KR102539780B1 - hair wash composition - Google Patents

Abstract

(A) polyoxyethylene alkyl ether sulfate, (B) amphoteric surfactant, (C) N-acylamino acid ester, (D) polyoxyethylene hydrogenated castor oil having an average added mole number of ethylene oxide of 5 to 30, and (E) Content (mass %) of (C) N-acylamino acid esters and (D) polyoxyethylene hydrogenated castor oil having an average added mole number of ethylene oxide of 5 to 30, containing cationic polymers (mass %) A hair wash composition having a mass ratio (D/C) of 1 to 12.5 is provided.

Description

hair wash composition

The present invention relates to a hair wash composition.

As troubles of the scalp and hair accompanying aging, hair loss, fine hair, hair frizz, hair frizz, scalp hardening, scalp dryness, etc. are mentioned. In response to these problems, hair cosmetics that are excellent in damage improvement and repair effects and can improve the smoothness of the finish have been proposed (for example, see Patent Documents 1 to 3). However, no technology has been developed so far regarding the problem of hardening of the scalp and dryness of the scalp.

Therefore, it is desired to provide a hair cleanser composition that is excellent in foaming, fine foaming and smoothness of the hair during rinsing, can improve the flexibility of the scalp, and can increase the amount of moisture in the scalp.

Patent Document 1: Japanese Patent Laid-Open No. 2010-235507 Patent Document 2: Japanese Patent Laid-Open No. 2010-168310 Patent Document 3: Japanese Patent Laid-Open No. 2008-231346

The present invention solves the above problems in the prior art and makes it a subject to achieve the following objects. That is, an object of the present invention is to provide a hair wash composition capable of foaming well, having fine foam and excellent hair smoothness during rinsing, improving the flexibility of the scalp, and increasing the moisture content of the scalp. .

In order to solve the above problems, as a result of repeated studies by the present inventors, the average addition of (A) polyoxyethylene alkyl ether sulfate, (B) amphoteric surfactant, (C) N-acylamino acid ester, and (D) ethylene oxide Contains polyoxyethylene hydrogenated castor oil having a mole number of 5 to 30 and (E) cationic polymer, the content (mass %) of the above (C) N-acylamino acid ester and the average added mole number of the above (D) ethylene oxide A hair wash composition having a mass ratio (D/C) of 1 to 12.5 with the content (mass%) of polyoxyethylene hydrogenated castor oil of 5 to 30 foams well due to the synergistic effect of each component. It has been found that the hair is excellent in smoothness during fineness and rinsing, the flexibility of the scalp can be improved, and the moisture content of the scalp can be increased.

This invention is based on the said knowledge by this inventor, As a means for solving the said subject, it is as follows.

<1> (A) polyoxyethylene alkyl ether sulfate,

(B) an amphoteric surfactant;

(C) N-acylamino acid ester;

(D) polyoxyethylene hydrogenated castor oil having an average added mole number of ethylene oxide of 5 to 30 and (E) a cationic polymer;

Mass ratio (D/C) of the content (mass%) of the N-acylamino acid ester (C) and the content (mass%) of the polyoxyethylene hydrogenated castor oil having an average added mole number of ethylene oxide of 5 to 30 (D) ) is a hair wash composition characterized in that it is 1 to 12.5.

<2> The content of the (C) N-acylamino acid ester is 0.08% by mass to 1% by mass,

It is the hair wash composition as described in said <1> whose content of said (D) polyoxyethylene hydrogenated castor oil whose average added mole number of ethylene oxide is 5-30 is 0.1 mass % - 1 mass %.

<3> The content of the polyoxyethylene alkyl ether sulfate (A) is 12% by mass to 20% by mass, and the content of the cationic polymer (E) is 0.1% by mass to 1% by mass,

Mass ratio (D/C) of the content (mass%) of the N-acylamino acid ester (C) and the content (mass%) of the polyoxyethylene hydrogenated castor oil having an average added mole number of ethylene oxide of 5 to 30 (D) ) is the hair wash composition according to <1> or <2>, wherein 3 to 9 are present.

<4> The amphoteric surfactant (B) is at least one selected from alkylbetaine amphoteric surfactants, amide betaine amphoteric surfactants, and imidazolinium betaine amphoteric surfactants, and (B) amphoteric surfactant It is the hair wash composition in any one of said <1> to <3> whose content of is 1 mass % - 20 mass %.

According to the present invention, the above various problems in the prior art can be solved, and the above objects can be achieved, foaming is good, the foam is fine, and the hair is excellent in smoothness during rinsing, and the flexibility of the scalp can be improved. And, it is possible to provide a hair wash composition capable of increasing the moisture content of the scalp.

(Hair Cleaner Composition)

The hair washing composition of the present invention comprises (A) polyoxyethylene alkyl ether sulfate, (B) amphoteric surfactant, (C) N-acylamino acid ester, and (D) polyoxylate having an average added mole number of 5 to 30 ethylene oxide. It is made by containing ethylene hydrogenated castor oil and (E) a cationic polymer, and also contains other components as needed.

<(A) polyoxyethylene alkyl ether sulfate>

The polyoxyethylene alkyl ether sulfate, which is the component (A), is contained to improve foaming, fine foaming, hair smoothness when rinsing, scalp flexibility, and scalp moisture.

The number of carbon atoms in the alkyl group portion of the polyoxyethylene alkyl ether sulfate, which is the component (A), is preferably 10 to 24, and more preferably 12 to 14, from the viewpoint of foaming.

The average number of added moles of ethylene oxide in the polyoxyethylene alkyl ether sulfate of the component (A) (hereinafter sometimes referred to as "EO") is preferably 1 to 3, and 2 to 3 in view of good foaming. 3 is more preferable.

The salt of the polyoxyethylene alkyl ether sulfate, which is the component (A), is not particularly limited and can be appropriately selected according to the purpose, and examples thereof include alkali metal, ammonium, and alkanolamine. Among these, alkali metals and ammonium are preferred, sodium and ammonium are more preferred, and sodium is particularly preferred.

The polyoxyethylene alkyl ether sulfate of the component (A) is not particularly limited and can be selected appropriately according to the purpose, and examples thereof include compounds represented by the following general formula (a).

R ¹ O(CH ₂ CH ₂ O) _m SO ₃ M ¹ . . . Formula (a)

(However, in the general formula (a), R ¹ represents an alkyl group, M ¹ represents an alkali metal, ammonium or an alkanolamine, and m represents an integer of 1 to 3)

Examples of the polyoxyethylene alkyl ether sulfate of the component (A) include polyoxyethylene capryl ether sulfate (EO: 1 to 3), polyoxyethylene lauryl ether sulfate (EO: 1 to 3), polyoxyethylene capryl ether sulfate (EO: 1 to 3) Ethylene myristyl ether sulfate (EO: 1-3), polyoxyethylene palmityl ether sulfate (EO: 1-3), polyoxyethylene stearyl ether sulfate (EO: 1-3), etc. are mentioned. These may be used individually by 1 type, and may use 2 or more types together. Among these, from the viewpoint of good foaming and fine foaming, polyoxyethylene lauryl ether sulfate (EO: 1 to 3) is preferable, and polyoxyethylene lauryl ether ammonium sulfate (EO: 2) is more preferable. .

As the polyoxyethylene alkyl ether sulfate of the component (A), a commercially available product or an appropriately synthesized polyoxyethylene alkyl ether sulfate may be used. As said commercial item, for example, brand name: Emaru 70J (sodium polyoxyethylene lauryl ether sulfate (EO: 1), manufactured by Gao Co., Ltd.), trade name: Shinolin SPE-1250 (sodium polyoxyethylene lauryl ether sulfate (EO: 1) 2), Nihon Nippon Chemical Co., Ltd.), trade name: Teikapol NE1270 (Polyoxyethylene Lauryl Ether Ammonium Sulfate (EO: 3), Teika Co., Ltd.), and the like. These may be used individually by 1 type, and may use 2 or more types together. Among these, from the viewpoint of good foaming and fine foaming, brand name: Shinorin SPE-1250 (polyoxyethylene lauryl ether sodium sulfate (EO: 2), manufactured by Shinnippon Riwha Co., Ltd.) is preferable.

As the content of polyoxyethylene alkyl ether sulfate as the component (A), in terms of foaming, fine foaming, hair smoothness at the time of rinsing, flexibility of the scalp and moisture content of the scalp, relative to the total amount of the hair wash composition, 5 mass % - 25 mass % are preferable, and 12 mass % - 20 mass % are more preferable. If the content is less than 5% by mass, foaming and fineness of the foam may become insufficient, and if it exceeds 25% by mass, hair smoothness, flexibility of the scalp and moisture content of the scalp may be insufficient during rinsing. There is something going on. Moreover, since the coacervate with (E) component is not formed when (A) component is not contained, the smoothness of hair at the time of a rinse becomes inadequate.

<(B) amphoteric surfactant>

The amphoteric surfactant, which is the component (B), is contained in order to improve foaming, flexibility of the scalp, and moisture content of the scalp.

The amphoteric surfactant as the component (B) is not particularly limited and can be appropriately selected according to the purpose, and examples thereof include betaine amphoteric surfactants, aminopropionic acid amphoteric surfactants, and amino acid amphoteric surfactants. there is. These may be used individually by 1 type, and may use 2 or more types together. Among these, a betaine type amphoteric surfactant is preferable.

Examples of the betaine amphoteric surfactant include alkylbetaine amphoteric surfactants, amide betaine amphoteric surfactants, sulfobetaine amphoteric surfactants, phosphobetaine surfactants, imidazolinium betaine amphoteric surfactants, etc. can be heard These may be used individually by 1 type, and may use 2 or more types together. Among these, from the viewpoint of foaming, an alkylbetaine amphoteric surfactant, an amidebetaine amphoteric surfactant, and an imidazoliniumbetaine amphoteric surfactant are preferred, and an amidebetaine amphoteric surfactant is more preferred.

Examples of the alkylbetaine-based amphoteric surfactant include alkyldimethylaminoacetic acid betaine. Examples of the alkyldimethylaminoacetic acid betaine include lauryldimethylaminoacetic acid betaine, myristyldimethylaminoacetic acid betaine, and stearyldimethylaminoacetic acid betaine. These may be used individually by 1 type, and may use 2 or more types together. Among these, lauryl dimethylaminoacetic acid betaine is preferable.

As said amidobetaine type amphoteric surfactant, the alkylamide propyl betaine etc. are mentioned, for example. Examples of the alkyl amide propyl betaine include coconut oil fatty acid amide propyl betaine (cocamide propyl betaine), lauric acid amide propyl betaine, and isostearamido propyl betaine. These may be used individually by 1 type, and may use 2 or more types together. Among these, lauric acid amide propyl betaine and coconut oil fatty acid amide propyl betaine are preferable.

As said sulfobetaine type amphoteric surfactant, a hydroxy sulfobetaine type amphoteric surfactant, an amide sulfobetaine type amphoteric surfactant, etc. are mentioned, for example.

Examples of the hydroxysulfobetaine-based amphoteric surfactant include coconut oil fatty acid dimethylaminohydroxysulfobetaine, lauryldimethylaminohydroxysulfobetaine, and laurylhydroxysulfobetaine. These may be used individually by 1 type, and may use 2 or more types together.

As said amidosulfobetaine type amphoteric surfactant, dodecylaminomethyl dimethyl sulfopropyl betaine, octadecylaminomethyl dimethyl sulfopropyl betaine, etc. are mentioned, for example. These may be used individually by 1 type, and may use 2 or more types together.

Examples of the phosphobetaine-based surfactant include alkylhydroxyphosphobetaine. Examples of the alkylhydroxyphosphobetaine include laurylhydroxyphosphobetaine, myristylhydroxyphosphobetaine, and stearylhydroxyphosphobetaine. These may be used individually by 1 type, and may use 2 or more types together.

Examples of the imidazolinium betaine amphoteric surfactant include coconut oil alkyl-N-hydroxyethyl imidazolinium betaine and coconut oil alkyl-N-carboxyethyl-N-hydroxyethyl imidazolinium betaine. , 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, and the like. These may be used individually by 1 type, and may use 2 or more types together. Among these, 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine is preferable.

As said aminopropionic acid type amphoteric surfactant, sodium laurylamino dipropionate, laurylamino dipropionic acid triethanolamine, etc. are mentioned, for example. These may be used individually by 1 type, and may use 2 or more types together.

As said amino acid type amphoteric surfactant, an alkylamino fatty acid or these salts etc. are mentioned, for example. As said alkyl amino fatty acid, lauryl amino fatty acid, stearyl amino fatty acid, myristyl amino fatty acid etc. are mentioned, for example. These may be used individually by 1 type, and may use 2 or more types together.

As a counterion of the said salt, an alkali metal salt, an ammonium salt, an alkanolamine salt etc. are mentioned, for example. Among these, alkali metal salts are preferable, sodium and potassium are more preferable, and sodium is particularly preferable.

As the amphoteric surfactant of the component (B), a commercially available product can be used, and examples of the commercially available product include, for example, brand name: Enajicoll L-30B (lauric acid amide propyl betaine, manufactured by Yipbosha Oil Industry Co., Ltd.), Product name: Anhidol 55AB (coconut oil fatty acid amide propyl betaine solution), Trade name: Anhidol 0Y-B (2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine) (above, manufactured by Gao Co., Ltd.) , Amogen S-H (lauryl dimethylaminoacetic acid betaine, manufactured by Daiichi Kogyo Pharmaceutical Co., Ltd.), and the like. These may be used individually by 1 type, and may use 2 or more types together.

As content of the amphoteric surfactant which is the said (B) component, 1 mass % - 20 mass % is preferable, and 3 mass % - 20 mass % is preferable with respect to the whole amount of hair washing composition from the point of foam, softness of a scalp, and moisture content of a scalp. 10 mass % is more preferable. If the content is less than 1% by mass, the fineness of the foam and the moisture content of the scalp may become insufficient, and if it exceeds 20% by mass, the flexibility of the scalp and the moisture content of the scalp may become insufficient.

<(C) N-acylamino acid ester>

N-acylamino acid ester as the component (C) is contained to improve foaming, fine foaming, hair smoothness during rinsing, scalp flexibility, and scalp moisture.

The N-acylamino acid ester as the component (C) is an ester of an N-acylamino acid and a higher alcohol.

The N-acyl amino acid is not particularly limited as long as it has an acyl group, and can be appropriately selected according to the purpose, and examples thereof include N-acyl amino acids. As said N-acyl acid amino acid, N-acyl aspartic acid, N-acyl glutamic acid, etc. are mentioned, for example. These may be used individually by 1 type, and may use 2 or more types together. Among these, N-acyl glutamic acid is preferable.

As the structure of these amino acids, an optically active form or a racemic form may be used.

As the acyl group, an acyl group derived from a saturated or unsaturated fatty acid having 8 to 22 carbon atoms is preferable. , a naturally occurring mixed fatty acid such as beef tallow fatty acid or hydrogenated beef tallow fatty acid, or an acyl group of synthetically obtained fatty acids (including branched fatty acids) may be used.

The higher alcohols are not particularly limited, and examples thereof include sterols, alkyl alcohols having 8 to 38 carbon atoms, and alkenyl alcohols having 8 to 38 carbon atoms. Among these, sterols, C8-C30 liquid higher alkyl alcohols, C8-C30 liquid higher alkenyl alcohols, and C12-C38 solid higher alkyl alcohols are preferable.

The N-acyl acid amino acid ester of component (C) may be either a monoester or a diester, and a diester in which at least one of the two ester-forming residues is a sterol residue is preferable.

The sterols may be of animal origin or plant origin, and examples thereof include cholesterol, phytosterols, and hydrogenated products thereof.

The liquid higher alkyl alcohol having 8 to 30 carbon atoms and the liquid higher alkenyl alcohol having 8 to 38 carbon atoms are natural or synthetic aliphatic alcohols having 8 to 30 carbon atoms and are liquid at room temperature. For example, and branched alcohols such as 2-octyldodecyl alcohol and unsaturated alcohols such as oleyl alcohol.

The solid higher alkyl alcohol having 12 to 38 carbon atoms is a saturated monohydric alcohol having 12 to 38 carbon atoms and is in a solid state at room temperature, and examples thereof include cetyl alcohol and behenyl alcohol. .

N-acylamino acid esters as the component (C) can be used singly or in combination of two or more, and preferably include those having a sterol residue as at least one ester residue.

Examples of N-acylamino acid esters of the component (C) include N-lauroyl-L-glutamic acid di(phytosteryl/2-octyldodecyl), N-lauroyl-L-glutamic acid di( cholesteryl/behenyl/octyldodecyl), N-lauroyl-L-glutamic acid di(cholesteryl/octyldodecyl), N-lauroyl-L-glutamic acid di(phytosteryl/behenyl/ 2-octyldodecyl) and the like. These may be used individually by 1 type, and may use 2 or more types together. Among these, N-lauroyl-L-glutamic acid di(cholesteryl/octyldodecyl), N-lauroyl-L-glutamic acid di(phytosteryl/2-octyldodecyl) from the point of flexibility of the scalp ) is preferred, and N-lauroyl-L-glutamic acid di(phytosteryl/2-octyldodecyl) is more preferred.

As the N-acylamino acid ester of the component (C), a commercially available product can be used. As the commercially available product, for example, trade name: Erdu PS-203 (N-lauroyl-L-glutamic acid di(phytosteryl/ 2-octyldecyl)), product name: Erudu CL-301 (N-lauroyl-L-glutamic acid di(cholesteryl/behenyl/octyldodecyl)), product name: Erdue CL-202 (N-Lau Royl-L-glutamic acid di(cholesteryl/octyldodecyl)), trade name: Erudu PS-304 (N-lauroyl-L-glutamic acid di(phytosteryl/behenyl/octyldodecyl)), Trade name: Erudu PS-306 (N-lauroyl-L-glutamic acid di(octyldodecyl/phytosteryl/behenyl)) (above, manufactured by Ajinomoto Co., Ltd.); and the like. These may be used individually by 1 type, and may use 2 or more types together.

As the content of the N-acylamino acid ester, which is the component (C), from the viewpoints of good lathering, fine foaming, flexibility of the scalp, and moisture content of the scalp, 0.05% by mass to 3% by mass relative to the total amount of the hair washing composition. It is preferable, and 0.08 mass % - 1 mass % are more preferable. If the content is less than 0.05% by mass, the flexibility of the scalp and the moisture content of the scalp may become insufficient, and if it exceeds 3% by mass, foaming and fineness of the foam may become insufficient.

<(D) Polyoxyethylene Hydrogenated Castor Oil>

Polyoxyethylene hydrogenated castor oil, which is the component (D), is contained to improve foaming, fine foaming, flexibility of the scalp, and moisture content of the scalp.

Polyoxyethylene hydrogenated castor oil as the component (D) is an ester product obtained by addition polymerization of ethylene oxide to hydrogenated castor oil.

The average added mole number of ethylene oxide in the polyoxyethylene hydrogenated castor oil is 5 to 30, preferably 7 to 20. Polyoxyethylene hydrogenated castor oil having an average added mole number of ethylene oxide of less than 5 is not generally commercially available. In addition, if it exceeds 30, foaming, fine foaming, flexibility of the scalp and moisture content of the scalp become insufficient.

As an HLB value of the said polyoxyethylene hydrogenated castor oil, 5-11 are preferable and 6-9 are more preferable.

As the polyoxyethylene hydrogenated castor oil as the component (D), a commercially available product can be used. Examples of the commercially available product include: EMALEX HC-5 (EO: 5, HLB value: 5), trade name: EMALEX HC-5 7(EO: 7, HLB value: 6), product name: EMALEX HC-10 (EO: 10, HLB value: 7), product name: EMALEX HC-20 (EO: 20, HLB value: 9), product name: EMALEX HC -30 (EO: 30, HLB: 11) (above, manufactured by Nippon Emulsion Co., Ltd.), trade name: Buraunon CW-20-90 (EO: 20, manufactured by Aoki Oil Industry Co., Ltd.), and the like. These may be used individually by 1 type, and may use 2 or more types together. Among these, brand name: EMALEX HC-20 (EO: 20, HLB value: 9) is preferable.

In addition, the said HLB value is represented by IOB value x 10 in an organic conceptual diagram. IOB in the organic concept map refers to the ratio of inorganic value (IV) to organic value (OV) in the organic concept map, that is, "inorganic value (IV)/organic value (OV)". The organic conceptual diagram is proposed by Atsushi Fujita, and details thereof are in "Pharmaceutical Bulletin", 1954, vol. 2, 2, p. 163-173, 「The Realm of Chemistry」, 1957, vol. 11, 10, pp. 719-725, 「Fragrance Journal」, 1981, vol. 50, pp. 50; 79-82, 「Organic Conceptual Map-Basic and Application-」(Written by Yoshio Kodaiwa, Sankyo Publishing, 1984).

The content of polyoxyethylene hydrogenated castor oil as the component (D) is 0.05% by mass to 3% by mass with respect to the total amount of the hair washing composition in terms of good foaming, fine foaming, flexibility of the scalp, and moisture content of the scalp. It is preferable, and 0.1 mass % - 1 mass % are more preferable. When the content is less than 0.05% by mass, foaming, fine foaming, scalp flexibility and moisture content of the scalp may become insufficient, and when the content exceeds 3% by mass, foaming and fine foaming may occur. There are things that become insufficient.

<Mass Ratio (D/C)>

Mass ratio between the content (mass %) of N-acylamino acid ester as component (C) and the content (mass %) of polyoxyethylene hydrogenated castor oil having an average added mole number of ethylene oxide of 5 to 30 as component (D) (D/C) is from 1 to 12.5, preferably from 3 to 9, in terms of good lathering, fine lathering, smoothness of the hair during rinsing, flexibility of the scalp, and moisture content of the scalp. If the mass ratio (D/C) is less than 1, foaming, scalp flexibility and moisture content of the scalp become insufficient, and if it exceeds 12.5, foaming and hair smoothness during rinsing become insufficient.

<(E) cationic polymer>

The cationic polymer as the component (E) is contained to improve the smoothness of the hair, the flexibility of the scalp, and the moisture content of the scalp at the time of rinsing.

As the cationic polymer of the component (E), for example, cationized cellulose (e.g., chloride O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethyl cellulose, trade name: Kachinaru C-100, product name: Kachina C-200, product name: Kachina C-100, product name: Kachina C-200 (Toho Chemical Industry Co., Ltd.), etc.), cationized gua rubber (e.g., chloride O-[2 -Hydroxy-3-(trimethylammonio)propyl] guar gum, trade name: JAGUAR EXCEL, manufactured by Sansho Co., Ltd.), cationized locust bean rubber, cationized tarra rubber, homopolymer of diallyl quaternary ammonium salt, diallyl quaternary Ammonium salt/acrylamide copolymer (e.g., dimethyldiallylammonium chloride/acrylamide copolymer, trade name: Makoto 2200, manufactured by Naruko Co., Ltd., etc.), quaternized polyvinylpyrrolidone derivatives, polyglycol polyamine condensate, vinyl Imidazolinium trichloride/vinylpyrrolidone copolymer, hydroxyethylcellulose/dimethyldiallylammonium chloride copolymer, vinylpyrrolidone/quaternized dimethylaminoethyl methacrylate copolymer, polyvinylpyrrolidone/alkyl Aminoacrylate copolymer, polyvinylpyrrolidone/alkylaminoacrylate/vinylcaprolactam copolymer, vinylpyrrolidone/methacrylamide propyltrimethylammonium chloride copolymer, alkylacrylamide/acrylate/alkylaminoalkylacrylamide • A polyethylene glycol methacrylate copolymer, an adipic acid-dimethylamino hydroxypropyl ethylene triamine copolymer, etc. are mentioned. These may be used individually by 1 type, and may use 2 or more types together. Among these, cationized cellulose (chlorinated O-[2-hydroxy-3- (trimethylammonio) propyl] hydroxyethyl cellulose), cationized guar gum (chlorinated O-[ 2-hydroxy-3-(trimethylammonio)propyl]guar gum) is preferred, and cationized cellulose (chlorinated O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethylcellulose) is more preferred. desirable.

The weight average molecular weight of the cationic polymer as component (E) is not particularly limited and can be appropriately selected according to the purpose, but is preferably 2,000,000 or less, more preferably 100,000 or more and 2,000,000 or less, and particularly preferably 100,000 or more and 1,600,000 or less. do. In addition, the weight average molecular weight is a value measured using GPC-MALLS, and a sample solution diluted with a mobile phase having a pure polymer concentration of about 1,000 ppm was subjected to a TSK-GELα column (manufactured by Tosoh Corporation). Using a 0.5 mol/L sodium perchlorate solution as a mobile phase, a wavelength of about 633 nm can be measured by a multi-angle light scattering detector. As a standard product, polyethylene glycol of known molecular weight can be used.

As content of the cationic polymer which is the said (E) component, 0.05 mass % - 2 mass % is preferable with respect to the whole amount of hair washing composition from the point of the smoothness of hair at the time of rinsing, the softness of a scalp, and the moisture content of a scalp, and it is 0.1 Mass % - 1 mass % are more preferable. If the content is less than 0.05% by mass, hair smoothness, flexibility of the scalp and moisture content of the scalp may become insufficient during rinsing, and if it exceeds 2% by mass, flexibility of the scalp may become insufficient. In addition, there are cases in which unsuitability such as stiffness occurs in the hair.

<Other ingredients>

There is no particular limitation as the other components, and other components can be contained in addition to the components (A) to (E) as long as the effect of the present invention is not impaired.

The other components are not particularly limited and can be appropriately selected according to the purpose, and examples include anionic surfactants other than the component (A), liquid oil components other than the component (C), and solid fats. (固體脂), nonionic surfactants other than the above (D) component, anionic polymers, nonionic polymers, polyols, table salt, inorganic salts such as seaweed, organic salts, polyglyceryl monolaurate, propylene glycol, etc. moisturizers, tonics, solubilizers, antioxidants such as BHT and α-tocopherol, bactericides such as triclosan and trichlorocarban, viscosity modifiers such as fatty acid monoethanolamide and fatty acid diethanolamide, ultraviolet absorbers, protein derivatives, animal and vegetable liquors Extract, anti-dandruff agents such as pyroctoneolamine and zinc pyrithione, anti-inflammatory agents such as dipotassium glycyrrhizinate, benzoic acid or its salts, parabens, preservatives such as catone CG, pH adjusters such as citric acid and triethanolamine, emulsions, hydrotropes, lower alcohols, vitamins, volatile oils, hydrophobic solvents, diluent solvents such as purified water, pigments, fragrances, and the like. These may be used individually by 1 type, and may use 2 or more types together.

-pH-

As pH in 25 degreeC of the said hair wash composition, 3-7 are preferable. If the pH is less than 3, there is a concern about irritation to the skin, and if it exceeds 7, the antiseptic power is lowered and microorganisms may propagate. In addition, as said pH, it can be measured based on the quasi-drug raw material standard general test method pH measurement method.

The pH of the hair washing composition can be adjusted by adding a pH adjuster such as citric acid while checking the pH at the end after mixing all the components. More specifically, purified water is balanced and mixed and stirred so that the total of components other than pH adjusters such as citric acid is about 98% by mass. It may be heated if necessary. During mixing and stirring, an aqueous solution of a pH adjuster such as citric acid is gradually added, and added up to the target pH while measuring the respective pH. When the target pH has been reached, the remaining purified water is finally added, and water is added so as to be 100% by mass as a whole. In addition, as said pH, it can be measured based on the quasi-drug raw material standard general test method pH measurement method.

-viscosity-

The viscosity of the hair washing composition is not particularly limited and can be appropriately selected according to the purpose, but at 25°C, 1 Pa·s to 25 Pa·s are preferable, and 8 Pa·s to 16 Pa·s are more preferable. do. If the viscosity is less than 1 Pa·s, it may flow down from the hand during use, making it difficult to use, and if it exceeds 25 Pa·s, the dischargeability from the container may deteriorate. In addition, the said viscosity can be measured at 25 degreeC in accordance with the quasi-drug raw material standard general test method viscosity measurement method 2nd method.

-Formulation(劑型)-

The properties and formulation of the hair washing composition are not particularly limited and can be appropriately selected according to the purpose. As said property, liquid, cream, foam, gel, wax etc. are mentioned, for example. Examples of the formulation include pump type, spray type, tube type and the like.

-Manufacturing method-

The method for producing the hair washing composition is not particularly limited and can be appropriately selected according to the purpose, and can be prepared by mixing the above-mentioned (A) component to the above-mentioned (E) component and the above-mentioned other components. Specifically, the component (E) and purified water are uniformly mixed at 50° C. to 60° C., swollen, and then heated at 70° C. to 75° C., adding the component (A) and component (B), Mix evenly. Then, it cools to 40 degreeC or less, and the mixture of the said (C)component and the said (D)component is added and mixed uniformly. After cooling to 30°C or lower, the other ingredients are added, and the remaining amount of purified water is blended and mixed uniformly so that the total amount of the hair wash composition is 100% by mass, whereby a hair wash composition can be obtained.

The apparatus for preparing the hair washing composition is not particularly limited, and can be appropriately selected according to the purpose. For example, a plurality of stirring blades (propeller, turbine, disper, etc. ), etc. are mentioned.

-courage-

The container is not particularly limited and can be appropriately selected according to the purpose. For example, a tube container such as an aluminum laminate tube, an EVAL tube, an aluminum tube, a glass-deposited plastic tube, or a mechanical or differential pressure pump. A container, a squeeze container, a laminate film container, a dropper container, a bottle container, etc. are mentioned.

As a material of the said aluminum laminate tube container, a laminate film etc. are mentioned, for example. As the laminate film, from the viewpoint of strength, flexibility, weather resistance, etc., it is preferable to have a multilayer of two or more layers, and two to five layers are more preferable. Examples of the material of the laminate film include polyethylene, polyethylene terephthalate, polyester, biaxially oriented polypropylene, non-stretched polypropylene, polyacrylonitrile, synthetic resins such as ethylene-vinyl acetate copolymer, paper, and aluminum deposition. Plastic etc. are mentioned.

Examples of the material for the bottle container include polyethylene, polypropylene, polyethylene terephthalate, polystyrene, polyvinyl chloride, ethylene-vinyl alcohol resin, acrylonitrile-styrene resin, ABS resin, polyamide, and glass. It is preferable to use a single layer or a combination of two or more layers.

-Usage-

Since the hair washing composition of the present invention is excellent in foaming, fine foaming, and smoothness of the hair when rinsing, can improve the flexibility of the scalp, and can increase the moisture content of the scalp, for example, Suitable for in-bath-hair care products such as shampoo and rinse-in shampoo.

Example

Below, the present invention will be described more specifically based on examples and comparative examples, but the present invention is not limited to the following examples. In addition, the content of each component described in Examples and Comparative Examples is a value obtained by converting all pure components.

(Examples 1 to 34 and Comparative Examples 1 to 15)

The hair washing composition of the composition and content shown in following Table 1 - Table 13 was prepared by the following method. That is, component (E) or component (E') and purified water are uniformly mixed at 50 ° C. to 60 ° C., and after swelling, heated to 70 ° C. to 75 ° C., component (A) or component (A') and ( Component B) or component (B') was added and mixed uniformly. Then, it cooled to 40 degreeC or less, the mixture of (C)component or (C')component, and (D)component or (D')component was added, and it mixed uniformly. After cooling to 30°C or lower, common ingredients (pyroctoneolamine, polyglyceryl monolaurate, propylene glycol, and sodium benzoate) were added, mixed uniformly, and then the pH was adjusted to 5.2 with citric acid. , to obtain a hair wash composition. In addition, the said pH was measured at 25 degreeC using the pH meter (HM-30G, Toadike Co., Ltd. make).

Regarding the hair wash compositions of Examples 1 to 34 and Comparative Examples 1 to 15 obtained, the following conditions were obtained: "Good foaming", "Fine foaming", "Smooth hair during rinsing", "Scalp flexibility" ” and “moisture content of the scalp” were evaluated. The results are shown in Tables 1 to 13 below.

<Good lather, fine lather and smooth hair when rinsing>

10 professional panelists in their 20s to 40s wash their hair with 4 g of each hair washing composition, and obtain a judgment point using the following criterion for "foaming well" and "foaming fineness" at the time of shampooing, , The average value of the above decision points was calculated and evaluated using the following evaluation criteria. After that, the hair was rinsed with hot water, and with respect to "the hair was smooth during rinsing", a decision point was obtained using the following criteria, an average value of the criteria was calculated, and evaluation was performed using the following evaluation criteria. .

- Judgment criteria for good foaming -

5 points: very foamy

4 points: bubbles occur

3 points: slightly foamy

2 points: Almost no bubbles

1 point: no foaming

- Judgment criteria for fineness of foam -

5 points: The grain is very fine

4 points: fine texture

3 points: The grain is slightly fine

2 points: The texture is slightly rough

1 point: rough texture

-Criterion for smoothness of hair at the time of rinsing-

5 points: very smooth

4 points: Slightly smooth

3 points: Can't say either way

2 points: slightly not smooth

1 point: not smooth

-Evaluation criteria for foaming well, fine foaming and hair smoothness upon rinsing-

◎: The average of the judgment points is 4.5 points or more

○: The average value of the judgment points is 3.5 points or more and less than 4.5 points

△: The average value of the judgment points is 2.5 points or more and less than 3.5 points

×: The average value of the judgment points is less than 2.5 points

<Scalp Flexibility>

Four male professional panelists in their 30s to 40s who felt hardening and dryness of the scalp due to aging, washed their hair with 4 g of each hair detergent composition, and measured the hardness of the scalp at the top of the head before and after washing the hair. The hardness of the scalp was measured using a portable wireless viscoelasticity meter (trade name: Vesmeter E-100HS, manufactured by Wave Cyber Co., Ltd.).

Specifically, after acclimatization for 30 minutes in a constant temperature and humidity room adjusted to 25° C. and 40% RH before washing hair, the probe of the portable wireless viscoelasticity meter was pressed to the scalp of the top of the head before washing hair, and the maximum The load was measured. The measurement was performed 10 times, and the average value of the maximum load was taken as the hardness of the scalp before washing (initial value). Next, washing was performed, and after the washing, the average value of the maximum load after washing was determined under the same purification and measurement conditions as before the washing, and the hardness of the scalp after washing was determined. Regarding the four male professional panelists, the hardness of the scalp after washing with respect to the hardness of the scalp before washing (initial value) was determined, respectively, and the average hardening rate of the four professional male panelists was calculated, and the following evaluation was performed. Based on the criteria, "scalp flexibility" was evaluated. In addition, it is known that the above-mentioned average curing rate at the time of washing hair with a commercially available hair washing composition is about 100% or more and 130% or less. In addition, the lower the average curing rate, the softer the scalp than before washing hair. Here, the crown of the head means a place that is the most upward on the head in an anatomical orientation.

-Evaluation Criteria for Scalp Flexibility-

◎: The average curing rate is less than 90% (the scalp becomes looser than before washing hair)

○: average curing rate of 90% or more and less than 100% (scalp becomes slightly looser than before washing hair)

△: Average curing rate of 100% or more and less than 110% (not different from before washing or slightly harder)

×: Average hardening rate of 110% or more (scalp becomes harder than before washing hair)

<Moisture content of the scalp>

Four male professional panelists in their 30s and 40s who felt hardening and dryness of the scalp due to aging, shampooed under the same conditions as the above evaluation of "scalp flexibility", and measured the moisture content of the scalp at the top of the head before and after washing the hair was measured using a highly sensitive corneal layer film thickness moisture meter (trade name: ASA-MX, manufactured by Asahi Biomed Co., Ltd.).

Specifically, in the measurement of the hardness of the scalp before and after washing the hair in the evaluation of the "scalp flexibility", the measurement of the hardness of the scalp before and after washing the hair except that the portable wireless viscoelasticity meter was changed to the high-sensitivity stratum corneum moisture meter. Similarly, the moisture content of the scalp before and after washing was measured, and the respective average values of the moisture amounts before and after washing were used as the moisture content of the scalp before washing (initial value) and the moisture content of the scalp after washing. Regarding the 4 male professional panelists, the rate of increase in the amount of moisture in the scalp after washing the hair relative to the amount of moisture in the scalp before washing (initial value) was calculated, the average increase rate of the 4 male professional panelists was calculated, and based on the following evaluation criteria, " Moisture content of the scalp” was evaluated.

In addition, it is known that the above average increase rate in the case of washing hair with a commercially available hair washing composition is about less than 100%. In addition, the higher the average rate of increase, the higher the moisture content of the scalp than before washing the hair.

-Evaluation criteria of moisture content of the scalp-

◎ : Average increase rate is 110% or more

○: Average increase rate is 100% or more and less than 110%

△: Average increase rate is 90% or more and less than 100%

×: average increase rate is less than 90%

[Table 1]

[Table 2]

[Table 3]

[Table 4]

[Table 5]

[Table 6]

[Table 7]

[Table 8]

[Table 9]

[Table 10]

[Table 11]

[Table 12]

[Table 13]

In addition, details of various components used in the above examples and the above comparative examples are shown in Table 14 below.

[Table 14]

Since the hair washing composition of the present invention is excellent in foaming, fine foaming, and smoothness of the hair when rinsing, can improve the flexibility of the scalp, and can increase the moisture content of the scalp, for example, Suitable for in-bath-hair care such as shampoo and rinse-in shampoo.

Claims (4)

(A) polyoxyethylene alkyl ether sulfate,
(B) an amphoteric surfactant;
(C) N-acylamino acid ester;
(D) Polyoxyethylene hydrogenated castor oil having an average added mole number of ethylene oxide of 5 to 30; and
(E) contains a cationic polymer;
The component (B) is at least one selected from alkyldimethylaminoacetic acid betaine, alkylamidepropylbetaine, and imidazolinium betaine-based amphoteric surfactants;
At least one selected from diesters in which the component (C) is N-acylglutamic acid and at least one of the two ester-forming residues is a sterol residue;
The component (E) is at least one selected from cationized cellulose and cationized guar gum,
Mass ratio (D/C) of the content (mass%) of the N-acylamino acid ester (C) and the content (mass%) of the polyoxyethylene hydrogenated castor oil having an average added mole number of ethylene oxide of 5 to 30 (D) ) is 1 to 12.5, characterized in that the hair wash composition. According to claim 1,
The content of the (C) N-acylamino acid ester is 0.08% by mass to 1% by mass,
A hair wash composition characterized in that the content of (D) polyoxyethylene hydrogenated castor oil having an average added mole number of ethylene oxide of 5 to 30 is 0.1% by mass to 1% by mass. According to claim 1 or 2,
The content of the (A) polyoxyethylene alkyl ether sulfate is 12% by mass to 20% by mass,
The (E) content of the cationic polymer is 0.1% by mass to 1% by mass,
Mass ratio (D/C) of the content (mass%) of the N-acylamino acid ester (C) and the content (mass%) of the polyoxyethylene hydrogenated castor oil having an average added mole number of ethylene oxide of 5 to 30 (D) ) is 3 to 9, characterized in that the hair wash composition. According to claim 1 or 2,
A hair wash composition characterized in that the content of the amphoteric surfactant (B) is 1% by mass to 20% by mass.