JP2001354521A - Hair cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aqueous spray hair cosmetic of an aerosol or pumping type which, in response to the VOC regulation, dries rapidly in spite of the presence of water in it and exhibits an excellent hair setting performance. SOLUTION: This aqueous hair cosmetic contains 0.1-10 wt.% based on the whole components of an amine oxide group-containing polymer and 0.01-3 wt.% based on the whole components of a hydroxy group-containing organic acids.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair cosmetic for spraying containing an amine oxide group-containing resin,
More specifically, the present invention relates to an aqueous hair cosmetic composition which can be used as an aqueous composition and has a low volatile organic compound (VOC) content.

[0002]

2. Description of the Related Art Hair sprays, which are cosmetics for fixing hair, are generally composed of a polymer for fixing hair, essential components such as neutralizers, plasticizers and oils, and highly volatile components such as propellants and alcohol components. Consists of As a result, it is possible to quickly volatilize after spraying the hair to form a desired hairstyle.

In recent years, volatile organic compounds (VOCs)
In the United States and the like, regulations are being set to reduce the content of highly volatile substances contained in hair sprays to 55% by weight or less in consideration of environmental problems caused by hair sprays. In order to respond to such regulations, replacement of a part of highly volatile components with water is being studied. However, when water is included in the hair spray as described above, the time required for drying becomes long, and there is a problem that a desired hair style cannot be fixed.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned prior art, and has been proposed for spray hair cosmetics such as aerosols and pumps which contain water in compliance with VOC regulations. Nevertheless, an object of the present invention is to provide an aqueous spray hair cosmetic which dries quickly and gives excellent hair setting power.

[0005]

Means for Solving the Problems The present inventors have made intensive studies to achieve the above object with respect to a hair cosmetic containing an amine oxide group-containing polymer, and as a result, together with a specific amine oxide group-containing polymer, It has been found that the above object can be achieved by including a specific amount of an organic acid having the formula (I), and thus the present invention has been completed.

That is, the present invention provides an amine oxide group-containing polymer having a structural unit represented by any one of the general formulas (1) to (5) (hereinafter referred to as "component (A)") with respect to all components. 0.1 to 10% by weight, and an organic acid having a hydroxyl group (hereinafter referred to as “component (B)”) in an amount of 0.0
An aqueous hair cosmetic containing 1 to 3% by weight.

[0007]

Embedded image

In the above formulas (1) to (5), R ¹ is a hydrogen atom or a methyl group, and R ² , R ³ and R ⁴ are each independently an alkyl group having 1 to 24 carbon atoms or a carbon atom. 6 to 24 aryl groups or aralkyl groups;
Y represents a methylene bond (—CH ₂ —), an imino bond (—NH—), an ether bond (—O—), or a thia bond (—S—); 0 or 1, n is 1 or 2, one of p and q is 0, and the other is 1.

In the present invention, "aqueous" means "containing water in the components", and the preferred water content is VO
It is a ratio corresponding to the C regulation such that the content of the volatile organic compound in all the components is 55% by weight or less. However, if the water content is excessively high, the drying property after coating may be adversely affected.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail based on the constituent requirements. Amine oxide group-containing polymer (component (A)) The amine oxide group-containing polymer serving as a main component of the hair cosmetic of the present invention has a structural unit represented by any of the general formulas (1) to (5). It is an amine oxide group-containing polymer, and two or more of these structural units may be contained.

[0011]

Embedded image

In the above formulas (1) to (5), R ¹ is a hydrogen atom or a methyl group, and R ² , R ³ and R ⁴ are each independently an alkyl group having 1 to 24 carbon atoms or a carbon atom. 6 to 24 aryl groups or aralkyl groups;
Y represents a methylene bond (—CH ₂ —), an imino bond (—NH—), an ether bond (—O—), or a thia bond (—S—); 0 or 1, n is 1 or 2, one of p and q is 0, and the other is 1.

The divalent linking group represented by X is, for example, a linking group such as an alkylcarboxy bond, an alkylamide bond, an alkylcarbonyloxy bond, a carbonyl bond, an alkylene bond, and an alkylphenyl bond. The nitrogen-containing heterocycle and the methylene bond and the amino bond represented by Y in formulas (1) to (4) have a substituent such as an alkyl group, an aryl group, or an aralkyl group. Is also good.

As the amine oxide group-containing polymer used in the present invention, those having the structural units represented by the above formulas (1) and (5) are preferable. In the present invention, the amine oxide group-containing polymer containing the above-mentioned structural unit is polymerized after previously oxidizing a nitrogen atom-containing unsaturated monomer which is an oxidizing precursor capable of being formed by oxidizing the above-mentioned structural unit. Or a method in which the nitrogen-containing unsaturated monomer is polymerized and then oxidized, but the latter is a precursor of the nitrogen-containing unsaturated monomer. A method based on a method of polymerizing the monomer and then oxidizing the polymer is preferable.

As the amine oxide group-containing polymer used in the present invention, as described above, in addition to those obtained using the precursor nitrogen atom-containing unsaturated monomer, glycidyl (meth) ) Reaction of an unsaturated compound containing an epoxy group such as acrylate or an unsaturated compound containing an isocyanate group such as 2-isocyanatoethyl (meth) acrylate with a compound containing an amine oxide group such as hydroxyethyl-N, N-dimethylamine oxide. Those homopolymerized or copolymerized using the product can also be used.

Examples of the nitrogen-containing unsaturated monomer corresponding to the precursor, which can give an amine oxide group by the above-described oxidization, include the following. i) Examples of monomers capable of forming the structural unit of the formula (1): N, N-dimethylaminoethyl (meth) acrylate;
N, N-diethylaminoethyl (meth) acrylate,
N, N-dimethylaminopropyl (meth) acrylate, N, N-diethylaminopropyl (meth) acrylate, N, N-dimethylaminoethyl (meth) acrylamide, N, N-diethylaminoethyl (meth) acrylamide N, N-dimethyl Aminopropyl (meth) acrylamide, N, N-diethylaminopropyl (meth) acrylamide, N, N-dimethylaminopropionate vinyl, N, N-diethylaminopropionate vinyl, N, N-dimethylacrylamide, N, N-dimethylallylamine , P-dimethylaminomethylstyrene,
p-dimethylaminoethylstyrene, p-diethylaminomethylstyrene, p-diethylaminoethylstyrene, N, N-dimethylvinylamine, N, N-diethylvinylamine, N, N-diphenylvinylamine, or maleic anhydride, itacone anhydride Acid, an anhydride containing an unsaturated group such as citraconic anhydride and N, N-dimethyl-1,3
Reaction products with propanediamine and the like, reaction products of epoxy group-containing unsaturated compounds such as glycidyl (meth) acrylate with N, N-dimethyl-1,3-propanediamine and the like.

However, in this specification, the notation “(meth) acryl” refers to both “acryl” and “methacryl”, and the notation “(meth) acrylate” refers to both “acrylate” and “methacrylate”. Shall be shown. ii) Examples of monomers capable of forming the structural unit of the formula (2) 2-vinylpyridine, 3-vinylpyridine, 4-vinylpyridine, 2-methyl-4-vinylpyridine, 3-methyl-4-vinylpyridine, 2-methyl-5-vinylpyridine, 3-methyl-5-vinylpyridine, 4-methyl-
5-vinylpyridine, 6-methyl-5-vinylpyridine, 2-lauryl-4-vinylpyridine, 2-lauryl-5-vinylpyridine, 2-t-butyl-4-vinylpyridine, 2-t-butyl-5 -Vinylpyridine and the like. iii) Examples of monomers capable of forming the structural unit of formula (3) 1-vinylimidazole, 2-methyl-1-vinylimidazole, 4-methyl-1-vinylimidazole, 5-
Methyl-1-vinylimidazole, 2-lauryl-1-
Vinylimidazole, 4-t-butyl-1-vinylimidazole and the like. iv) Examples of monomers capable of forming the structural unit of the formula (4): 1-vinylpyrrolidine, 1-vinylimidazolidin,
-Vinyloxazolidine, 1-vinylpiperidine, 4-
Methyl-1-vinylpiperidine, 2-lauryl-1-vinylpiperidine, 2-methylpiperidinoethyl (meth)
Acrylate, 4-vinylmorpholine, 2-methyl-4
-Vinyl morpholine, 4-allyl morpholine, 4-vinyl thiamorpholine and the like. v) Examples of monomers capable of forming the structural unit of the formula (5): diallylamine, diallylmethylamine, diallylethylamine and the like.

The amine oxide group-containing polymer used in the present invention comprises one of the various nitrogen atom-containing monomers described above.
Oxidized species or copolymers of two or more types, or copolymers with other types of monomers copolymerizable therewith,
Alternatively, the above-mentioned various nitrogen atom-containing monomers are oxidized in advance to obtain one or two or more copolymers, or copolymers thereof with other types of monomers copolymerizable therewith. It is.

The polymer containing an amine oxide group preferably contains 15 to 100% by weight of a structural unit containing any of the above-mentioned amine oxide groups in the polymer, and more preferably 15 to 90% by weight of the structural unit. It is preferably composed of 85 to 10% by weight of a structural unit derived from another unsaturated monomer, particularly 30 to 80% by weight of the above structural unit and 70 to 20% by weight of a structural unit derived from another unsaturated monomer. % By weight are particularly preferred.

If the amount of the structural unit containing an amine oxide group is less than 15% by weight, the resulting copolymer will have a low water solubility, so that good spray droplets will not be formed, and it will be difficult to wash and remove it during hair washing. On the other hand, this constituent unit is 90% by weight.
If it exceeds, the hair may become sticky during use. In the above-mentioned amine oxide group-containing polymer, 30% by weight or less of the structural unit having an amine oxide group may be replaced by a structural unit derived from a hydrophilic monomer other than the structural unit.

Examples of such a hydrophilic monomer include a nonionic, anionic, cationic or amphoteric monomer, and its solubility in water at 25 ° C. is 5 g / 100 g.
g means more than water. Examples of the nonionic monomer include (meth) acrylonitrile, N-cyclohexylmaleimide, N-phenylmaleimide, N-vinylpyrrolidone, hydroxyethyl (meth) acrylate, polyethylene glycol (meth) acrylate, and (meth) acrylamide. A monomer is exemplified.

Examples of anionic monomers include (meth)
Examples thereof include unsaturated carboxylic acids such as acrylic acid, maleic acid, maleic anhydride, itaconic acid, fumaric acid, and crotonic acid, and sulfonic acid group-containing monomers such as styrene sulfonic acid and sulfoethyl (meth) acrylate. These anionic monomers may be those in which some or all of the acidic groups have been neutralized with a basic compound before or after polymerization.

Examples of the cationic monomer include those obtained by cationizing the tertiary amino group-containing monomer with an alkyl halide such as methyl chloride or a dialkyl sulfate such as dimethyl sulfate. Examples of the zwitterionic monomer include those in which the above-mentioned tertiary amino group-containing monomer is amphoteric with a monohalogenated fatty acid salt such as potassium monochloroacetate or a lactone such as propiolactone.

As described above, the polymer containing a structural unit having an amine oxide group used in the present invention comprises a structural unit derived from another unsaturated monomer, preferably a hydrophobic unsaturated monomer. It is preferable that 85 to 10% by weight be contained in the coalescence. Here, the hydrophobic unsaturated monomer means one having a solubility in water of less than 5 g / 100 g water (25 ° C.).

Examples of such hydrophobic unsaturated monomers include (meth) acrylic esters of alcohols having 1 to 24 carbon atoms, (meth) acrylonitriles such as methacrylonitrile, styrene and p-methylstyrene. Styrene monomers such as methyl vinyl ether; vinyl esters such as vinyl acetate; maleic diesters such as dibutyl maleate; maleimides such as N-cyclohexylmaleimide and N-phenylmaleimide; Examples thereof include pyrrolidones containing an unsaturated group such as vinylpyrrolidone and macromonomers such as a silicone macromer containing a radical polymerizable unsaturated group.

Of these, (meth) acrylates of alcohols having 1 to 24 carbon atoms are preferred. Specific examples thereof include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, pentyl (meth) acrylate, hexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, Alkyl (meth) acrylates such as lauryl (meth) acrylate and stearyl (meth) acrylate, fluoroalkyl (meth) acrylates, hydroxyethyl (meth) acrylate, polyethylene glycol (meth) acrylate, polyethylene glycol di (meth) acrylate, etc. Epoxy group-containing (meth) acrylates such as hydroxy group-containing (meth) acrylates and glycidyl (meth) acrylate.
~ 24 alkyl (meth) acrylates are preferred.

The polymerization or copolymerization of these monomers is carried out by a radical polymerization method as described in the above-mentioned JP-A-10-72323, for example, by azo such as 2,2'-azobisisobutyronitrile. In the presence of a compound or a radical polymerization initiator such as a peroxide such as benzoyl peroxide, usually in an inert gas atmosphere such as nitrogen or argon, 30 to 120
It can be carried out by solution polymerization, bulk polymerization or suspension polymerization at a temperature of about 1C for about 1 to 20 hours.

Also, the above-mentioned unsaturated monomer containing a nitrogen atom,
Oxidation of a homopolymer or a copolymer containing a structural unit obtained therefrom, by the method described in these publications, hydrogen peroxide, ammonium peroxide, sodium peroxide, peracetic acid, metachloroperbenzoic acid, Using a peroxide such as benzoyl peroxide or t-butyl hydroperoxide, or an oxidizing agent such as ozone, the amount of 20 to 100
° C, 0.1-100 hours, preferably 1-5
The reaction can be performed with a reaction time of about 0 hour.

The weight average molecular weight of the amine oxide group-containing polymer used in the present invention is from 5,000 to 1,000,000.
0, preferably 20,000 to 300,00.
0 is particularly preferred. If the weight average molecular weight is less than 5,000, the hair styling power tends to decrease, while 1,000,000
When the molecular weight is larger than 0, the solubility in water is deteriorated and the viscosity of the solution is increased, which may cause a problem during spraying.

The hair cosmetic composition of the present invention essentially contains the above-mentioned amine oxide group-containing polymer in an amount of 0.01 to 10% by weight based on all components, and preferably contains 0.1 to 8% by weight. preferable. If the content of the polymer is less than the above range,
As a hair cosmetic, the adhesion to the hair and the setting power are inferior.On the other hand, when the amount exceeds the above range, the viscosity becomes high at the time of spraying, so that fine spraying becomes difficult or clogging tends to occur. In the case of the above, the suitability as a hair cosmetic becomes insufficient. Hydroxyl-Containing Organic Acid (Component (B)) As the organic acid having a hydroxyl group that can be used in the present invention, a hydroxycarboxylic acid having 3 to 10 carbon atoms is preferable, and specific examples include lactic acid, tartaric acid, citric acid, and the like. Malic acid and the like can be mentioned, among which lactic acid is preferable.

The amount of the hydroxyl group-containing organic acid used is as follows:
The content is preferably 0.01 to 3% by weight in all components. If the addition amount is less than 0.01% by weight, the drying rate after spraying will be slow, while if it is more than 3% by weight, irritation to the skin may appear or container corrosion due to acidity may occur. Problems may occur.
The amount of the hydroxyl group-containing organic acid to be used is such that the pH of the entire aqueous spray hair cosmetic is in the range of 5 to 7.5, so that the irritation to the skin can be further reduced. It is suitable. Organic Solvent (Component (C)) As the organic solvent used in the hair cosmetic of the present invention, any water-soluble solvent that can be used in hair cosmetics can be used without particular limitation. For example, water-soluble solvents such as aliphatic alcohols and ketones having 2 to 6 carbon atoms, specifically, ethanol, acetone, isopropanol, n-propanol, etc., among which ethanol has good solubility in water And low harmfulness.

Organic solvents are used in the hair cosmetic composition of the present invention.
In this case, the amount is preferably not more than 80% by weight of all components.
More preferably, it is set to 55% by weight or less. What
When using the propellant of the following component (D),
Is less than or equal to this value. Propellant (component (D)) The hair cosmetic of the present invention is used for aerosol type spray
When used, it is preferable to use a propellant. here
Propellants that can be used include trichloromonoph
Chlorofluoro such as chloromethane and dichlorodifluoromethane
Alkanes, propane, n-butane, i-butane, pen
Liquefied petroleum gas, which is alkanes such as tan, and mixtures thereof,
Liquefied gas such as dimethyl ether, carbon dioxide, nitrogen,
Compressed gas such as nitrogen oxide and compressed air can be exemplified. Propellant
If used as a mixture of these two or more
May be.

A preferred propellant is dimethyl ether or a mixed gas of liquefied petroleum gas and dimethyl ether. Particularly when using an aqueous spray having a water content of 25% by weight or more, dimethyl ether having good solubility in water is used. Is preferred. Among them, it is preferable to use ethanol as the component (C) and dimethyl ether as the component (D) because of good solubility in water. In this case, add 15 ethanol
It is preferable to use -60% by weight and dimethyl ether of 20-40% by weight. The amount of the propellant to be used is generally 10 to 60% by weight, preferably 20 to 40% by weight, based on all components. If the amount of the propellant is less than 10% by weight, it does not become a mist at the time of injection and becomes a rod-like injection, and a fine mist-like spray may not be obtained. It is not preferable because the stability is insufficient, the injection pressure becomes too high, the mist scatters around, or the hairstyle is broken by the blowing force.

The organic solvent and the propellant whose total amount should be 80% by weight or less in the components (C) and (D) are those having a vapor pressure of 2 mmHg (0.26%) at 20 ° C.
6 kPa) or more and refers to an organic compound having 10 or less carbon atoms. Hair Cosmetic for Aqueous Spray When the hair cosmetic of the present invention is used in the form of an aerosol product in a metal container, in order to ensure stability during storage, corrosion is performed in addition to the above-mentioned components. It is preferable to add the inhibitor, for example, in an amount of 0.001 to 5% by weight based on all components.

Examples of the corrosion inhibitor include monoethanolamine borate, monoisopropanolamine borate, inorganic hydroxides such as sodium hydroxide, ammonium hydroxide and potassium hydroxide, nitromethane, dimethyloxazolidone, and 2-dimethylamino-2-methyl. Examples thereof include -1-propanol and aminomethylpropanol.

The hair cosmetic composition of the present invention contains, in addition to the above-mentioned components, nonionic, anionic and cationic substances commonly used in hair cosmetics as long as the objects and effects of the present invention are not impaired. Or amphoteric resins, nonionic, anionic, cationic or amphoteric surfactants, various oils, alcohols, dimethylpolysiloxane, silicone derivatives such as amino-modified silicone, protein derivatives or degradation products, plant extraction Various additives such as a liquid, an ultraviolet absorber, an antioxidant, a vitamin, a preservative, a dye, and a fragrance may be appropriately compounded.

Specific examples of the above additives include the following. Examples of various surfactants include the following. (Anionic surfactant) triethanolamine lauryl sulfate, sodium cetyl sulfate, sodium lauryl sulfate, sodium N-stearoyl-L-glutamate,
N-myristoyl-L-sodium glutamate, N-
Sodium lauroyl-L-glutamate, sodium lauroyl sarcosine, sodium lauroyl methyl taurine, triethanolamine polyoxyethylene lauryl ether sulfate, sodium polyoxyethylene lauryl ether sulfate, sodium polyoxyethylene alkyl phenyl ether phosphate, polyoxyethylene cetyl ether phosphorus Acid, sodium polyoxyethylene cetyl ether phosphate, polyoxyethylene lauryl ether phosphoric acid, sodium polyoxyethylene lauryl ether phosphate and the like. (Amphoteric surfactant) 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine,
Lauryl dimethylaminoacetic acid betaine, N, N-dimethyl-N-alkyl-N-carboxymethylammonium betaine, N, N-dialkylaminoalkyleneammonium betaine, N, N, N-trialkyl-N-sulfoalkyleneammonium betaine, N , N-dialkyl-N, N-bis (polyoxyethylene sulfate) ammonium betaine and the like. (Cationic surfactant) Cetyltrimethylammonium chloride, distearyldimethylammonium chloride, stearyldimethylbenzylammonium chloride, benzalkonium chloride, stearyltrimethylammonium chloride, lauryltrimethylammonium chloride, cetyltrimethylammonium bromide and the like. (Nonionic surfactant) polyoxyethylene octyl phenyl ether, polyoxyethylene glycol monooleate, diethanolamide stearate, polyoxyethylene hydrogenated castor oil, sorbitan monolaurate,
Polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbita hexastearate, sucrose fatty acid ester, lipophilic glyceryl monooleate, polyoxyethylene glycerin monostearate fatty acid diethanolamide, polyoxyethylene cetyl ether, monolauric acid Polyethylene glycol, sorbitan monooleate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbite tetraoleate, polyoxyethylene glycerin monostearate, and the like.

[0038] The content of these surfactants in the hair cosmetic is usually about 0.01 to 5% by weight. Oil agents include dimethylpolysiloxane, silicon derivatives such as methylphenylsiloxane, castor oil, coconut oil, liquid lanolin, beeswax, squalane, liquid paraffin,
Examples include oleyl alcohol, lauryl alcohol, cetanol, stearyl alcohol, isopropyl myristate, cetyl lactate, diisopropyl adipate, hexyldecyl dimethyloctanoate, decyl oleate, hexyl laurate, butyl stearate, and isopropyl palmitate. The content of these oil agents in hair cosmetics is usually about 0.01 to 45% by weight.

As alcohols, glycerin, 1,
Polyhydric alcohols such as 3-butylene glycol, propylene glycol, polyethylene glycol, mannitol, sorbitol and dipropylene glycol, and monohydric alcohols such as ethanol, isopropanol, cetanol and lauryl alcohol can be used. As the neutralizing agent or the pH adjusting agent, acids and alkalis such as hydrochloric acid, phosphoric acid, succinic acid, citric acid, diisopropanolamine, triethanolamine, ammonia, potassium hydroxide and sodium hydroxide are used.

Since the hair cosmetic composition of the present invention is aqueous, it can reduce the content of volatile organic compounds, and is excellent in spray suitability and drying property after application.
It is suitably used as a set product such as a pump type hair spray, a foam hair spray and a hair mist.

[0041]

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to the following examples unless it exceeds the gist. Amine oxide group-containing polymer The amine oxide group-containing polymer which is a constituent material of the hair cosmetic of the present invention and is used in each of Examples and Comparative Examples is obtained as follows.

N, N-dimethylaminoethyl methacrylate 2 was placed in a 2-liter flask equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen gas inlet tube and a stirrer.
50 g, tert-butyl methacrylate 150 g, isobutyl methacrylate 100 g, and absolute ethanol 50
After charging 0 g, 5 g of 2,2′-azobisisobutyronitrile was added, and the mixture was reacted at a temperature of 80 ° C. for 8 hours in a nitrogen atmosphere, and then cooled to 60 ° C.

Next, a 31% aqueous solution of hydrogen peroxide equimolar to N, N-dimethylaminoethyl methacrylate was gradually added to the polymerization reaction solution over 1 hour with a dropping funnel, and then the temperature was maintained for 20 hours. With stirring, the dimethylamino group was oxidized. Completion of the oxidation reaction was confirmed by measuring the amine value of the reaction solution. Anhydrous ethanol was added to the obtained oxidized polymer solution, and the solid content concentration was reduced to 30% by weight.
To obtain an amine oxide group-containing polymer solution. The obtained polymer solution is referred to as "P-1".

The weight average molecular weight of the obtained polymer was 5
It was 0000. From the infrared absorption spectrum of this polymer, absorption of a NO bond was recognized, and formation of an amine oxide group was confirmed. <Examples 1 to 5, Comparative Example: Preparation and Evaluation of Spray Cosmetic> A solution mixed in the composition shown in Table 1 (where "P-1" is indicated as a solid content) was mixed in a pump spray container (Mitani). (Made by Valve Co.).

An annular hair bundle having a length of 7.5 cm and a weight of 0.1 g was deformed by 2 mm when the probe and the sample stage came closest to a sample base (probe: acrylic plate) of a rheometer manufactured by Leotech. I installed it. The composition was sprayed twice onto the hair tress from a distance of 20 cm, and measurement was started immediately. The measurement was performed on a sample stage of 60
The test was performed under the condition that the probe moved up and down with an amplitude of 10 mm at a speed of mm / min. The presence or absence of stickiness (stickiness) between the probe and the hair bundle and the hardness of the hair bundle were evaluated. And the time until the hardness reached the maximum value was determined. The results are shown in the table as "stickiness elimination time" and "drying time".

[0046]

[Table 1]

<Evaluation of Results> The sprays of the Examples in which lactic acid was added during the blending were less tacky and dry faster than the Comparative Examples.

[0048]

According to the present invention, the volatile organic compound (V
Even when the content of OC) is reduced and water is contained in a relatively large amount, it is possible to provide an aqueous hair cosmetic which can form fine droplets at the time of spraying and can be dried quickly.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4C083 AC011 AC101 AC102 AC171 AC301 AC302 AD131 AD132 BB49 CC31 CC32 DD08 EE06 EE07

Claims (10)

[Claims] 1. An amine oxide group-containing polymer having a structural unit represented by any one of the general formulas (1) to (5) (hereinafter referred to as “component (A)”) is added in an amount of 0.1 to all components. ~ 1
0% by weight, and an organic acid having a hydroxyl group (hereinafter referred to as “component (B)”) in an amount of 0.01 to 3% by weight based on all components.
An aqueous hair cosmetic composition containing. Embedded image In the above formulas (1) to (5), R ¹ is a hydrogen atom or a methyl group, and R ² , R ³ , and R ⁴ are each independently an alkyl group having 1 to 24 carbon atoms or 6 to 24 carbon atoms. the aryl or aralkyl group, X is a divalent linking group, Y is a methylene bond (-CH ₂ -), an imino bond (-
NH-), an ether bond (-O-), or a thia bond (-
S-), m is 0 or 1, n is 1 or 2, one of p and q is 0, and the other is 1. 2. Organic solvent (hereinafter referred to as “component (C)”)
The hair cosmetic according to claim 1, which contains 80% by weight or less. 3. An amine oxide group-containing polymer as the component (A) containing 15 to 100% by weight of a structural unit represented by any one of the formulas (1) to (5) in the whole polymer. The hair cosmetic according to claim 1 or 2, wherein 4. The amine oxide group-containing polymer of the component (A) has a structural unit represented by the above formula (1) and a structural unit represented by the same formula (5). The hair cosmetic according to any one of Items 1 to 3, wherein 5. The hair cosmetic composition according to claim 1, wherein the organic acid having a hydroxyl group of the component (B) is a hydroxycarboxylic acid having 3 to 10 carbon atoms. 6. The hair cosmetic according to claim 5, wherein the organic acid having a hydroxyl group of the component (B) is lactic acid. 7. The hair cosmetic according to claim 2, wherein the organic solvent of the component (C) is ethanol. 8. The hair cosmetic composition according to claim 1, further comprising a propellant (hereinafter, referred to as “component (D)”).
Aqueous hair cosmetic for spraying containing up to 60% by weight. 9. The hair cosmetic for aqueous spray according to claim 8, wherein the propellant of the component (D) is dimethyl ether. 10. Component (C) comprising 15 to 15 ethanol.
60% by weight, 20 parts of dimethyl ether as component (D)
The hair cosmetic for spray according to claim 9, which contains about 40% by weight.