JP6125841B2 - First agent for straightening hair - Google Patents

Description

  The present invention relates to a first hair straightening agent used in a hair straightening treatment using an iron set at a high temperature.

  In the permanent wave treatment that imparts a wave shape to the hair and the permanent treatment that performs straightening treatment, the first permanent agent containing a reducing agent is applied to the hair and the second permanent hair containing an oxidizing agent. In general, the coating is performed. The hair disulfide bond is cut by the reducing action of the first permanent agent, and the hair disulfide bond is formed by the oxidizing action of the second permanent agent. These reduction and oxidation are the principle in the permanent treatment that deforms the hair shape, and the permanent treatment that accompanies a chemical reaction tends to damage the hair.

  Hair straightening treatment is generally classified into cold treatment without heating, warming treatment with heating of 60 ° C. or less, and treatment using an iron set to 100 ° C. or more. It is. In the curly hair straightening process using an iron, the hair is exposed to heat higher than that of other curly hair straightening processes, so that damage caused by the heat is applied to the hair. When the damage increases, the hair tends to have a hard feel, and further, the closer the hair ends, the greater the amount of damage accumulated, so the hair ends tend to feel hard. As one proposal for suppressing such a hair from becoming a hard touch, Patent Document 1 discloses a polyoxyethylene alkyl ether phosphate ester or a salt thereof, a phosphate ester other than a polyoxyethylene alkyl ether phosphate ester or a salt thereof. Disclosed is a first agent for straightening hair containing a salt, an ester composed of a dibasic acid and a monohydric alcohol, and a cationic polymer such as a cationic surfactant or cationized cellulose.

JP 2009-107935 A

  As described above, softness is required for hair after curly hair straightening using an iron. Furthermore, if the thickness of the hair (feeling that there is a coating on the hair surface) can be sensed, the hair may be repaired and the thickness may be required. However, a feeling of thickness is easily obtained by forming a film on the hair surface, and the film formation generally tends to impair the softness of the hair.

  In view of the above circumstances, an object of the present invention is to provide a first agent for straightening hair that improves both the softness and thickness of the hair after hair straightening treatment using an iron.

  As a result of intensive studies by the present inventors on the first agent used for hair straightening treatment using an iron, if a cationized cellulose and an amino-modified silicone emulsion are blended, the hair feels soft and thick. As a result, the present invention has been completed.

  That is, the first hair straightening agent used in the hair straightening treatment using the iron according to the present invention is characterized in that cationized cellulose, an amino-modified silicone emulsion, a reducing agent, and an alkaline agent are blended. . As the amino-modified silicone emulsion, an aminoethylaminopropylsiloxane / dimethylsiloxane copolymer emulsion is preferably blended.

  In the first agent for straightening hair according to the present invention, the blending amount of the amino-modified silicone by blending the amino-modified silicone emulsion is preferably 0.03% by mass or more and 1% by mass or less.

  Dimethiconol may be added to the first agent for straightening hair according to the present invention. By blending dimethiconol, the fingering of the hair after straightening treatment is improved.

  The hair straightener according to the present invention comprises the first agent for straightening hair of the present invention and the second agent for straightening hair containing an oxidizing agent.

  Since the first agent for straightening hair according to the present invention is a mixture of cationized cellulose and an amino-modified silicone emulsion, the softness of the hair and the feel of the thickness are improved.

Based on the first agent for straightening hair according to the embodiment of the present invention, the present invention will be described below.
The first agent for straightening hair according to the present embodiment (hereinafter, “first agent for straightening hair” may be referred to as “first agent”) includes cationized cellulose, amino-modified silicone emulsion, and reducing agent. , And an alkaline agent are blended with water (the blending amount of water is, for example, 50% by mass or more). Moreover, the raw material mix | blended with the well-known 1st agent is suitably mix | blended with the 1st agent of this embodiment as an arbitrary raw material.

(Cationized cellulose)
In the first agent of the present embodiment, cationized cellulose (chemical name: chloride O- [2-hydroxy-3- (trimethylammonio) propyl] hydroxyethylcellulose) is blended together with an amino-modified silicone emulsion to correct hair curling. The feel of the hair after treatment shall be soft and thick. Moreover, the combination improves the gloss of the hair when it appears.

  The cationized cellulose preferably has a viscosity of 200 mPa · s or more and 40000 mPa · s or less, and preferably 10,000 mPa · s or more and 40000 mPa · s or less when it is made into a 2% by mass aqueous solution. For the viscosity of the 2% by weight aqueous solution of cationized cellulose, a value obtained 60 seconds after the start of measurement was adopted under the conditions of 25 ° C. and 12 rpm using a B-type viscometer equipped with a rotor selected according to the viscosity. To do.

  The degree of cationization of the cationized cellulose (percentage of nitrogen-containing mass in the cationized cellulose) is, for example, 1.3% or more and 2.0% or less, and preferably 1.5% or more and 2.0% or less.

  The compounding quantity of the cationized cellulose in the 1st agent of this embodiment is 0.5 mass% or less, for example, and is good in it being 0.04 mass% or more and 0.3 mass% or less.

(Amino-modified silicone emulsion)
The amino-modified silicone emulsion to be blended with the first agent of this embodiment is obtained by dispersing amino-modified silicone in water with a surfactant before blending. For example, “SM 8904 COSMETIC EMULSION” in which an aminoethylaminopropylsiloxane / dimethylsiloxane copolymer is dispersed with a cationic surfactant sold by Toray Dow Corning is a commercially available product containing an amino-modified silicone emulsion.

  In the first agent of the present embodiment, the blending amount of the amino-modified silicone by blending the amino-modified silicone emulsion is preferably 0.03% by mass or more and 1% by mass or less, and 0.1% by mass or more and 0.5% by mass. The following is preferable, and 0.1 mass% or more and 0.4 mass% or less are more preferable. When the amount is within this range, the softness, thickness and gloss of the hair are particularly good.

(Reducing agent)
A reducing agent blended in a known first agent may be blended in the first agent of the present embodiment. Examples of the reducing agent include thioglycolic acid, thioglycolate (ammonium thioglycolate, monoethanolamine thioglycolate), L-cysteine, L-cysteine hydrochloride, DL-cysteine, DL-cysteine hydrochloride, N- Examples include acetyl-L-cysteine, cysteamine, thiolactic acid, thioglycerin, and lactone thiol.

  One or two or more reducing agents may be added to the first agent of the present embodiment. Although the compounding quantity of the reducing agent in the said 1st agent should be set suitably, it is 2 mass% or more and 12 mass% or less, for example.

(Alkaline agent)
In order to increase the reducing power of the first agent of this embodiment, a known first agent is blended. Examples of the alkali agent include ammonia, amino alcohol (monoethanolamine, triethanolamine, isopropanolamine, 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1,3-propanediol. ), Basic amino acids (such as arginine), morpholine, carbonates (such as ammonium carbonate, ammonium bicarbonate, sodium carbonate, sodium bicarbonate), phosphates (such as ammonium monohydrogen phosphate, sodium monohydrogen phosphate), Caustic alkali (potassium hydroxide, sodium hydroxide) can be mentioned.

  In the first agent of the present embodiment, one or more alkali agents may be blended. The blending amount of the alkaline agent in the first agent may be an amount corresponding to the pH of the first agent to be set.

(Optional raw material)
The arbitrary raw material mix | blended with the 1st agent of this embodiment is suitably selected from the raw material mix | blended with a well-known 1st agent as above-mentioned. The raw materials are nonionic surfactant, anionic surfactant, cationic surfactant, amphoteric surfactant, polymer compound, silicone, hydrocarbon, wax, higher alcohol, polyhydric alcohol, fatty acid, fat, ester oil, protein Amino acids, chelating agents, anti-inflammatory agents, preservatives, perfumes and the like.

  If dimethiconol is blended with the first agent of the present embodiment, it is possible to improve the fingering of the hair after the curly hair straightening treatment. In this case, the blending amount of dimethiconol in the first agent is preferably 0.01% by mass or more and 0.08% by mass or less, and preferably 0.01% by mass or more and 0.05% by mass or less.

  When making the 1st agent of this embodiment into cream form, it is good to mix | blend a higher alcohol and a cationic surfactant, for example. Moreover, you may mix | blend an anionic surfactant.

  The higher alcohol may have 14 to 22 carbon atoms, for example, linear saturated alcohols such as myristyl alcohol, cetyl alcohol, stearyl alcohol, aralkyl alcohol, and behenyl alcohol; Saturated alcohols; branched saturated alcohols such as hexyl decanol, octyl decanol, isocetyl alcohol, isostearyl alcohol; One or two or more higher alcohols may be blended, and the blend amount of the higher alcohol in the first agent of the present embodiment is, for example, 3% by mass or more and 8% by mass or less.

  Examples of the cationic surfactant include dilong alkyl dimethyl ammonium salts such as distearyl dimethyl ammonium chloride, dicetyl dimethyl ammonium chloride and dicocoyl dimethyl ammonium chloride; behenyl trimethyl ammonium chloride, behenyl trimethyl ammonium methosulfate, chloride Mono long-chain alkyltrimethylammonium salts such as stearyltrimethylammonium bromide, stearyltrimethylammonium bromide, cetyltrimethylammonium bromide; and long-chain alkoxyalkyltrimethylammonium salts such as stearoxypropyltrimethylammonium chloride. One or two or more cationic surfactants may be blended, and the blending amount of the cationic surfactant in the first agent of the present embodiment is, for example, 1% by mass or more and 5% by mass or less.

  Examples of the anionic surfactant include N-acyl amino acid salts, fatty acid salts, alkyl ether carboxylates, fatty acid amide ether carboxylates, fatty acid amide ether carboxylic acids, carboxylic acid anionic surfactants such as acyl lactates; Phosphoric acid anionic surfactants such as phosphates, polyoxyethylene alkyl ether phosphates, alkylaryl ether phosphates, fatty acid amide ether phosphates; alkane sulfonates, α-olefin sulfonates, α- Sulfoic acid type such as sulfo fatty acid methyl ester salt, acyl isethionate, alkyl glycidyl ether sulfonate, alkyl sulfosuccinate, alkyl sulfoacetate, alkyl benzene sulfonate, alkyl naphthalene sulfonate, N-acyl methyl taurate Anionic surfactants; sulfate anionic surfactants such as alkyl sulfates, alkyl ether sulfates, alkylaryl ether sulfates, fatty acid alkanolamide sulfates, fatty acid monoglyceride sulfates; One or two or more anionic surfactants may be blended, and the blending amount of the anionic surfactant in the first agent of the present embodiment is, for example, 1% by mass or more and 5% by mass or less.

(Form)
The dosage form at the time of use of the first agent is not particularly limited, and examples thereof include liquid, cream and gel. The viscosity in the case of a cream type is, for example, 4000 mPa · s or more and 30000 mPa · s or less after 60 seconds measured at 25 ° C. using a rotor selected according to the viscosity in a B-type viscometer.

(PH)
The pH of the 1st agent of this embodiment is 11.0 or less alkaline, for example, and 8.0 or more and 10.0 or less are good.

(how to use)
A hair straightener comprising the first agent of the present embodiment and a known second agent for straightening hair (hereinafter, “second agent for straightening hair” may be referred to as “second agent”). In the hair straightening treatment to be used, the first agent of the present embodiment is used.

  The said 2nd agent is good in a well-known oxidizing agent and arbitrary raw materials being mix | blended. The oxidizing agent to be blended is, for example, bromate (sodium bromate, potassium bromate, etc.) or hydrogen peroxide. Optional raw materials include, for example, nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, polymer compounds, silicones, hydrocarbons, waxes, higher alcohols, polyhydric alcohols, fatty acids, fats and oils, Examples include ester oils, proteins, amino acids, chelating agents, anti-inflammatory agents, preservatives, and fragrances. The pH of the second agent is, for example, 5.0 or more and 8.0 or less when blending bromate, and is 2.0 or more and 4.0 or less, for example, when blending hydrogen peroxide. is there.

  Moreover, the curly hair straightening process has the following procedures (1) to (5), for example. (1) The first agent is applied to the hair, and the reduction reaction of disulfide bonds proceeds in the keratin of the hair. (2) The first agent applied to the hair is washed away and the hair is dried. (3) Using an iron equipped with a pair of plate-like heating elements (heating element set temperature is 160 ° C. or higher and 220 ° C. or lower, for example), the hair state is stretched so as to approach a straight line. (4) The second agent is applied to the hair, and the oxidation reaction proceeds in the keratin of the hair. (5) The second agent applied to the hair is washed away and dried to finish.

  EXAMPLES Hereinafter, although this invention is explained in full detail based on an Example, this invention is not interpreted limitedly based on description of this Example.

  Water, cationized cellulose (“UCARE Polymer JR-30M” manufactured by Dow Chemical Japan Co., Ltd.), aminoethylaminopropylsiloxane / dimethylsiloxane copolymer emulsion-containing commercial product (aminoethylaminopropylsiloxane / dimethylsiloxane copolymer 40 "SM 8904 COSMETIC EMULSION" manufactured by Toray Dow Corning Co., Ltd. and dimethicone (methyl polysiloxane: highly polymerized methyl polysiloxane (1) = 9: 1) by mass ratio "BY11-" 007 "), acrylamide / acrylic acid / dimethyldiallylammonium chloride copolymer, dimethyldiallylammonium chloride / acrylic acid copolymer, polydimethylmethylenepiperidinium chloride, aminoethylaminopropyl Lopylsiloxane / dimethylsiloxane copolymer, highly polymerized methylpolysiloxane (1), dimethiconol-containing commercial product (dimethiconol: cyclopentasiloxane = 15: 85 by mass ratio manufactured by Momentive Performance Materials Japan GK XF49-C2520 "), cetostearyl alcohol, myristyl alcohol, stearyltrimethylammonium chloride, cetyltrimethylammonium bromide, dicetyl phosphate, polyoxyethylene cetyl ether phosphate, polyoxyethylene stearyl ether, polyoxypropylene stearyl ether, soft lanolin Fatty acid cholesteryl, isopropyl palmitate, dipropylene glycol, isopropanol, ethanol, ammonium thioglycolate, thioglycol A raw material selected from monoethanolamine foruric acid, diammonium dithiodiglycolate, monoethanolamine, a chelating agent, and a fragrance is blended, and the creamy first agent of each Example and Comparative Example shown in Tables 1 to 4 below. It prepared (The compounding density | concentration of the raw material mix | blended with water is as the following Tables 1-4.).

(Hair straightening treatment using the first agent of Example 1 and Comparative Example 1)
Apply different first agent (first agent of Example 1 or Comparative Example 1) to the left and right hairs of the human head that has been washed with shampoo and wiped off with a towel, left for about 20 minutes, washed with water, and dried. I let you. Subsequently, the hair was stretched using an iron (a plate-like heating element set temperature: 180 ° C.) provided with a pair of plate-like heating elements, and the second agent (“Rissio Granfe second agent” manufactured by Milbon) was applied. It was left for 5 minutes, washed with water and dried.

Three evaluators with regard to the hair after the above-mentioned curly hair treatment, the softness (feel of softness up to the hair ends), the thickness (feel of the coating on the hair surface), and the gloss (the gloss of the hair when it appears) Sensory evaluation. Here, it evaluated as follows on the basis of the comparative example 1. FIG.
○: All the evaluators are evaluated as being better than the standard ―: Some of the evaluators are evaluated as being better than the standard ×: All the evaluators are evaluated as being worse than the standard

  Table 1 below shows the raw materials and amounts blended with water for the production of the first agent of Example 1 and Comparative Example 1, and the evaluation results of the hair after straightening treatment.

  In Table 1 above, Example 1 in which cationized cellulose and an amino-modified silicone emulsion (aminoethylaminopropylsiloxane / dimethylsiloxane copolymer emulsion) were blended together was more effective than Comparative Example 1 in which cationized cellulose was not blended. It can be confirmed that the evaluation was good for all of softness, thickness, and gloss.

(Hair straightening treatment using the first agent of Examples 2a to 2c and Comparative Examples 2a to 2b)
Apply about 2 g of the hair bundle to the hair bundle after washing with shampoo and wiping away moisture with a towel (about 2 g, with a treatment history of about 30 cm of oxidative hair dye) and leave it for about 20 minutes. Then, it was washed with water and dried. Subsequently, the hair was stretched using an iron (a plate-like heating element set temperature: 180 ° C.) provided with a pair of plate-like heating elements, and the second agent (“Rissio Granfe second agent” manufactured by Milbon) was applied. The hair bundle after straightening treatment was evaluated by three evaluators using Comparative Example 2a as a reference in the same manner as in Example 1.

  Table 2 below shows the raw materials and amounts blended with water for the production of the first agents of Examples 2a to 2c and Comparative Examples 2a to 2b, and the evaluation results of the hair bundle after the curly hair straightening treatment.

  In Table 2 above, Examples 2a to 2c in which an amino-modified silicone emulsion (aminoethylaminopropylsiloxane / dimethylsiloxane copolymer emulsion) was blended included Comparative Example 2a in which the amount of amino-modified silicone was increased and Comparative Example 2b in which dimethicone was blended. It can be confirmed that the evaluation was good for all of softness, thickness, and gloss. In addition, when sensory evaluation was performed based on Example 2b in Examples 2a to 2c, the softness, thickness, and gloss of Example 2b were all better than Examples 2a and 2c.

(Hair straightening treatment using the first agent of Comparative Examples 3a to 3d)
The hair straightening treatment using the first agent of Comparative Examples 3a to 3d was performed in the same manner as the hair straightening treatment using the first agent of Example 2a. Moreover, about the hair bundle after this curly hair straightening process, it evaluated by three evaluators on the basis of the comparative example 3a similarly to evaluation in Example 1. FIG.

  Table 3 below shows the raw materials and amounts blended with water for the production of the first agents of Comparative Examples 3a to 3d, and the evaluation results of the hair bundles after the curly hair straightening treatment.

(Hair straightening treatment using the first agent of Examples 4a to 4b)
The human hair straightening treatment using the first agent of Comparative Examples 4a to 4b was performed in the same manner as the hair straightening treatment using the first agent of Example 1. Moreover, the hair straightening process of the hair | bristle bundle using the 1st agent of Comparative Examples 4a-4b was performed similarly to the hair straightening process using the 1st agent of Example 2a. About the hair and hair bundle which performed the above-mentioned curly hair straightening process, the evaluation of softness, thickness, and fingering was evaluated by three evaluators based on Example 4a.

  Table 4 below shows the raw materials and amounts blended with water for the production of the first agent of Examples 4a to 4b, and the evaluation results of the hair and hair bundles after the curly hair straightening treatment (the evaluation results are It was the same for the hair and the hair bundle.)

  In Table 4 above, it can be confirmed that Example 4b in which dimethiconol was blended had a better evaluation of thickness and fingering than Example 4a in which aminoethylaminopropylsiloxane / dimethylsiloxane copolymer was blended.

Claims (5)

A first agent for straightening hair used in straightening treatment using an iron,
Formulated with cationized cellulose, amino-modified silicone emulsion, reducing agent, and alkali agent ,
The first agent for straightening curly hair , wherein the compounding amount of the amino-modified silicone by blending the amino-modified silicone emulsion is 0.1% by mass or more and 0.5% by mass or less .   The first agent for straightening hair according to claim 1, wherein an aminoethylaminopropylsiloxane / dimethylsiloxane copolymer emulsion is blended as the amino-modified silicone emulsion. The first agent for straightening hair according to claim 1 or 2, wherein the amount of the cationized cellulose is 0.5% by mass or less.   The first agent for straightening curly hair according to any one of claims 1 to 3, wherein dimethiconol is blended.   A hair straightener comprising the first agent for straightening hair according to any one of claims 1 to 4, and a second agent for straightening hair containing an oxidizing agent.