JP2000226318A - Hair cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a hair cosmetic which is not greasy, gives strong setting power and permits rehairdressing readily by hands or the like by including a specific polymer for fixing hair and a specific polyoxyalkylene alkyl ether. SOLUTION: This hair cosmetic is obtained by including (A) 0.1-10 wt.% of a polymer for fixing hair (e.g. an acrylic resin alkanolamine neutralizer or the like) with the solubility of more than 50 wt.% to LPG of which the solubility to LPG is provided by initially finding the amount of LPG necessary to produce by means of adding LPG (2.5 kgf/cm2) into 10 g of 10 wt.% ethanolic solution of the polymer for fixing hair and then defining the solubility as the following equation: Solubility (%)=[amount (g) of added LPG]/[10 g+amount (g) of added LPG]x 100 and (B) a polyoxyalkylene alkyl ether of the formula: R1O-(C2H4O)m-(C3H6O)n-R2 [R1 is a 1-20C aliphatic hydrocarbon group; R2 is H, a 1-20C aliphatic hydrocarbon group or phosphoric acid residue; (m) is 0-10; (n) is 10-35; (m)+(n)<=35].

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair cosmetic composition which has a strong setting force, has no oiliness, and can be reshaped.

[0002]

2. Description of the Related Art When a carboxyvinyl polymer or a polyalkyl (meth) acrylate and a polyoxyalkylene alkyl ether are blended in addition to a hair fixing polymer, a hair styling agent capable of reshaping the hair without using water or the like is obtained. (Japanese Patent Application Laid-Open No. 9-301838)
issue).

[0003]

However, the hair styling agent containing the above three components has viscosity due to the carboxyvinyl polymer or polyalkyl (meth) acrylate compounding, and the agent does not spread throughout the hair at the time of application. For example, there is a disadvantage that the performance is not sufficient.

[0004]

Means for Solving the Problems The present inventor has found that the combination of a hair fixing polymer having high solubility in LPG and a polyoxyalkylene alkyl ether having a polyoxyalkylene number equal to or less than a certain value is used. It has been found that a hair styling agent having a setting power and a hair re-shaping ability and having a low oiliness can be obtained without blending the components.

That is, the present invention relates to (a) LPG added to 10 g of a 10% ethanol solution of a hair fixing polymer compound.
(2.5 kgf / cm ² ) was added to determine the amount of LPG required to cause cloudiness, and the following formula (1)

[0006]

(Equation 2)

The solubility in LPG defined by the above is 50%
0.1 to 10% by weight of the above-mentioned polymer compound for fixing hair, and (b) the formula (2)

[0008]

Embedded image

(Wherein, R ¹ represents an aliphatic hydrocarbon group having 1 to 20 carbon atoms, R ² represents a hydrogen atom, an aliphatic hydrocarbon group having 1 to 20 carbon atoms or a phosphoric acid residue, and m represents 0 A number of 10 to 10, n represents a number of 10 to 35, and m + n is 35 or less)
A hair cosmetic containing a polyoxyalkylene alkyl ether represented by the formula:

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The polymer (a) for fixing hair used in the present invention is LPG defined by the above formula (1).
(Liquefied petroleum gas) has a solubility of 50% or more,
Necessary from the viewpoint of set strength. As such a component (a), an acrylic resin alkanolamine neutralized product, a (meth) acrylamide / alkyl (meth) acrylate / (meth) acrylate having a tertiary amino group or a tertiary amino group ( (Meth) acrylamide
Methoxy polyethylene glycol (meth) acrylate copolymer (for example, described in JP-A-2-180911)
Or, among acrylamide / alkyl acrylate / methoxypolyethylene glycol methacrylate copolymer,
Those satisfying the above-mentioned solubility are preferred. Commercially available components (a) include Plus Size L-9540B (manufactured by Ryo Kagaku).

The amount of the component (a) to be added to the hair cosmetic composition of the present invention is 0.1 to 10% by weight (hereinafter simply referred to as%) in view of the balance between the setting power, the oiliness and the re-styling property. ), Particularly preferably 0.3 to 2%.

In the formula (2) representing the component (b), R ¹ is preferably an alkyl group, more preferably an alkyl group having 2 to 10 carbon atoms. R ² is preferably a hydrogen atom, an alkyl group (particularly an alkyl group having 2 to 10 carbon atoms), or a phosphoric acid residue. Further, m is preferably from 0 to 5, and n is from 15 to 30.
Is preferred. m + n is important from the viewpoint of reducing the oiliness of hair cosmetics, and is preferably 35 or less. Component (b)
Examples are Parlon EP-70 (manufactured by Ryo Kagaku Co., Ltd.), New Pole LB-385, New Pole 50HB-40.
0, commercially available products such as Newpole 50HB-660 (manufactured by Sanyo Chemical Industries, Ltd.).

The component (b) is used in an amount of 1 to 20 with respect to the component (a) in the hair cosmetic composition of the present invention in view of a strong setting force and a hair restoring ability.
It is preferable to mix by weight, especially 8 to 15 times by weight.

The hair cosmetic composition of the present invention comprises, in addition to the above components,
Solvents such as lower alcohols such as ethanol, polyols and water; oils such as hydrocarbons, ester oils and silicones;
Feel enhancer, fragrance, pigment, antioxidant, ultraviolet absorber,
A heat care agent, a plant extract or the like can be blended.

The hair cosmetic of the present invention can be a cosmetic for the purpose of hair styling, such as a hair spray, a set foam, a set lotion, a hair liquid and the like. In order to form a hair spray, a set foam or the like, it is preferable to use a commonly used propellant, for example, LPG.

[0016]

EXAMPLES Examples 1 and 2 and Comparative Examples 1 to 10 Hair liquids were prepared according to the formulations shown in Table 1, and were used by 10 expert panelists. The strength of setting power and the low oiliness. And whether the hair could be reshaped. These evaluations were performed in five steps according to the following criteria, the obtained evaluation points were averaged, and the average value was classified into the following three steps. The results are shown in Table 1. In addition, L of the polymer compound for fixing hair
The solubility in PG was determined as described above.

[Evaluation Criteria of Strength of Set Force, Low Oiliness and Re-Hairability] 5: Excellent. 4: Excellent. 3: Somewhat excellent. 2: Not very good. 1: Not good. [Three-step evaluation] ：: Average value of 3.5 or more Δ: Average value of 2.0 to less than 3.5 ×: Average value of less than 2.0

[0018]

[Table 1]

According to Table 1, 0.1 to 10% of a polymer for fixing hair having a LPG solubility of 50% or more and a polyoxyalkylene alkyl ether having a polyoxyalkylene number (PO) of 3.5 or less were blended. It can be seen that the hair cosmetic composition of the present invention satisfies all of the setting power, oiliness, and re-shaping ability as compared with the case where components that do not satisfy these requirements are blended.

Example 3 (Hair Liquid)

[0021]

[Table 2]

Example 4 (Hair spray)

[0023]

[Table 3]

[0024]

According to the hair cosmetic composition of the present invention, it is not greasy, a strong setting force can be obtained, and the hair can be easily reshaped by hand or the like.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Atsushi Utsu 2-1-3 Bunka, Sumida-ku, Tokyo F-term in Kao Corporation Research Laboratories 4C083 AB032 AB052 AC012 AC101 AC102 AC122 AC181 AC182 AC901 AC902 AD011 AD051 AD052 AD091 AD092 AD131 AD132 AD162 BB53 CC32 DD08 DD23 EE06 EE07 EE28

Claims (3)

[Claims] (1) 10% of a polymer compound for fixing hair
LPG (2.5 kgf / cm ² ) was added to 10 g of the ethanol solution to determine the amount of LPG required to cause cloudiness, and the following formula (1) was obtained. 0.1 to 10% by weight of a hair fixing polymer compound having a solubility in LPG of 50% or more as defined in (b), and (b)
Formula (2) (Wherein, R ¹ represents an aliphatic hydrocarbon group having 1 to 20 carbon atoms,
R ² represents a hydrogen atom, an aliphatic hydrocarbon group having 1 to 20 carbon atoms or a phosphoric acid residue, m represents a number of 0 to 10, n represents a number of 10 to 35, and m + n is 35 or less. A hair cosmetic containing a polyoxyalkylene alkyl ether represented by the formula: 2. The content of the component (b) is 1% of the component (a).
The hair cosmetic according to claim 1, which is 20 to 20 times by weight. 3. Component (a) has a neutralized acrylic resin alkanolamine, a (meth) acrylic acid ester having a (meth) acrylamide / alkyl (meth) acrylate / tertiary amino group or a tertiary amino group. The hair cosmetic according to claim 1 or 2, which is a copolymer of (meth) acrylamide / methoxypolyethylene glycol (meth) acrylate or a copolymer of acrylamide / alkyl acrylate / methoxypolyethylene glycol methacrylate.