JP2011037773A - Emulsifying thickener and hair treatment agent containing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hair treatment agent having appropriate viscosity, excellent stability, being readily prepared, and giving smoothness to the hair with no stickiness or stiffness after treatment. <P>SOLUTION: The hair treatment agent includes, as an emulsifying thickener, a composition including (A) 35-40 mass% of a copolymer obtained by copolymerizing 2-acrylamide-2-methyl propane sulfonic acid or a salt thereof, N, N-dimethyl acrylamide and acrylic acid or a salt thereof, (B) 23-28 mass% of isohexadecane, (C) 3-8 mass% of sorbitan polyoxyethylene monostearate, and (D) 24-39 mass% of water (the total amount of the components (A) to (D) is 100 mass%). The amount of the emulsifying thickener contained is preferably 0.1-10 mass% based on the total amount of the hair treatment agent. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a hair treatment agent such as a hair treatment agent, a hair cream, a hair dye, a hair dye, and a permanent wave agent, and more particularly, in the preparation of a lotion or emulsion in a hair treatment agent that requires viscosity. In addition, when the hair treatment agent is applied to the hair, no dripping occurs, no stickiness at the time of application, good elongation, easy application to the hair, and smoothness can be imparted to the hair after application. The present invention relates to a hair treatment agent.

  Hair treatment agents, particularly emulsified emulsions such as hair creams, hair lotions, and hair gels, contain an emulsifier for blending oily components, and a thickener for thickening. In general, for thickening, natural or semi-synthetic thickeners such as xanthan gum, pectin, gum arabic, maltodextrin, starch, gelatin and cellulose derivatives (Patent Documents 1 and 2), carboxyvinyl polymers, polyvinyl alcohol Synthetic polymers (Patent Document 3, Patent Document 4) such as polymers and copolymers of acrylic acid and acrylamide are used.

  However, when preparing a hair treatment agent using a conventional thickener, it takes time to disperse the thickener in an aqueous phase or the like, and it is necessary to adjust the pH. I felt inconvenient.

  In addition, in hair dyes and permanent wave agents, it is required to keep each formulation stable in a wide range of pH 2 to 9 in order to sufficiently exert the effect of the active ingredient, and further, affinity with water, Although it is necessary to consider dripping prevention, influence on dyeing and permanent power, and feel of hair after treatment, conventional thickeners do not always satisfy these requirements sufficiently.

Furthermore, since many of the conventional thickeners do not have emulsifying power alone or do not have sufficient emulsifying power, it is necessary to devise combinations such as adding other emulsifiers. It was sought after.
JP2002-80330 JP2003-95881A JP 2001-114641 A JP 2004-67651 A

  In order to solve the problems described above, the present invention has a stable thickening power and an emulsifying power, is easy to prepare, is easy to apply to hair, and is a hair dye, a permanent agent, etc. It is an object of the present invention to provide a hair treatment agent that does not give the hair after treatment a wrinkle or stickiness without impairing the original effects of the hair treatment agent.

  As a result of researches to solve the above problems, the present inventors have copolymerized (A) 2-acrylamido-2-methylpropanesulfonic acid or a salt thereof, N, N-dimethylacrylamide and acrylic acid or a salt thereof. When the hair treatment agent contains a composition comprising (B) isohexadecane, (C) sorbitan polyoxyethylene monostearate, and (D) water as an emulsion thickener, In order to complete the present invention, it has been found that the hair treatment agent with excellent strength and viscosity can be easily solved, and the hair treatment agent after preparation has excellent stability and does not give the hair after application to the hair without being stiff or sticky. It came.

That is, the following components (A) to (D):
(A) 35-40% by mass of a copolymer obtained by copolymerizing 2-acrylamido-2-methylpropanesulfonic acid or a salt thereof, N, N-dimethylacrylamide and acrylic acid or a salt thereof,
(B) 23 to 28% by mass of isohexadecane,
(C) 3-8% by mass of sorbitan polyoxyethylene monostearate,
(D) Water 24-39 mass%
The hair treatment agent characterized by containing the composition [The total amount of component (A)-(D) is 100 mass%] as an emulsification thickener is provided (Claim 1).

  The copolymer of component (A) is a copolymer obtained by copolymerizing 2-acrylamido-2-methylpropanesulfonic acid or a salt thereof, N, N-dimethylacrylamide and acrylic acid or a salt thereof. Of the three monomers, 2-acrylamido-2-methylpropanesulfonic acid and acrylic acid are preferably alkali metal salts such as sodium or potassium salts, ammonium salts such as amino salts such as monoethanolamine salts. The salt is partially or wholly formed in the form of an alcohol salt or an amino acid salt such as a lysine salt, and copolymerized with a neutral monomer N, N-diethylacrylamide.

  The copolymer of component (A) comprises 90 mol% to 40 mol% partially or wholly salted 2-acrylamido-2-methylpropanesulfonic acid monomer and 60 mol% to 10 mol% N. , N-dimethylacrylamide monomer and copolymerized at a ratio of 1 mol% to 30 mol% partially or totally salted acrylic acid monomer (total mol% of each monomer is 100) However, it is preferable because the effect as a thickener is more exhibited.

  The component (B) isohexadecane forms an oil phase, the component (C) polyoxyethylene monostearate sorbitan is an emulsifier, and a mixture of components (A) to (D) together with the component (D) water. Forms a W / O type emulsion. This composition is characterized in that it is easily and rapidly phase-inverted and emulsified by addition of water to form spherical microgels, and the proportion of components (A) to (D) in the composition is The amount of components (A) to (D) in the composition is not greater than the above range or less than the above range, because it does not form a W / O emulsion or does not easily form a microgel upon addition of water. It needs to be in the range described above.

  35-40% by mass of a copolymer consisting of a salt of 2-acrylamido-2-methylpropanesulfonic acid, a partially neutralized salt of N, N-dimethylacrylamide and acrylic acid, 23-28% by mass of isohexadecane, polyoxy As a composition containing 3 to 8% by mass of sorbitan ethylene monostearate and 24 to 39% by mass of water (total amount of each component is 100% by mass), SIMULGEL SMS 88 (trade name) manufactured by Sepic Co., Ltd. is mentioned. It is done.

  Invention of Claim 2 is a hair treatment agent whose content in the hair treatment agent of the composition which consists of said component (A)-(D) is 0.1 mass%-10 mass%.

  When the amount of the composition comprising the components (A) to (D) in the hair treatment agent is below the above range, the emulsifying power and the thickening power are poor, and the stability of the hair treatment agent after preparation is poor. There is a risk of becoming. Moreover, when the amount of the composition comprising the components (A) to (D) in the hair treatment agent exceeds the above range, the viscosity of the prepared microgel becomes too high to be applied smoothly to the hair. , Hair after application may be stiff or sticky.

  The hair treatment agent of the present invention has an appropriate viscosity and does not cause dripping when a lotion or emulsion is prepared or applied to hair. Moreover, there is no stickiness at the time of application | coating, elongation is good, it is easy to apply | coat to hair, and smoothness can be provided to the hair after application | coating. Moreover, the preparation of a hair treatment agent that requires viscosity is simple, and the stability of the prepared treatment agent is excellent.

  The hair treatment agent of the present invention is intended for hair treatment agents that require viscosity such as hair treatment agents, hair creams, hair rinses, hair dyes, hair dyes, permanent wave agents, and the like. The composition comprising (A) to (D) is preferably prepared by containing 0.1% by mass to 10% by mass.

  As long as the effects of the present invention are not impaired, the hair treatment agent of the present invention can be appropriately mixed with other components. Examples of such components include fats and oils, waxes, hydrocarbons, esters. Oils, oily raw materials such as silicone oils, fatty acids, lower alcohols, higher alcohols, polyhydric alcohols, surfactants, protein hydrolysates and derivatives thereof, amino acids, polypeptides, saccharides, polymers, Powders, colorants, UV protection agents, vitamins, animal and plant extracts, antioxidants, bactericides / preservatives, acids, penetration enhancers, pH buffering agents, anti-inflammatory agents, sequestering agents, fragrances, hair restorers , Skin roughening agents, anti-aging agents and the like.

  Specific examples of oily raw materials include, for example, olive oil, macadamia nut oil, cocoon oil, medfoam oil, high oleic sunflower oil, high oleic safflower oil, castor oil, jojoba oil, carnauba wax, candelilla wax, lanolin, rice bran wax, liquid paraffin, isoparaffin, Squalane, petrolatum, ceresin, glycerol tri2-ethylhexanoate, glycerol triisostearate, glycerol triisopalmitate, pentaerythritol tetra-2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, diisostearyl malate, 2-ethylhexyl palmitate, cetyl 2-ethylhexanoate, isostearyl isostearate, dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcycle Pentasiloxane, ceramides, and the like silicone oils.

  Examples of fatty acids include octanoic acid, decanoic acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, isostearic acid, isopalmitic acid, 12-hydroxystearic acid, ricinoleic acid, resin acid, Examples include hydrogenated resin acid, abietic acid, rosin, disproportionated rosin, hydrogenated rosin, and tetrahydroabietic acid.

  Examples of the lower and higher alcohols include ethanol, propyl alcohol, octanol, lauryl alcohol, myristyl alcohol, palmityl alcohol, stearyl alcohol, isostearyl alcohol, 2-octyldodecanol, oleyl alcohol, behenyl alcohol, batyl alcohol, and kimyl. Examples of the polyhydric alcohol include glycerin, diglycerin, propylene glycol, dipropylene glycol, polypropylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, and 1,3-butylene glycol. Sorbitol, erythritol, maltitol and the like.

  Examples of the protein hydrolyzate and its derivatives include silk, collagen, keratin, casein, conchiolin, soy protein, wheat protein, rice protein, sesame protein, and the like. Examples of the hydrolyzate include cationized, acylated, esterified and silylated products.

  Examples of the surfactant nonionic surfactant include, for example, polyoxyethylene alkyl ether, polyoxyethylene alkylphenyl ether, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene hydrogenated castor oil , Polyoxyethylene sorbitol tetra fatty acid ester, glycerin fatty acid ester, sorbitan fatty acid ester, polyglycerin fatty acid ester, sucrose fatty acid ester alkyl polyglycoside, polyether-modified silicone and the like. Examples of the anionic surfactant include fatty acid soap, alkane sulfonate, alkyl sulfate, polyoxyethylene alkyl ether sulfate, fatty acid alkanolamide sulfate, fatty acid monoglyceride sulfate, alkyl phosphate, polyoxyethylene alkyl Examples thereof include ether phosphate, N-acyl glutamate, and acyl N-methyl taurate. Examples of cationic surfactants include tetraalkylammonium salts, fatty acid amidoamine salts, and alkyl ether onium salts. Examples of amphoteric surfactants include alkylglycine salts, N-acylaminoethyl- N-2-hydroxyethylglycine salt, fatty acid amidopropyl betaine, N-alkyl-N, N-dimethylammonium-N-propylsulfonate, phosphatidylcholine, phosphatidylinositol, phosphatidylethanolamine, phosphati Examples include dilglycerol, lysolecithin, and lecithin. In addition, surfactants such as polymer type and natural type are also included.

  Examples of the polymers include sodium polyacrylate, carboxyvinyl polymer, vinylpyrrolidone polymer, polyvinyl alcohol, polyacrylamide, amino-modified silicone, methylcellulose, ethylcellulose, hydroxyethylcellulose, carboxymethylcellulose, sodium alginate, sodium hyaluronate, carrageenan Xanthan gum, agar, guar gum, quince seed gum, tamarind gum, starch, dextrin, locust bean gum, chitosan, cationized cellulose, cationized guar gum, polyethylene glycol and the like.

  Examples of UV protection agents include 2-ethylhexyl paramethoxycinnamate, 4-t-butyl-4-methoxybenzoylmethane, paradimethylaminobenzoic acid, homomenthyl salicylate, octyl diparamethoxycinnamate, hydroxymethoxybenzophenone, hydroxymethoxy Examples thereof include benzophenone sulfonate and 2,4,6-trianilino-p- (carbo-2-ethylhexyl-1-oxy) -1,3,5-triazine.

  Examples of vitamins include vitamin A, vitamin C, vitamin E, and derivatives thereof. Examples of plant extracts include peony extract and button skin extract.

  Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. In addition, this invention is not limited by these Examples. Moreover, the compounding quantity of each component in a following example and a comparative example is based on a weight part, and about the thing whose compounding quantity is not solid content, solid content density | concentration is shown in parenthesis after a component name.

Example 1 and Comparative Example 1
Two types of acidic hair dyes having the composition shown in Table 1 were prepared, and the ease of preparation (simpleness), thickening, and operability when applied to hair (smooth adhesion and ease of application) Comparative evaluation was made. The amount of thickener in Comparative Example 1 is the same as that of the emulsion thickener (2-acrylamido-2-methylpropanesulfonate-N, N-dimethylacrylamide-acrylic acid partially neutralized salt) used in the examples. In an amount of the copolymer in the copolymer, isohexadecane, polyoxyethylene monostearate sorbitan and water). This also applies to Comparative Example 2 and below.

  The acid hair dye of Example 1 and Comparative Example 1 was evaluated for ease of preparation, thickening, and operability when applied to hair, and the results of the evaluation are shown in Table 2. The evaluation criteria are shown below. Street. In addition, evaluation of thickening was judged by the aspect of the acidic hair dye when an acidic hair dye was taken in the comb for hair dyeing.

〔Evaluation criteria〕
Ease of preparation
○: Can be prepared in a short time Δ: Time is required but can be prepared ×: Cannot be prepared
Thickening
○: There is viscosity and there is no dripping when taken in comb. △: There is viscosity, but dripping from comb. ×: Dripping from comb.
Operability at the time of application ○: Can be applied smoothly to the hair and has good adhesion △: Can be applied to the hair but has poor adhesion ×: Feels friction when applied to the hair

  Composition comprising 2-acrylamido-2-methylpropanesulfonate-N, N-dimethylacrylamide-acrylic acid partially neutralized salt copolymer, isohexadecane, polyoxyethylene monostearate sorbitan and water as an emulsifying thickener The acidic hair dye of Example 1 blended with the product can be prepared more easily than the acidic hair dye of Comparative Example 1, has an appropriate viscosity, is easy to apply to the hair, and has good adhesion to the hair dye. It was.

Example 2 and Comparative Example 2
Two types of hair creams having the compositions shown in Table 3 were prepared and evaluated for ease of preparation, thickening, operability when applied to hair, and feel (smoothness) of the hair after drying.

  1 g of each of the above hair creams was applied to a hair bundle of 5 g with a length of 20 cm subjected to bleach treatment, and after evaluating the operability during application, the hair was dried with a hair dryer, and the feel of the hair after drying was evaluated. The ease of preparation at the time of preparation of the hair cream and the operability during application to the hair were evaluated by the same evaluation criteria as in Example 1, and the feel of the hair after drying was evaluated by the following evaluation criteria. The results are shown in Table 4.

Feel of hair after application ○: Hair is very smooth △: Hair is slightly smooth ×: Hair is not sticky and smooth

  Composition comprising 2-acrylamido-2-methylpropanesulfonate-N, N-dimethylacrylamide-acrylic acid partially neutralized salt copolymer, isohexadecane, polyoxyethylene monostearate sorbitan and water as an emulsifying thickener The hair cream of Example 2 blended with the product can be prepared simply by mixing each raw material at room temperature, and is easy to apply because it stretches well when applied to the hair, and the hair feels smooth after drying. The unity was good.

Example 3 and Comparative Example 3
Two types of permanent wave first agent solutions having the compositions shown in Table 5 were prepared, the viscosity of the preparation was evaluated, and the finished state of the wave and hair after the permanent wave treatment was comparatively evaluated.

  Using the first agent for permanent wave of Example 3 and Comparative Example 3 and a 6% aqueous solution of sodium bromate as the second agent, each hair bundle of 20 g in length was subjected to permanent wave treatment, and the permanent wave treatment was performed. Later hair feel was evaluated. The ease of preparation of the first agent for permanent wave, thickening and operability when applied to hair were evaluated according to the same evaluation criteria as in Example 1. The feel of hair after permanent wave treatment was the same as in Example 2. Evaluation was based on the evaluation criteria. The results are shown in Table 6.

  Composition comprising 2-acrylamido-2-methylpropanesulfonate-N, N-dimethylacrylamide-acrylic acid partially neutralized salt copolymer, isohexadecane, polyoxyethylene monostearate sorbitan and water as an emulsifying thickener The first agent for permanent wave of Example 3 blended with a product can be easily prepared, maintains a stable viscosity that is easy to apply to hair, and has good elongation when applied to hair. The feel was smooth.

Example 4 and Comparative Example 4
Two types of oxidized hair dye first agent having the composition shown in Table 7 were prepared, and each was mixed with the oxidized hair dye second agent having the composition shown in Table 8 at a mass ratio of 1: 1, and the respective viscosities. The easiness of mixing the first agent and the second agent, the operability when applied to the hair, and the hair dyeability were evaluated.

  About the oxidation hair dye 1st agent of the said Example 4 and the comparative example 4, the ease of mixing with a 2nd agent (ease of mixing), the uniformity of a mixture, the viscosity of a mixture, the hair to a hair of a mixture The operability at the time of application (smooth attachment and ease of application) and the feel of hair after hair dyeing (smoothness) were evaluated. The evaluation results are shown in Table 9, and the evaluation criteria are as shown below. In addition, evaluation of viscosity was judged by the aspect of the hair dye when the mixture was taken up in the hair comb.

〔Evaluation criteria〕
Ease of mixing
○: Can be mixed in a short time △: Time is required but mixing is possible ×: Cannot be mixed
Uniformity of the mixture ○: Uniformity △: A lump is formed at the time of mixing, but it becomes uniform if mixed well ×: A lump remains
Viscosity ○: Viscosity and no dripping when taken on comb △: Viscosity but dripping from comb ×: Dripping from comb
Operability during application ○: Can be applied smoothly to hair and has good adhesion △: Can be applied to hair but has poor adhesion ×: Feels friction when applied to hair
Feel of hair after dyeing ○: The hair is very smooth Δ: The hair is slightly smooth ×: The hair is not sticky and smooth

  Copolymer of 2-acrylamido-2-methylpropanesulfonate-N, N-dimethylacrylamide-acrylic acid partially neutralized salt, isohexadecane, polyoxyethylene mono, as an emulsion thickener when mixed with the second agent In the case of the first oxidation hair dye of Example 4 using a composition comprising sorbitan stearate and water, a mixture could be easily prepared, but in the first oxidation hair dye of Comparative Example 4, mixing was possible. In addition to taking time, the mixture remained clumped and not uniform. In addition, when applied to the hair, when the oxidized hair dye first agent of Example 4 was used, it could be applied smoothly, but when the oxidized hair dye first agent of Comparative Example 4 was used, It could not be applied smoothly. Furthermore, the hair after the hair dyeing treatment was very smooth when the first oxidation hair dye of Example 4 was used, but the oxidized hair dye first agent of Comparative Example 4 was used. When used, it was inferior in smoothness.

Example 5
Preparation of a hair straightener first liquid having the composition shown in Table 10 and a hair straightener second liquid having the composition shown in Table 11, evaluating the stability of each viscosity, and operability when applied to the hair Sensory evaluation was performed about the hair after a process.

  Composition comprising 2-acrylamido-2-methylpropanesulfonate-N, N-dimethylacrylamide-acrylic acid partially neutralized salt copolymer, isohexadecane, polyoxyethylene monostearate sorbitan and water as an emulsifying thickener When the hair straightener 1st liquid and the 2nd liquid of Example 5 which blended a thing were prepared, respectively, it has moderate viscosity to treat hair, is excellent in stability, and has good adhesion to hair. The hair after straightening was smooth and smooth.

Example 6
Hair conditioners having the compositions shown in Table 12 were prepared, evaluated for thickening, and applied to the hair for sensory evaluation.

Composition comprising 2-acrylamido-2-methylpropanesulfonate-N, N-dimethylacrylamide-acrylic acid partially neutralized salt copolymer, isohexadecane, polyoxyethylene monostearate sorbitan and water as an emulsifying thickener The hair conditioner of Example 6 using a product was easy to prepare, easy to handle, and imparted smoothness and ease of uniting to the hair.

Claims (2)

The following ingredients:
(A) 35-40% by mass of a copolymer obtained by copolymerizing 2-acrylamido-2-methylpropanesulfonic acid or a salt thereof, N, N-dimethylacrylamide and acrylic acid or a salt thereof,
(B) 23 to 28% by mass of isohexadecane,
(C) 3-8% by mass of sorbitan polyoxyethylene monostearate, and
(D) Water 24-39 mass%,
The hair treatment agent characterized by containing the composition [The total amount of component (A)-(D) is 100 mass%] as an emulsification thickener. The hair treatment agent according to claim 1, wherein the content of the composition comprising the components (A) to (D) in the hair treatment agent is 0.1 to 10% by mass.