JP7103797B2 - Hair wash - Google Patents

Description

Regarding hair cleaning agents.

Patent Document 1 describes a hair cleanser that achieves both usability and appearance stability, and contains sugar and / or sugar alcohol, acylglutamic acid, betaines, cationized polymers, and the like as essential components. .. (See Patent Document 1)

Japanese Unexamined Patent Publication No. 2016-88934

However, even with the above-mentioned prior art, further improvement is required in terms of usability, particularly the texture of foam and the squeak at the time of rinsing. Therefore, it is an object of the present invention to provide a hair cleansing agent which has good foaming and foam texture, does not have a squeaky feeling at the time of rinsing, and has a moist feeling after rinsing.

A hair cleansing agent containing the following (A) to (D) is provided.
(A) Long-chain acyl acidic amino acid salt (B) Long-chain fatty acid amide propyl betaine (C) Polyoxyalkylene fatty acid alkanolamide (D) Cationic polymer

The hair cleansing agent of the present invention has good foaming and foam texture, does not have a squeaky feeling at the time of rinsing, and exhibits the effect of moisturizing after rinsing.

Hereinafter, embodiments for carrying out the present invention will be described.

The hair cleansing agent of the present invention contains (A) to (D).
(A) Long-chain acyl acidic amino acid salt (B) Long-chain fatty acid amide propyl betaine (C) Polyoxyalkylene fatty acid alkanolamide (D) Cationic polymer

The (A) long-chain acylated acidic amino acid salt to be blended in the hair cleaning agent of the present invention is a salt of an N-acylated derivative of an acidic amino acid. Examples of the acidic amino acid in the salt include acidic amino acids such as glutamic acid, aspartic acid, α-aminoadipic acid, cysteine acid and homocysteine acid, and may be any of L-form, D-form and DL-form. , L-form and DL-form are preferably used, and L-form is more preferably used.
For the purpose of the present invention, as the (A) N-acyl acidic amino acid salt, N-acylglutamate and N-acylaspartate are preferably used, and N-acylglutamate is more preferably used.

(A) As the acyl group in the N-acyl acidic amino acid salt, octanoyl, 6-methylheptanoyle (isooctanoyl), 2-ethylhexanoyl, decanoyl, dodecanoyl (lauroyl), tetradecanoyl (myristoyl), 12-methyltri. Decanoyl (isomiristoyl), hexadecanoyl (palmitoyle), 14-methylpentadecanoyl (isopalmitoyle), octadecanoyl (stearoyl), 16-methylheptadecanoyl (isostearoyl), eikosanoyl, docosanoyl, coconut oil fatty acid Linear or branched saturated acyl groups having about 8 to 22 carbon atoms such as acyls, octenoyl, 6-methylheptenoyl (isooctenoyl), decenoyl, dodecenoyl, tetradecenoyl, 9-hexadecenoyl (palmitreinoyl), 9-octadecenoyl ( Examples thereof include linear or branched unsaturated acyl groups having about 8 to 22 carbon atoms such as oleinoyl) and docosenoyl, and linear or branched saturated acyl groups having about 10 to 18 carbon atoms are preferable, and about 10 to 18 carbon atoms. Is more preferable, and a linear saturated acyl group having 10 to 14 carbon atoms is particularly preferable.

Examples of the salt of N-acyl acidic amino acid include alkali metal salts such as sodium salt and potassium salt; alkaline earth metal salts such as magnesium salt and calcium salt; ammonium salt; organic amine salt such as diethanolamine salt and triethanolamine salt; Examples thereof include basic amino acid salts such as lysine salt and arginine salt. From the viewpoint of availability and handleability, sodium salt, potassium salt and triethanolamine salt are preferable, and sodium salt and potassium salt are particularly preferable. ..

In the present invention, the N-acyl acidic amino acid salt has been conventionally used in a cleaning agent composition, and is, for example, sodium N-lauroyl aspartate, disodium N-lauroyl aspartate, N-lauroyl asparagine. Potassium acid, N-lauroyl aspartate triethanolamine, N-myristoyl aspartate sodium, N-myristoyl aspartate disodium, N-myristoyl aspartate potassium, N-myristoyl aspartate triethanolamine, N-lauroyl glutamate, N -Disodium lauroyl glutamate, potassium N-lauroyl glutamate, triethanolamine N-lauroyl glutamate, sodium N-myristoyl glutamate, disodium N-myristoyl glutamate, potassium N-myristoyl glutamate, triethanolamine N-myristoyl glutamate, N-palm Sodium oil fatty acid acyl aspartate, disodium N-palm oil fatty acid acyl aspartate, potassium N-palm oil fatty acid acyl aspartate, triethanolamine N-palm oil fatty acid acyl aspartate, sodium N-palm oil fatty acid acyl glutamate, N -Palm oil fatty acid disodium acylglutamate, N-coconut oil fatty acid potassium acylglutamate, N-palm oil fatty acid acylglutamate triethanolamine, etc., among others, N-lauroyl glutamate potassium, N-palm oil fatty acid potassium acylglutamate. Etc. are more preferably used.

In the present invention, the N-acyl acidic amino acid salt may be used alone or in combination of two or more.

The hair cleansing agent of the present invention contains (A) N-acyl acidic amino acid salt in an amount of usually 1 to 30% by mass, preferably 1% by mass to 20% by mass, based on the total amount of the composition. If the blending amount exceeds 30% by mass, the transparent appearance may not be maintained. If the composition is less than 1% by mass, the cleaning power may be insufficient.

The long-chain fatty acid amide propyl betaine (B) to be blended in the hair cleaning agent of the present invention is not particularly limited, and is, for example, lauramide propyl betaine, myristamide propyl betaine, stearamide propyl betaine, oleyl amide propyl betaine, and cocamide. Examples include propyl betaine. Among these, lauramidopropyl betaine or cocamidopropyl betaine is preferable, and lauramidopropyl betaine is more preferable.

The hair cleaning agent of the present invention contains (B) a long-chain fatty acid amide propyl betaine in an amount of usually 0.5 to 10% by mass, preferably 1% to 10% by mass, based on the total amount of the composition.

The (C) polyoxyalkylene fatty acid alkanolamide to be blended in the hair cleaning agent of the present invention is an addition polymerization of an oxide alkylene to a fatty acid alkanolamide which is a condensate of a fatty acid and an alkanolamine. The polyoxyalkylene fatty acid alkanolamide is not particularly limited as long as it is usually used in cosmetics and detergent compositions.

The alkylene of the "polyoxyalkylene" is not particularly limited, but for example, an alkylene having 2 to 4 carbon atoms is preferable, and specifically, polyoxyethylene, polyoxypropylene, polyoxybutylene and the like. Can be given. The average number of moles of polyoxyalkylene added is not particularly limited, but is preferably 0.1 to 20 moles.

The "fatty acid" is not particularly limited, but for example, one having 8 to 22 carbon atoms is preferable, and these may be one kind or a mixture of two or more kinds, and coconut oil fatty acid and the like are also used. be able to.

The "alkanolamine" is not particularly limited, but is preferably one having 2 to 4 carbon atoms, and specific examples thereof include monoisopropanolamine, monoethanolamine, and diethanolamine. The component (a) is obtained by combining these, and is preferably one or more selected from polyoxypropylene coconut oil fatty acid monoisopropanolamide and polyoxyethylene coconut oil fatty acid monoethanoamide. Further, polyoxyethylene coconut oil fatty acid monoethanoamide is preferable. The average number of moles of polyoxypropylene added is not particularly limited, and 0.3 to 20 mol of polyoxypropylene can be used per molecule, but 1 to 20 mol is preferable. Particularly preferably, polyoxyethylene coconut oil fatty acid monoethanoamide (cosmetic labeling name PEG-11 cocamide) having an average addition mole number of 11 is preferable.

In the hair cleansing agent of the present invention, one type of (C) polyoxyalkylene fatty acid alkanolamide may be used alone, or two or more types may be used in combination. The polyoxyalkylene fatty acid alkanolamide (C) is usually blended in an amount of 0.5 to 10% by mass, preferably 1% by mass to 10% by mass, based on the total amount of the composition. If the blending amount exceeds 10% by mass, it may cause stickiness. If the composition is less than 0.5% by mass, squeaks during rinsing may be annoying.

Examples of the (D) cationic polymer to be blended in the hair cleaning agent of the present invention include cationized hydroxyethyl cellulose, cationized guar gum, cationized locust bean gum, dimethyldiallyl chloride / acrylamide copolymer, and acrylamide / acrylic acid / dimethyl chloride. A diallyl ammonium copolymer can be mentioned as an example.

Among these, it is preferable to use polyquaternium-10 (cosmetic label name) of cationized hydroxyethyl cellulose.

As the cationic polymer (D), one type may be used alone, or two or more types may be used in combination, and 0.1 to 0.9 mass by mass with respect to the total amount of the hair cleaning agent of the present invention. % Is preferred. If the blending amount is less than 0.1% by mass or more than 0.9% by mass, it may affect finger passage during rinsing and softness of hair after drying.

The hair cleansing agent of the present invention can be made into a highly safe hair cleansing agent by adjusting the pH to an appropriate weak acidity of about 4.5 to 6.5. Examples of the pH adjusting agent for adjusting the pH to weak acidity include, but are not limited to, lactic acid, citric acid, phosphoric acid, malic acid, and salts thereof. The pH adjusters may be used alone or in combination of two or more.

The hair cleanser of the present invention exhibits a liquid or gel-like appearance at room temperature. From the viewpoint of usability, the viscosity is preferably 500 mPa · s or more. The viscosity can be measured using a B-type viscometer under 25 ° C. conditions using a rotor adjusted to an appropriate viscosity.

As the hair cleansing agent of the present invention, a polyoxyethylene alkyl glucoside dial chelate can be used. The polyoxyethylene alkyl glucoside dial chelate is not particularly limited as long as it can be blended in a hair cleansing agent. Among the polyoxyethylene alkyl glucoside dial chelates, it is preferable to use polyoxyethylene dioleate methyl glucoside.

In the hair cleaning agent of the present invention, in addition to the above-mentioned essential components and optional components, an aqueous component, an oily component, a moisturizing agent, a pigment, a surfactant, and ultraviolet absorption, which are usually blended in the hair cleaning agent as needed. Agents, thickeners, chemicals, fragrances, high molecular weight substances, antibacterial and antimicrobial agents, alcohols, biological components and the like can be appropriately blended.

Hereinafter, the present invention will be specifically described with reference to Examples, but the scope of the present invention is not limited thereto. The blending amount is mass% unless otherwise specified.

First, an evaluation method of the prepared hair cleansing agent will be described.

The pH was measured using HORIBA pH METER at 25 ° C. without dilution.

The viscosity was measured using a B-type viscometer rotor No. 2 under the conditions of 6 rpm and 60 seconds in an environment of 25 ° C.

[Bubbling, texture of foam]
Three sensory evaluation specialists actually used and evaluated each of foaming, foam quality, and foam breakage, and evaluated them as good "○", slightly good "△", and poor "×" by consensus.

[Squeak when rinsing]
In hair shampoo, three sensory evaluation specialists actually use each of the squeaks to evaluate the squeaky feeling of the hair in the shampoo. It was evaluated as "x".

[Moist feeling after use]
The feeling after use was evaluated by three sensory evaluation specialists who actually used it and evaluated it as "○" which is moist, "△" which is slightly moist, and "×" which is dry.

Shampoos were prepared and evaluated according to the formulations shown in Table 1.

As shown in Table 1, the hair shampoo of Example 1 had a good feeling of use, such as foaming, good foam texture, no squeaky feeling at the time of rinsing, and moisturizing after rinsing.

Claims (1)

A hair cleansing agent containing the following (A) to ( E ).
(A) Long-chain acyl acidic amino acid salt (B) Long-chain fatty acid amide propyl betaine (C) Polyoxyalkylene fatty acid alkanolamide (D) Cationic polymer
(E) Polyoxyethylene alkyl glucoside dialchelate