate, sodium lauryl phosphate, POE lauryl ether phosphorus Acids and salts thereof, N-lauroyl glutamates (such as sodium lauroyl glutamate) N- lauroyl methyl -β- alanine salts, N- acyl glycine salt, N- acyl glutamates, lauric acid, a higher fatty acid, myristic acid and salts of these higher fatty acids are exemplified.

  Examples of zwitterionic surfactants include alkyl betaine type, fatty acid amidopropyl betaine type, alkyl imidazole type, and amino acid type.

  More specific examples of zwitterionic surfactants include lauryl betaine, imidazoline, amide betaine, carbobetaine, sulfobetaine, hydroxysulfobetaine, amidosulfobetaine, 2-undecyl-N-carboxymethyl-N-hydroxyethylimidazo. Examples include linium betaine sodium, cocoamidopropyl betaine, lauryldimethylaminoacetic acid betaine, stearyldimethylaminoacetic acid betaine, coconut oil fatty acid amidopropyl betaine and the like.

(Oil component)
In the first agent of the hair cosmetic, one or more oily components can be blended as preferable optional components within the above-described total content range. You may mix | blend an oil-based component in the 2nd agent of hair cosmetics in a suitable quantitative range.

  Examples of the oil component include fats and oils, waxes, higher fatty acids, alkyl glyceryl ethers, esters, silicones, hydrocarbons and the like.

  Oils include olive oil, rosehip oil, camellia oil, shea fat, macadamia nut oil, almond oil, tea seed oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, beef fat, cacao butter, corn oil, peanut oil Rapeseed oil, rice bran oil, rice germ oil, wheat germ oil, pearl barley oil, grape seed oil, avocado oil, carrot oil, macadamia nut oil, castor oil, flaxseed oil, coconut oil, mink oil, egg yolk oil, etc. The

  Examples of waxes include beeswax, candelilla wax, carnauba wax, jojoba oil, lanolin, whale wax, rice bran wax, sugarcane wax, palm wax, montan wax, cotton wax, bayberry wax, shellac wax and the like.

  Examples of higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, hydroxystearic acid, 12-hydroxystearic acid, oleic acid, undecylenic acid, linoleic acid, ricinoleic acid, and lanolin fatty acid. Is done.

  Examples of the alkyl glyceryl ether include batyl alcohol (monostearyl glyceryl ether), chimyl alcohol (monocetyl glyceryl ether), ceralkyl alcohol (monooleyl glyceryl ether), isostearyl glyceryl ether and the like.

  Esters include diisobutyl adipate, cetyl octanoate, isononyl isononanoate, diisopropyl sebacate, octyldodecyl myristate, isopropyl palmitate, stearyl stearate, hexyl laurate, hexyldecyl dimethyloctanoate, triisodecyl myristate, fatty acid ( C10-30) (cholesteryl / lanosteryl), lauryl lactate, lanolin acetate, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid ester, N-alkyl glycol monoisostearate, diisostearyl malate, etc. .

  Examples of silicones include dimethylpolysiloxane (INCI name: dimethicone), dimethylpolysiloxane having hydroxy end groups (INCI name: dimethiconol), methylphenylpolysiloxane, decamethylcyclopentasiloxane, polyether-modified silicone, average polymerization degree Examples include 650-10000 highly polymerized silicone, amino-modified silicone, betaine-modified silicone, alkyl-modified silicone, alkoxy-modified silicone, and carboxy-modified silicone.

  Among the above, amino-modified silicones include aminopropylmethylsiloxane / dimethylsiloxane copolymer (INCI name: aminopropyl dimethicone), aminoethylaminopropylsiloxane / dimethylsiloxane copolymer (INCI name: amodimethicone), aminoethyl. Examples thereof include aminopropylmethylsiloxane / dimethylsiloxane copolymer (INCI name: trimethylsilylamodimethicone).

  Examples of the hydrocarbon include α-olefin oligomer, light isoparaffin, light liquid isoparaffin, liquid isoparaffin, liquid paraffin, squalane, polybutene, paraffin, microcrystalline wax, petrolatum and the like.

(Higher alcohol)
One or more kinds of higher alcohols can be blended in the first agent of the hair cosmetic as a preferred optional component. Although the total compounding quantity of the higher alcohol in a 1st agent is not specifically limited, For example, it can be in the range of 0.5-10 mass% in a 1st agent. However, it is preferable to combine one or more higher alcohols in the first agent in combination with one or more nonionic surfactants, particularly when the first agent is incorporated in the first agent. In the case of such combined use, the ratio C (n) / C in mass% of the total content C (n) of the nonionic surfactant in the first agent and the total content C (a) of the higher alcohol. It is preferable to set the total content of the higher alcohol so that (a) has the value described above.

  You may mix | blend 1 or more types of a higher alcohol in a suitable quantitative range also to the 2nd agent of hair cosmetics.

  Specifically, examples of the linear saturated higher alcohol include lauryl alcohol, myristyl alcohol, cetyl alcohol (cetanol), stearyl alcohol, aralkyl alcohol, and behenyl alcohol. In addition, examples of the branched saturated higher alcohol include isostearyl alcohol, 2-hexyldodecanol, and 2-octyldodecanol, and examples of the unsaturated higher alcohol include oleyl alcohol.

  Among these, particularly preferred are linear saturated higher alcohol lauryl alcohol, myristyl alcohol, cetyl alcohol (cetanol), stearyl alcohol, aralkyl alcohol, and behenyl alcohol having a carbon number of 12 to 22.

[Other optional ingredients for hair cosmetics]
In addition to the various components described above, the first agent and / or the second agent of hair cosmetics include, for example, cationic polymers, solubilizers, water-soluble polymer compounds, sugars, preservatives, stabilizers, and pH adjustments. Agents, plant extracts, herbal extracts, vitamins, fragrances, antioxidants, ultraviolet absorbers, chelating agents, and the like can be arbitrarily added. Some of them are specifically described below.

(Cationic polymer)
Examples of the cationic polymer include cationized cellulose derivatives, diallyl quaternary ammonium salt polymers or copolymers, quaternized polyvinylpyrrolidone, cationic starch, and cationized guar gum.

  As the cationized cellulose derivative, a polymer of a quaternary ammonium salt obtained by adding glycidyltrimethylammonium chloride to hydroxyethylcellulose (Polyquaternium-10, such as Leogard G, GP; Lion Corporation, Polymer JR-125, JR- 400, same JR-30M, same LR-400, same LR-30M; Amerchol), hydroxyethyl cellulose / dimethyldiallylammonium chloride copolymer (polyquaternium-4, eg Cellcoat H-100, same L-200; National Starch and Chemical Corporation).

  Examples of the polymer or copolymer of diallyl quaternary ammonium salt include dimethyldiallylammonium chloride polymer (polydimethylmethylenepiperidinium chloride) [POLYQUATERNIUM-6], for example, Merquat 100 (MERQUAT 100); Lubrizol ), Dimethyldiallylammonium chloride / acrylic acid copolymer [POLYQUATERNIUM-22, such as MERQUAT 280; Lubrizol Corporation], acrylic acid / diallyl quaternary ammonium salt / acrylamide copolymer [POLYQUATERNIUM-39], for example, MERQUAT PLUS 3331 (Lubrisol), etc.

  The quaternized polyvinylpyrrolidone includes a quaternary ammonium salt obtained from a copolymer of vinylpyrrolidone (VP) and dimethylaminoethyl methacrylate and diethyl sulfate [POLYQUATERNIUM-11], for example, GAFQUAT 734 , 755; IS Japan Co., Ltd.].

(Solubilizer)
A solubilizer is mix | blended in order to make each agent of hair cosmetics composition liquid. Examples of solubilizers include water and organic solvents. Examples of the organic solvent include C1-C3 monohydric alcohol (lower alcohol), glycols and glycerols as polyhydric alcohol, and diethylene glycol lower alkyl ether. Examples of the monohydric alcohol having 1 to 3 carbon atoms include methanol, ethanol, propanol, and isopropanol. Examples of glycols include ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, isoprene glycol, hexylene glycol, and 1,3-butylene glycol. Examples of glycerins include glycerin, diglycerin, and polyglycerin. Examples of the diethylene glycol lower alkyl ether include diethylene glycol monoethyl ether (ethyl carbitol).

(Water-soluble polymer compound)
As the water-soluble polymer compound, anionic, nonionic and amphoteric polymer compounds excluding the above-mentioned cationic polymer can be used. Examples thereof include carboxyvinyl polymer, diallyl quaternary ammonium salt / acrylic acid copolymer, and the like.

[Double structure container, hair cosmetics]
(Double structure container)
Next, an example of the double structure container used in the present invention will be described with reference to FIG. In this description, functionally simple description will be given for portions not directly related to the gist of the present invention, and detailed description of the structure will be omitted.

  The outer container 2 of the double-structured container 1 is a pressure-resistant container made of a hard and strong material having a shape that can stand by itself as it is or in an inverted state with a cap (not shown) that covers a lid that will be described later as the bottom. is there. The outer container 2 may be formed using an opaque metal material such as stainless steel. Preferably, the outer container 2 is a plastic material that is hard, strong and transparent, and has a necessary thickness so that the inside can be seen through. Formed by.

  Inside the outer container 2, a first pouch-shaped bag 3 constituting the first agent filling space and a second pouch-like bag 4 constituting the second agent filling space are provided. Are provided independently. In FIG. 1, on the assumption that the outer container 2 is formed of a transparent plastic material, the inside pouch-like bags 3 and 4 are shown in a state seen through from the outside.

  Unlike the constituent material of the outer container 2, the bag-like bodies 3 and 4 are made of a relatively thin and flexible plastic material that is relatively flexible and easily deformed by pressure. The bag-like bodies 3 and 4 may be a bag-like body having a laminated structure in consideration of damage resistance. In particular, the first bag-like body 3 for filling the first agent containing the alkali agent is not limited, but preferably has a laminate structure including a metal layer. On the other hand, the second bag-like body 4 is not limited, but is preferably transparent or semi-transparent so that the reduction of the contents of the bag-like body can be visually recognized.

The space excluding the installation space for the bag-like bodies 3 and 4 inside the outer container 2 is a propellant filling space 5, and this space is filled with propellant. As the propellant, a compressed gas using inert and low-toxic nitrogen gas (N ₂ ), carbon dioxide gas (CO ₂ ) or the like, LPG which is a liquefied gas, or the like is preferable.

  The opening 6 at the upper end of the outer container 2 is hermetically closed by a lid 7. Although not shown, a lid for the first agent and the second agent and a valve for opening and closing each of these discharge passages are provided inside the lid body 7. The discharge paths for the first agent and the second agent are liquid-tightly connected to the openings at the upper ends of the bag-like bodies 3 and 4, respectively.

  In addition, the bag-like bodies 3 and 4 are rod-like bodies having a ladder-like structure as a whole (not shown; for example, Patent Document 1) for facilitating smooth discharge of the first agent and the second agent filled therein. The dip tubes 16A and 16B shown in FIG. 1) may be inserted from the opening at the upper end.

  In the present embodiment, a so-called valve stem is employed as the pair of valves for opening and closing the discharge passage, and the pair of cylindrical stems 8 and 9 project above the lid body 7 and are provided inside the actuator 10. In addition, it is liquid-tightly connected to a pair of discharge paths (not shown). The discharge paths inside these actuators 10 communicate with a pair of discharge holes 12 and 13 provided in the opening 11 of the actuator 10. The pair of discharge paths inside the actuator 10 may be configured to join before reaching the opening 11 and to be discharged from a single discharge hole in the opening 11.

  On the other hand, the pair of cylindrical stems 8 and 9 are in the illustrated position in a state in which they are always urged upward by a biasing spring (not shown) such as a coil spring built in the lid 7. The valve stem is in the “closed” state.

(Hair cosmetic supplies)
The hair cosmetic product of the present invention is obtained by filling the bag-like body 3 and the bag-like body 4 in the double structure container 1 with the first and second agents of the hair cosmetic, respectively. In some cases, a third agent is attached as an additional component of the hair cosmetic product.

  In the double structure container 1 filled with the first agent and the second agent, the first agent and the second agent in the bag-like bodies 3 and 4 are always subjected to the discharge pressure by the compressed gas in the propellant filling space 5. Yes. When the actuator 10 is pushed down against the urging force of the urging spring, the valve stem is in an “open” state, and the first agent and the second agent are discharged simultaneously. When the pressure on the actuator 10 is released, the valve stem is “closed” and the discharge of the first agent and the second agent stops simultaneously.

  Next, examples and comparative examples of the present invention will be described. The technical scope of the present invention is not limited by the following examples and comparative examples.

[Preparation of hair cosmetics]
The first and second agents of the two-part oxidative hair dye according to each example of Examples 1 to 23 and Comparative Examples 1 to 6 whose compositions are shown in Tables 1 to 4 at the end are according to conventional methods. Prepared. These first and second agents are both emulsified cream preparations. In the table, the numerical value indicating the content of each component is a numerical value in units of mass% in the first agent or the second agent.

  Next, in each table, for each of the first agent and the second agent, “30 rpm viscosity (mPa · s) 3 days later” means that the first agent or the second agent according to each example and each comparative example, After the preparation was allowed to stand for 3 days to stabilize, and then at 25 ° C., using a BL type viscometer VICOMETER, a B type viscometer manufactured by Toki Sangyo Co., Ltd. for 1 minute with a No. 4 rotor, It is a viscosity value (mPa · s) measured under a measurement condition of 30 rpm / min. Also, “12 rpm viscosity (mPa · s) 3 days later” means that the first agent or the second agent according to each example and each comparative example is allowed to stand for 3 days after preparation and stabilized. Under the condition of 25 ° C., the viscosity value (mPa · m) measured with a No. 4 rotor for 1 minute at 12 rpm / min using a BL type viscometer VICOMETER, a B type viscometer manufactured by Toki Sangyo Co., Ltd. s).

In each table, “V ₃₀ / V ₁₂ (f)” and “V ₃₀ / V ₁₂ (s)” for the first agent and the second agent, respectively, indicate that the first agent (f ) And the second agent (s), the ratio “V ₃₀ / V ₁₂ ” of the measured viscosities V ₃₀ and V ₁₂ is shown. The values of both the viscosity ratio V ₃₀ / V ₁₂ (f) of the first agent and the viscosity ratio V ₃₀ / V ₁₂ (s) of the second agent in each example and each comparative example are 1.3 times each other. Is not exceeded, “(V ₃₀ / V ₁₂ (f)) / (V ₃₀ / V ₁₂ (s))” and “(V ₃₀ / V ₁₂ (s)) / (V ₃₀ / V ₁₂ (f)) ”shows the calculation results. In the “V ₃₀ / V ₁₂ (f)” and “V ₃₀ / V ₁₂ (s)” columns, numbers rounded to three decimal places are entered, but “(V ₃₀ / V ₁₂ (f )) / (V ₃₀ / V ₁₂ (s)) ”and“ (V ₃₀ / V ₁₂ (s)) / (V ₃₀ / V ₁₂ (f)) ”rounded to the second decimal place. The calculation is performed using the numerical values of “V ₃₀ / V ₁₂ (f)” and “V ₃₀ / V ₁₂ (s)”.

  Next, in each table, “nonionic amount” and “oil component amount” for the first agent means the total content of the nonionic surfactant and the oil component in the first agent according to each example. It is a numerical value in% units.

  Next, in each table, “C (n) / C (a)” for the first agent means the total content C (n) of the nonionic surfactant and the higher alcohol in the first agent. The value of the ratio “C (n) / C (a)” in mass% with respect to the amount C (a) is shown.

  Furthermore, in each table, “C (i) / C (n)” for the first agent means the total content C (i) of the ionic surfactant in the first agent and the non-ions in the first agent. It shows the value of the ratio “C (i) / C (n)” in mass% with respect to the total content C (n) of the surfactant.

[Evaluation of hair cosmetics]
(Emulsification stability)
After preparing the creamy first agent according to each example and each comparative example, immediately transfer to a constant temperature room at 60 ° C. and leave to stand, and measure the time required until phase separation of the oil phase and the water phase occurs. Thus, the emulsion stability was evaluated. “◎” when it takes 72 hours or more until the layer separation occurs, “◯” when 24 hours or more and less than 72 hours are required, and “△” when 12 hours or more and less than 24 hours are required. The case where layer separation occurred in less than 12 hours was evaluated as “x”. The evaluation results are shown in the column of “Emulsification stability” in each table.

(Hair dyeing performance)
After preparing the creamy first agent and the second agent according to each example and each comparative example, uniformly mixed using a brush, 2 ml each for a hair bundle sample containing white hair for evaluation having a length of 10 cm. Each was applied uniformly and allowed to stand for 30 minutes for hair dyeing treatment. Thereafter, the hair bundle sample was washed with water and dried, and 10 panelists each evaluated the hair dyeing effect. As the evaluation criteria, the case where the hair dyeing effect is very good is `` ◎ '', the case where it is good is `` ○ '', the case where it is not bad but not good is `` △ '', the case where it is bad is `` X '' It was evaluated.

  In all cases, the most numerous evaluations among the 10 panelists were adopted. When most evaluations were split in two ways, the lower evaluation was adopted. The results of the evaluation are shown in the “hair dyeing performance” column of each table.

(Equal volume discharge)
After the creamy first agent and the second agent according to each example and each comparative example are separately filled and filled in the same pressure discharge type double structure container by the same known amount, the first agent and the second agent are filled. The simultaneous discharge operation of the agent was performed until an amount (based on mass%) of exactly half the filling amount of the second agent was discharged, and the simultaneous discharge operation was stopped at that time.

Then, the mass-based discharge amount of the first agent up to that point was measured, and the ratio of the mass reference of the discharge amount of the first agent to the discharge amount of the second agent was 0.9 or more and 1.1 or less. In the case where the ratio is 0.8 or more and less than 0.9, or more than 1.1 and 1.2 or less.
The case where the ratio is 0.7 or more and less than 0.8, or more than 1.2 and less than or equal to 1.3, is “Δ”, and the case where the ratio is less than 0.7 or exceeds 1.3. “×”. The result of evaluation is shown in the column of “Equal volume discharge” in each table.

  According to the present invention, there is provided a hair cosmetic having rheological properties capable of discharging an equal amount of the first agent and the second agent in a double structure container having a specific discharge mechanism and maintaining an equal amount discharge property over time. Provided.

Claims (6)

A hair cosmetic comprising a first agent and a second agent,
The first agent and the second agent are provided with a first agent filling space and a second agent filling space independently in a propellant filling space filled with a propellant for pressurization, and filling each of these agents. For use in a double-structured container equipped with a mechanism that separates and simultaneously discharges the first agent and the second agent filling the space for use with the propellant,
The first agent and the second agent are both ejected in a cream form. Under conditions of 25 ° C., the viscosity V _{30 at 30} rpm and the viscosity V _{12 at 12} rpm using a B-type rotational viscometer. Viscosity ratio V ₃₀ / V ₁₂ are both 0.5 or more,
The viscosity ratio V ₃₀ / V ₁₂ (f) in the first agent and the viscosity ratio V ₃₀ / V ₁₂ (s) in the second agent are within a range not exceeding 1.3 times each other. Hair cosmetics. The hair cosmetic according to claim 1, wherein the first agent contains one or more nonionic surfactants within a total range of 1 to 10% by mass. The hair cosmetic according to claim 1 or 2, wherein the first agent further contains at least 1% by mass of at least one oily component. The first agent further contains one or more higher alcohols, and is in units of mass% of the total content C (n) of the nonionic surfactant and the total content C (a) of the higher alcohol in the first agent. The hair cosmetic according to claim 2 or 3, wherein the ratio C (n) / C (a) is in the range of 0.3 to 1.0. The first agent further contains at least one ionic surfactant, and the total content C (i) of the ionic surfactant and the total content C (n of the nonionic surfactant in the first agent. The hair cosmetic composition according to any one of claims 2 to 4, wherein a ratio C (i) / C (n) in mass% units of 1) is 1.5 or less. The hair cosmetic composition according to any one of claims 1 to 5,
A first agent filling space and a second agent filling space are independently provided in a propellant filling space filled with a propellant for pressurization, and a first agent filling each of the filling spaces for these agents, and A double-structured container having a mechanism for separating and simultaneously discharging the second agent by the propellant, and a hair cosmetic product comprising:
The hair cosmetic product, wherein the first agent and the second agent of the hair cosmetic are filled in the first agent filling space and the second agent filling space in the double structure container, respectively.