JP2002363043A - Second agent for permanent wave - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a second agent for permanent wave, capable of forming a flexible, tight and large but not too stiff wave having clear three-dimensional effects. SOLUTION: This second agent for the permanent wave is obtained by formulating a diethyl sulfate salt of a copolymer of vinylpyrrolidone and N,N- dimethylaminoethyl methacrylate, and a copolymer of dimethyldiallylammonium chloride and acrylamide.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a second agent for permanent wave.

[0002]

2. Description of the Prior Art In permanent wave technology, it is relatively easy to apply small waves firmly, but it is difficult to apply beautiful large waves firmly.

[0003] That is, if a rod having a large diameter is used to obtain a large wave, the wave will not be "firm" but will drop. In addition, there is also a problem that even when a clear wave appears when wet (when excess moisture is removed with a towel after washing the hair), the wave may drop when dry (when drying by natural drying). .

[0004] In order to solve such a problem, it is ideal to apply a large wave that is supple, sharp and three-dimensional, and various permanent wave agents have been proposed to date to achieve this. Was.

[0005] Here, the second agent for permanent waving re-bonds the cystine bond once cut by the first agent, fixes the rod as it is in the curve, and restores the hair to its original elasticity. However, if the reconstitution of the cystine bond is insufficient, a firm wave cannot be realized, and if the second agent acts excessively, the second agent is stiff and the texture is deteriorated.

[0006]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, that is, it is possible to form a firm, large wave that is not fragile, supple, and has a clear and three-dimensional effect. It is intended to provide a second agent for permanent waves.

[0007]

In order to solve the above-mentioned problems, the second agent for permanent wave of the present invention has a vinylpyrrolidone / N, N-dimethylaminoethyl methacrylic acid copolymer diethyl as described in claim 1. It is a second agent for permanent wave, which contains a sulfate and a dimethyldiallylammonium chloride-acrylamide copolymer.

[0008] With such a configuration, it is large and
It can give a firm wave with a clear and three-dimensional effect to the hair, and at that time, it can finish the hair with suppleness and suppleness.

In the second agent for permanent wave of the present invention, by blending the aminoethylaminopropylsiloxane / dimethylsiloxane copolymer as described in claim 2, it is possible to obtain a more supple and non-rigid texture. It becomes possible.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION In the second agent for permanent waving of the present invention, vinylpyrrolidone / N, N-dimethylaminoethyl methacrylic acid copolymer diethyl sulfate is a cationic polymer compound widely used in hair styling agents. Gives the hair unity and elasticity, and gives a clear, solid and large wave. It is desirable that the compounding amount be in the range of 0.01% by weight or more and 20% by weight or less. When the amount is less than 0.01% by weight, the effect is hardly exhibited, and when the amount is more than 20% by weight, the effect improvement accompanying the increase in the amount of addition is saturated, and the texture of the finish tends to be rough. Note that a more preferable range of the compounding amount is 0.1% by weight or more and 5% by weight or less.
Incidentally, vinylpyrrolidone / N, N-dimethylaminoethyl methacrylic acid copolymer diethyl sulfate is available as an aqueous solution from Osaka Organic Chemical Industry Co., Ltd. or the like.

On the other hand, dimethyldiallylammonium chloride / acrylamide copolymer is a cationic polymer compound capable of imparting a supple texture to hair, and its compounding amount is in the range of 0.01 to 20% by weight. It is desirable that If the compounding amount is less than 0.01% by weight, the effect is hardly exhibited, while, on the other hand, 20% by weight
If the amount is too large, the effect improvement accompanying the increase in the amount of addition is saturated, and the wave tends to be weak. Note that a more preferable range of the compounding amount is 0.1% by weight or more and 5% by weight or less. The dimethyldiallylammonium chloride / acrylamide copolymer is available as an aqueous solution from Calgon or the like.

The second agent for permanent wave of the present invention is a vinylpyrrolidone / N, N-dimethylaminoethyl methacrylic acid copolymer diethyl sulfate and a dimethyldiallylammonium chloride / acrylamide copolymer, and aminoethylaminopropylsiloxane. A greater effect can be obtained by having a dimethylsiloxane copolymer.

That is, the aminoethylaminopropylsiloxane / dimethylsiloxane copolymer forms a hydrophobic film on the surface of the hair and enhances combability and slippage by a conditioning action on the hair. In particular, the conditioning effect on damaged hair is high. The amount is 0.0
It is desirable that the content be in the range of 1% by weight to 20% by weight. If the amount is less than 0.01% by weight, the effect of addition is less likely to be exhibited, while if it is more than 20% by weight, the increase in effect with an increase in the amount of addition is saturated and the wave tends to be weak. Note that a more preferable range of the compounding amount is 0.1% by weight or more and 5% by weight or less. The aminoethylaminopropylsiloxane / dimethylsiloxane copolymer is available as a cationic emulsion from Dow Corning Toray Co., Ltd. or the like.

The second agent for permanent wave according to the present invention is a vinylpyrrolidone / N, N-dimethylaminoethyl methacrylic acid copolymer diethyl sulfate, a dimethyldiallylammonium chloride / acrylamide copolymer, or an aminoethylaminopropylsiloxane. In addition to the dimethylsiloxane copolymer, a second permanent wave
Agents contained in the agent, namely oxidizing agents (potassium bromate, sodium bromate, sodium perborate, hydrogen peroxide), pH adjusters, swelling agents, penetrants, thickeners, fats and oils,
Wetting agents, anti-inflammatory agents, conditioning agents, surfactants (high or low molecular surfactants such as cationic, anionic, amphoteric or nonionic), protein hydrolysates, amino acids, hair restorers, preservatives , A sequestering agent, a fragrance, a coloring matter, water and the like are appropriately added. The amount of the oxidizing agent is usually 1% by weight or more and 20% by weight or less, preferably 1.5% by weight or more and 10% by weight.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The second embodiment of the present invention for a permanent wave is described below.
The agent will be specifically described. Using the agents shown in Table 1, 12 kinds of second agents for permanent waves having the formulations (weight ratio, converted to pure amount) shown in Tables 2 and 3 were prepared.

[0016]

[Table 1]

[0017]

[Table 2]

[0018]

[Table 3]

These 12 kinds of second agents for permanent wave were evaluated. A hair bundle (20 hairs, 250 m length) was used as a sample of hair that had not been chemically treated.
m) is evenly wound around a rod (rod diameter: 15 mm, 23 mm or 26 mm), and a perm agent 1st agent having the composition (value in a pure amount) shown in Table 4 is applied uniformly, and then the container is placed at room temperature in a container. It was sealed and left to stand. After a lapse of 15 minutes, take out from the container and wash with water, apply the above-mentioned second agent of the perm agent uniformly, and leave at room temperature for 10 minutes. After that, wash it further with water, carefully remove the hair from the rod,
The value was measured.

[0020]

[Table 4]

The SP value is a measure of "a sharp wave having a clear and three-dimensional effect". When the hair subjected to the waving treatment is hung with the hair root side up, as shown in FIG. When the cycle length of the second cycle from the end is 2y (the length between the peak and the valley is y) and the difference (width) between the peak and the valley is x, it can be obtained by the following equation (1).

[0022]

## EQU1 ## SP value = x / y × 100 (1)

When the SP value is 50 or more, the impression as a wave having a very sharp and three-dimensional effect is obtained. When the SP value is 45 or more and less than 50, the impression as a wave with a slightly sharp and three-dimensional effect is obtained. When it is less than 40, an impression as a wave is obtained, and when it is less than 40, an impression as a wave is obtained. Therefore, these were evaluated as ◎, △, Δ and ×, respectively.

Further, the W / D difference was also evaluated. W /
The D difference is a measure of whether a firm wave is maintained until after drying, and is an SP value in a dry state (a state after natural drying) and an SP value in a wet state (a state in which excess water is wiped off with a towel after washing). It is obtained from the value by the following equation (2).

[0025]

W / D difference = SP value in dry condition / SP value in wet condition × 100 (2)

When the W / D difference is 90 or more, the difference in the impression of the dry wave when wet is extremely small. Because there is a little difference, "○", 7
If the value is 0 or more and less than 80, the difference in the impression of the wet wave when dry is slightly large, so "△". If the value is less than 70, the difference in the impression of the wet wave when dry is quite large. × ”.

Further, the texture was also evaluated. This was evaluated by actually feeling the feel of the hair by touch, and was evaluated as “◎” when it was supple and smooth and very good, “○” when it was good, “△” when it was slightly bad, and “×” when it was clearly bad. The evaluation results are shown in Tables 2 and 3.

According to Tables 2 and 3, the second agent for permanent wave of the present invention can give a firm wave even when a rod having a large diameter is used, and these waves can be reliably retained even after drying. And
It can be seen that a good texture is obtained.

[0029]

EFFECTS OF THE INVENTION The second agent for permanent wave of the present invention can provide a large and firm wave with a clear and three-dimensional effect, and furthermore, the waves are securely held even after drying, and have no stiffness. It is an excellent second agent for permanent wave, which gives a good texture.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram for obtaining an SP value.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shoyo Kuze 2-1-1, Higashishinsaibashi, Chuo-ku, Osaka-shi, Osaka Inside Takara Labelmont Co., Ltd. (72) Hiroshi Hosokawa 2-chome, Higashishinsaibashi, Chuo-ku, Osaka-shi, Osaka No. 1-1 F-term in Takara Labelmont Co., Ltd. (reference) 3B038 FA07 4C083 AB282 AB332 AD042 AD091 AD092 AD131 AD132 AD151 AD152 CC34 EE06 EE25

Claims (2)

[Claims] 1. A second agent for permanent wave comprising a mixture of vinylpyrrolidone / N, N-dimethylaminoethylmethacrylic acid copolymer diethyl sulfate and dimethyldiallylammonium chloride / acrylamide copolymer. 2. The second agent for permanent wave according to claim 1, which comprises an aminoethylaminopropylsiloxane / dimethylsiloxane copolymer.