JPS62270513A - Hair-treatment composition - Google Patents

Abstract

PURPOSE:To obtain a hair-treatment composition effective in preventing reddening and breakage of hair by sun-light and having high stability on human body, by compounding a specific amide amine compound and urocanic acid at specific ratios. CONSTITUTION:A hair-treatment composition such as hair rinse, hair-treatment, hair-conditioner, hair-blow, hair mousse, etc., is compounded with (A) an amide amine compound of formula (R1 is 16-24C higher fatty acid residue; R2 and R3 are 1-4C alkyl; l is 2, 3 or 4) and (B) urocanic acid. The amount of the component A is 0.1-20(wt)%, preferably 0.3-10% and that of the component B is 0.01-15%, preferably 0.1-5%. The equivalent ratio A/B is usually 2:1-1:2, preferably 1:(1.0-1.3). The titled composition produced by this process has, in addition to the above effects, the resistance to browning and separation of the composition by air, heat, light, etc., during storage and rinsing effect on hair.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to hair treatment compositions.

[Conventional technology]

Conventional hair treatment compositions include those comprising amidoamine and an organic acid such as lactic acid.

[Problem that the invention seeks to solve]

However, this product tends to cause hair redness and hair breakage due to sunlight. If ultraviolet absorbers such as p-aminobenzoic acid derivatives and salicylic acid derivatives are used to solve this problem, safety for the human body becomes a problem when used in large quantities.

[Means for solving problems]

The present inventors have arrived at the present invention as a result of intensive research to obtain a hair treatment composition that prevents hair redness and hair breakage caused by sunlight and is highly safe for the human body.

The present invention is based on the general formula (s where R1 is a residue of a higher fatty acid having 16 to 24 carbon atoms, R1 and R3 are an alkyl group having 1 to 4 carbon atoms, and e is an integer of 2 to 4). 0.1 to 20% by weight of the amidoamine compound (a) represented by and urocanic acid (b)
This is a hair treatment composition (hereinafter abbreviated as the composition of the present invention) characterized by containing 0.01 to 15 weight J1% of.

Urocanic acid according to the present invention is described in Merck & Co., Inc., 9th edition (published by MERCK & CO, Inc.) and Chemistry Dictionary I, reduced edition (published by Kyoritsu Shuppan in January 1968). Commercially available products can also be used.

In the general formula (1) representing the amidoamine compound (a), the higher fatty acids having 16 to 24 carbon atoms in R1 include straight chain fatty acids (palmitic acid, stearic acid, behenic acid, oleic acid, etc.) and branched fatty acids (isopalmitic acid, etc.). , isostearic acid, isobhenic acid, lanolin fatty acids, etc.). Preferred are straight chain fatty acids, particularly preferred are stearic acid and behenic acid.

Examples of the alkyl group having 1 to 4 carbon atoms for R21R3 include methyl group, ethyl group, propyl group and butyl group,
Preferred are methyl and ethyl groups.

Specific examples of the amidoamine compound represented by the general formula (1) include compounds in which each symbol in the general formula (1) is shown in Table 1.

Table 1 In the composition of the present invention, the content of amidoamine compound (a) and urocanic acid (b) is 0.1 to 20%, preferably 0.8 to 20% (a) based on the weight of the composition. l
O%, (b) is 0.01-15%, preferably 0.1-15%
It is 5%.

When (a) is 0.1%, the rinsing effect is poor and it is not actually necessary to add more than 20%. If (b) is less than 0.01%, the ultraviolet absorption effect will not be sufficient, and if it exceeds 16%, the stability of the composition over time will deteriorate.

The equivalent ratio of (a) and (b) is usually 2:1 to 1:2.

Preferably it is 1:1.0-1:1.8. (
When the equivalent of a) is larger than the equivalent of (b), low molecular weight aliphatic carboxylic acids (acetic acid, lactic acid, citric acid, etc.), inorganic acids (hydrochloric acid, sulfuric acid, phosphoric acid, etc.), alkyl aromatic sulfonic acids (toluene, etc.) Common acids such as sulfonic acid, dodecylbenzenesulfonic acid, etc.), aromatic carboxylic acids (benzoic acid, etc.) can be added.

In addition to (a) and (b), the composition of the present invention includes a cationic surfactant (distearyldimethylammonium chloride, behenyltrimethylammonium chloride, etc.), a nonionic surfactant ( Polyoxyethylene oleyl ether, stearic acid monoglyceride, etc.)% Amphoteric surfactants (stearyldimethylaminoacetic acid betaine, coconut oil fatty acid main dobropyldimethylaminoacetic acid betaine, lauryl dimethylamine oxide), oil bases (cetanol, behenyl alcohol, liquid paraffin, polyoxypropylene butyl ether, etc.)% humectants (sodium pyrrolidone carboxylate,
(such as polyethylene glycol), smoothing agents (dimethylpolysiloxane, etc.), lower alcohols (ethanol, propylene glycol, nail glycerin, etc.), propellants, fragrances,
Ingredients such as colorants, preservatives, and water can be added.

The composition of the present invention can be used as a hair treatment composition such as a hair rinse, a hair IJ-tonment, a hair conditioner, and a hair blow 1 hair mousse.

The pH of a 1% aqueous solution of the composition of the present invention is usually 8.0 to 8.
．． 0, preferably 4.0 to 7.0. p
If H8.0 is exceeded, the rinsing effect will be insufficient. When necessary, pH adjustment can be carried out using ordinary alkalis (caustic soda, triethanolamine, etc.) or acids (hydrochloric acid, citric acid, etc.).

The composition of the present invention may be in the form of liquid, paste, solid, powder, mousse, spray, etc., but liquid, mousse, and paste are preferred because they are easy to use. In the case of liquid, mousse and paste hair treatment compositions 1 usually (a) and (b)
total of 0.2 to 10%, nonionic surfactant 0 to 6
%, oil base 0-10%, lower alcohols 2-4
0%, water is used 40-96%.

〔Example〕

The present invention will be further explained below with reference to Examples, but the present invention is not limited thereto.

Example 1 Hair rinse (unit %) A2 in Table 1
Compounds: 1.6 urocanic acid, 0.6 stearic acid monoglyceride: 0.6 cetanol
; 2 Glycerin; 8 Total 100 pH, 7,0 (Note 1) Example 2 Hair rinse (Unit: %) Compound A2 in Table 1; 1,6 Urocanic acid; 0.6 Stearic acid monoglyceride; 0.5 Setanol
; 2 Glycerin; 8 Water: Remaining amount
100 pH; 5.9 (Note 1) Example 8 Hair rinse (Unit: %) A2 in Table 1
Compound: 1.5 urocanic acid: 0.6 stearic acid monoglyceride; 0.5 cetanol
, 2 Glycerin; 8 Total 100 pH; 4.5 (Note 1) (Note 1) The pH was adjusted using lactic acid.

Example 4 Hair rinse (unit: %) Todoroki from Table 1
Compound: 1.5 urocanic acid; 0.7 stearic acid monoglyceride: 0.5 cetanol
; 2 Glycerin, 8 Water; Residual pH; 4.5 Comparative Example 1 Hair Rinse (Unit: %) A2 in Table 1
Compounds of: 1.5 lactic acid: 1.0 stearic acid monoglyceride; 0.5 cetanol;
2 Glycerin; 8 Total 100 pH; 4.3 Test Example 1 Using the hair rinses of Examples 1 to 4 and Comparative Example 1,
Its ultraviolet absorption effect was tested.

Evaluation method> Create an ultraviolet absorption curve of a 0.008% methanol solution of the hair treatment composition, and calculate its maximum absorption wavelength (λmax).
, extinction coefficient at Smax (E:9: rma tλma
x) and 1% 8Q Onm extinction coefficient (E 1cmat 800nm
) is measured.

Its ultraviolet absorption effect was determined.

Moreover, in terms of the extinction coefficient at 800 nm, it can be seen that it effectively blocks ultraviolet rays in the UV-B region in the neutral and weakly acidic regions.

Table 2 Test Example 2 Using the hair rinses of Examples 1 to 4, oral changes in hue and appearance at 50°C were tested. Table 8 shows the hue, and Table 4 shows the oral change in appearance.

Table 8 (50℃ incubator) (07 No coloring Δ: Wakachi coloring ×; Coloring) Table 4
(50°C incubator) (○: No change in appearance △: Slight separation ×: Minute II) Test Example 8 Using the hair rinses of Examples 1 to 4, the rinsing effect was tested. The test was conducted by a panel of five men and five men based on their impressions of use. As a result, the compositions of the present invention in Examples 1 to 4 were evaluated as having good rinsing effects on hair and being good on the skin.

Example 5 Hair blow (unit %) Compound /lL2 in Table 1: 0.6 urocanic acid
;0,2 Polyoxypropylene(ha)butyl ether ;2Ethanol :86 Water ;Remaining total
100 This hair blow gave an excellent texture to the hair after drying with a hair dryer and was gentle on the skin.

〔Effect of the invention〕

Unlike conventional compositions that use an organic acid such as lactic acid as a neutralizing salt of amidoamine, the composition of the present invention prevents hair redness and hair breakage caused by sunlight, and is a highly safe hair treatment for the human body. It is a composition for use.

In the composition of the present invention, urocanic acid contains a specific wavelength (28
It has the function of absorbing light rays (0 to 810 nm) and protecting hair. The advantage of urocanic acid is that, unlike conventional ultraviolet absorbers such as p-aminobenzoic acid derivatives and salicylic acid derivatives, urocanic acid is a member of NMF that exists naturally and in the human body, and is an amino acid that is safe for the human body. It also has advantages in terms of blending amount.

Further, the composition of the present invention is free from browning or separation due to air, heat, light, etc. during storage, and further,
Since it uses amidoamine as shown by general formula (1), it also has a hair rinsing effect.

Claims (1)

[Claims] 1. General formula ▲ Numerical formula, chemical formula, table, etc. ▼ (1) (In the formula, R_1 is a residue of a higher fatty acid having 16 to 24 carbon atoms, and R_2 and R_3 are residues of a higher fatty acid having 1 carbon number. ~4 alkyl groups,
l is an integer from 2 to 4. ) of 0.1 to 20% by weight of amidoamine compound (a) and urocanic acid (
A hair treatment composition containing 0.01 to 15% by weight of b).