JPH06172139A - Keratinous fiber modifying agent - Google Patents

Abstract

PURPOSE:To obtain a keratinous fiber modifying agent capable of effectively and durably providing keratinous fiber with tension and rigidity, extremely improving hair style retention even under a high-humidity condition. CONSTITUTION:A modifying agent for keratinous fiber such as hair or wool comprises a polyvalent metal salt or hydroxide and a 4-8C monoalcohol.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keratin fiber modifier, and more particularly to a keratin fiber modifier which imparts firmness and elasticity to keratin fibers such as hair and wool quickly and effectively. Is.

[0002]

2. Description of the Related Art Conventionally used methods for modifying keratinous fibers such as hair and wool to give them firmness and elasticity are, for example, (1) adsorbing a polymer added to a perm agent or the like on the hair surface. Method (JP-A-52-7449, JP-A-58-2161)
No. 13), (2) a method using an astringent (JP-A-55-108812,
No. 58-109405, No. 60-87208), (3) a method of filling a protein hydrolyzate into the hair, and (4) a method of forming an insoluble salt in the hair (JP-A-1-233208). Etc. are known.

[0003]

However, these reforming methods have some problems. That is, in the methods (1) to (3), since the amount of the drug adsorbed on the hair or the like was small, the modifying effect was small and the effect was poor in sustainability. Although the modification effect of the method (4) is more than that of the methods (1) to (3), it is still insufficient, and a long treatment time is required to obtain the effect. Further, when the hair was treated by this method, the hair became stiff, dry, and the like, which was unsatisfactory to the touch. Therefore, there has been a demand for the development of a modifier which is capable of rapidly imparting sufficient firmness and elasticity to keratinous fibers such as hair under mild conditions and is excellent in terms of durability and feel.

[0004]

[Means for Solving the Problems] In view of such a situation,
As a result of intensive studies to solve the above-mentioned problems, the present inventors have treated keratinous fibers with a modifier containing a salt or hydroxide of a polyvalent metal and a specific monoalcohol to give keratin. The present inventors have found that it is possible to impart firmness and elasticity to the quality fiber rapidly, effectively and continuously, and also has an excellent feeling after treatment, and completed the present invention. That is, the present invention is
It is intended to provide a keratinous fiber modifier containing a salt or hydroxide of a polyvalent metal and a monoalcohol having 4 to 8 carbon atoms.

The polyvalent metal salt or hydroxide used in the present invention includes magnesium, calcium, barium,
Chlorides such as iron (II), manganese, zinc, nickel, aluminum, lanthanum and iron (III), nitrates, sulfates, acetates, phosphates, hydroxides, etc. may be mentioned, and a mixture thereof may be used. . Of these, salts of magnesium, calcium, barium and lanthanum, particularly chlorides and sulfates are preferable. The content of the polyvalent metal salt or hydroxide in the modifier of the present invention is preferably 0.01 to 3 mol / liter,
0.2 to 1.5 mol / liter is preferable.

The monoalcohol having 4 to 8 carbon atoms used in the present invention includes 1-butanol, 2-butanol,
tert-butanol, 1-pentanol and its isomers,
1-hexanol and its isomers, 1-heptanol and its isomers, 1-octanol and its isomers. Of these, butanol and pentanol are particularly preferable. The amount of the monoalcohol having 4 to 8 carbon atoms in the modifier of the present invention is preferably 0.05 to 20% by weight, and 1 to 10
Weight percent is particularly preferred.

The keratinous fiber modifier of the present invention may appropriately contain, in addition to the above-mentioned essential components, components usually used in hair cosmetics. The keratinous fiber modifier of the present invention can be used in the form of a pre-shampoo agent, shampoo, hair conditioner, hair conditioner, hair treatment, set lotion, blow styling lotion, hair cream, permanent wave agent, hair dye and the like.

The method for treating keratinous fibers such as hair and wool with the modifying agent of the present invention is not particularly limited, but for example, a salt or hydroxide of a polyvalent metal, and a monovalent compound having 4 to 8 carbon atoms. A method in which an aqueous solution containing alcohol is applied to the keratinous fiber or the keratinous fiber is immersed in the aqueous solution and left as it is for 5 minutes or more, particularly 5 to 40 minutes at 30 to 50 ° C. and then washed is preferable. By such a method, the effect of the present invention can be more remarkably exhibited.

[0009]

ACTION AND EFFECTS OF THE INVENTION Although the mechanism of action of the modifier of the present invention is not completely clear, the presence of a monoalcohol having 4 to 8 carbon atoms at the same time as a salt or hydroxide of a polyvalent metal, The permeation rate and amount of salts or hydroxides of polyvalent metals into the keratinous fiber can be remarkably increased, and as a result, the elasticity and durability of the keratinous fiber can be remarkably improved in a short treatment time. It is thought to be done. Therefore, the modifier of the present invention can effectively give firmness and elasticity to keratinous fibers such as hair in a short time, and remarkably improve the retention of hairstyle even under high humidity.

[0010]

EXAMPLES Next, the present invention will be described with reference to examples.
The invention is not limited by these examples. In the examples,% is based on weight unless otherwise specified.

Examples 1 and 2 and Comparative Examples 1 to 3 Hair which has not undergone chemical treatment such as permanent wave or hair dye is first dipped in the modifier shown in Table 1 at 40 ° C. for 15 minutes, and then ion-exchanged water is used. After washing, it was dried and the tensile elasticity was measured under a relative humidity of 50%. The rate of change in tensile elasticity of each treated hair after the treatment with the modifier was determined by the following formula, with the tensile elasticity before treatment with the modifier being 1.0, which was already measured by the same method. The results are shown in Table 1. However, 10 hair for each treatment
The elasticity of the book was measured and the average value was used. Rate of change in tensile elasticity = (tensile elastic modulus after treatment) / (tensile elastic modulus before treatment)

[0012]

[Table 1]

As can be seen from Table 1, the modifiers of Examples 1 and 2 of the present invention significantly improve the elasticity of hair.

Example 3 and Comparative Examples 4 to 6 A bundle of 10 g of hair not chemically treated with permanent wave, hair dye, etc. was moistened with water and then treated with a modifier shown in Table 2 at 30 ° C. for 20 minutes. After soaking, thoroughly rinsing with tap water and drying, the results of sensory evaluation of firmness and elasticity by 10 people on the hair are shown in Table 3.

[0015]

[Table 2]

[0016]

[Table 3]

As is clear from Table 3, the modifier of the present invention of Example 3 imparts excellent firmness and elasticity to the hair in terms of feel.

Example 4 and Comparative Examples 7 to 8 Hair which has not undergone chemical treatment such as permanent wave or hair dye is first dipped in the modifier shown in Table 4 at 50 ° C. for 20 minutes and washed with ion-exchanged water. Tensile elasticity was measured at 50% relative humidity, dried. The tensile elasticity before treatment, which was already measured by the same method, was set to 1.0, and the tensile elasticity change rate of each treated hair after the treatment with the modifier was determined in the same manner as in Example 1. The results are shown in Table 4. However, the elasticity of 10 hairs was measured for each treatment and the average value was used.

[0019]

[Table 4]

As is apparent from Table 4, the modifier of the present invention of Example 4 significantly improves the elasticity of hair.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location 7199-3B D06M 11/04 C 13/16

Claims (1)

[Claims] 1. A keratinous fiber modifier containing a salt or hydroxide of a polyvalent metal and a monoalcohol having 4 to 8 carbon atoms.