WO2020090793A1 - 毛髪変形処理用中間処理剤、毛髪変形処理方法及び毛髪変形剤 - Google Patents

毛髪変形処理用中間処理剤、毛髪変形処理方法及び毛髪変形剤 Download PDF

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WO2020090793A1
WO2020090793A1 PCT/JP2019/042305 JP2019042305W WO2020090793A1 WO 2020090793 A1 WO2020090793 A1 WO 2020090793A1 JP 2019042305 W JP2019042305 W JP 2019042305W WO 2020090793 A1 WO2020090793 A1 WO 2020090793A1
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agent
hair
treatment
hair deformation
disulfide
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PCT/JP2019/042305
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English (en)
French (fr)
Japanese (ja)
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小野　和美
綱行 石森
大介 渡辺
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株式会社資生堂
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Priority to CN201980070804.XA priority Critical patent/CN112912055A/zh
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/46—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00—Preparations for care of the hair
    • A61Q5/04—Preparations for permanent waving or straightening the hair

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  • the present invention relates to an intermediate treatment agent for hair deformation treatment, a hair deformation treatment method, and a hair deformation agent.
  • the hair deformation treatment such as permanent wave treatment is performed by treating the hair with a reducing agent to cleave the disulfide bond in the hair, applying a wave with a rod or the like, and re-bonding the disulfide bond with an oxidizing agent.
  • Patent Document 1 In hair deformation treatment, attempts have been made to treat the hair with an intermediate treatment agent between the reduction treatment with the first agent and the oxidation treatment with the second agent.
  • a carbonate or hydrogen carbonate and (B) a permanent wave intermediate treatment agent composition containing dithiodiglycolic acid or a salt thereof, and a permanent wave treatment method using the same composition.
  • Example 1 the hair was treated with 1% by mass of disodium dithiodiglycolate as an intermediate treatment agent for 10 minutes.
  • paragraph [0001] of Patent Document 1 describes that the ability to form permanent waves is improved and damage to hair is prevented.
  • Patent Document 2 discloses an intermediate treatment agent for hair deformation treatment, which is used after treating hair with a first agent containing a reducing agent and before treating the hair with a second agent containing an oxidizing agent.
  • An intermediate treatment agent for treating hair deformation which contains 0.1 to 3.5% by mass of the oxidizing agent and has a pH of 6.0 to 10.0. It is described that the oxidizing agent includes an oxidized dimer of a reducing agent such as bromate and diammonium dithiodiglycolate. In Examples 14 to 18, hair was treated with 0.1 to 3.5 mass% of diammonium dithiodiglycolate as an intermediate treatment agent for 3 minutes.
  • Paragraph [0007] of Patent Document 2 describes that various problems occur in the conventional hair treatment agents.
  • the invention of Patent Document 2 is made in view of the above problems, and in a short time, the effect of the hair deformation treatment is sufficiently obtained, and the residual odor is dramatically reduced, resulting in a better finished feeling. It can be obtained.
  • the conventional method could not stably form a large, solid, three-dimensional wave. Therefore, there has been a demand for a hair deformation treatment capable of stably forming a firm, large and three-dimensional wave that is dull.
  • the present invention has been made in view of the above circumstances, and the problem to be solved by the present invention is to provide a stable, firm and large three-dimensional wave, which is an intermediate for hair deformation treatment.
  • a treatment agent a hair deformation treatment method, and a hair deformation agent.
  • the present inventors have found that after treating hair with a first agent containing a reducing agent and before treating hair with a second agent containing an oxidizing agent, a high concentration of 5 to 15% by mass.
  • a high concentration of 5 to 15% by mass Surprisingly, when hair was treated with an intermediate treatment agent for hair deformation treatment containing disulfide, it was possible to obtain a stable, firm and large three-dimensional wave that could not be obtained by the conventional method.
  • the present invention has been completed by finding that they can be made.
  • the present invention is based on such findings, and specifically, the present invention is as follows.
  • An intermediate treatment agent for hair deformation treatment for use after treating hair with a first agent containing a reducing agent and before treating hair with a second agent containing an oxidizing agent, Intermediate treatment agent for hair deformation treatment containing 5 to 15% by mass of disulfide.
  • Disulfides include dithiodiglycolic acid or a salt thereof, dithiodilactic acid or a salt thereof, cystamine or a salt thereof, cystine or a salt thereof, N, N′-diacetylcystine, di (2,3-dihydroxypropyl) disulfide and disulfide.
  • a hair deformation treatment method including the following steps.
  • Step 1) a step of treating hair with a first agent containing a reducing agent;
  • Step 2) a step of treating the hair treated in the step 1 with an intermediate treatment agent for hair deformation treatment containing 5 to 15% by mass of disulfide; and
  • step 3) a hair treated in the step 2.
  • step 3) a hair treated in the step 2.
  • step 3) a hair treated in the step 2.
  • a hair deformation treatment method including the following steps.
  • the disulfide is dithiodiglycolic acid or a salt thereof, dithiodilactic acid or a salt thereof, cystamine or a salt thereof, cystine or a salt thereof, N, N′-diacetylcystine, di (2,3-dihydroxypropyl) disulfide and disulfide.
  • the hair deformation treatment method according to [5] which is one or more disulfides selected from (2-butyrolactyl) disulfide.
  • the hair deformation treatment method according to any one of [5] to [7] in which a firm three-dimensional curl is applied to the hair.
  • a hair deforming agent comprising a first agent containing a reducing agent, an intermediate treatment agent for hair deformation treatment containing 5 to 15% by mass of disulfide, and a second agent containing an oxidizing agent.
  • the disulfide is dithiodiglycolic acid or a salt thereof, dithiodilactic acid or a salt thereof, cystamine or a salt thereof, cystine or a salt thereof, N, N′-diacetylcystine, di (2,3-dihydroxypropyl) disulfide and disulfide.
  • the hair deforming agent according to [10] which is one or more reducing agents selected from (2-butyrolactyl) disulfide.
  • the intermediate treatment agent for hair deformation treatment, the hair deformation treatment method, and the hair deformation agent of the present invention it is possible to form a dull, firm and large three-dimensional wave.
  • the intermediate treatment agent for hair deformation treatment, the hair deformation treatment method and the wave formed by the hair deformation agent of the present invention are retained for a long period of time.
  • FIG. 5 is a photograph showing the experimental results of the study on the concentration of diammonium dithiodiglycolate in Test Example 1.
  • FIG. 3 is a schematic diagram showing lengths a1 to a3 used for measuring the minor axis of treated hair. It is a photograph which shows an experimental result of examination of shampoo of treatment example 4, and processing of treatment.
  • the intermediate treatment agent for hair deformation treatment of the present invention is for hair deformation treatment for use after treating hair with a first agent containing a reducing agent and before treating hair with a second agent containing an oxidizing agent.
  • An intermediate treatment agent for hair deformation treatment containing 5 to 15% by mass of disulfide.
  • the hair to be treated is wrapped around a cylindrical rod or coil having a specific radius, then reduction treatment is performed with the first agent, treatment with an intermediate treatment agent for hair deformation treatment, and oxidation treatment with the second agent. Then, by removing the hair from the rod or the coil, the hair deformation process is performed.
  • any of those usually used for the first agent for hair deformation treatment can be used.
  • the reducing agent one or more selected from cysteamine or a salt thereof, thioglycolic acid or a salt thereof, thiolactic acid or a salt thereof, cysteine or a salt thereof, N-acetylcysteine, sulfite and 2-mercapto-4-butanolide.
  • cysteine and N-acetyl cysteine include those having the structures of L-cysteine, D-cysteine and DL-cysteine.
  • reducing agents selected from salts There may be mentioned one or more reducing agents selected from salts.
  • One or more reducing agents selected from thioglycollate and thiolactate are preferred because they have little effect on the skin.
  • a reducing agent having a basic group, an acidic group, or the like is preferable because it can form a dull, firm and large three-dimensional wave.
  • Examples of the salt of the reducing agent include inorganic acid salts such as hydrochloride, sulfate and nitrate, organic acid salts such as methanesulfonate, benzenesulfonate and maleate, alkali salts such as sodium salt and potassium salt. Examples thereof include alkaline earth metal salts such as metal salts, magnesium salts and calcium salts, inorganic base salts such as ammonia salts, ethanolamine salts, isopropanolamine salts, triethylamine salts, arginine salts, lysine salts and the like.
  • a dimer of the reducing agent such as dithiodiglycolic acid or dithiodilactic acid, may be added to the first agent in an amount equal to or less than the reducing agent.
  • the content of the reducing agent in the first agent, the hair treatment method of the first agent, the pH, the treatment temperature, the treatment time, etc. can be carried out based on a usual method. That is, the content, the treatment method, the pH, the treatment temperature, and the treatment time can be arbitrarily selected according to the reducing agent to be used.
  • the content of the reducing agent in the first agent is, for example, 1 to 15 mass% with respect to the first agent, preferably 2 to 10 mass%, more preferably 4 to 8 mass%.
  • Examples of the pH of the first agent include pH 5 to 10, preferably pH 7 to 10, and more preferably pH 8 to 9.5.
  • the reducing agent remaining on the hair will hinder the subsequent oxidation reaction by disulfide, so it is preferable to wash it off with water.
  • Intermediate treatment agent for hair deformation treatment contains 5 to 15% by mass of disulfide.
  • the intermediate treatment agent for hair deformation treatment By using the intermediate treatment agent for hair deformation treatment, a larger amount of mixed disulfide can be retained, and a dull, firm and large three-dimensional wave can be formed.
  • the disulfide include dithiodiglycolic acid or a salt thereof, dithiodilactic acid or a salt thereof, cystamine or a salt thereof, cystine or a salt thereof, N, N′-diacetylcystine, di (2,3-dihydroxypropyl) disulfide and di ( And one or more disulfides selected from 2-butyrolactyl) disulfide.
  • a disulfide having an acidic or basic group such as an amino group or a carboxyl group is preferred because it can form a firm and large three-dimensional wave that is dull and firm.
  • Preferred disulfides include, for example, dithiodiglycolic acid or a salt thereof, dithiodilactic acid or a salt thereof, cystamine or a salt thereof, cystine or a salt thereof, N, N′-diacetylcystine, and the like, and more preferably dithiodiglycolic acid or a salt thereof. Examples thereof include salts thereof, dithiodilactic acid or salts thereof, cystamine or salts thereof, and the like.
  • disulfide salt examples include inorganic acid salts such as hydrochlorides, sulfates and nitrates, organic acid salts such as methanesulfonate, benzenesulfonate and maleate, alkali metal salts such as sodium salt and potassium salt.
  • examples thereof include alkaline earth metal salts such as salts, magnesium salts and calcium salts, inorganic base salts such as ammonia salts, organic base salts such as ethanolamine salts and triethylamine salts.
  • the content of disulfide in the intermediate treatment agent for hair deformation treatment is 5 to 15% by mass, preferably 5 to 13% by mass, more preferably 6 to 11% by mass, and further preferably 7 to 10 mass% can be mentioned. By using this disulfide content, a firm, large and three-dimensional wave is formed.
  • Comparative Example 6 1% by mass of diammonium dithiodiglycolate, 10 minutes
  • Example 1 of Patent Document 1 and Example 18 of Patent Document 2 are described.
  • Comparative Example 7 (3.5% by mass of diammonium dithiodiglycolate, 3 minutes
  • Example 13 of the present invention 5% by mass of diammonium dithiodiglycolate, 2 minutes
  • the pH of the intermediate treatment agent for hair deformation treatment is preferably, for example, pH 4 to 10, and more preferably pH 5.5 to 10. By adjusting the pH to 4 to 10, a firm, large and three-dimensional wave is formed.
  • the treatment temperature of the intermediate treatment agent for hair deformation treatment is, for example, 10 to 40 ° C., preferably 15 to 30 ° C., and more preferably room temperature.
  • the treatment time of the intermediate treatment agent for hair deformation treatment varies depending on the treatment temperature, but is, for example, 1 to 60 minutes, preferably 2 to 30 minutes, and more preferably 5 to 15 minutes.
  • the treatment with the intermediate treatment agent for hair deformation treatment After the treatment with the intermediate treatment agent for hair deformation treatment is finished, usually it is treated with the second agent as it is without washing with water.
  • the oxidizing agent contained in the second agent includes any oxidizing agent that can be used as the second agent for hair deformation treatment.
  • Specific examples of the oxidizing agent include sodium bromate, bromates such as potassium bromate, sodium perborate, perborates such as potassium perborate, hydrogen peroxide solution, iodine, and oxygen.
  • bromate and perborate are preferable, and bromate is more preferable.
  • the content of the oxidizing agent in the second agent, the hair treatment method of the second agent, the pH, the treatment temperature, the treatment time and the like can be carried out based on a usual method. That is, the content, the treatment method, the pH, the treatment temperature, and the treatment time can be arbitrarily selected according to the oxidizing agent to be used.
  • the pH of the second agent is 8 or more, more preferably 8 to 10.
  • the pH is 8 or more, the rate of the oxidation reaction is slowed down, and more mixed disulfide can be left, whereby a dull, firm and large three-dimensional wave can be formed.
  • a pH adjuster is used to adjust the pH of the first agent, the intermediate treatment agent for hair deformation treatment, and the second agent.
  • the pH adjusting agent include those usually used for hair deformation treatment, and examples thereof include phosphoric acid, hydrochloric acid, sulfuric acid, methanesulfonic acid, citric acid, acetic acid, sodium dihydrogen phosphate, trisodium phosphate, sodium acetate, Sodium hydroxide, sodium carbonate, sodium hydrogen carbonate, potassium hydroxide, potassium carbonate, potassium hydrogen carbonate, monoethanolamine, ammonia, ammonium carbonate, 2-amino-2-methyl-1-propanol, tripotassium citrate, phosphoric acid Examples thereof include diammonium hydrogen.
  • Other components can be added to the first agent, the intermediate treatment agent for hair deformation treatment, and the second agent as long as the effects of the present invention are not impaired.
  • Other components include, for example, higher alcohols, solvents, oils, wetting agents, cationic, anionic and amphoteric surfactants, urea, guanidine, guanidine salts, silicones, aluminum stearate, alum and other aluminum compounds, and quenching agents.
  • Acids succinic acid, acetic acid, lactic acid, tartaric acid, malic acid, glycine, aspartic acid and other organic acids, hydrochloric acid, phosphoric acid and other inorganic acids, ethylenediamine, mono-, di- or tri-ethanolamine, morpholine, basic amino acids Alkaline agents such as ammonia, sodium hydroxide, tetrasodium ethylenediaminetetraacetate, pentasodium diethylenetriaminepentaacetate, sodium polyphosphate, sequestering agents such as phytic acid, proteins, thickeners, emulsifiers, hair restorers, bactericides, colorants , And fragrances.
  • Alkaline agents such as ammonia, sodium hydroxide, tetrasodium ethylenediaminetetraacetate, pentasodium diethylenetriaminepentaacetate, sodium polyphosphate
  • sequestering agents such as phytic acid, proteins, thickeners,
  • the first agent, the intermediate treatment agent for hair deformation treatment, and the second agent are prepared by dissolving them in water or an aqueous solvent to prepare a solution, emulsion, suspension, aerosol or the like.
  • the aqueous solvent include water containing an organic solvent such as ethanol and isopropanol at a concentration that does not affect the human body.
  • the first agent, the intermediate treatment agent for hair deformation treatment, and the second agent are used by applying or spraying on the hair.
  • the intermediate treatment agent for hair deformation treatment of the present invention By performing the hair deformation treatment using the intermediate treatment agent for hair deformation treatment of the present invention, it is possible to apply a firm and large three-dimensional curl that does not drip on the hair. As described in the test example described below, by performing the hair deformation treatment, the minor diameter of curl of hair and the hair thickness are improved as compared with the conventional method which does not use the intermediate treatment agent for hair deformation treatment of the present invention. ..
  • the hair deformation treatment method of the present invention includes the following steps.
  • (Step 1) a step of treating hair with a first agent containing a reducing agent;
  • (Step 2) a step of treating the hair treated in the step 1 with an intermediate treatment agent for hair deformation treatment containing 5 to 15% by mass of disulfide; and
  • (step 3) a hair treated in the step 2.
  • the first agent in step 1 the content of the reducing agent in the first agent, the hair treatment method for the first agent, the pH, the treatment temperature, the treatment time and the like can be the same as described above. Since the reducing agent remaining on the hair after the step 1 will inhibit the oxidation reaction by the disulfide in the subsequent step 2, it is preferably washed with water.
  • the intermediate treatment agent for hair deformation treatment in step 2 the content of disulfide in the intermediate treatment agent for hair deformation treatment, the hair treatment method of the intermediate treatment agent for hair deformation treatment, pH, treatment temperature, treatment time, etc. are as described above. It can be carried out in the same manner.
  • the second agent in step 3 the content of the oxidizing agent in the second agent, the hair treatment method of the second agent, the pH, the treatment temperature, the treatment time and the like can be the same as described above.
  • the hair can be curled by winding the hair around a rod or coil before step 1 and removing the rod or coil after step 3.
  • the hair deformation treatment method of the present invention it is possible to apply a firm and large three-dimensional curl that does not drip on the hair.
  • the hair deformation treatment method of the present invention improves curl short diameter and hair thickness of the hair, as compared with the conventional method that does not use the intermediate treatment agent for hair deformation treatment of the present invention.
  • the "dull, firm and large three-dimensional curl” refers to hair that has been combed twice with a comb after being subjected to a hair deformation treatment according to the method described in the test example below.
  • the curl in which the minor axis of the curl is measured and compared with the radius of the rod used is a curl in which the minor axis of the curl is equal to or larger than the radius of the rod.
  • the hair deforming agent of the present invention comprises a first agent containing a reducing agent, an intermediate treatment agent for hair deforming treatment containing 5 to 15% by mass of disulfide, and a second agent containing an oxidizing agent.
  • the first agent, the intermediate treatment agent for hair deformation treatment, and the second agent are the same as those described above.
  • the hair deforming agent of the present invention contains these three agents as a set and can be used in the hair deforming treatment method of the present invention.
  • the reagents used in the following Examples and Comparative Examples were as follows. Ammonium thiolactate (Bruno Boc, 60%) Diammonium dithiodiglycolate (Sasaki Chemical Co., 40%) Sodium bromate (made by Sasaki Chemical Co., Ltd.) Sodium hydroxide (manufactured by Tokyo Ohka Kogyo Co., Ltd.) Ethanolamine (manufactured by BASF)
  • Test Example 1 Examination on the concentration of diammonium dithiodiglycolate 8.0 parts by mass of ammonium thiolactate (60%) (4.8 parts by mass as ammonium thiolactate) and 3.0 parts by mass of monoethanolamine were purified water 89.
  • the 1st agent was prepared by mixing with 0.0 mass part.
  • the second agent was prepared by mixing 7.0 parts by mass of sodium bromate and 93.0 parts by mass of purified water.
  • diammonium dithiodiglycolate (40%) with purified water so that the concentration of diammonium dithiodiglycolate is 1, 5, 10, 15 and 20% by mass, pH 5.5 or pH 5 is obtained.
  • An intermediate treatment agent for hair deformation treatment having each concentration of 0.6 was prepared.
  • the short diameter and thickness of the obtained hair were measured as follows. As shown in FIG. 1, two bundles of treated hairs were placed on their desks with their flat surfaces being superposed on each other. Regarding the thickness of the hair, the thickness (cm) of the hair was measured when viewed from the sideways direction of the superposed state, that is, the sideways direction of the photograph of FIG.
  • the short diameter of the hair is selected as one hair bundle in which a plurality of hairs are gathered into one, and is in a state as shown in FIG. 2 when viewed from directly above the desk, that is, when viewed directly from the front of FIG.
  • the lengths a1 to a3 of the three peaks from the end of were measured and the average value thereof was taken as the minor axis.
  • draw a tangent line L1 that touches the hair at the contact points P1 and P2 draw a straight line that has the longest length from the tangent line L1 to the second mountain. It was pulled out and its length a1 (cm) was measured.
  • the feel of the obtained hair was evaluated according to the following evaluation criteria.
  • Comparative Example 3 in which the concentration of diammonium dithiodiglycolate is 20% by mass, the minor axis and the thickness are greatly improved as compared with Comparative Example 1 of the control, but the minor axis is 1.14 cm, The radius was lower than 1.15 cm.
  • the concentration of diammonium dithiodiglycolate is preferably 5 to 15% by mass.
  • Examples 1 and 2 were evaluated as A, which was excellent. Therefore, when the feel evaluation is included, the concentration of diammonium dithiodiglycolate is more preferably 5 to 10% by mass.
  • Test Example 2 Examination on pH The first agent and the second agent prepared in Test Example 1 were used. In addition, by using the intermediate treatment agent for hair deformation treatment having a concentration of diammonium dithiodiglycolate of 10 mass% prepared in Test Example 1, the pH was adjusted to 5.5, 8 and 10 by adding sodium hydroxide. Was prepared.
  • Hair deformation treatment was carried out in the same manner as in Test Example 1 using the above-mentioned intermediate treatment agents for hair deformation treatment having pH of 5.5, 8 and 10.
  • the one not treated with the intermediate treatment agent for hair deformation treatment was used as a control (Comparative Example 1).
  • the minor axis and the thickness of the obtained hair were measured. The results are shown in Table 2.
  • the pH of the intermediate treatment agent for hair deformation treatment is in the range of 5.5 to 10
  • the minor axis is 1.43 to 1.57 cm
  • the radius of the rod is 1.15 cm or more.
  • the thickness is 3.86 to 4.04 cm
  • the minor axis and the thickness are greatly improved as compared with the control of Comparative Example 1.
  • Test Example 3 Examination regarding combination of concentration and pH of diammonium dithiodiglycolate The first agent and the second agent prepared in Test Example 1 were used.
  • the pH was adjusted to 5.5 and 8 in the same manner as in Test Example 4 to obtain 4
  • Various types of intermediate treatment agents for hair deformation treatment were prepared. Hair deformation treatment was performed in the same manner as in Test Example 1. In addition, the one not treated with the intermediate treatment agent for hair deformation treatment was used as a control (Comparative Example 1). The minor axis and the thickness of the obtained hair were measured. The results are shown in Table 3.
  • Test Example 4 Examination of treatment of shampoo and treatment Test using the first and second agents prepared in Test Example 1 and an intermediate treatment agent for hair deformation treatment having a concentration of diammonium dithiodiglycolate of 5% by mass. Hair deformation treatment was performed in the same manner as in Example 1 (Example 1). What was not treated with the intermediate treatment agent for hair deformation treatment was used as a control (Comparative Example 1). After that, the treatment of shampoo and treatment was performed once. Before the treatment of shampoo and treatment (0 times) and after the treatment of 1 time, the obtained hair was measured for minor axis and thickness. The results are shown in FIG. 3 and Table 4.
  • Example 1 Even after the treatment of shampoo and treatment was performed once, the minor axis was the rod radius of 1.15 cm or more, and a dull, firm and large three-dimensional wave was generated. Retained
  • Test Example 5 Examination of Treatment Time of Intermediate Treatment Agent for Hair Deformation Treatment
  • First agent and second agent prepared in Test Example 1 and intermediate treatment agent for hair deformation treatment having a concentration of diammonium dithiodiglycolate of 5% by mass was used.
  • the hair deformation treatment was performed in the same manner as in Test Example 1 with the treatment time of the intermediate treatment agent for hair deformation treatment set to 1, 2, 5 and 10 minutes.
  • the minor axis and the thickness of the obtained hair were measured. The results are shown in Table 5.
  • the treatment time is preferably 2 minutes or longer, more preferably 5 minutes or longer.
  • Test Example 6 Examination of Concentration of Intermediate Treatment Agent for Hair Deformation Treatment and Treatment Time
  • the first agent and the second agent prepared in Test Example 1 were used.
  • an intermediate treatment agent for hair deformation treatment was prepared in which the concentration of diammonium dithiodiglycolate was 1, 3.5 and 5% by mass, and using them, the treatment time was 10, 3 respectively.
  • the hair deformation treatment was performed. The minor axis and the thickness of the obtained hair were measured. The results are shown in Table 6.
  • Comparative Example 6 treatment with 1% by mass of diammonium dithiodiglycolate for 10 minutes
  • Comparative Example 7 treatment with 3.5% by mass of diammonium dithiodiglycolate for 3 minutes
  • the diameters were 0.62 cm and 0.94 cm, far below the rod radius of 1.15 cm.
  • Example 13 treated with 5% by mass of diammonium dithiodiglycolate for 2 minutes
  • the minor axis was 1.40 cm
  • the radius of the rod was 1.15 cm or more
  • Comparative Examples 6 and 7 were used. In comparison with, it was very significantly higher, which resulted in the stable formation of a dull, firm and large three-dimensional wave.
  • the reaction rate increases in proportion to the concentration of the reaction reagent, and if the concentration of the reaction reagent does not change significantly, the reaction proceeds with the reaction time. Therefore, in the above test, in Comparative Example 6, Comparative Example 7, and Example 13, the product of the concentration of the intermediate treatment agent for hair deformation treatment and the treatment time was approximately equal to about 10, and if similar reactions proceed, those skilled in the art will appreciate. Expects. However, according to the above-mentioned test results, it was obtained that the one having a high concentration of the intermediate treatment agent for hair deformation treatment had a remarkably high short diameter and thickness despite the short treatment time. ..
  • the concentration of diammonium dithiodiglycolate is 5% by mass or more.
  • the experimental conditions of Comparative Example 6 (1% by mass of diammonium dithiodiglycolate for 10 minutes) correspond to the conditions of Example 1 of Patent Document 1.
  • the experimental conditions of Comparative Example 7 (3.5 mass% diammonium dithiodiglycolate, 3 minutes) correspond to the conditions of Example 18 of Patent Document 2.
  • the concentration of diammonium dithiodiglycolate is 5% by mass or more, the minor axis and the thickness are remarkably increased even if the treatment time is shortened. This effect cannot be predicted by those skilled in the art from Patent Documents 1 and 2.
  • Test Example 7 Examination of pH of Second Agent
  • the first agent prepared in Test Example 1 was used. Further, by mixing 6.0 parts by mass of sodium bromate and 94.0 parts by mass of purified water and adding sodium hydroxide, a second agent having a pH of 6, 8, 8.5, 10, and 12 is prepared. did.
  • a hair deformation treatment was carried out in the same manner as in Test Example 1 without treatment with the intermediate treatment agent for hair deformation treatment. The short diameter, thickness and feel of the obtained hair were measured. The results are shown in Table 7.
  • the intermediate treatment agent for hair deformation treatment, a dull, firm and large three-dimensional wave is stably formed, but in addition to that, the oxidizing agent is bromate, and pH is By using the second agent having a ratio of 8 or more, a firm, large, and three-dimensional wave can be stably formed.
  • the present invention provides an intermediate treatment agent for hair deformation treatment, a hair deformation treatment method, and a hair deformation agent, which are capable of stably forming a firm, large and three-dimensional wave that is dull.

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PCT/JP2019/042305 2018-10-30 2019-10-29 毛髪変形処理用中間処理剤、毛髪変形処理方法及び毛髪変形剤 WO2020090793A1 (ja)

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JP7185812B2 (ja) 2020-01-07 2022-12-08 サムイン ケミカル カンパニー，リミテッド 染色専用トリートメント組成物

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