JPS6267011A - Hair rinse composition - Google Patents

Abstract

PURPOSE:A hair rinse composition, containing a monoalkyl type quaternary ammonium salt type cationic surfactant and carboxylic acid salt type anionic surfactant in combination at a specific ratio and further a specific alcohol together and having good handleability and transparency. CONSTITUTION:A hair rinse composition containing one or two or more monoalkyl type quaternary ammonium salt type cationic surfactants expressed by the formula (R1 is alkyl or alkenyl; R2-R4 are methyl or ethyl; X is halogen or methylsulfate residue), e.g. 12C alkyltrimethylammonium chloride, and a carboxylic acid salt type anionic surfactant, e.g. potassium myristoylglutamate, within 2.5/7.5-4.5/5.5 or 5.5/4.5-8/2 molar ratio range of the former to the latter and further one or two or more alcohols consisting of ethanol, propylene glycol, dipropylene glycol and 1, 3-butylene glycol added thereto.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention comprises a monoalkyl type quaternary ammonium salt type cationic surfactant, a carboxylate type anionic surfactant and a specific alcohol. , relates to a hair rinse composition that is less irritating to the skin, has a suitable viscosity, is easy to handle during use, has excellent adhesion to the hair, and has good transparency.

[Conventional technology]

Hair rinses are commonly used for the purpose of imparting flexibility to washed hair, imparting smoothness and luster to the hair, improving the texture of the hair, and further making it easier to comb. Hair rinses are generally composed of a cationic surfactant, mainly a quaternary ammonium salt, and oils and hydrophilic nonionic surfactants, etc. Quaternary ammonium salt type cationic surfactants are generally recognized to be highly irritating to the skin. Conventionally, attempts have been made to alleviate this irritation by blending higher alcohols and the like, but at present, nothing satisfactory has been achieved. Further, higher alcohols are opaque because they are insoluble in water. Of course, a transparent hair rinse can be obtained by reducing the amount of higher alcohol or adding a large amount of hydrotrope or hydrophilic nonionic surfactant. However, in this case, there is concern that the stability of the viscosity-reducing ring will be adversely affected, and in terms of performance, the rinsing effect will be significantly reduced.

[Means for solving problems]

Therefore, the present inventors conducted extensive research to obtain a transparent hair rinse that has performance comparable to conventional opaque rinse agents, has an appropriate viscosity, is stable, and is less irritating to the skin. As a result, a composition obtained by combining a monoalkyl type quaternary ammonium salt type cationic surfactant and a carboxylate type anionic surfactant in a specific ratio, and further using a specific alcohol in addition to this, was found. It has been discovered that the present invention is a hair rinse composition that satisfies the above objectives.

Generally, when an anionic surfactant and a cationic surfactant coexist in an aqueous solution, complexes and noxes are formed in the crystal phase, the complex becomes a precipitate, and the aqueous solution becomes cloudy or separates. That is, a quaternary ammonium salt type cationic surfactant may be used as a sulfonate type such as a higher alkyl sulfonate, a sulfate ester salt type such as a higher alcohol sulfate ester salt, or a phosphoric acid ester salt such as a polyoxyethylene alkyl ether phosphate ester salt. When mixed with an anionic surfactant such as an acid ester salt type in an aqueous solution, a complex is formed in the crystal phase at any molar ratio, and the complex becomes a precipitate that becomes cloudy or separates when dissolved in water. The combination of an alkyl-type quaternary ammonium salt-type cationic surfactant and a carboxylate-type anionic surfactant is particularly important when they coexist in a specific molar ratio in an aqueous solution, not in the crystal phase but in the solution. form a complex. This complex is transparent, provides an excellent rinsing effect, and is less irritating to the skin. However, this complex has a narrow transparent temperature range and has elasticity that is not viscous and has no fluidity, so although it has the above advantages, it is difficult to handle when used and does not blend well with hair. As a result of further intensive research, the present inventors found that by adding specific alcohols to this composition, it was possible to create a composition without sacrificing the advantages of transparency, rinsing effect, and skin safety. The present invention was completed based on the discovery that fluidity is imparted to the composition, handling during use and adhesion to the hair are improved, and the transparent temperature range is widened.

(Hereinafter referred to as J] White) That is, the present invention is based on (A) general formula (wherein R1 is an alkyl group or alkenyl group having 12 to 22 carbon atoms, R2, R3 and R4 are methyl or ethyl groups, and X is a halogen atom) or a methyl sulfate residue);
B) a carboxylate type anionic surfactant, and (C) Ela 1 Nor, propylene glycol, dipropylene glycol, l.

It contains one or more types of alcohols consisting of 3-butylene glycol, and the molar ratio of (A)/(B) is 2.5/7.5 to 4.515.5 or 5.5/
4.5 to 8/2.

The quaternary ammonium salt type cationic surfactant (A) used as a component of the composition of the present invention has the general formula: R4 is a methyl group or an ethyl group, and X is a halogen atom or a methyl sulfate residue. If a quaternary ammonium salt type cationic surfactant such as a dialkyl type is used instead of a monoalkyl type, crystals will precipitate and the desired composition will not be obtained.

(Hereafter, all white) The carboxylate type anionic surfactant (B) used as a component of the composition of the present invention has, for example, the following: 1) General formula (wherein R is an alkyl group having 8 to 18 carbon atoms or alkenyl group, M represents one or more types of alkali, organic amines, and basic amino acids) ii) General formula % Formula % (In the formula, R is the number of carbon atoms Ether carboxylate type anion represented by an alkyl group or alkylaryl group of 8 to 22, n is O or an integer of 1 to 16, M represents an alkali metal organic amine, or one or more basic amino acids. Surfactant, iii) General formula %Formula % (wherein R represents an alkyl group or alkenyl group having 8 to 18 carbon atoms, and M represents one or more types of an alkali combination, an organic amine, and a basic amino acid. ) N-acyl sarcosine salt type anionic surfactant or 1v) general formula % formula % (wherein R is an alkyl group or alkenyl group having 8 to 18 carbon atoms, M is an alkali full concentration, an organic amine, a base Examples include anionic surfactants having the general formula %, which are represented by condensates of higher fatty acids and amino acids, such as N-acylglutamic acid salts (representing one or more types of amino acids).

In the present invention, one or more of these may be used.

The molar ratio of (A')/(B) is 2.5/7.5 to 4.
515.5 and 5.5/4.5 to 8/2, preferably the molar ratio (A)/(B) is 3/7 to 4/
6 and ranges from 6/4 to 7/3.

In this composition, if the above molar ratio is less than 2.5/7.5 or more than 8/2, no complex will be formed, resulting in poor rinsing effect and strong irritation to the skin R5. If the blending amount is more than /6 and less than 6/4, the monoalkyl quaternary ammonium salt type cationic surfactant and the carboxylic acid salt type surfactant form a complex in the crystal phase, so that it is uniformly mixed. This is not desirable because it does not become transparent.

The total amount of (A) + (B) is 0.5 to 20% by weight, preferably 1 to 15% by weight, based on the total amount of the composition. If the amount is less than 0.5% by weight, sufficient rinsing effect cannot be obtained due to insufficient surfactant, and 20tl
ii! If the blending amount exceeds %, the complex will take on a liquid crystal structure and its transparency will be poor, which is not preferable.

The alcohol used as a component of the composition of the present invention is one or more of ethanol, propylene glycol, dipropylene glycol, and 1,3-butylene glycol.

Other alcohols, such as glycerin commonly used in hair rinses, form monoalkyl quaternary ammonium salt type cationic surfactants and carboxylate type anionic surfactants regardless of the amount added. It is not possible to add fluidity to the elasticity of the complex.

The blending amount of the above alcohols is 1 to 20% by weight,
Preferably it is 5 to 15 m1%. If the amount is less than 1%, fluidity cannot be imparted to the elasticity of the complex, and if the amount is more than 20% by weight, the stability will deteriorate, which is not preferred.

In producing the hair rinse composition of the present invention, the desired composition can be obtained without any order in which the surfactants and alcohols are added.

In addition to the above-mentioned essential ingredients, the hair rinse composition of the present invention can also contain ingredients and additives commonly used in hair rinses. That is, oils such as higher alcohols, silicone oils, liquid halafin, and ester oils, water-soluble polymers such as methyl cellulose and hydroxyethyl cellulose, and nonionic interfaces such as polyoxyethylene (hereinafter referred to as POE) hydrogenated castor oil and POE alkyl ethers. Active agents: Ampholytic surfactants such as 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium hetaine and trialkylaminoacetic acid hetaine, natural extracts of animals and plants and their derivatives, organic acids such as citric acid and lactic acid,
chloride) Inorganic salts such as IJum, potassium chloride, fragrances,
Coloring agents, preservatives, chelating agents, ultraviolet absorbers, etc. may be added as appropriate within the range that does not impair the effects of the present invention.

〔Example〕

Next, the present invention will be explained in more detail with reference to Examples. The present invention is not limited thereby.

The effects were measured using the following test methods and evaluation methods.

Test method, evaluation methodill Rinse effect and ease of blending into hair, ease of handling during use Rinse effect is "smoothness", "gloss", "combability"
12g of sample was collected by 15 female panelists for each of the following three items.
After applying it directly to your hair and rinsing it with warm water,
It was air-dried and evaluated by sensory evaluation. The ease of adhesion to hair and ease of handling during use were evaluated based on the ease of adhesion to hair and ease of handling during use when applied to hair using the same panel and the same sample.

Evaluation was performed on a four-level scale. If it is extremely good, it is marked ◎, if it is good, it is marked ○, if it is fair, it is marked △, and if it is poor, it is marked ×.

(2) Skin irritation It is known that skin irritation can be evaluated by the strength of protein denaturation (protein denaturation rate) of surfactants and surfactant compositions (Japanese Patent Publication No. 59-42038),
The skin irritation of the composition of the present invention was evaluated based on the protein denaturation rate based on this evaluation method.

Protein denaturation rate Using aqueous high performance liquid chromatography, the ovalbumin denaturation rate was determined to be 220nn when a sample was added to the ovalbumin PI-170 solvent at a sample concentration of 1%.
Measurement was performed using the + absorption peak.

Ho: Height of the 220 rum absorption peak of ovalbumin.

H8: 22 when sample was added to ovalbumin buffered solvent
0 Hidden absorption peak height.

Evaluation was performed using the following four-level evaluation.

◎・・・・・・Very little skin irritation ・Egg white albumin denaturation rate less than 30% O ・・・・・・Less skin irritation ・Egg white albumin denaturation rate 30% or more and less than 60% △・・・・・・... Moderate skin irritation - Ovalbumin denaturation rate of 60% or more and less than 80% × ... Strong skin irritation - Ovalbumin denaturation rate of 80% or more Hair rinse composition comprising the formulation described in the examples prepare things,
The rinsing effect and condition are shown in Table 1, and the skin irritation and condition are shown in Table 2 along with comparative examples. Examples in which additives and the like were added are also described.

(Left below) Example IO A hair rinse composition having the following composition was prepared and evaluated in the same manner as in Examples 1 to 9.

(Weight %) C18 alkyltrimethylammonium 4.52 Chloride (average molecular weight 348) Sodium lauroylalanine 2.16 (average molecular weight 307) Ethanol 3.0 Polyoxyethylene (average 40 mol) 2.0 Hardened mustard oil derivative oleyl alcohol 0.2 coloring agents, fragrances, ion exchange water
Remains: This hair rinse composition had an excellent rinsing effect, was less irritating to the skin, had viscosity, was easy to handle during use, and was transparent with excellent blending into the hair.

(Hereinafter, all white) Example 11 A hair rinse composition having the following composition was prepared and evaluated in the same manner as in Examples 1 to 1O.

(Weight %) C2゜Alkenyltrimethylammonyl 2.81 Muchloride (average molecular weight ffi 402) Sodium lauroyl sarcosine 0.93 (average molecular weight 310) Dipropylene glycol 8 Aloe extract 0.5 Coloring agent, fragrance
Commercial preservative, chelating agent
Appropriate amount of ion-exchanged water Remainder This hair rinse composition had an excellent rinsing effect, was less irritating to the skin, had viscosity, was easy to handle during use, and was transparent with excellent blending into the hair.

〔Effect of the invention〕

The hair rinse composition of the present invention has an excellent rinsing effect, is less irritating to the skin, has an appropriate viscosity, is easy to handle during use, does not stain the hair, and has good transparency. be.

Patent applicant: Shiseido Co., Ltd. Voluntary amendment to the procedure) May 2, 1986? Michibe Uga, Commissioner of the Japanese Patent Office, Patent Application No. 205998, filed in 1985, 2, Title of the invention: Hair rinse composition 3, Relationship with the case of the person making the amendment. Column 5, Contents of amendment (1) The text "sodium laurate" in the first line of page 17 of the specification will be corrected to "potassium laurate."

that's all

Claims (1)

[Claims] (A) General formula ▲ Numerical formula, chemical formula, table, etc. ▼ (In the formula, R_1 is an alkyl group or alkenyl group having 12 to 22 carbon atoms, R_2, R_3 and R_4 are methyl or ethyl groups, X represents a halogen atom or a methyl sulfate residue.) one or more monoalkyl quaternary ammonium salt type cationic surfactants; (B) a carboxylate type anionic surfactant; (
C) Contains one or more alcohols consisting of ethanol, propylene glycol, dipropylene glycol, and 1,3-butylene glycol; (A)
/(B) molar ratio of 2.5/7.5 to 4.5/5.
5 or 5.5/4.5 to 8/2.