JPH0645526B2 - Hair-rinse composition - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a hair rinse agent, and more particularly, bis (2-alkyl-N-hydroxyethylimidazoline).
The present invention relates to a hair rinse composition containing a chloroacetic acid complex-type amphoteric active agent and a tertiary amidoamine and having an excellent hair conditioning effect.

(Prior art) Washing hair with a shampoo containing an anionic surfactant as a main component to remove dirt on the hair removes dirt on the hair and oil that protects the hair surface at the same time, resulting in loss of flexibility of the hair. The hair becomes dull, dull, and poorly combed, and hair damage, split ends, and broken hair are more likely to occur.

For the purpose of preventing these adverse effects, a hair rinse agent containing a quaternary ammonium salt which is a cationic surfactant as an active ingredient is used.

The hair rinse agent is intended to impart a conditioning effect (softness, moisturization, smoothness, combability) to hair, but a quaternary ammonium salt alone is sufficient for softness and smoothness. Can not be obtained. Therefore, it has been proposed to add oils and fats such as higher alcohols, glycerides and liquid paraffin to conventional hair rinse agents in order to improve these drawbacks.

However, none of these methods have been satisfactory yet, and particularly, the smoothness of hair and the combability are insufficient.

DISCLOSURE OF THE INVENTION In such a situation, the present inventor has earnestly studied for the purpose of obtaining a hair rinse agent having an excellent hair conditioning effect, and as a result, bis (2-alkyl-N-hydroxyethylimidazoline) chlor The inventors have found that a hair rinse agent containing an acetic acid complex-type amphoteric surfactant and a tertiary amidoamine as essential components in specific amounts, respectively, can achieve the above object, and completed the present invention.

(Object of the Invention) That is, the object of the present invention is to provide excellent hair conditioning effects (softness, moisturizing feeling, smoothness, combability).
To provide a hair rinse agent having

(Structure of the Invention) The present invention provides (A) bis (2-alkyl-N-hydroxyethylimidazoline) chloroacetic acid complex-type amphoteric surfactant (provided that
An alkyl group is a long chain having 11 to 21 carbon atoms), and (B) a general formula [In the formula, R ₁ represents a long-chain alkyl group having 11 to 17 carbon atoms, and R ₂ and R ₃ represent an alkyl group having 1 to ₃ carbon atoms. ] It is a hair rinse agent composition containing the tertiary amido amine represented by these.

(Specific Description of Structure) Bis (2-alkyl-N-hydroxyethylimidazoline) chloroacetic acid complex type amphoteric surfactant (wherein the alkyl group has a carbon number of 11 to 21) which is the component (A) of the present invention. Chain) is a known substance.

For example, bis (lauryl-N-hydroxyethylimidazoline) chloroacetic acid complex, bis (myristyl-N-hydroxyethylimidazoline) chloroacetic acid complex, bis (palmityl-N-hydroxyethylimidazoline) chloroacetic acid complex, bis (stearyl-N-) Hydroxyethylimidazoline) chloroacetic acid complex, bis (behenyl-N-hydroxyethylimidazoline) chloroacetic acid complex and the like can be mentioned, and particularly preferred is bis (stearyl-N-
Hydroxyethyl imidazoline) chloroacetic acid complex.

In the hair rinse composition of the present invention, one or a mixture of two or more of these amphoteric surfactants is generally 0.5 to 6% by weight, based on the total amount (hereinafter abbreviated as wt%). ) Preferably, 1.0 to 4 wt% is blended. If the amount is less than 0.5% by weight, the hair conditioning effect tends to be insufficient, and if it exceeds 6% by weight, the hair tends to become sticky.

The tertiary amidoamine which is the component (B) of the present invention is a known substance and has the following general formula: [Wherein R ₁ represents a long-chain alkyl group having 11 to 17 carbon atoms,
R ₂ and R ₃ represent an alkyl group having 1 to ₃ carbon atoms. ] Is represented.

Examples thereof include lauric acid dimethylaminoethylamide, myristic acid diethylaminoethylamide, stearic acid dimethylaminopropylamide, stearic acid diethylaminoethylamide, and the like, and particularly preferred is stearic acid diethylaminoethylamide.

The hair rinsing agent of the present invention generally contains 0.1 to 2 wt%, preferably 0.3 to 1 wt% of one or a mixture of two or more of these tertiary amidoamines based on the total amount. If the blending amount is less than 0.1 wt%, the hair conditioning effect tends to be insufficient, and 2 wt%
If it exceeds%, the hair tends to become sticky.

The hair rinse composition of the present invention comprises the above-mentioned two components as essential constituent components, and the blending weight ratio of these two components (A) and (B) is (A) :( B) = 2: 1 to 6: 1 is preferred. Further, in the composition, in the range for achieving the object of the present invention,
Other components can be appropriately mixed.

That is, hydrocarbons such as liquid paraffin, petrolatum and squalane, ester oils such as isopropyl myristate and isopropyl palmitate, vegetable oils such as camellia oil, olive oil and avocado oil, polyglycerin fatty acid esters, polyoxyethylene fatty acid esters, polyoxyethylene Nonionic surfactants such as sorbitan monolaurate, cellulose derivatives such as methyl cellulose, hydroxyethyl cellulose, cationized cellulose, moisturizers such as ethylene glycol, propylene glycol and glycerin, polypeptides, other fungicides, antidandruff agents, chelates. Agent,
An ultraviolet absorber, a colorant, a fragrance, etc. are mentioned, and these 1 type, or 2 or more types can be mix | blended.

(Examples) Next, the present invention will be described with reference to examples, but the present invention is not limited to these examples.

The test method used in this example is as follows.

(1) Hair conditioning effect "Hair flexibility", "Hair moisturization" in each example,
"Smoothness of hair" and "combability" were sensory compared by 20 female professional panelists and evaluated according to the following criteria.

◎; When the number of people who answered good is 18 or more ○: When 〃 is 14 to 17 △: When 〃 is 8 to 13 ×: When 〃 is 7 or less Examples 1 to 3 and Comparative Example 1-2 A hair rinse agent having the composition shown in Table 1 was prepared by a usual method, and the effect of each essential component was investigated. The results are shown in the lower part of Table 1.

Examples 4 to 7 and Comparative Examples 3 to 4 A hair rinse agent having a blending composition shown in Table 2 was prepared by a usual method, and the effect of each essential component was investigated. The results are shown in the lower row of Table 2.

(Characteristics) As is clear from Examples 1 to 7, the hair rinse composition of the present invention exhibits excellent performance.

On the other hand, bis (2-alkyl-N-) which is an essential component
Hydroxyethyl imidazoline) chloroacetic acid complex type amphoteric surfactant or tertiary amidoamine alone (Comparative Examples 1 to 1)
4), etc. all show inferior performance, and the object of the present invention cannot be achieved.

(Effects of the Invention) As described above, it is apparent that the present invention provides a useful hair rinse composition having excellent hair conditioning effects (softness, moist feeling, smoothness, combability).

Claims (1)

[Claims] 1. (A) Bis (2-alkyl-N-hydroxyethylimidazoline) chloroacetic acid complex type amphoteric surfactant (wherein the alkyl group is a long chain having 11 to 21 carbon atoms).
And (B) general formula [In the formula, R ₁ represents a long-chain alkyl group having 11 to 17 carbon atoms, and R ₂ and R ₃ represent an alkyl group having 1 to ₃ carbon atoms. ] The tertiary rinse amine composition represented by these, The hair rinse agent composition characterized by the above-mentioned.