JP2000273025A - Treating agent for softening hair and cold wave treating agent containing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject treating agent for softening hair capable of providing hair with an extremely excellent softening effect, exerting no bad influence on performances of the wave treating agent at all, having excellent stability when added to a permanent cold wave treating agent by making the subject treating agent include specific ammonium salts. SOLUTION: This treating agent comprises (A) a quaternary ammonium salt of formula I (R1 is a 14-22C alkyl or hydroxyalkyl; X is a halogen or a 1-2C alkylsulfate group; m+n is 2-5) and (B) a quaternary ammonium salt of formula II (R2 and R3 are each a 8-13C alkyl or hydroxyalkyl; Y is a halogen or a 1-2C alkylsulfate). Preferably the treating agent comprises 0.1-15 wt.% of the component A and 0.01-5 wt.% of the component B in the formulating ratio of the component A to the component B of 3:1 to 5:1 by weight. The treating agent is added to a solution comprising a reducing agent and/or an alkali agent as a main component to give a useful cold wave treating agent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a treatment agent used for permanent treatment for forming hair into a wave using a chemical, and more particularly to a hair softening treatment agent added to a permanent treatment or a chemical used for treatment. Related.

[0002]

2. Description of the Related Art Conventionally, in order to treat hair and form a wave for a certain period of time so as to form a coherent shape as a whole, a method of permanently treating the entire hair has been generally used. Specific techniques for permanent treatment include, for example, a method of forming a wave using electric heat (machine wave method), a method of forming a wave using a specific chemical solution (cold wave method), and the like. In particular, in recent years, the cold wave method using a chemical solution has become much more common in consideration of damage to hair and the like.

[0003] A chemical solution (hereinafter abbreviated as "perm agent") used for permanent treatment by the cold wave method must not damage the hair as much as possible and must not cause irritation or influence on the scalp. It must have no effect on the fingers.

As described above, the purpose of the permanent treatment is to form a wave on the hair and at the same time make it permanent,
It is necessary to wrap the hair around a rod or the like to form a desired wave shape, and then set the hair in that shape. That is, the deformation is left as a permanent wave.

A general method for performing the above-described permanent wave processing is based on the following method. That is, an artificial wave is formed while the cystine (SS) bond of the hair protein is cut with a reducing agent, and then the above-mentioned bond is repaired with an oxidizing agent to fix the artificial wave. Is the way. The chemical used here is mainly cystine (S
S) Composed of thioglycolic acid, which is a reducing agent capable of breaking a bond, and an oxidizing agent, capable of repairing the same. One permanent containing the former and two permanents containing the latter The mainstream is the two-bath method.

[0006] As the above-mentioned perm 1 agent, an aqueous solution of an oxidizing agent such as sodium bromate, hydrogen peroxide solution or the like is used as the perm 2 agent. Mainly used.
In addition, cysteines may be used as a main component of one permanent agent. In actual use, first, for example, a permanent agent is applied in a state in which hair is wound around a rod or the like, and left as it is for about 10 to 30 minutes.
Apply the agent and fix the wave in that state.

[0007] When a permanent wave is applied, the condition of the hair becomes hard, the amount of the hair is large, and when the hair is thicker than usual, the tendency is remarkable. May be unwieldy during care. In order to avoid such a condition, it is common for a hairdresser to judge the condition of an individual's hair, appropriately select and treat a perm treatment agent, and then treat it with a softener.

As the softening agent used in the above-mentioned method, a cationic surfactant is often used, but its main purpose is to prevent hair from being charged, improve glazing, improve slipperiness and the like. There is only a subordinate effect on imparting sex. Furthermore, this method has many individual differences. Under such circumstances, the development of a hair softening agent that can be used in any condition, and a permanent agent containing the hair softening agent has been awaited.

[0009]

SUMMARY OF THE INVENTION In view of the problems with the current cold wave processing method described above, the present inventors have
The present inventors have completed the present invention as a result of intensive studies on a method for softening hair after cold wave treatment, and an object thereof is a hair softening agent which can be used in any state. Another object of the present invention is to provide a cold wave treating agent containing the hair softening agent.

[0010]

The above-mentioned object is achieved by the general formula (1)

[0011]

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(Wherein, R ₁ represents an alkyl group having 14 to 22 carbon atoms or a hydroxyalkyl group; X represents a halogen atom or an alkyl sulfate group having 1 to 2 carbon atoms;
n is 2 to 5), one or more quaternary ammonium salts represented by the general formula (2)

[0013]

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Wherein R ₂ and R ₃ represent an alkyl group or a hydroxyalkyl group having 8 to 18 carbon atoms, and Y represents a halogen atom or an alkyl sulfate group having 1 to 2 carbon atoms. One or two quaternary ammonium salts
Achieved with a hair treatment agent containing more than one species. The above hair softening agent contains the quaternary ammonium salt represented by the general formula (1) in an amount of 0.1 to 15% by weight and the quaternary ammonium salt represented by the general formula (2) in an amount of 0.01 to 5% by weight. %, And the ratio of the quaternary ammonium salt represented by the general formula (1) to the quaternary ammonium salt represented by the general formula (2) is from 3: 1 to 5: 1 by weight ratio. Is preferably within the range. Further, another object of the present invention is achieved by a cold wave treating agent containing the above-mentioned hair treatment in a liquid mainly containing a reducing agent and / or an alkaline agent.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The essential point of the present invention is to use a quaternary ammonium salt which is a cationic surfactant as a hair softening treatment agent to be added to a conventional cold wave treatment agent. An object of the present invention is to obtain an excellent softening effect on hair and stability as a treatment liquid by using a mixture of quaternary ammonium salts of different types. The quaternary ammonium salt used here is first
Type, that is, the one represented by the general formula (1),
A quaternary ammonium salt comprising two moieties composed of polyoxyethylene molecules,
The second type, that is, the type represented by the above general formula (2), is a quaternary ammonium salt of a type not containing a polyoxyalkylene. By selecting and mixing one or more types from each type, the hair treatment agent of the present invention can be obtained.

In the quaternary ammonium salt represented by the general formula (1), R ₁ represents an alkyl group or a hydroxyalkyl group having 14 to 22 carbon atoms.
Preferably, it is 8 oleyl groups. X represents a halogen atom or an alkyl sulfate group having 1 to 2 carbon atoms, and a chlorine atom is particularly preferably used. Furthermore,
Containing two parts corresponding to polyoxyethylene molecules,
The numerical value indicating the repeating unit is in the range of m + n = 2-5. Specific examples of the quaternary ammonium salt of the general formula (1) include, for example, di (polyoxyethylene) oleylmethylammonium chloride.

Further, the fourth type represented by the aforementioned general formula (2)
In the quaternary ammonium salt, R ₂ and R ₃ represent an alkyl group having 8 to 18 carbon atoms or a hydroxyalkyl group. In addition, Y is a halogen atom or a carbon atom having 1 to 1
Although an alkyl sulfate group of 2 is shown, a chlorine atom is particularly preferably used. Specific examples of the quaternary ammonium salt of the general formula (2) include, for example, dicocoalkyldimethylammonium chloride. As used herein, dicocoalkyldimethylammonium chloride refers to a compound in which R ₂ and R ₃ in the general formula (2) are cocoalkyl groups extracted from coconut oil. Common coconut oil components include, in addition to lauric acid as the main component, caprylic acid, capric acid, myristic acid, palmitic acid, stearic acid, arachinic acid, hexadecenoic acid, oleic acid, linoleic acid, etc. The coconut alkyl group has about 12 or 14 carbon atoms.

The amount of the quaternary ammonium salt represented by the general formula (1) relative to the whole treating agent is 0.1 to 15% by weight, preferably 0.5 to 5% by weight, and the general formula (2)
Is 0.01 to 5% by weight, preferably 0.1 to 2% by weight, based on the whole treating agent.
% By weight. If the amount is less than this, the effect is not sufficient, and if it is more than this, the amount is excessive and adversely affects the performance as a cold wave treating agent. Further, the ratio of the quaternary ammonium salt represented by the general formula (1) to the quaternary ammonium salt represented by the general formula (2) is in the range of 3: 1 to 5: 1 by weight. It is preferable for achieving the purpose, and more preferably in the range of 3: 1 to 4: 1. Within this range, the stability as a solubilized emulsion is excellent, and at the same time, an excellent hair softening effect can be obtained when added to a cold wave treating agent.

Further, other additives can be added to the hair treatment composition according to the present invention, if necessary, as long as the intended purpose is not impaired. Specific examples include amino acids, polypeptides, amphoteric surfactants and the like. The hair softening agent described above can be included in the cold wave treating agent. The cold-wave treating agent referred to in the present invention is a liquid containing a reducing agent as a main component for breaking cystine (SS) bond of hair protein (one perm agent) and an oxidizing agent for re-binding it. It is a so-called two-part liquid composed of a liquid (two permanent agents) as a main component. The hair softening agent of the present invention is preferably contained in one of the above-mentioned permanent agents containing a reducing agent as a main component, but is contained in two of the permanent agents mainly containing an oxidizing agent. Is also good. Further, it may be contained in a one-part permanent agent.

The reducing agent which is the main component of the above-mentioned perm agent is not particularly limited, but particularly preferred are thioglycolic acid and its salts, cysteine and its salts, acetylcysteine, and sulfite. be able to. Furthermore, there is no particular limitation on the alkaline agent which is the main component of the above-mentioned one permanent agent, but particularly preferred are ammonia, monoethanolamine, triethanolamine, ammonium carbonate, ammonium bicarbonate, and 2-amino acid. -2-methyl-1.3-
Examples thereof include propanediol and 2-amino-2-methyl-1-propanol.

The hair softening agent and the cold wave agent containing the same according to the present invention will now be described in detail with reference to Examples, but the present invention is not limited thereto. In the examples described below, B values and B values used as indices of hair hardness and flexibility were used.
The S value was measured using a “hair stiffness tester” (KES-FB2-S type, manufactured by Kato Tech Co., Ltd.). That is, black straight hair of about 40 cm in length, which is a female adult hair with no history of chemical treatment, was used as a sample, and
It is immersed in a sodium lauryl sulfate solution at ５０50 ° C. for 10 minutes for washing, washed with running water, and air-dried. The 200 hair specimens are aligned to a width of 3.5 cm so that they do not overlap,
Hair length should be 3cm and both ends should be 1cm
The sample fixed with the tape of width is used as a test sample.
The test sample thus prepared is applied to the above-mentioned "hair stiffness tester" to measure the stress at the time of bending, and this value is defined as a B value (gf.cm ² / cm).
The B value is a numerical value indicating the bending hardness when one of the hairs is fixed and bent at a constant speed, and the larger the numerical value, the harder the hair. The B value of the untreated hair and the B value of the hair after the permanent cold wave treatment are measured, and a value obtained by subtracting the former value from the latter value is defined as a BS value. BS value (gf.cm ² / cm) = (B value after treatment) −
(Unprocessed B value)

[0022]

Example [Evaluation test of softening agent component for cold wave] As a permanent agent, a solution conforming to the quality standard for agent for permanent wave, that is, a 7% thioglycolic acid aqueous ammoniacal alkali aqueous solution was used as a softening agent component. Of various surfactants were added. The stability of the prepared perm agent was checked over time, and the emulsion was stable even after being left at room temperature for one year, and those which did not cause phenomena such as separation, precipitation, discoloration, etc. were evaluated as ○, and some change was observed. Those were evaluated as x. The hair to be a specimen was treated with one permanent agent prepared as described above at 30 ° C. for 10 minutes and then washed with water. Thereafter, the mixture was treated at 30 ° C. for 10 minutes using two permanent agents consisting of a 6% aqueous solution of sodium bromate, washed with water and dried. A sample obtained by repeating this operation five times was treated as a sample, and the B value was measured. The difference from the previously measured B value in the untreated state was determined, and the BS value was determined. A sensory test was conducted by 10 panelists on the actually treated hair samples, and the presence or absence of softening was confirmed in comparison with the hair sample that had not been added. Out of 10 panelists, 8 or more felt softening: ○ 4 or more and 7 or less felt softening: Δ 3 or less felt softening: ×.

Examples 1 to 4 and Comparative Examples 1 to 14 Hair softening agents were prepared according to the compositions shown in Tables 1 and 2 and added to one permanent agent prepared according to the above-mentioned evaluation test. Evaluation tests were conducted on the stability of the emulsion, the BS value of the treated hair, and the softness by panelists. The results are shown in Tables 1 and 2. As is evident from the results, the hair softening agent of the present invention had a low BS value and was evaluated as good in stability and softening feeling.

[0024]

[Table 1]

[0025]

[Table 2]

[0026]

As is evident from the results of the examples and comparative examples, the hair softening agent according to the present invention, when added to a permanent cold wave treating agent, gives a very good softening effect to hair. At the same time, the stability of the cold wave treating agent is very good without any adverse effect on the performance. According to the present invention, conventionally, a person with a lot of hair, a person with a thick hair and having a great care, a person with a hard hair, etc. can eliminate the hardness and stiffness felt after cold wave treatment, and give an extremely comfortable feeling. Now you can.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yasuhide Oishi 1-31-16 Horifune, Kita-ku, Tokyo Yamaei Chemical Co., Ltd. F-term (reference) in Sakae Chemical Co., Ltd. 4C083 AB081 AB082 AB311 AC541 AC581 AC691 AC692 AC771 AC772 BB53 CC34 EE05 EE06

Claims (5)

[Claims] 1. A compound of the general formula (1) (Wherein R ₁ represents an alkyl group having 14 to 22 carbon atoms or a hydroxyalkyl group, X represents a halogen atom or an alkyl sulfate group having 1 to 2 carbon atoms, and m + n is 2 to 5). One or more quaternary ammonium salts represented by the general formula (2): Wherein R ₂ and R ₃ represent an alkyl group or a hydroxyalkyl group having 8 to 18 carbon atoms, and Y represents a halogen atom or an alkyl sulfate group having 1 to 2 carbon atoms. A hair softening agent comprising one or more ammonium salts. 2. The hair softening agent according to claim 1, wherein the quaternary ammonium salt represented by the general formula (1) is 0.1 to 15% by weight, represented by the general formula (2). A quaternary ammonium salt comprising 0.01 to 5% by weight of a quaternary ammonium salt represented by the following general formula (1):
A hair softening agent characterized in that the weight ratio of the quaternary ammonium salt represented by the general formula (2) is in the range of 3: 1 to 5: 1. 3. A cold wave treating agent comprising the hair softening agent according to claim 2 in a liquid containing a reducing agent and / or an alkaline agent as a main component. 4. The method according to claim 1, wherein the reducing agent is thioglycolic acid or a salt thereof,
The cold wave treating agent according to claim 3, comprising at least one selected from the group consisting of cysteine and a salt thereof, acetyl cysteine, and sulfite. 5. The method according to claim 1, wherein the alkaline agent is ammonia, monoethanolamine, triethanolamine, ammonium carbonate, ammonium bicarbonate, 2-amino-2-methyl-1,3-.
The cold wave treating agent according to claim 3, wherein the agent is at least one selected from the group consisting of propanediol and 2-amino-2-methyl-1-propanol.